1
|
Solomou E, Terentes-Printzios D, Gardikioti V, Katsaounou P, Exarchos D, Economou D, Christopoulou G, Kalkinis AD, Kafouris P, Antonopoulos A, Kotanidou A, Datseris I, Tsioufis K, Anagnostopoulos CD, Vlachopoulos C. Time-related aortic inflammatory response, as assessed with 18F-FDG PET/CT, in patients hospitalized with severely or critical COVID-19. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Aim
Arterial involvement has been implicated in the coronavirus disease of 2019 (COVID-19). Fluorine 18-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) imaging is a valuable tool for the assessment of aortic inflammation and is a predictor of outcome. We sought to prospectively assess the presence of aortic inflammation and its time-dependent trend in patients with COVID-19.
Methods
Between November 2020 and May 2021, in this pilot, case-control study, we recruited 20 patients with severe or critical COVID-19 (mean age of 59±12 years), while 10 age and sex-matched individuals served as the control group. Aortic inflammation was assessed by measuring 18F-FDG uptake in PET/CT performed 20–120 days post-admission. Global aortic target to background ratio (GLA-TBR) was calculated as the sum of TBRs of ascending and descending aorta, aortic arch, and abdominal aorta divided by 4. Index aortic segment TBR (IAS-TBR) was designated as the aortic segment with the highest TBR.
Results
There was no significant difference in aortic 18F-FDG PET/CT uptake between patients and controls (GLA-TBR: 1.46 [1.40–1.57] vs. 1.43 [1.32–1.70], respectively, p=0.422 and IAS-TBR: 1.60 [1.50–1.67] vs. 1.50 [1.42–1.61], respectively, p=0.155). There was a moderate correlation between aortic TBR values (both GLA and IAS) and time distance from admission to 18F-FDG PET-CT scan (Spearman's rho=−0.528, p=0.017 and Spearman's rho=−0.480, p=0.032, respectively), Figure 1. Patients who were scanned less than or equal to 60 days from admission (n=11) had significantly higher GLA-TBR values compared to patients that were examined more than 60 days post-admission (GLA-TBR: 1.53 [1.42–1.60] vs. 1.40 [1.33–1.45], respectively, p=0.016 and IAS-TBR: 1.64 [1.51–1.74] vs. 1.52 [1.46–1.60], respectively, p=0.038). There was a significant difference in IAS-TBR between patients scanned ≤60 days and controls (1.64 [1.51–1.74] vs. 1.50 [1.41–1.61], p=0.036), Figure 2.
Conclusion
This is the first study suggesting that aortic inflammation, as assessed by 18F-FDG PET/CT imaging, is increased in the early post-COVID phase in patients with severe or critical COVID-19 and largely resolves over time. Our findings may have important implications for the understanding of the course of the disease and for improving our preventive and therapeutic strategies.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- E Solomou
- Hippokration General Hospital, National & Kapodistrian University of Athens , Athens , Greece
| | - D Terentes-Printzios
- Hippokration General Hospital, National & Kapodistrian University of Athens , Athens , Greece
| | - V Gardikioti
- Hippokration General Hospital, National & Kapodistrian University of Athens , Athens , Greece
| | | | | | | | - G Christopoulou
- Hippokration General Hospital, National & Kapodistrian University of Athens , Athens , Greece
| | | | - P Kafouris
- National & Kapodistrian University of Athens , Athens , Greece
| | - A Antonopoulos
- Hippokration General Hospital, National & Kapodistrian University of Athens , Athens , Greece
| | | | | | - K Tsioufis
- Hippokration General Hospital, National & Kapodistrian University of Athens , Athens , Greece
| | | | - C Vlachopoulos
- National & Kapodistrian University of Athens , Athens , Greece
| |
Collapse
|
2
|
Solomou E, Terentes-Printzios D, Kafouris P, Pouli A, Sioni A, Giannouli S, Metaxas M, Angelopoulou M, Ioakimidis N, Aggeli C, Voulgarelis M, Tousoulis D, Tsioufis C, Anagnostopoulos CD, Vlachopoulos C. Effect of 1st line treatment on aortic inflammation as assessed by 18 FDG PET/CT in patients with Hodgkin and non-Hodgkin lymphoma. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Despite advances in the treatment of oncology patients, therapy-related side effects may lead to premature morbidity among cancer survivors. Inflammatory activation that has been linked to cardiovascular disease is particularly crucial for the pathogenesis of both Hodgkin (HL) and non-Hodgkin lymphoma (NHL).
Objectives
To assess the vascular effects of chemotherapy in patients with HL and NHL by 18-Fluorodeoxyglucose (FDG PET/CT) and to investigate possible interactions with systemic inflammation as assessed by circulating inflammatory markers.
Methods
Between July 2015 and July 2019, sixty-five consecutive patients (37 males, mean age 56±17.8 years) with histologically confirmed new diagnosis of either HL (n=33) or NHL (n=32), were prospectively studied. PET/CT imaging was performed at baseline, at an interim phase and after 1st line treatment. Aortic FDG uptake was assessed by measuring global aortic TBR. Serum interleukin-6 (IL6) and interleukin-1b (IL1b) were measured at each phase for all patients and served as circulating inflammatory markers.
Results
Patients with HL demonstrated significant reduction in aortic TBR after 1st line treatment (aortic TBRbaseline=1.98, aorticTBR3rdscan=1.75, p=0.001, F=8.335), which remained significant after adjustment for 10-year cardiovascular risk (Framingham risk score), dyslipidemia, hypertension and diabetes (p=0.002, F=7.664). In contrast, patients with NHL did not demonstrate a significant aortic inflammation response (aortic TBRbaseline = 2.13, aorticTBR3rd scan=2.015, p=0.596, F=0.527), Figure 1. Regarding inflammatory markers, after 1st line treatment IL6 levels were reduced significantly in both HL and NHL groups (IL6baseline HL=3.25, IL6 post 1st line treatment HL=0.448, p=0.00; IL6baseline NHL=0.475, IL6 post 1st line treatment NHL=0.144, p=0.001); IL1b levels did not change significantly in either group, Table 1.
Conclusions
We demonstrate for the first time that aortic inflammation as assessed by 18-FDG PET-CT is reduced in HL patients after 1st line treatment but not in NHL patients. These findings imply that different pathophysiological pathways and different therapies might affect the arterial bed in different ways in lymphoma patients. Further, a strong potential role of molecular imaging in cardio-oncology emerges, offering valuable information on disease prognosis and progression with a single examination.
Funding Acknowledgement
Type of funding sources: Foundation. Main funding source(s): Hellenic Society of Hypertension
Collapse
Affiliation(s)
- E Solomou
- Hippokration General Hospital, National & Kapodistrian University of Athens , Athens , Greece
| | - D Terentes-Printzios
- Hippokration General Hospital, National & Kapodistrian University of Athens , Athens , Greece
| | - P Kafouris
- National & Kapodistrian University of Athens, Department of Informatics and Telecommunications , Athens , Greece
| | - A Pouli
- Agios Savvas General Oncology Hospital , Athens , Greece
| | - A Sioni
- Agios Savvas General Oncology Hospital , Athens , Greece
| | - S Giannouli
- Hippokration General Hospital, National & Kapodistrian University of Athens , Athens , Greece
| | - M Metaxas
- Academy of Athens Biomedical Research Foundation , Athens , Greece
| | | | - N Ioakimidis
- Hippokration General Hospital, National & Kapodistrian University of Athens , Athens , Greece
| | - C Aggeli
- Hippokration General Hospital, National & Kapodistrian University of Athens , Athens , Greece
| | | | - D Tousoulis
- Hippokration General Hospital, National & Kapodistrian University of Athens , Athens , Greece
| | - C Tsioufis
- Hippokration General Hospital, National & Kapodistrian University of Athens , Athens , Greece
| | | | - C Vlachopoulos
- National & Kapodistrian University of Athens , Athens , Greece
| |
Collapse
|
3
|
Toutouzas K, Antonopoulos AS, Koutagiar I, Skoumas I, Benetos G, Kafouris P, Miliou A, Petrocheilou A, Georgakopoulos A, Oikonomou G, Drakopoulou M, Siores I, Pitsavos C, Antoniades C, Anagnostopoulos CD, Tousoulis D. Visceral adipose tissue phenotype and hypoadiponectinemia are associated with aortic Fluorine-18 fluorodeoxyglucose uptake in patients with familial dyslipidemias. J Nucl Cardiol 2022; 29:1405-1414. [PMID: 33501546 DOI: 10.1007/s12350-020-02472-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 11/12/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND The role of adipose tissue (AT) in arterial inflammation in familial dyslipidaemias is poorly studied. We investigated the relationship between AT and arterial inflammation in patients with heterozygous familial hypercholesterolemia (heFH) and familial combined hyperlipidemia (FCH). METHODS AND RESULTS A total of 40 patients (20 heFH/20 FCH) and a subgroup of 20 of non-heFH/FCH patients were enrolled. Participants underwent blood sampling for serum adipokine measurements and Fluorine-18 fluorodeoxyglucose (18F-FDG) PET/CT imaging. Abdominal visceral (VAT) and subcutaneous (SAT) AT volumes and AT and abdominal aorta 18F-FDG uptake were quantified. FCH patients had increased VAT (pANOVA = 0.004) and SAT volumes (pANOVA = 0.003), lower VAT metabolic activity (pANOVA = 0.0047), and lower adiponectin levels (pANOVA = 0.007) compared to heFH or the control group. Log(Serum adiponectin) levels were correlated with aortic TBR (b = - 0.118, P = 0.038). In mediation analysis, VAT volume was the major determinant of circulating adiponectin, an effect partly mediated via VAT TBR. Clustering of the population of heFH/FCH by VAT volume/TBR and serum adiponectin identified two distinct patient clusters with significant differences in aortic TBR levels (2.11 ± 0.06 vs 1.89 ± 0.05, P= 0.012). CONCLUSIONS VAT phenotype (increased VAT volume and/or high VAT TBR) and hypoadiponectinemia may account for the observed differences in arterial inflammation levels between heFH and FCH patients.
Collapse
Affiliation(s)
- Konstantinos Toutouzas
- First Department of Cardiology, Hippokration Hospital, Vasilissis Sofias 114, PO 11528, Athens, Greece
| | - Alexios S Antonopoulos
- First Department of Cardiology, Hippokration Hospital, Vasilissis Sofias 114, PO 11528, Athens, Greece.
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK.
| | - Iosif Koutagiar
- First Department of Cardiology, Hippokration Hospital, Vasilissis Sofias 114, PO 11528, Athens, Greece
- Fifth Department of Cardiology, Hygheia Hospital, Athens, Greece
| | - Ioannis Skoumas
- First Department of Cardiology, Hippokration Hospital, Vasilissis Sofias 114, PO 11528, Athens, Greece
| | - Georgios Benetos
- First Department of Cardiology, Hippokration Hospital, Vasilissis Sofias 114, PO 11528, Athens, Greece
| | - Pavlos Kafouris
- Center for Experimental Surgery, Clinical and Translational Research, Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St., 11527, Athens, Greece
- Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece
| | - Antigoni Miliou
- First Department of Cardiology, Hippokration Hospital, Vasilissis Sofias 114, PO 11528, Athens, Greece
| | - Aikaterini Petrocheilou
- First Department of Cardiology, Hippokration Hospital, Vasilissis Sofias 114, PO 11528, Athens, Greece
| | - Alexandros Georgakopoulos
- Center for Experimental Surgery, Clinical and Translational Research, Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St., 11527, Athens, Greece
| | - Georgios Oikonomou
- First Department of Cardiology, Hippokration Hospital, Vasilissis Sofias 114, PO 11528, Athens, Greece
| | - Maria Drakopoulou
- First Department of Cardiology, Hippokration Hospital, Vasilissis Sofias 114, PO 11528, Athens, Greece
| | - Ilias Siores
- First Department of Cardiology, Hippokration Hospital, Vasilissis Sofias 114, PO 11528, Athens, Greece
| | - Christos Pitsavos
- First Department of Cardiology, Hippokration Hospital, Vasilissis Sofias 114, PO 11528, Athens, Greece
| | - Charalambos Antoniades
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Constantinos D Anagnostopoulos
- Center for Experimental Surgery, Clinical and Translational Research, Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St., 11527, Athens, Greece.
| | - Dimitris Tousoulis
- First Department of Cardiology, Hippokration Hospital, Vasilissis Sofias 114, PO 11528, Athens, Greece
| |
Collapse
|
4
|
Vrachliotis A, Kastis GA, Protonotarios NE, Fokas AS, Nekolla SG, Anagnostopoulos CD, Costaridou L, Gaitanis A. Evaluation of the spline reconstruction technique for preclinical PET imaging. Comput Methods Programs Biomed 2022; 217:106668. [PMID: 35176596 DOI: 10.1016/j.cmpb.2022.106668] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 12/27/2021] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND AND OBJECTIVE The Spline Reconstruction Technique (SRT) is a fast algorithm based on a novel numerical implementation of an analytic representation of the inverse Radon transform. The purpose of this study is to provide a comparison between SRT, Filtered Back-Projection (FBP), Ordered Subset Expectation Maximization 2D (2D-OSEM), and the Tera-Tomo 3D algorithm, using phantom data at various acquisition durations as well as small-animal data obtained from the Mediso nanoScan® PET/CT scanner. METHODS For this purpose, the "NEMA NU 4-2008 standards" protocol was employed at five different realizations and acquisition durations. In addition to the image quality metrics described by the NEMA protocol, Cold Region Contrast was also considered as a figure-of-merit. Furthermore, Cold Region Contrast was measured in the myocardial infarction region of six male Wistar rats. The volumetric defect quantification was assessed with dedicated computer software. Lastly, plots of Recovery Coefficient and Spill-Over Ratio as a function of the Percentage Standard Deviation were generated, after smoothing the phantom reconstructions with four different Gaussian filters. Statistical significance was determined by employing the Kruskal-Wallis test or One-way Analysis of Variance depending on the normality of the variable's distribution. RESULTS The present study revealed that, at the expense of slightly increased noise in the reconstructed images, SRT resulted in higher Recovery Coefficient values for small hot regions of interest, when compared with FBP and 2D-OSEM at all acquisition durations. Furthermore, SRT reconstructed images exhibit higher Recovery Coefficient values, for all hot regions of interest, when compared to the other 2D algorithms at short acquisition durations. In both phantom and animal studies, SRT achieved a significant improvement over 2D-OSEM for the Spill-Over Ratio and the Cold Region Contrast. These advantages were maintained even after comparing the algorithms at equal noise levels. The Tera-Tomo 3D algorithm (4 subsets, iterations≥ 13) performed significantly better compared to the other algorithms for all figures-of-merit. No statistically significant differences regarding the myocardial defect size were observed between the algorithms investigated. CONCLUSIONS Overall, SRT appears that could be useful for the quantification of small hot regions of interest, cold regions of interest, as well as in low-count imaging applications.
Collapse
Affiliation(s)
- Alexandros Vrachliotis
- Department of Medical Physics, School of Medicine, University of Patras, Patras 26504, Greece; Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation, Academy of Athens (BRFAA), Athens 11527, Greece
| | - George A Kastis
- Mathematics Research Center, Academy of Athens, Athens 11527, Greece; Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research "Demokritos", 15341 Athens, Greece
| | - Nicholas E Protonotarios
- Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge CB30WA, United Kingdom
| | - Athanasios S Fokas
- Mathematics Research Center, Academy of Athens, Athens 11527, Greece; Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge CB30WA, United Kingdom
| | - Stephan G Nekolla
- Klinikum rechts der Isar, Department of Nuclear Medicine and DZHK (German Centre for Cardiovascular Research), Technical University Munich, Partner Site Munich Heart Alliance, Munich 80336, Germany
| | - Constantinos D Anagnostopoulos
- Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation, Academy of Athens (BRFAA), Athens 11527, Greece
| | - Lena Costaridou
- Department of Medical Physics, School of Medicine, University of Patras, Patras 26504, Greece
| | - Anastasios Gaitanis
- Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation, Academy of Athens (BRFAA), Athens 11527, Greece.
| |
Collapse
|
5
|
Solomou E, Ioakimidis N, Terentes-Printzios D, Koutagiar I, Pouli A, Sioni A, Giannouli S, Kafouris P, Metaxas M, Kalikakis G, Aggeli K, Tousoulis D, Tsioufis K, Anagnostopoulos CD, Vlachopoulos C. Arterial stiffness improves with effective chemotherapy in patients with lymphoma. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Arterial stiffness independently predicts cardiovascular risk and has been associated with the presence of inflammation. Chemotherapy-induced cardiac dysfunction is a major contributor to adverse morbidity and mortality rates in cancer patients. There is extensive literature describing the cardiotoxic effects of anti-cancer treatment on left ventricular systolic function, that may be the result of direct effects of the cancer treatment on heart function, or due to an indirect acceleration of atherosclerosis. However there is only little evidence regarding chemotherapy effects on arterial elastic properties. The gold standard for measuring arterial stiffness is carotid femoral pulse wave velocity (cfPWV) and it is calculated as a function of transit time and distance of the pulse wave derived from the carotid and femoral arteries.
Purpose
Our aim was to investigate the effect of chemotherapy in aortic stiffness in patients with lymphoma, a malignancy with known high metabolic burden.
Methods
Sixty-six patients (22 male, mean age 56 years) with Hodgkin (n=34) or non-Hodgkin lymphoma (n=32) were enrolled in the study. Patients with Hodgkin Lymphoma underwent therapy with Doxorubicin, bleomycin, vinblastine and dacarbazine (ABVD). The interim of their treatment was set at 1 to 3 days prior to initiating the 3rd chemotherapy cycle. Patients with non Hodgkin Lymphoma underwent therapy with cyclophosphamide, doxorubicin, vincristine, and prednisone+rituximab (R-CHOP). Blood pressure (BP) and carotid-femoral pulse wave velocity (c-f PWV) were measured at baseline, interim and after completion of chemotherapy.
Results
Changes in systolic and diastolic BP from baseline, to interim phase and 6 weeks post therapy were insignificant (decrease by 3.87±1.37 mmHg p-0.277 and 3.05±0.92 mmHg p-0.422 respectively). Figure illustrates c-f PWV changes from baseline to interim and 6 weeks after completion of chemotherapy. As figure shows, c-f PWV progressively decreased at the interim phase and at 6–8 weeks after chemotherapy completion (by 0.37±0.14 m/s), (overall P-0.010, by ANOVA) The progressive decrease in c-f PWV remained statistically significant after adjustment for age, systolic BP and diabetes (F=5.173, P-0.009). Patients' baseline characteristics are demonstrated in table 1.
Conclusion
Carotid-Femoral PWV decreased at 6–8 weeks post chemotherapy in patients with lymphoma, suggesting that aortic elastic properties improve with chemotherapy in these patients. Considering that aortic stiffness increases due to systemic inflammation and that lymphomas are increased metabolic burden tumors, the significant improvement in arterial stiffness implies that the presence of inflammation caused by the malignancy may play a significant role in the arterial stiffness progression.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- E Solomou
- Hippokration General Hospital, 1st Cardiology Department, Athens Medical School, Athens, Greece
| | - N Ioakimidis
- Hippokration General Hospital, 1st Cardiology Department, Athens Medical School, Athens, Greece
| | - D Terentes-Printzios
- Hippokration General Hospital, 1st Cardiology Department, Athens Medical School, Athens, Greece
| | - I Koutagiar
- Hippokration General Hospital, National & Kapodistrian University of Athens, Athens, Greece
| | - A Pouli
- Agios Savvas General Oncology Hospital, Athens, Greece
| | - A Sioni
- Agios Savvas General Oncology Hospital, Athens, Greece
| | - S Giannouli
- Hippokration General Hospital, National & Kapodistrian University of Athens, Athens, Greece
| | - P Kafouris
- Academy of Athens Biomedical Research Foundation, Center for Experimental Surgery, Clinical and Translational Research, Biomedical Research Foundatio, Athens, Greece
| | - M Metaxas
- Academy of Athens Biomedical Research Foundation, Center for Experimental Surgery, Clinical and Translational Research, Biomedical Research Foundatio, Athens, Greece
| | - G Kalikakis
- Academy of Athens Biomedical Research Foundation, Center for Experimental Surgery, Clinical and Translational Research, Biomedical Research Foundatio, Athens, Greece
| | - K Aggeli
- Hippokration General Hospital, 1st Cardiology Department, Athens Medical School, Athens, Greece
| | - D Tousoulis
- Hippokration General Hospital, 1st Cardiology Department, Athens Medical School, Athens, Greece
| | - K Tsioufis
- Hippokration General Hospital, 1st Cardiology Department, Athens Medical School, Athens, Greece
| | - C D Anagnostopoulos
- Academy of Athens Biomedical Research Foundation, Center for Experimental Surgery, Clinical and Translational Research, Biomedical Research Foundatio, Athens, Greece
| | - C Vlachopoulos
- National & Kapodistrian University of Athens, Athens, Greece
| | | |
Collapse
|
6
|
Kafouris PP, Koutagiar IP, Georgakopoulos AT, Spyrou GM, Visvikis D, Anagnostopoulos CD. Fluorine-18 fluorodeoxyglucose positron emission tomography-based textural features for prediction of event prone carotid atherosclerotic plaques. J Nucl Cardiol 2021; 28:1861-1871. [PMID: 31823329 DOI: 10.1007/s12350-019-01943-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 10/13/2019] [Indexed: 12/23/2022]
Abstract
BACKGROUND Texture analysis has been increasingly used in the field of positron emission tomography (PET)/computed tomography (CT) imaging with Fluorine-18 fluorodeoxyglucose (18F-FDG), aiming at assessing tumor heterogeneity. The purpose of the present study is to examine the feasibility of performing texture analysis in carotid arteries, investigate the value of textural features as predictors of potential plaque vulnerability using as reference standards histological and immunohistochemical data and compare their performance with conventional uptake measurements. METHODS 67 different 18F-FDG PET-based textural features were extracted from carotid images of 21 patients with high-grade carotid stenosis undergoing endarterectomy. To identify the more reliable predictors, univariate logistic regression analysis was performed. The accuracy was satisfactory in case of an Area Under the Receiver Operating Characteristic (ROC) curve (AUC) ≥ 0.80. RESULTS First measure of information correlation (AUC = 0.87, P < 0.001), large zone low gray level emphasis (AUC = 0.87, P < 0.001), and normalized run length non-uniformity (AUC = 0.84, P < 0.001) were the most optimal textural features for identifying characteristics of plaque vulnerability based on histological analysis. Addition of textural features to target-to-background ratio (TBR) (AUC = 0.74, P = 0.031) resulted in an AUC = 0.92 (P < 0.001), however, this did not reach statistical significance (Pdiff = 0.09). Intensity histogram standard deviation (AUC = 0.87, P < 0.001) and joint variance (AUC = 0.81, P = 0.001) were the most efficient features for signal differential in relation to immunohistochemical findings and provided incremental value compared to TBR (Pdiff = 0.02). CONCLUSION Texture analysis can be applied in 18F-FDG PET carotid imaging providing valuable information for plaque characterization.
Collapse
Affiliation(s)
- Pavlos P Kafouris
- Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece
- Experimental Surgery, Clinical and Translational Research Centre, Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St., 11527, Athens, Greece
| | - Iosif P Koutagiar
- First Department of Cardiology, Hippokration Hospital, Athens, Greece
| | - Alexandros T Georgakopoulos
- Experimental Surgery, Clinical and Translational Research Centre, Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St., 11527, Athens, Greece
| | - George M Spyrou
- The Cyprus Institute of Neurology and Genetics, Nicosia, Cyprus
- Cyprus School of Molecular Medicine, Nicosia, Cyprus
| | | | - Constantinos D Anagnostopoulos
- Experimental Surgery, Clinical and Translational Research Centre, Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St., 11527, Athens, Greece.
| |
Collapse
|
7
|
Siogkas PK, Lakkas L, Sakellarios AI, Rigas G, Kyriakidis S, Stefanou KA, Anagnostopoulos CD, Clemente A, Rocchiccioli S, Pelosi G, Parodi O, Papafaklis MI, Naka KK, Michalis LK, Neglia D, Fotiadis DI. SmartFFR, a New Functional Index of Coronary Stenosis: Comparison With Invasive FFR Data. Front Cardiovasc Med 2021; 8:714471. [PMID: 34490377 PMCID: PMC8418116 DOI: 10.3389/fcvm.2021.714471] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 07/27/2021] [Indexed: 12/22/2022] Open
Abstract
Aims: In this study, we evaluate the efficacy of SmartFFR, a new functional index of coronary stenosis severity compared with gold standard invasive measurement of fractional flow reserve (FFR). We also assess the influence of the type of simulation employed on smartFFR (i.e. Fluid Structure Interaction vs. rigid wall assumption). Methods and Results: In a dataset of 167 patients undergoing either computed tomography coronary angiography (CTCA) and invasive coronary angiography or only invasive coronary angiography (ICA), as well as invasive FFR measurement, SmartFFR was computed after the 3D reconstruction of the vessels of interest and the subsequent blood flow simulations. 202 vessels were analyzed with a mean total computational time of seven minutes. SmartFFR was used to process all models reconstructed by either method. The mean FFR value of the examined dataset was 0.846 ± 0.089 with 95% CI for the mean of 0.833-0.858, whereas the mean SmartFFR value was 0.853 ± 0.095 with 95% CI for the mean of 0.84-0.866. SmartFFR was significantly correlated with invasive FFR values (RCCTA = 0.86, p CCTA < 0.0001, RICA = 0.84, p ICA < 0.0001, R overall = 0.833, p overall < 0.0001), showing good agreement as depicted by the Bland-Altman method of analysis. The optimal SmartFFR threshold to diagnose ischemia was ≤0.83 for the overall dataset, ≤0.83 for the CTCA-derived dataset and ≤0.81 for the ICA-derived dataset, as defined by a ROC analysis (AUCoverall = 0.956, p < 0.001, AUCICA = 0.975, p < 0.001, AUCCCTA = 0.952, p < 0.001). Conclusion: SmartFFR is a fast and accurate on-site index of hemodynamic significance of coronary stenosis both at single coronary segment and at two or more branches level simultaneously, which can be applied to all CTCA or ICA sequences of acceptable quality.
Collapse
Affiliation(s)
- Panagiotis K Siogkas
- Biomedical Research Institute, Foundation for Research and Technology Hellas, Ioannina, Greece.,Materials Science and Engineering, University of Ioannina, Ioannina, Greece
| | - Lampros Lakkas
- Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece
| | - Antonis I Sakellarios
- Biomedical Research Institute, Foundation for Research and Technology Hellas, Ioannina, Greece
| | - George Rigas
- Biomedical Research Institute, Foundation for Research and Technology Hellas, Ioannina, Greece
| | - Savvas Kyriakidis
- Biomedical Research Institute, Foundation for Research and Technology Hellas, Ioannina, Greece
| | - Kostas A Stefanou
- Biomedical Research Institute, Foundation for Research and Technology Hellas, Ioannina, Greece
| | - Constantinos D Anagnostopoulos
- PET-CT Department & Preclinical Imaging Unit, Center for Experimental Surgery, Clinical & Translational Research, Biomedical Research Foundation Academy of Athens, Athens, Greece
| | - Alberto Clemente
- Fondazione Toscana G. Monasterio and Institute of Clinical Physiology, Consiglio Nazionale delle Ricerche, Pisa, Italy
| | - Silvia Rocchiccioli
- Fondazione Toscana G. Monasterio and Institute of Clinical Physiology, Consiglio Nazionale delle Ricerche, Pisa, Italy
| | - Gualtiero Pelosi
- Fondazione Toscana G. Monasterio and Institute of Clinical Physiology, Consiglio Nazionale delle Ricerche, Pisa, Italy
| | - Oberdan Parodi
- Fondazione Toscana G. Monasterio and Institute of Clinical Physiology, Consiglio Nazionale delle Ricerche, Pisa, Italy.,Institute of Clinical Physiology, CNR, Pisa, Italy
| | - Michail I Papafaklis
- Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece
| | - Katerina K Naka
- Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece
| | - Lampros K Michalis
- Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece
| | - Danilo Neglia
- Fondazione Toscana G. Monasterio and Institute of Clinical Physiology, Consiglio Nazionale delle Ricerche, Pisa, Italy
| | - Dimitrios I Fotiadis
- Biomedical Research Institute, Foundation for Research and Technology Hellas, Ioannina, Greece.,Materials Science and Engineering, University of Ioannina, Ioannina, Greece
| |
Collapse
|
8
|
Palamidas DA, Argyropoulou OD, Georgantzoglou N, Karatza E, Xingi E, Kapsogeorgou EK, Anagnostopoulos CD, Lazaris AC, Ritis K, Goules AV, Kambas K, Tzioufas AG. Neutrophil extracellular traps in giant cell arteritis biopsies: presentation, localization and co-expression with inflammatory cytokines. Rheumatology (Oxford) 2021; 61:1639-1644. [PMID: 34260696 DOI: 10.1093/rheumatology/keab505] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 06/11/2021] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES To explore the presence of neutrophil extracellular traps (NETs) in inflamed temporal artery biopsies (TABs) of patients with giant cell arteritis (GCA). METHODS Ten patients with GCA [5 with limited and 5 with associated generalized vascular involvement, as defined by 18F-fluorodeoxyglucose (FDG) positron-emission tomography with computed tomography (PET/CT)] and 8 with polymyalgia rheumatica (PMR) were studied. The presence, location, quantitation, and decoration of NETs with IL-6, IL-1β, and IL-17A were assessed in TABs at the time of disease diagnosis by tissue immunofluorescence and confocal microscopy. Paired serum levels of IL-6 and IL-17A were also evaluated in all patients. RESULTS All temporal artery biopsies from GCA, but not PMR patients, had NETs located mainly in the adventitia, adjacent to the vasa vasorum. NETs decorated with IL-6 were present in 8/10 TABs of GCA patients, of whom 5 were -PET/CT(+) and 3 PET/CT(-) patients. IL-17A(+) NETs were observed in all GCA patients. IL-1β(+)NETs were not detected in any GCA patient. No relation was found between serum IL-6 and IL-17A levels and NETs containing IL-6 and/or IL-17A. CONCLUSIONS NETs bearing pro-inflammatory cytokines are present in inflamed GCA-TABs. Future studies with a larger number of patients from different centers will show whether the findings regarding neutrophils/NETs in the TAB are consistent and disclose their clinical impact.
Collapse
Affiliation(s)
- Dimitris Anastasios Palamidas
- Department of Pathophysiology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.,Joint Rheumatology Academic program, University of Athens, Athens, Greece
| | - Ourania D Argyropoulou
- Department of Pathophysiology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.,Joint Rheumatology Academic program, University of Athens, Athens, Greece
| | - Natalia Georgantzoglou
- 1st Department of Pathology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Elli Karatza
- Second Propaedeutic Department of Surgery, National and Kapodistrian University of Athens, Laikon General Hospital, Athens, Greece
| | - Evangelia Xingi
- Light Microscopy Unit, Hellenic Pasteur Institute, Athens, Greece
| | - Efstathia K Kapsogeorgou
- Department of Pathophysiology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.,Joint Rheumatology Academic program, University of Athens, Athens, Greece
| | | | - Andreas C Lazaris
- 1st Department of Pathology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Konstantinos Ritis
- First Department of Internal Medicine, University Hospital of Alexandroupolis, Alexandroupolis, Greece.,Laboratory of Molecular Hematology, Department of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Andreas V Goules
- Department of Pathophysiology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.,Joint Rheumatology Academic program, University of Athens, Athens, Greece
| | - Konstantinos Kambas
- Laboratory of Molecular Genetics, Department of Immunology, Hellenic Pasteur Institute, Athens, Greece
| | - Athanasios G Tzioufas
- Department of Pathophysiology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.,Joint Rheumatology Academic program, University of Athens, Athens, Greece
| |
Collapse
|
9
|
Kalykakis GE, Antonopoulos AS, Pitsargiotis T, Siogkas P, Exarchos T, Kafouris P, Sakelarios A, Liga R, Tzifa A, Giannopoulos A, Scholte AJHA, Kaufmann PA, Parodi O, Knuuti J, Fotiadis DI, Neglia D, Anagnostopoulos CD. Relationship of Endothelial Shear Stress with Plaque Features with Coronary CT Angiography and Vasodilating Capability with PET. Radiology 2021; 300:549-556. [PMID: 34184936 DOI: 10.1148/radiol.2021204381] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Background Advances in three-dimensional reconstruction techniques and computational fluid dynamics of coronary CT angiography (CCTA) data sets make feasible evaluation of endothelial shear stress (ESS) in the vessel wall. Purpose To investigate the relationship between CCTA-derived computational fluid dynamics metrics, anatomic and morphologic characteristics of coronary lesions, and their comparative performance in predicting impaired coronary vasodilating capability assessed by using PET myocardial perfusion imaging (MPI). Materials and Methods In this retrospective study, conducted between October 2019 and September 2020, coronary vessels in patients with stable chest pain and with intermediate probability of coronary artery disease who underwent both CCTA and PET MPI with oxygen 15-labeled water or nitrogen 13 ammonia and quantification of myocardial blood flow were analyzed. CCTA images were used in assessing stenosis severity, lesion-specific total plaque volume (PV), noncalcified PV, calcified PV, and plaque phenotype. PET MPI was used in assessing significant coronary stenosis. The predictive performance of the CCTA-derived parameters was evaluated by using area under the receiver operating characteristic curve (AUC) analysis. Results There were 92 coronary vessels evaluated in 53 patients (mean age, 65 years ± 7; 31 men). ESS was higher in lesions with greater than 50% stenosis versus those without significant stenosis (mean, 15.1 Pa ± 30 vs 4.6 Pa ± 4 vs 3.3 Pa ± 3; P = .004). ESS was higher in functionally significant versus nonsignificant lesions (median, 7 Pa [interquartile range, 5-23 Pa] vs 2.6 Pa [interquartile range, 1.8-5 Pa], respectively; P ≤ .001). Adding ESS to stenosis severity improved prediction (change in AUC, 0.10; 95% CI: 0.04, 0.17; P = .002) for functionally significant lesions. Conclusion The combination of endothelial shear stress with coronary CT angiography (CCTA) stenosis severity improved prediction of an abnormal PET myocardial perfusion imaging result versus CCTA stenosis severity alone. © RSNA, 2021 Online supplemental material is available for this article. See also the editorial by Kusmirek and Wieben in this issue.
Collapse
Affiliation(s)
- Georgios-Eleftherios Kalykakis
- From the Department of Informatics, Ionian University, Kerkyra, Greece (G.E.K., T.E.); Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece (G.E.K., T.P., P.K., C.D.A.); CMR Unit, Royal Brompton Hospital, London, England (A.S.A.); Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece (T.P.); Department of Materials Science and Engineering University of Ioannina, Ioannina, Greece (P.S., D.I.F.); Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece (P.K.); Biomedical Research Institute-FORTH, Ioannina, Greece (A.S.); Cardiothoracic and Vascular Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy (R.L.); Division of Imaging Sciences and Biomedical Engineering, King's College London, London, England (A.T.); Cardiac Imaging (P.A.K.) Department of Nuclear Medicine (A.G.), University Hospital Zurich, Zurich, Switzerland (A.G.); Department of Cardiology, Heart Lung Center, Leiden University Medical Centre, Leiden, the Netherlands (A.J.H.A.S.); Institute of Clinical Physiology, National Research Council-CNR, Pisa, Italy (O.P., D.N.); Institute of Information Science and Technologies, National Research Council-CNR, Pisa, Italy (O.P.); PET Center, University Hospital and University of Turku, Turku, Finland (J.K.); Cardiovascular Department, Fondazione Toscana G. Monasterio, Pisa, Italy (D.N.); and Sant'Anna School of Advanced Studies, Pisa, Italy (D.N.)
| | - Alexios S Antonopoulos
- From the Department of Informatics, Ionian University, Kerkyra, Greece (G.E.K., T.E.); Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece (G.E.K., T.P., P.K., C.D.A.); CMR Unit, Royal Brompton Hospital, London, England (A.S.A.); Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece (T.P.); Department of Materials Science and Engineering University of Ioannina, Ioannina, Greece (P.S., D.I.F.); Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece (P.K.); Biomedical Research Institute-FORTH, Ioannina, Greece (A.S.); Cardiothoracic and Vascular Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy (R.L.); Division of Imaging Sciences and Biomedical Engineering, King's College London, London, England (A.T.); Cardiac Imaging (P.A.K.) Department of Nuclear Medicine (A.G.), University Hospital Zurich, Zurich, Switzerland (A.G.); Department of Cardiology, Heart Lung Center, Leiden University Medical Centre, Leiden, the Netherlands (A.J.H.A.S.); Institute of Clinical Physiology, National Research Council-CNR, Pisa, Italy (O.P., D.N.); Institute of Information Science and Technologies, National Research Council-CNR, Pisa, Italy (O.P.); PET Center, University Hospital and University of Turku, Turku, Finland (J.K.); Cardiovascular Department, Fondazione Toscana G. Monasterio, Pisa, Italy (D.N.); and Sant'Anna School of Advanced Studies, Pisa, Italy (D.N.)
| | - Thomas Pitsargiotis
- From the Department of Informatics, Ionian University, Kerkyra, Greece (G.E.K., T.E.); Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece (G.E.K., T.P., P.K., C.D.A.); CMR Unit, Royal Brompton Hospital, London, England (A.S.A.); Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece (T.P.); Department of Materials Science and Engineering University of Ioannina, Ioannina, Greece (P.S., D.I.F.); Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece (P.K.); Biomedical Research Institute-FORTH, Ioannina, Greece (A.S.); Cardiothoracic and Vascular Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy (R.L.); Division of Imaging Sciences and Biomedical Engineering, King's College London, London, England (A.T.); Cardiac Imaging (P.A.K.) Department of Nuclear Medicine (A.G.), University Hospital Zurich, Zurich, Switzerland (A.G.); Department of Cardiology, Heart Lung Center, Leiden University Medical Centre, Leiden, the Netherlands (A.J.H.A.S.); Institute of Clinical Physiology, National Research Council-CNR, Pisa, Italy (O.P., D.N.); Institute of Information Science and Technologies, National Research Council-CNR, Pisa, Italy (O.P.); PET Center, University Hospital and University of Turku, Turku, Finland (J.K.); Cardiovascular Department, Fondazione Toscana G. Monasterio, Pisa, Italy (D.N.); and Sant'Anna School of Advanced Studies, Pisa, Italy (D.N.)
| | - Panagiotis Siogkas
- From the Department of Informatics, Ionian University, Kerkyra, Greece (G.E.K., T.E.); Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece (G.E.K., T.P., P.K., C.D.A.); CMR Unit, Royal Brompton Hospital, London, England (A.S.A.); Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece (T.P.); Department of Materials Science and Engineering University of Ioannina, Ioannina, Greece (P.S., D.I.F.); Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece (P.K.); Biomedical Research Institute-FORTH, Ioannina, Greece (A.S.); Cardiothoracic and Vascular Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy (R.L.); Division of Imaging Sciences and Biomedical Engineering, King's College London, London, England (A.T.); Cardiac Imaging (P.A.K.) Department of Nuclear Medicine (A.G.), University Hospital Zurich, Zurich, Switzerland (A.G.); Department of Cardiology, Heart Lung Center, Leiden University Medical Centre, Leiden, the Netherlands (A.J.H.A.S.); Institute of Clinical Physiology, National Research Council-CNR, Pisa, Italy (O.P., D.N.); Institute of Information Science and Technologies, National Research Council-CNR, Pisa, Italy (O.P.); PET Center, University Hospital and University of Turku, Turku, Finland (J.K.); Cardiovascular Department, Fondazione Toscana G. Monasterio, Pisa, Italy (D.N.); and Sant'Anna School of Advanced Studies, Pisa, Italy (D.N.)
| | - Themistoklis Exarchos
- From the Department of Informatics, Ionian University, Kerkyra, Greece (G.E.K., T.E.); Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece (G.E.K., T.P., P.K., C.D.A.); CMR Unit, Royal Brompton Hospital, London, England (A.S.A.); Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece (T.P.); Department of Materials Science and Engineering University of Ioannina, Ioannina, Greece (P.S., D.I.F.); Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece (P.K.); Biomedical Research Institute-FORTH, Ioannina, Greece (A.S.); Cardiothoracic and Vascular Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy (R.L.); Division of Imaging Sciences and Biomedical Engineering, King's College London, London, England (A.T.); Cardiac Imaging (P.A.K.) Department of Nuclear Medicine (A.G.), University Hospital Zurich, Zurich, Switzerland (A.G.); Department of Cardiology, Heart Lung Center, Leiden University Medical Centre, Leiden, the Netherlands (A.J.H.A.S.); Institute of Clinical Physiology, National Research Council-CNR, Pisa, Italy (O.P., D.N.); Institute of Information Science and Technologies, National Research Council-CNR, Pisa, Italy (O.P.); PET Center, University Hospital and University of Turku, Turku, Finland (J.K.); Cardiovascular Department, Fondazione Toscana G. Monasterio, Pisa, Italy (D.N.); and Sant'Anna School of Advanced Studies, Pisa, Italy (D.N.)
| | - Pavlos Kafouris
- From the Department of Informatics, Ionian University, Kerkyra, Greece (G.E.K., T.E.); Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece (G.E.K., T.P., P.K., C.D.A.); CMR Unit, Royal Brompton Hospital, London, England (A.S.A.); Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece (T.P.); Department of Materials Science and Engineering University of Ioannina, Ioannina, Greece (P.S., D.I.F.); Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece (P.K.); Biomedical Research Institute-FORTH, Ioannina, Greece (A.S.); Cardiothoracic and Vascular Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy (R.L.); Division of Imaging Sciences and Biomedical Engineering, King's College London, London, England (A.T.); Cardiac Imaging (P.A.K.) Department of Nuclear Medicine (A.G.), University Hospital Zurich, Zurich, Switzerland (A.G.); Department of Cardiology, Heart Lung Center, Leiden University Medical Centre, Leiden, the Netherlands (A.J.H.A.S.); Institute of Clinical Physiology, National Research Council-CNR, Pisa, Italy (O.P., D.N.); Institute of Information Science and Technologies, National Research Council-CNR, Pisa, Italy (O.P.); PET Center, University Hospital and University of Turku, Turku, Finland (J.K.); Cardiovascular Department, Fondazione Toscana G. Monasterio, Pisa, Italy (D.N.); and Sant'Anna School of Advanced Studies, Pisa, Italy (D.N.)
| | - Antonis Sakelarios
- From the Department of Informatics, Ionian University, Kerkyra, Greece (G.E.K., T.E.); Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece (G.E.K., T.P., P.K., C.D.A.); CMR Unit, Royal Brompton Hospital, London, England (A.S.A.); Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece (T.P.); Department of Materials Science and Engineering University of Ioannina, Ioannina, Greece (P.S., D.I.F.); Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece (P.K.); Biomedical Research Institute-FORTH, Ioannina, Greece (A.S.); Cardiothoracic and Vascular Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy (R.L.); Division of Imaging Sciences and Biomedical Engineering, King's College London, London, England (A.T.); Cardiac Imaging (P.A.K.) Department of Nuclear Medicine (A.G.), University Hospital Zurich, Zurich, Switzerland (A.G.); Department of Cardiology, Heart Lung Center, Leiden University Medical Centre, Leiden, the Netherlands (A.J.H.A.S.); Institute of Clinical Physiology, National Research Council-CNR, Pisa, Italy (O.P., D.N.); Institute of Information Science and Technologies, National Research Council-CNR, Pisa, Italy (O.P.); PET Center, University Hospital and University of Turku, Turku, Finland (J.K.); Cardiovascular Department, Fondazione Toscana G. Monasterio, Pisa, Italy (D.N.); and Sant'Anna School of Advanced Studies, Pisa, Italy (D.N.)
| | - Riccardo Liga
- From the Department of Informatics, Ionian University, Kerkyra, Greece (G.E.K., T.E.); Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece (G.E.K., T.P., P.K., C.D.A.); CMR Unit, Royal Brompton Hospital, London, England (A.S.A.); Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece (T.P.); Department of Materials Science and Engineering University of Ioannina, Ioannina, Greece (P.S., D.I.F.); Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece (P.K.); Biomedical Research Institute-FORTH, Ioannina, Greece (A.S.); Cardiothoracic and Vascular Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy (R.L.); Division of Imaging Sciences and Biomedical Engineering, King's College London, London, England (A.T.); Cardiac Imaging (P.A.K.) Department of Nuclear Medicine (A.G.), University Hospital Zurich, Zurich, Switzerland (A.G.); Department of Cardiology, Heart Lung Center, Leiden University Medical Centre, Leiden, the Netherlands (A.J.H.A.S.); Institute of Clinical Physiology, National Research Council-CNR, Pisa, Italy (O.P., D.N.); Institute of Information Science and Technologies, National Research Council-CNR, Pisa, Italy (O.P.); PET Center, University Hospital and University of Turku, Turku, Finland (J.K.); Cardiovascular Department, Fondazione Toscana G. Monasterio, Pisa, Italy (D.N.); and Sant'Anna School of Advanced Studies, Pisa, Italy (D.N.)
| | - Aphrodite Tzifa
- From the Department of Informatics, Ionian University, Kerkyra, Greece (G.E.K., T.E.); Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece (G.E.K., T.P., P.K., C.D.A.); CMR Unit, Royal Brompton Hospital, London, England (A.S.A.); Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece (T.P.); Department of Materials Science and Engineering University of Ioannina, Ioannina, Greece (P.S., D.I.F.); Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece (P.K.); Biomedical Research Institute-FORTH, Ioannina, Greece (A.S.); Cardiothoracic and Vascular Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy (R.L.); Division of Imaging Sciences and Biomedical Engineering, King's College London, London, England (A.T.); Cardiac Imaging (P.A.K.) Department of Nuclear Medicine (A.G.), University Hospital Zurich, Zurich, Switzerland (A.G.); Department of Cardiology, Heart Lung Center, Leiden University Medical Centre, Leiden, the Netherlands (A.J.H.A.S.); Institute of Clinical Physiology, National Research Council-CNR, Pisa, Italy (O.P., D.N.); Institute of Information Science and Technologies, National Research Council-CNR, Pisa, Italy (O.P.); PET Center, University Hospital and University of Turku, Turku, Finland (J.K.); Cardiovascular Department, Fondazione Toscana G. Monasterio, Pisa, Italy (D.N.); and Sant'Anna School of Advanced Studies, Pisa, Italy (D.N.)
| | - Andreas Giannopoulos
- From the Department of Informatics, Ionian University, Kerkyra, Greece (G.E.K., T.E.); Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece (G.E.K., T.P., P.K., C.D.A.); CMR Unit, Royal Brompton Hospital, London, England (A.S.A.); Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece (T.P.); Department of Materials Science and Engineering University of Ioannina, Ioannina, Greece (P.S., D.I.F.); Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece (P.K.); Biomedical Research Institute-FORTH, Ioannina, Greece (A.S.); Cardiothoracic and Vascular Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy (R.L.); Division of Imaging Sciences and Biomedical Engineering, King's College London, London, England (A.T.); Cardiac Imaging (P.A.K.) Department of Nuclear Medicine (A.G.), University Hospital Zurich, Zurich, Switzerland (A.G.); Department of Cardiology, Heart Lung Center, Leiden University Medical Centre, Leiden, the Netherlands (A.J.H.A.S.); Institute of Clinical Physiology, National Research Council-CNR, Pisa, Italy (O.P., D.N.); Institute of Information Science and Technologies, National Research Council-CNR, Pisa, Italy (O.P.); PET Center, University Hospital and University of Turku, Turku, Finland (J.K.); Cardiovascular Department, Fondazione Toscana G. Monasterio, Pisa, Italy (D.N.); and Sant'Anna School of Advanced Studies, Pisa, Italy (D.N.)
| | - Arthur J H A Scholte
- From the Department of Informatics, Ionian University, Kerkyra, Greece (G.E.K., T.E.); Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece (G.E.K., T.P., P.K., C.D.A.); CMR Unit, Royal Brompton Hospital, London, England (A.S.A.); Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece (T.P.); Department of Materials Science and Engineering University of Ioannina, Ioannina, Greece (P.S., D.I.F.); Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece (P.K.); Biomedical Research Institute-FORTH, Ioannina, Greece (A.S.); Cardiothoracic and Vascular Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy (R.L.); Division of Imaging Sciences and Biomedical Engineering, King's College London, London, England (A.T.); Cardiac Imaging (P.A.K.) Department of Nuclear Medicine (A.G.), University Hospital Zurich, Zurich, Switzerland (A.G.); Department of Cardiology, Heart Lung Center, Leiden University Medical Centre, Leiden, the Netherlands (A.J.H.A.S.); Institute of Clinical Physiology, National Research Council-CNR, Pisa, Italy (O.P., D.N.); Institute of Information Science and Technologies, National Research Council-CNR, Pisa, Italy (O.P.); PET Center, University Hospital and University of Turku, Turku, Finland (J.K.); Cardiovascular Department, Fondazione Toscana G. Monasterio, Pisa, Italy (D.N.); and Sant'Anna School of Advanced Studies, Pisa, Italy (D.N.)
| | - Philipp A Kaufmann
- From the Department of Informatics, Ionian University, Kerkyra, Greece (G.E.K., T.E.); Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece (G.E.K., T.P., P.K., C.D.A.); CMR Unit, Royal Brompton Hospital, London, England (A.S.A.); Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece (T.P.); Department of Materials Science and Engineering University of Ioannina, Ioannina, Greece (P.S., D.I.F.); Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece (P.K.); Biomedical Research Institute-FORTH, Ioannina, Greece (A.S.); Cardiothoracic and Vascular Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy (R.L.); Division of Imaging Sciences and Biomedical Engineering, King's College London, London, England (A.T.); Cardiac Imaging (P.A.K.) Department of Nuclear Medicine (A.G.), University Hospital Zurich, Zurich, Switzerland (A.G.); Department of Cardiology, Heart Lung Center, Leiden University Medical Centre, Leiden, the Netherlands (A.J.H.A.S.); Institute of Clinical Physiology, National Research Council-CNR, Pisa, Italy (O.P., D.N.); Institute of Information Science and Technologies, National Research Council-CNR, Pisa, Italy (O.P.); PET Center, University Hospital and University of Turku, Turku, Finland (J.K.); Cardiovascular Department, Fondazione Toscana G. Monasterio, Pisa, Italy (D.N.); and Sant'Anna School of Advanced Studies, Pisa, Italy (D.N.)
| | - Oberdan Parodi
- From the Department of Informatics, Ionian University, Kerkyra, Greece (G.E.K., T.E.); Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece (G.E.K., T.P., P.K., C.D.A.); CMR Unit, Royal Brompton Hospital, London, England (A.S.A.); Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece (T.P.); Department of Materials Science and Engineering University of Ioannina, Ioannina, Greece (P.S., D.I.F.); Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece (P.K.); Biomedical Research Institute-FORTH, Ioannina, Greece (A.S.); Cardiothoracic and Vascular Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy (R.L.); Division of Imaging Sciences and Biomedical Engineering, King's College London, London, England (A.T.); Cardiac Imaging (P.A.K.) Department of Nuclear Medicine (A.G.), University Hospital Zurich, Zurich, Switzerland (A.G.); Department of Cardiology, Heart Lung Center, Leiden University Medical Centre, Leiden, the Netherlands (A.J.H.A.S.); Institute of Clinical Physiology, National Research Council-CNR, Pisa, Italy (O.P., D.N.); Institute of Information Science and Technologies, National Research Council-CNR, Pisa, Italy (O.P.); PET Center, University Hospital and University of Turku, Turku, Finland (J.K.); Cardiovascular Department, Fondazione Toscana G. Monasterio, Pisa, Italy (D.N.); and Sant'Anna School of Advanced Studies, Pisa, Italy (D.N.)
| | - Juhani Knuuti
- From the Department of Informatics, Ionian University, Kerkyra, Greece (G.E.K., T.E.); Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece (G.E.K., T.P., P.K., C.D.A.); CMR Unit, Royal Brompton Hospital, London, England (A.S.A.); Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece (T.P.); Department of Materials Science and Engineering University of Ioannina, Ioannina, Greece (P.S., D.I.F.); Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece (P.K.); Biomedical Research Institute-FORTH, Ioannina, Greece (A.S.); Cardiothoracic and Vascular Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy (R.L.); Division of Imaging Sciences and Biomedical Engineering, King's College London, London, England (A.T.); Cardiac Imaging (P.A.K.) Department of Nuclear Medicine (A.G.), University Hospital Zurich, Zurich, Switzerland (A.G.); Department of Cardiology, Heart Lung Center, Leiden University Medical Centre, Leiden, the Netherlands (A.J.H.A.S.); Institute of Clinical Physiology, National Research Council-CNR, Pisa, Italy (O.P., D.N.); Institute of Information Science and Technologies, National Research Council-CNR, Pisa, Italy (O.P.); PET Center, University Hospital and University of Turku, Turku, Finland (J.K.); Cardiovascular Department, Fondazione Toscana G. Monasterio, Pisa, Italy (D.N.); and Sant'Anna School of Advanced Studies, Pisa, Italy (D.N.)
| | - Dimitrios I Fotiadis
- From the Department of Informatics, Ionian University, Kerkyra, Greece (G.E.K., T.E.); Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece (G.E.K., T.P., P.K., C.D.A.); CMR Unit, Royal Brompton Hospital, London, England (A.S.A.); Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece (T.P.); Department of Materials Science and Engineering University of Ioannina, Ioannina, Greece (P.S., D.I.F.); Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece (P.K.); Biomedical Research Institute-FORTH, Ioannina, Greece (A.S.); Cardiothoracic and Vascular Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy (R.L.); Division of Imaging Sciences and Biomedical Engineering, King's College London, London, England (A.T.); Cardiac Imaging (P.A.K.) Department of Nuclear Medicine (A.G.), University Hospital Zurich, Zurich, Switzerland (A.G.); Department of Cardiology, Heart Lung Center, Leiden University Medical Centre, Leiden, the Netherlands (A.J.H.A.S.); Institute of Clinical Physiology, National Research Council-CNR, Pisa, Italy (O.P., D.N.); Institute of Information Science and Technologies, National Research Council-CNR, Pisa, Italy (O.P.); PET Center, University Hospital and University of Turku, Turku, Finland (J.K.); Cardiovascular Department, Fondazione Toscana G. Monasterio, Pisa, Italy (D.N.); and Sant'Anna School of Advanced Studies, Pisa, Italy (D.N.)
| | - Danilo Neglia
- From the Department of Informatics, Ionian University, Kerkyra, Greece (G.E.K., T.E.); Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece (G.E.K., T.P., P.K., C.D.A.); CMR Unit, Royal Brompton Hospital, London, England (A.S.A.); Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece (T.P.); Department of Materials Science and Engineering University of Ioannina, Ioannina, Greece (P.S., D.I.F.); Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece (P.K.); Biomedical Research Institute-FORTH, Ioannina, Greece (A.S.); Cardiothoracic and Vascular Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy (R.L.); Division of Imaging Sciences and Biomedical Engineering, King's College London, London, England (A.T.); Cardiac Imaging (P.A.K.) Department of Nuclear Medicine (A.G.), University Hospital Zurich, Zurich, Switzerland (A.G.); Department of Cardiology, Heart Lung Center, Leiden University Medical Centre, Leiden, the Netherlands (A.J.H.A.S.); Institute of Clinical Physiology, National Research Council-CNR, Pisa, Italy (O.P., D.N.); Institute of Information Science and Technologies, National Research Council-CNR, Pisa, Italy (O.P.); PET Center, University Hospital and University of Turku, Turku, Finland (J.K.); Cardiovascular Department, Fondazione Toscana G. Monasterio, Pisa, Italy (D.N.); and Sant'Anna School of Advanced Studies, Pisa, Italy (D.N.)
| | - Constantinos D Anagnostopoulos
- From the Department of Informatics, Ionian University, Kerkyra, Greece (G.E.K., T.E.); Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece (G.E.K., T.P., P.K., C.D.A.); CMR Unit, Royal Brompton Hospital, London, England (A.S.A.); Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece (T.P.); Department of Materials Science and Engineering University of Ioannina, Ioannina, Greece (P.S., D.I.F.); Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece (P.K.); Biomedical Research Institute-FORTH, Ioannina, Greece (A.S.); Cardiothoracic and Vascular Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy (R.L.); Division of Imaging Sciences and Biomedical Engineering, King's College London, London, England (A.T.); Cardiac Imaging (P.A.K.) Department of Nuclear Medicine (A.G.), University Hospital Zurich, Zurich, Switzerland (A.G.); Department of Cardiology, Heart Lung Center, Leiden University Medical Centre, Leiden, the Netherlands (A.J.H.A.S.); Institute of Clinical Physiology, National Research Council-CNR, Pisa, Italy (O.P., D.N.); Institute of Information Science and Technologies, National Research Council-CNR, Pisa, Italy (O.P.); PET Center, University Hospital and University of Turku, Turku, Finland (J.K.); Cardiovascular Department, Fondazione Toscana G. Monasterio, Pisa, Italy (D.N.); and Sant'Anna School of Advanced Studies, Pisa, Italy (D.N.)
| |
Collapse
|
10
|
Siogkas PK, Kalykakis GE, Anagnostopoulos CD, Exarchos TP. Fluid Dynamics–Derived Parameters in Coronary Vessels. GeNeDis 2020 2021; 1337:291-297. [DOI: 10.1007/978-3-030-78771-4_32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
11
|
Vlachopoulos CV, Koutagiar IP, Georgakopoulos AT, Pouli AG, Sioni AΚ, Giannouli SΕ, Chondropoulos SD, Stergiou IΕ, Solomou EG, Terentes-Printzios DG, Karakitsios IG, Kafouris PP, Gaitanis A, Pianou NK, Petrocheilou A, Aggeli CI, Stroumpouli E, Marinakis TP, Voulgarelis M, Tousoulis DM, Anagnostopoulos CD. Lymphoma Severity and Type Are Associated With Aortic FDG Uptake by 18F-FDG PET/CT Imaging. JACC CardioOncol 2020; 2:758-770. [PMID: 34396292 PMCID: PMC8352324 DOI: 10.1016/j.jaccao.2020.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 11/02/2020] [Accepted: 11/03/2020] [Indexed: 12/27/2022]
Abstract
Background There is evidence that metabolic disease burden in lymphoma influences patient outcome. However, the impact of disease severity on the cardiovascular system is unknown. Objectives The aim of this study was to examine whether lymphoma is associated with arterial inflammation by investigating the relationship between disease metabolic burden and arterial fluorodeoxyglucose (FDG) uptake. Methods Sixty-two chemotherapy-naïve patients with active Hodgkin’s or non-Hodgkin’s lymphoma were matched (2:1) to individual control groups of lymphoma patients previously treated and free of active disease. All groups underwent 18F-FDG position emission tomography–computed tomography imaging. Disease severity was quantified by metabolic tumor volume (MTV) and total lesion glycolysis corresponding to standardized uptake values (SUVs) ≥41% or ≥2.5 of the maximum SUV within lymphoma regions, and aortic FDG uptake was quantified through the target-to-background ratio (TBR). Inflammatory and disease severity biomarkers were also measured. Results MTV and total lesion glycolysis measurements were significantly correlated with inflammatory and disease biomarkers. Aortic TBR was higher in patients with active non-Hodgkin’s lymphoma compared with control subjects (median difference 0.51; 95% confidence interval [CI]: 0.28 to 0.78; p < 0.001). Similarly, patients with active Hodgkin’s lymphoma had higher values of aortic TBR compared with control subjects (median difference 0.31; 95% CI: 0.15 to 0.49; p < 0.001). In addition, aortic TBR was modestly increased in patients with stage III to IV disease compared with those with stage I to II disease (median aortic TBR: 2.23 [interquartile range: 2.01 to 2.54] vs. 2.06 [interquartile range: 1.83 to 2.27; p = 0.050). In multivariable analysis, aortic FDG uptake and MTV≥2.5 values were independently associated (β = 0.425; 95% CI: 0.189 to 0.662; p = 0.001; R2 = 0.208), as were aortic FDG uptake and MTV≥41% (β = 0.407; 95% CI: 0.167 to 0.649, p = 0.001; R2 = 0.191). Conclusions Aortic wall FDG uptake is related with disease severity indicative of a possible vascular effect of lymphoma. This work highlights a new potential role of molecular imaging in cardio-oncology for evaluating disease severity and its consequences on the vasculature.
Collapse
Key Words
- 18F-FDG, 18F-fluorodeoxyglucose
- BMI, body mass index
- CI, confidence interval
- CT, computed tomography
- CVD, cardiovascular disease
- LDH, lactate dehydrogenase
- MTV, metabolic tumor burden
- PET, positron emission tomography
- SUV, standardized uptake value
- SUVmax, maximum standardized uptake value
- SUVmean, mean standardized uptake value
- TBR, target-to-background ratio
- TLG, total lesion glycolysis
- WBC, white blood cell count
- arterial inflammation
- hsCRP, high-sensitivity C-reactive protein
- lymphoma
- metabolic burden
- positron emission tomography
Collapse
Affiliation(s)
- Charalambos V Vlachopoulos
- Hypertension and Cardiometabolic Syndrome Unit, 1st Department of Cardiology, Hippokration Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Iosif P Koutagiar
- Hypertension and Cardiometabolic Syndrome Unit, 1st Department of Cardiology, Hippokration Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Alexandros T Georgakopoulos
- Center for Experimental Surgery, Clinical and Translational Research, Biomedical Research Foundation, Academy of Athens, Athens, Greece
| | | | | | - Stavroula Ε Giannouli
- 2nd Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Ioanna Ε Stergiou
- Department of Pathophysiology, School of Medicine, University of Athens, Athens, Greece
| | - Eirini G Solomou
- Hypertension and Cardiometabolic Syndrome Unit, 1st Department of Cardiology, Hippokration Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimitrios G Terentes-Printzios
- Hypertension and Cardiometabolic Syndrome Unit, 1st Department of Cardiology, Hippokration Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Ioannis G Karakitsios
- Center for Experimental Surgery, Clinical and Translational Research, Biomedical Research Foundation, Academy of Athens, Athens, Greece
| | - Pavlos P Kafouris
- Center for Experimental Surgery, Clinical and Translational Research, Biomedical Research Foundation, Academy of Athens, Athens, Greece.,Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece
| | - Anastasios Gaitanis
- Center for Experimental Surgery, Clinical and Translational Research, Biomedical Research Foundation, Academy of Athens, Athens, Greece
| | - Nikoletta K Pianou
- Center for Experimental Surgery, Clinical and Translational Research, Biomedical Research Foundation, Academy of Athens, Athens, Greece
| | - Aikaterini Petrocheilou
- Hypertension and Cardiometabolic Syndrome Unit, 1st Department of Cardiology, Hippokration Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Constantina I Aggeli
- Hypertension and Cardiometabolic Syndrome Unit, 1st Department of Cardiology, Hippokration Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Euaggelia Stroumpouli
- Hypertension and Cardiometabolic Syndrome Unit, 1st Department of Cardiology, Hippokration Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Michael Voulgarelis
- Department of Pathophysiology, School of Medicine, University of Athens, Athens, Greece
| | - Dimitrios M Tousoulis
- Hypertension and Cardiometabolic Syndrome Unit, 1st Department of Cardiology, Hippokration Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Constantinos D Anagnostopoulos
- Center for Experimental Surgery, Clinical and Translational Research, Biomedical Research Foundation, Academy of Athens, Athens, Greece
| |
Collapse
|
12
|
Siogkas PK, Kalykakis G, Anagnostopoulos CD, Exarchos TP. The effect of the degree and location of coronary stenosis on the hemodynamic status of a coronary vessel. Annu Int Conf IEEE Eng Med Biol Soc 2020; 2020:2671-2674. [PMID: 33018556 DOI: 10.1109/embc44109.2020.9175302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The ongoing advances in the field of cardiovascular modelling during the past years have allowed for the creation of accurate three-dimensional models of the major coronary arteries. The aforementioned 3D models can accurately mimic the human coronary vasculature if they are combined with sophisticated computational fluid dynamics algorithms and shed light to non-trivial issues that concern the clinicians. One of these issues is to define whether a coronary lesion is more dangerous to present with ischemia if it is at a proximal or a distal part of the vessel. In this work, we aim to investigate the aforementioned issue by reconstructing in 3D a coronary arterial model from a healthy subject using Computed Tomography Coronary Angiography images and by editing it to create eight diseased arterial models that contain one or two lesions of different severities. After carrying out the appropriate blood flow simulations using the finite element method, we observed that the distal lesions are more dangerous than the proximal ones in terms of hemodynamic significance. Moreover, the distal severe stenosis (i.e. 70% diameter reduction) present with the highest peak Wall Shear Stress (WSS) values in comparison to the proximal ones.
Collapse
|
13
|
Siogkas PK, Sakellarios AI, Kyriakidis SK, Anagnostopoulos CD, Pelosi G, Rocchiccioli S, Michalis LK, Fotiadis DI. The effect of error propagation in the 3D reconstruction of coronary segments using CTCA images on crucial hemodynamic parameters. Annu Int Conf IEEE Eng Med Biol Soc 2020; 2019:5006-5009. [PMID: 31946984 DOI: 10.1109/embc.2019.8857829] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The development of 3D reconstruction methods of the coronary vasculature has gained substantial ground during the past years. The accurate 3D reconstruction is of utmost importance because the propagation of errors caused by either equipment calibration errors, human errors or other error sources can seriously affect the computation of critical hemodynamic parameters such as Endothelial Shear Stress, intracoronary pressures etc. In this work, we present a study on how the 3D reconstruction error can affect the subsequent blood flow simulations in 3D coronary arterial models. Eight arterial segments were reconstructed, creating the control models and were then modified in order to create an underestimated and an overestimated model of the same segment using a 5% error. Cross-sectional ESS values, as well as, smartFFR values were calculated to examine the effect of the reconstruction error. As it was expected, the underestimated models presented with higher ESS values and lower smartFFR values, whereas the overestimated models presented with lower ESS values and higher smartFFR values, respectively.
Collapse
|
14
|
Vlachopoulos C, Koutagiar I, Skoumas I, Terentes-Printzios D, Zacharis E, Kolovou G, Stamatelopoulos K, Rallidis L, Katsiki N, Bilianou H, Liberopoulos E, Miliou A, Kafouris P, Georgakopoulos A, Gardikioti V, Tousoulis D, Anagnostopoulos CD. Long-Term Administration of Proprotein Convertase Subtilisin/Kexin Type 9 Inhibitors Reduces Arterial FDG Uptake. JACC Cardiovasc Imaging 2019; 12:2573-2574. [DOI: 10.1016/j.jcmg.2019.09.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/05/2019] [Accepted: 09/19/2019] [Indexed: 11/26/2022]
|
15
|
Koutagiar I, Toutouzas K, Antonopoulos AS, Skoumas I, Benetos G, Georgakopoulos A, Oikonomou EK, Kafouris P, Pianou N, Miliou A, Pitsavos C, Tousoulis D, Antoniades C, Anagnostopoulos CD. P5302Significant correlation of visceral adiposity and adipocytokines with arterial inflammation in genetic dyslipidaemias. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The adipose tissue is now established as a major regulator of cardiovascular status, mediated by the secretion of several bioactive molecules, including adipocytokines. Individuals with genetic dyslipidaemias of either familial combined hyperlipidemia (FCH) or heterozygous familial hypercholesterolemia (heFH) subtype are characterized by accelerated atherosclerosis. Nonetheless, limited data exists on the relationship between adiposity and arterial inflammation, a marker of cardiovascular risk, in this setting.
Purpose
To investigate the relationship between adiposity indices and arterial inflammation evaluated by 18F fluorodeoxyglycose positron emission tomography (PET/CT) in patients with hereditary lipid metabolism disorders.
Methods
Consecutive patients with either FCH or heFH, free of statin therapy, and normolipidaemic individuals underwent PET/CT imaging. Arterial FDG uptake was estimated as the average value of target-to-background ratio (TBR) within aortic and carotid wall. Volumes of subcutaneous adipose tissue (SAT) and visceral adipose tissue (VAT) were measured from CT images between the proximal (cephalic) end of the L1 and distal (caudal) end of the L3 vertebrae by selecting all voxels with attenuation between −190 and −30 Hounsfield Units (HU). Serum adiponectin and leptin levels were measured with ELISA by available commercial kits. For comparisons with arterial TBR, adiponectin and leptin concentrations above and below the 25th percentile, were stratified as high and low, respectively.
Results
In total, 60 individuals (20 FCH, 20 heFH and 20 controls) were included. A modest but significant correlation between SAT volume and arterial TBR (R=0.386, p=0.004) was detected. This relationship did not remain significant after controlling for VAT volume (p=0.303). A strong correlation between VAT volume and arterial TBR (R=0.621, p=0.001) was observed. This relationship remained significant after controlling for SAT volume (R=0.541, p<0.001). Arterial TBR values were higher in individuals with low plasma adiponectin levels (p=0.010). In addition, patients with higher leptin levels exhibited increased arterial FDG uptake compared to subjects with low serum leptin concentrations (p=0.05)
Conclusions
Abdominal adipose tissue imaging markers and serum adipocytokines correlate with arterial inflammation as assessed by PET/CT in patients with familial dyslipidaemias highlighting the role of abdominal adipose tissue for atherosclerosis progression in this population.
Collapse
Affiliation(s)
- I Koutagiar
- Hippokration General Hospital, First Department of Cardiology, Athens, Greece
| | - K Toutouzas
- Hippokration General Hospital, First Department of Cardiology, Athens, Greece
| | - A S Antonopoulos
- Hippokration General Hospital, First Department of Cardiology, Athens, Greece
| | - I Skoumas
- Hippokration General Hospital, First Department of Cardiology, Athens, Greece
| | - G Benetos
- Hippokration General Hospital, First Department of Cardiology, Athens, Greece
| | - A Georgakopoulos
- Academy of Athens Biomedical Research Foundation, Experimental Surgery, Clinical and Translational Research Centre, Athens, Greece
| | - E K Oikonomou
- University of Oxford, Radcliffe Department of Medicine, London, United Kingdom
| | - P Kafouris
- Academy of Athens Biomedical Research Foundation, Experimental Surgery, Clinical and Translational Research Centre, Athens, Greece
| | - N Pianou
- Academy of Athens Biomedical Research Foundation, Experimental Surgery, Clinical and Translational Research Centre, Athens, Greece
| | - A Miliou
- Hippokration General Hospital, First Department of Cardiology, Athens, Greece
| | - C Pitsavos
- Hippokration General Hospital, First Department of Cardiology, Athens, Greece
| | - D Tousoulis
- Hippokration General Hospital, First Department of Cardiology, Athens, Greece
| | - C Antoniades
- University of Oxford, Radcliffe Department of Medicine, London, United Kingdom
| | - C D Anagnostopoulos
- Academy of Athens Biomedical Research Foundation, Experimental Surgery, Clinical and Translational Research Centre, Athens, Greece
| |
Collapse
|
16
|
Anagnostopoulos CD, Siogkas PK, Liga R, Benetos G, Maaniitty T, Sakellarios AI, Koutagiar I, Karakitsios I, Papafaklis MI, Berti V, Sciagrà R, Scholte AJHA, Michalis LK, Gaemperli O, Kaufmann PA, Pelosi G, Parodi O, Knuuti J, Fotiadis DI, Neglia D. Characterization of functionally significant coronary artery disease by a coronary computed tomography angiography-based index: a comparison with positron emission tomography. Eur Heart J Cardiovasc Imaging 2019; 20:897-905. [PMID: 30629151 DOI: 10.1093/ehjci/jey199] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/29/2023] Open
Abstract
Abstract
Aims
To test the hypothesis that virtual functional assessment index (vFAI) is related with regional flow parameters derived by quantitative positron emission tomography (PET) and can be used to assess abnormal vasodilating capability in coronary vessels with stenotic lesions at coronary computed tomography angiography (CCTA).
Methods and results
vFAI, stress myocardial blood flow (MBF), and myocardial flow reserve (MFR) were assessed in 78 patients (mean age 62.2 ± 7.7 years) with intermediate pre-test likelihood of coronary artery disease (CAD). Coronary stenoses ≥50% were considered angiographically significant. PET was considered positive for significant CAD, when more than one contiguous segments showed stress MBF ≤2.3 mL/g/min for 15O-water or <1.79 mL/g/min for 13N-ammonia. MFR thresholds were ≤2.5 and ≤2.0, respectively. vFAI was lower in vessels with abnormal stress MBF (0.76 ± 0.10 vs. 0.89 ± 0.07, P < 0.001) or MFR (0.80 ± 0.10 vs. 0.89 ± 0.07, P < 0.001). vFAI had an accuracy of 78.6% and 75% in unmasking abnormal stress MBF and MFR in 15O-water and 82.7% and 71.2% in 13N-ammonia studies, respectively. Addition of vFAI to anatomical CCTA data increased the ability for predicting abnormal stress MBF and MFR in 15O-water studies [AUCccta + vfai = 0.866, 95% confidence interval (CI) 0.783–0.949; P = 0.013 and AUCccta + vfai = 0.737, 95% CI 0.648–0.825; P = 0.007, respectively]. An incremental value was also demonstrated for prediction of stress MBF (AUCccta + vfai = 0.887, 95% CI 0.799–0.974; P = 0.001) in 13N-ammonia studies. A similar trend was recorded for MFR (AUCccta + vfai = 0.780, 95% CI 0.632–0.929; P = 0.13).
Conclusion
vFAI identifies accurately the presence of impaired vasodilating capability. In combination with anatomical data, vFAI enhances the diagnostic performance of CCTA.
Collapse
Affiliation(s)
| | - Panagiotis K Siogkas
- University of Ioannina, Materials Science and Engineering, Ioannina, Greece
- Biomedical Research Institute, FORTH, Ioannina, Greece
| | - Riccardo Liga
- Institute of Clinical Physiology, National Research Council, Pisa, IT, Italy
| | - Georgios Benetos
- First Department of Cardiology, Hippokration Hospital, National and Kapodistrian University Medical School, Athens, Greece
| | | | | | - Iosif Koutagiar
- First Department of Cardiology, Hippokration Hospital, National and Kapodistrian University Medical School, Athens, Greece
| | - Ioannis Karakitsios
- Biomedical Research Foundation of Academy of Athens, 4 Soranou Ephesiou, Athens, Greece
| | | | - Valentina Berti
- Department of Biomedical, Experimental and Clinical Sciences, Mario Serio, Nuclear Medicine Unit, University of Florence, Largo Brambilla 3, Florence, FI, Italy
| | - Roberto Sciagrà
- Department of Biomedical, Experimental and Clinical Sciences, Mario Serio, Nuclear Medicine Unit, University of Florence, Largo Brambilla 3, Florence, FI, Italy
| | | | | | | | | | - Gualtiero Pelosi
- Institute of Clinical Physiology, National Research Council, Pisa, IT, Italy
| | - Oberdan Parodi
- Institute of Clinical Physiology, National Research Council, Pisa, IT, Italy
| | | | - Dimitrios I Fotiadis
- University of Ioannina, Materials Science and Engineering, Ioannina, Greece
- Biomedical Research Institute, FORTH, Ioannina, Greece
| | - Danilo Neglia
- Institute of Clinical Physiology, National Research Council, Pisa, IT, Italy
- Fondazione Toscana Gabriele Monasterio, Pisa, IT, Italy
| |
Collapse
|
17
|
Brili S, Oikonomou E, Antonopoulos AS, Pianou N, Georgakopoulos A, Koutagiar I, Kafouris P, Stroumpouli E, Dounis C, Metaxas M, Spyrou G, Anagnostopoulos CD, Tousoulis D. 18F-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomographic Imaging Detects Aortic Wall Inflammation in Patients With Repaired Coarctation of Aorta. Circ Cardiovasc Imaging 2019; 11:e007002. [PMID: 29321213 DOI: 10.1161/circimaging.117.007002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Stella Brili
- From the 1st Cardiology Department (S.B., E.O., A.S.A., I.K., D.T.) and Radiology Department (E.S., C.D.), Hippokration Hospital, Athens Medical School, Greece; Center for Experimental Surgery, Clinical, and Translational Research (N.P., A.G., M.M., G.S., C.D.A.), and Center of Systems Biology (P.K.), Biomedical Research Foundation, Academy of Athens, Greece; and Department of Informatics and Telecommunications, University of Athens, Greece (P.K.)
| | - Evangelos Oikonomou
- From the 1st Cardiology Department (S.B., E.O., A.S.A., I.K., D.T.) and Radiology Department (E.S., C.D.), Hippokration Hospital, Athens Medical School, Greece; Center for Experimental Surgery, Clinical, and Translational Research (N.P., A.G., M.M., G.S., C.D.A.), and Center of Systems Biology (P.K.), Biomedical Research Foundation, Academy of Athens, Greece; and Department of Informatics and Telecommunications, University of Athens, Greece (P.K.)
| | - Alexios S Antonopoulos
- From the 1st Cardiology Department (S.B., E.O., A.S.A., I.K., D.T.) and Radiology Department (E.S., C.D.), Hippokration Hospital, Athens Medical School, Greece; Center for Experimental Surgery, Clinical, and Translational Research (N.P., A.G., M.M., G.S., C.D.A.), and Center of Systems Biology (P.K.), Biomedical Research Foundation, Academy of Athens, Greece; and Department of Informatics and Telecommunications, University of Athens, Greece (P.K.)
| | - Nikoletta Pianou
- From the 1st Cardiology Department (S.B., E.O., A.S.A., I.K., D.T.) and Radiology Department (E.S., C.D.), Hippokration Hospital, Athens Medical School, Greece; Center for Experimental Surgery, Clinical, and Translational Research (N.P., A.G., M.M., G.S., C.D.A.), and Center of Systems Biology (P.K.), Biomedical Research Foundation, Academy of Athens, Greece; and Department of Informatics and Telecommunications, University of Athens, Greece (P.K.)
| | - Alexandros Georgakopoulos
- From the 1st Cardiology Department (S.B., E.O., A.S.A., I.K., D.T.) and Radiology Department (E.S., C.D.), Hippokration Hospital, Athens Medical School, Greece; Center for Experimental Surgery, Clinical, and Translational Research (N.P., A.G., M.M., G.S., C.D.A.), and Center of Systems Biology (P.K.), Biomedical Research Foundation, Academy of Athens, Greece; and Department of Informatics and Telecommunications, University of Athens, Greece (P.K.)
| | - Iosif Koutagiar
- From the 1st Cardiology Department (S.B., E.O., A.S.A., I.K., D.T.) and Radiology Department (E.S., C.D.), Hippokration Hospital, Athens Medical School, Greece; Center for Experimental Surgery, Clinical, and Translational Research (N.P., A.G., M.M., G.S., C.D.A.), and Center of Systems Biology (P.K.), Biomedical Research Foundation, Academy of Athens, Greece; and Department of Informatics and Telecommunications, University of Athens, Greece (P.K.)
| | - Pavlos Kafouris
- From the 1st Cardiology Department (S.B., E.O., A.S.A., I.K., D.T.) and Radiology Department (E.S., C.D.), Hippokration Hospital, Athens Medical School, Greece; Center for Experimental Surgery, Clinical, and Translational Research (N.P., A.G., M.M., G.S., C.D.A.), and Center of Systems Biology (P.K.), Biomedical Research Foundation, Academy of Athens, Greece; and Department of Informatics and Telecommunications, University of Athens, Greece (P.K.)
| | - Evangelia Stroumpouli
- From the 1st Cardiology Department (S.B., E.O., A.S.A., I.K., D.T.) and Radiology Department (E.S., C.D.), Hippokration Hospital, Athens Medical School, Greece; Center for Experimental Surgery, Clinical, and Translational Research (N.P., A.G., M.M., G.S., C.D.A.), and Center of Systems Biology (P.K.), Biomedical Research Foundation, Academy of Athens, Greece; and Department of Informatics and Telecommunications, University of Athens, Greece (P.K.)
| | - Christos Dounis
- From the 1st Cardiology Department (S.B., E.O., A.S.A., I.K., D.T.) and Radiology Department (E.S., C.D.), Hippokration Hospital, Athens Medical School, Greece; Center for Experimental Surgery, Clinical, and Translational Research (N.P., A.G., M.M., G.S., C.D.A.), and Center of Systems Biology (P.K.), Biomedical Research Foundation, Academy of Athens, Greece; and Department of Informatics and Telecommunications, University of Athens, Greece (P.K.)
| | - Marinos Metaxas
- From the 1st Cardiology Department (S.B., E.O., A.S.A., I.K., D.T.) and Radiology Department (E.S., C.D.), Hippokration Hospital, Athens Medical School, Greece; Center for Experimental Surgery, Clinical, and Translational Research (N.P., A.G., M.M., G.S., C.D.A.), and Center of Systems Biology (P.K.), Biomedical Research Foundation, Academy of Athens, Greece; and Department of Informatics and Telecommunications, University of Athens, Greece (P.K.)
| | - George Spyrou
- From the 1st Cardiology Department (S.B., E.O., A.S.A., I.K., D.T.) and Radiology Department (E.S., C.D.), Hippokration Hospital, Athens Medical School, Greece; Center for Experimental Surgery, Clinical, and Translational Research (N.P., A.G., M.M., G.S., C.D.A.), and Center of Systems Biology (P.K.), Biomedical Research Foundation, Academy of Athens, Greece; and Department of Informatics and Telecommunications, University of Athens, Greece (P.K.)
| | - Constantinos D Anagnostopoulos
- From the 1st Cardiology Department (S.B., E.O., A.S.A., I.K., D.T.) and Radiology Department (E.S., C.D.), Hippokration Hospital, Athens Medical School, Greece; Center for Experimental Surgery, Clinical, and Translational Research (N.P., A.G., M.M., G.S., C.D.A.), and Center of Systems Biology (P.K.), Biomedical Research Foundation, Academy of Athens, Greece; and Department of Informatics and Telecommunications, University of Athens, Greece (P.K.).
| | - Dimitris Tousoulis
- From the 1st Cardiology Department (S.B., E.O., A.S.A., I.K., D.T.) and Radiology Department (E.S., C.D.), Hippokration Hospital, Athens Medical School, Greece; Center for Experimental Surgery, Clinical, and Translational Research (N.P., A.G., M.M., G.S., C.D.A.), and Center of Systems Biology (P.K.), Biomedical Research Foundation, Academy of Athens, Greece; and Department of Informatics and Telecommunications, University of Athens, Greece (P.K.).
| |
Collapse
|
18
|
Pitsargiotis T, Neglia D, Siogkas PK, Benetos G, Liga R, Sakellarios AI, Maaniitty T, Scholte A, Gaemperli O, Kaufmann PA, Pelosi G, Parodi O, Reyes E, Fotiadis DI, Anagnostopoulos CD. 359Characterization of functionally significant coronary artery disease by a computed tomography coronary angiography (CTCA) based index: a comparison with SPECT. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez146.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- T Pitsargiotis
- Academy of Athens Biomedical Research Foundation, Athens, Greece
| | - D Neglia
- Institute of Clinical Physiology, CNR, Pisa, Italy
| | - P K Siogkas
- Biomedical Research Institute - FORTH, Ioannina, Greece
| | - G Benetos
- University Hospital Zurich, Zurich, Switzerland
| | - R Liga
- Institute of Clinical Physiology, CNR, Pisa, Italy
| | | | | | - A Scholte
- Leiden University Medical Center, Leiden, Netherlands (The)
| | - O Gaemperli
- University Hospital Zurich, Zurich, Switzerland
| | | | - G Pelosi
- Institute of Clinical Physiology, CNR, Pisa, Italy
| | - O Parodi
- Institute of Clinical Physiology, CNR, Pisa, Italy
| | - E Reyes
- Royal Brompton Hospital, London, United Kingdom of Great Britain & Northern Ireland
| | - D I Fotiadis
- University of Ioannina, Materials Science and Engineering, Ioannina, Greece
| | | |
Collapse
|
19
|
Kafouris PP, Koutagiar IP, Georgakopoulos AT, Pianou NK, Metaxas MG, Spyrou GM, Anagnostopoulos CD. Adjustment of vascular 2-deoxy-2-[ 18F]fluoro-D-glucose uptake values over time through a modeling approach. Int J Cardiovasc Imaging 2019; 35:955-964. [PMID: 30706352 DOI: 10.1007/s10554-018-01514-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 12/15/2018] [Indexed: 12/11/2022]
Abstract
To develop and test a model predicting 2-deoxy-2-[18F]fluoro-D-glucose ([18F]FDG) standardized uptake value (SUV) changes over time in the aorta and the superior vena cava (SVC). Maximum aortic SUV and mean SVC SUV were determined at two time points (T1 and T2) in the ascending (ASC), descending (DSC), abdominal (ABD) aorta, aortic arch (ARC) and SVC of patients who have undergone [18F]FDG PET/CT for clinical purposes. For SUV prediction at T2, linear and non-linear models of SUV difference for a given time change were developed in a derivation group. The results were tested in an independent validation group, whilst model reproducibility was tested in patients of the validation group who have undergone a second clinically indicated scan. Applying the linear model in the derivation group, there were no statistically significant differences in measurements obtained in the examined segments: mean differences ranged from 0 ± 0.10 in SVC to 0.01 ± 0.13 in ARC between measured and predicted SUV. In contrast, in the non-linear model, there were statistically significant differences in measurements, except in ARC, with mean differences ranging from 0.04 ± 0.14 in ARC to 0.28 ± 0.13 in ABD. In the validation group using the linear model, there were no statistically significant differences, with mean differences ranging from - 0.01 ± 0.08 in ASC to - 0.03 ± 0.11 in ABD. Regarding reproducibility, mean differences were no statistically significant, ranging from 0.004 ± 0.06 in ASC to - 0.02 ± 0.16 in ABD. We have developed a linear model allowing accurate and reproducible prediction of SUV changes over time in the aorta and SVC.
Collapse
Affiliation(s)
- Pavlos P Kafouris
- Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece
- Experimental Surgery, Clinical and Translational Research Centre, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Iosif P Koutagiar
- First Department of Cardiology, Hippokration Hospital, Athens, Greece
| | - Alexandros T Georgakopoulos
- Experimental Surgery, Clinical and Translational Research Centre, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Nikoletta K Pianou
- Experimental Surgery, Clinical and Translational Research Centre, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Marinos G Metaxas
- Experimental Surgery, Clinical and Translational Research Centre, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - George M Spyrou
- Bioinformatics ERA Chair, The Cyprus Institute of Neurology and Genetics, Nicosia, Cyprus
| | - Constantinos D Anagnostopoulos
- Experimental Surgery, Clinical and Translational Research Centre, Biomedical Research Foundation of the Academy of Athens, Athens, Greece.
| |
Collapse
|
20
|
Tsoukalas C, Geninatti-Crich S, Gaitanis A, Tsotakos T, Paravatou-Petsotas M, Aime S, Jiménez-Juárez R, Anagnostopoulos CD, Djanashvili K, Bouziotis P. Tumor Targeting via Sialic Acid: [ 68Ga]DOTA-en-pba as a New Tool for Molecular Imaging of Cancer with PET. Mol Imaging Biol 2019; 20:798-807. [PMID: 29464496 DOI: 10.1007/s11307-018-1176-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
PURPOSE The aim of this study was to demonstrate the potential of Ga-68-labeled macrocycle (DOTA-en-pba) conjugated with phenylboronic vector for tumor recognition by positron emission tomography (PET), based on targeting of the overexpressed sialic acid (Sia). PROCEDURES The imaging reporter DOTA-en-pba was synthesized and labeled with Ga-68 at high efficiency. Cell binding assay on Mel-C and B16-F10 melanoma cells was used to evaluate melanin production and Sia overexpression to determine the best model for demonstrating the capability of [68Ga]DOTA-en-pba to recognize tumors. The in vivo PET imaging was done with B16-F10 tumor-bearing SCID mice injected with [68Ga]DOTA-en-pba intravenously. Tumor, blood, and urine metabolites were assessed to evaluate the presence of a targeting agent. RESULTS The affinity of [68Ga]DOTA-en-pba to Sia was demonstrated on B16-F10 melanoma cells, after the production of melanin as well as Sia overexpression was proved to be up to four times higher in this cell line compared to that in Mel-C cells. Biodistribution studies in B16-F10 tumor-bearing SCID mice showed blood clearance at the time points studied, while uptake in the tumor peaked at 60 min post-injection (6.36 ± 2.41 % ID/g). The acquired PET images were in accordance with the ex vivo biodistribution results. Metabolite assessment on tumor, blood, and urine samples showed that [68Ga]DOTA-en-pba remains unmetabolized up to at least 60 min post-injection. CONCLUSIONS Our work is the first attempt for in vivo imaging of cancer by targeting overexpression of sialic acid on cancer cells with a radiotracer in PET.
Collapse
Affiliation(s)
- Charalambos Tsoukalas
- Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research "Demokritos", Aghia Paraskevi, 153 10, Athens, Greece
| | - Simonetta Geninatti-Crich
- Department of Molecular Biotechnology and Health Sciences, University of Turin, via Nizza 52, Torino, Italy
| | - Anastasios Gaitanis
- Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou Street, 115 27, Athens, Greece
| | - Theodoros Tsotakos
- Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research "Demokritos", Aghia Paraskevi, 153 10, Athens, Greece
| | - Maria Paravatou-Petsotas
- Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research "Demokritos", Aghia Paraskevi, 153 10, Athens, Greece
| | - Silvio Aime
- Department of Molecular Biotechnology and Health Sciences, University of Turin, via Nizza 52, Torino, Italy
| | - Rogelio Jiménez-Juárez
- Department of Organic Chemistry, National School of Biological Sciences, National Polytechnical Institute, Prolongación de Carpio y Plan de Ayala S/N, 11340, Mexico D.F., Mexico.,Department of Biotechnology, Delft University of Technology, Van der Maasweg, 2629 HZ, Delft, Netherlands
| | | | - Kristina Djanashvili
- Department of Biotechnology, Delft University of Technology, Van der Maasweg, 2629 HZ, Delft, Netherlands
| | - Penelope Bouziotis
- Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research "Demokritos", Aghia Paraskevi, 153 10, Athens, Greece.
| |
Collapse
|
21
|
Koutagiar I, Toutouzas K, Benetos G, Skoumas J, Pianou N, Georgakopoulos A, Antonopoulos A, Oikonomou E, Galanakos S, Metaxas M, Spyrou G, Galiatsatos N, Antoniades C, Tousoulis D, Anagnostopoulos CD. P6270Hepatic FDG uptake and visceral adipose tissue volume in individuals with hereditary hyperlipidaemia syndromes. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- I Koutagiar
- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
| | - K Toutouzas
- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
| | - G Benetos
- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
| | - J Skoumas
- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
| | - N Pianou
- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
| | - A Georgakopoulos
- Academy of Athens Biomedical Research Foundation, Athens, Greece
| | - A Antonopoulos
- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
| | - E Oikonomou
- John Radcliffe Hospital, Department of Cardiology, Oxford, United Kingdom
| | - S Galanakos
- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
| | - M Metaxas
- Academy of Athens Biomedical Research Foundation, Athens, Greece
| | - G Spyrou
- Academy of Athens Biomedical Research Foundation, Athens, Greece
| | - N Galiatsatos
- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
| | - C Antoniades
- John Radcliffe Hospital, Department of Cardiology, Oxford, United Kingdom
| | - D Tousoulis
- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
| | | |
Collapse
|
22
|
Koutagiar I, Toutouzas K, Benetos G, Skoumas J, Pianou N, Georgakopoulos A, Oikonomou G, Antonopoulos A, Galanakos S, Metaxas M, Spyrou G, Oikonomou E, Antoniades C, Anagnostopoulos CD, Tousoulis D. P2761Insulin resistance is strongly associated with vascular inflammation in familial dyslipidaemia syndromes. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- I Koutagiar
- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
| | - K Toutouzas
- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
| | - G Benetos
- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
| | - J Skoumas
- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
| | - N Pianou
- Academy of Athens Biomedical Research Foundation, Athens, Greece
| | - A Georgakopoulos
- Academy of Athens Biomedical Research Foundation, Athens, Greece
| | - G Oikonomou
- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
| | - A Antonopoulos
- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
| | - S Galanakos
- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
| | - M Metaxas
- Academy of Athens Biomedical Research Foundation, Athens, Greece
| | - G Spyrou
- Academy of Athens Biomedical Research Foundation, Athens, Greece
| | - E Oikonomou
- John Radcliffe Hospital, Department of Cardiology, Oxford, United Kingdom
| | - C Antoniades
- John Radcliffe Hospital, Department of Cardiology, Oxford, United Kingdom
| | | | - D Tousoulis
- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
| |
Collapse
|
23
|
Keramida G, Dunford A, Kaya G, Anagnostopoulos CD, Peters AM. Hepato-splenic axis: hepatic and splenic metabolic activities are linked. Am J Nucl Med Mol Imaging 2018; 8:228-238. [PMID: 30042872 PMCID: PMC6056241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 05/22/2018] [Indexed: 06/08/2023]
Abstract
The concept of a hepato-splenic axis has recently been put forward. We aimed to investigate whether hepatic and splenic metabolic activities are linked, and if splenic metabolic activity is increased in non-alcoholic fatty liver disease (NAFLD). Blood clearance rates of phosphorylated 18F-fluorodeoxyglucose were measured in the spleen and liver from dynamic PET using Gjedde-Patlak-Rutland graphical analysis and abdominal aorta for input function in 59 patients undergoing routine PET/CT. Plot gradient (Ki), which represents blood clearance, was divided by intercept (V(0)), which represents tissue FDG distribution volume, and multiplied by blood glucose to give glucose uptake rate per unit tracer distribution volume (MRglu). In addition, liver-to-spleen raw count rate ratio was plotted against time, and gradient (b) divided by intercept (A) to obtain hepatic-to-splenic blood clearance ratio independent of aortic input function. Hepatic steatosis was inferred when hepatic CT density was ≤40 HU. There was no difference in splenic MRglu between 8 patients with inactive lympho-proliferative disease (LPD) as identified by negative PET/CT, 25 with non-haematological malignancy and 13 with normal PET/CT. It was significantly increased in 13 with active LPD, who were therefore excluded, along with 3 more with type-2 diabetes mellitus. Splenic MRglu was higher in patients with hepatic steatosis (4.0±1.6; n = 12) than without (2.6±1.7 μmol/min/100 ml; P = 0.02) and correlated inversely with hepatic CT density (r = -0.49; P<0.001). Hepatic and splenic Ki/V(0) correlated (r = 0.52; P<0.01) in 22 patients in whom the correlation coefficient between b/A and hepatic-to-splenic Ki/V(0) ratio was 0.99 and in whom, therefore, input function errors in graphical analysis could be discounted. In men, splenic longitudinal diameter correlated significantly with hepatic CT density (r = -0.35; P = 0.046), hepatic MRglu (r = 0.44; P = 0.005) and splenic MRglu (r = 0.35; P = 0.046). Splenic Ki/V(0) correlated positively with blood glucose, suggesting sensitivity to insulin. We conclude that hepatic and splenic metabolic activities are linked and that a speculative mechanism, which deserves further investigation, is shared insulin sensitivity. Splenic MRglu and spleen size are increased in NAFLD.
Collapse
Affiliation(s)
- Georgia Keramida
- Royal Brompton and Harefield NHS TrustLondon, UK
- Clinical Imaging Sciences Centre, Brighton Sussex Medical SchoolBrighton, UK
| | | | - Guven Kaya
- Brighton and Sussex University Hospitals NHS TrustBrighton, UK
| | - Constantinos D Anagnostopoulos
- Center for Experimental Surgery, Clinical and Translational Research, Biomedical Research Foundation Academy of AthensGreece
| | - Adrien Michael Peters
- Clinical Imaging Sciences Centre, Brighton Sussex Medical SchoolBrighton, UK
- Brighton and Sussex University Hospitals NHS TrustBrighton, UK
| |
Collapse
|
24
|
Gaitanis A, Kastis GA, Vlastou E, Bouziotis P, Verginis P, Anagnostopoulos CD. Investigation of Image Reconstruction Parameters of the Mediso nanoScan PC Small-Animal PET/CT Scanner for Two Different Positron Emitters Under NEMA NU 4-2008 Standards. Mol Imaging Biol 2018; 19:550-559. [PMID: 27995432 DOI: 10.1007/s11307-016-1035-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE The Tera-Tomo 3D image reconstruction algorithm (a version of OSEM), provided with the Mediso nanoScan® PC (PET8/2) small-animal positron emission tomograph (PET)/x-ray computed tomography (CT) scanner, has various parameter options such as total level of regularization, subsets, and iterations. Also, the acquisition time in PET plays an important role. This study aims to assess the performance of this new small-animal PET/CT scanner for different acquisition times and reconstruction parameters, for 2-deoxy-2-[18F]fluoro-D-glucose ([18F]FDG) and Ga-68, under the NEMA NU 4-2008 standards. PROCEDURES Various image quality metrics were calculated for different realizations of [18F]FDG and Ga-68 filled image quality (IQ) phantoms. RESULTS [18F]FDG imaging produced improved images over Ga-68. The best compromise for the optimization of all image quality factors is achieved for at least 30 min acquisition and image reconstruction with 52 iteration updates combined with a high regularization level. CONCLUSION A high regularization level at 52 iteration updates and 30 min acquisition time were found to optimize most of the figures of merit investigated.
Collapse
Affiliation(s)
- Anastasios Gaitanis
- PET/CT Department and Small Animal PET/CT Unit, Centre for Clinical Research, Experimental Surgery & Translational Research, Biomedical Research Foundation of the Academy of Athens (BRFAA), Athens, Greece.
| | - George A Kastis
- Research Center of Mathematics, Academy of Athens, Athens, Greece
- Radiochemical Studies Laboratory, Institute of Nuclear and Radiological Sciences & Technology, Energy & Safety (I.N.RA.S.T.E.S.), N.C.S.R. "Demokritos", Athens, Greece
| | - Elena Vlastou
- PET/CT Department and Small Animal PET/CT Unit, Centre for Clinical Research, Experimental Surgery & Translational Research, Biomedical Research Foundation of the Academy of Athens (BRFAA), Athens, Greece
| | - Penelope Bouziotis
- Radiochemical Studies Laboratory, Institute of Nuclear and Radiological Sciences & Technology, Energy & Safety (I.N.RA.S.T.E.S.), N.C.S.R. "Demokritos", Athens, Greece
| | - Panayotis Verginis
- Division of Clinical, Experimental Surgery, and Translational Research, Biomedical Research Foundation, Academy of Athens, 4 Soranou Efessiou Street, Athens, Greece
| | - Constantinos D Anagnostopoulos
- PET/CT Department and Small Animal PET/CT Unit, Centre for Clinical Research, Experimental Surgery & Translational Research, Biomedical Research Foundation of the Academy of Athens (BRFAA), Athens, Greece
| |
Collapse
|
25
|
Bonou M, Kapelios CJ, Samarkos M, Benetos G, Tampaki M, Pianou N, Georgakopoulos A, Moyssakis I, Anagnostopoulos CD, Barbetseas J. Early diagnosis of right ventricle–pulmonary artery conduit endocarditis by PET/CT. Int J Infect Dis 2018; 68:24-25. [DOI: 10.1016/j.ijid.2017.12.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Revised: 12/11/2017] [Accepted: 12/14/2017] [Indexed: 11/26/2022] Open
|
26
|
Kigka VI, Rigas G, Sakellarios A, Siogkas P, Andrikos IO, Exarchos TP, Loggitsi D, Anagnostopoulos CD, Michalis LK, Neglia D, Pelosi G, Parodi O, Fotiadis DI. 3D reconstruction of coronary arteries and atherosclerotic plaques based on computed tomography angiography images. Biomed Signal Process Control 2018. [DOI: 10.1016/j.bspc.2017.09.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
27
|
Bouziotis P, Stellas D, Thomas E, Truillet C, Tsoukalas C, Lux F, Tsotakos T, Xanthopoulos S, Paravatou-Petsotas M, Gaitanis A, Moulopoulos LA, Koutoulidis V, Anagnostopoulos CD, Tillement O. 68Ga-radiolabeled AGuIX nanoparticles as dual-modality imaging agents for PET/MRI-guided radiation therapy. Nanomedicine (Lond) 2017. [DOI: 10.2217/nnm-2017-0032] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: The aim of this study was to develop a dual-modality positron emission tomography/magnetic resonance (PET/MR) imaging probe by radiolabeling gadolinium-containing AGuIX derivatives with the positron-emitter Gallium-68 (68Ga). Materials & methods: AGuIX@NODAGA nanoparticles were labeled with 68Ga at high efficiency. Tumor accumulation in an appropriate disease model was assessed by ex vivo biodistribution and in vivo PET/MR imaging. Results: 68Ga-AGuIX@NODAGA was proven to passively accumulate in U87MG human glioblastoma tumor xenografts. Metabolite assessment in serum, urine and tumor samples showed that 68Ga-AGuIX@NODAGA remains unmetabolized up to at least 60 min postinjection. Conclusion: This study demonstrates that 68Ga-AGuIX@NODAGA can be used as a dual-modality PET/MR imaging agent with passive accumulation in the diseased area, thus showing great potential for PET/MR image-guided radiation therapy.
Collapse
Affiliation(s)
- Penelope Bouziotis
- Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research ‘Demokritos,’ Aghia Paraskevi 15310, Athens, Greece
| | - Dimitris Stellas
- Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou Street, 11527, Athens, Greece
| | - Eloïse Thomas
- Institut Lumière Matière, UMR5306 Université Lyon 1-CNRS, Université de Lyon, 69622 Villeurbanne cedex, France
| | - Charles Truillet
- Institut Lumière Matière, UMR5306 Université Lyon 1-CNRS, Université de Lyon, 69622 Villeurbanne cedex, France
| | - Charalampos Tsoukalas
- Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research ‘Demokritos,’ Aghia Paraskevi 15310, Athens, Greece
| | - François Lux
- Institut Lumière Matière, UMR5306 Université Lyon 1-CNRS, Université de Lyon, 69622 Villeurbanne cedex, France
| | - Theodoros Tsotakos
- Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research ‘Demokritos,’ Aghia Paraskevi 15310, Athens, Greece
| | - Stavros Xanthopoulos
- Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research ‘Demokritos,’ Aghia Paraskevi 15310, Athens, Greece
| | - Maria Paravatou-Petsotas
- Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research ‘Demokritos,’ Aghia Paraskevi 15310, Athens, Greece
| | - Anastasios Gaitanis
- Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou Street, 11527, Athens, Greece
| | - Lia Angela Moulopoulos
- First Department of Radiology, School of Medicine, National & Kapodistrian University of Athens, 76 Vasilissis Sofias Avenue, 11528, Athens, Greece
| | - Vassilis Koutoulidis
- First Department of Radiology, School of Medicine, National & Kapodistrian University of Athens, 76 Vasilissis Sofias Avenue, 11528, Athens, Greece
| | | | - Olivier Tillement
- Institut Lumière Matière, UMR5306 Université Lyon 1-CNRS, Université de Lyon, 69622 Villeurbanne cedex, France
| |
Collapse
|
28
|
Keramida G, Anagnostopoulos CD, Peters AM. The extent to which standardized uptake values reflect FDG phosphorylation in the liver and spleen as functions of time after injection of 18F-fluorodeoxyglucose. EJNMMI Res 2017; 7:13. [PMID: 28176243 PMCID: PMC5296268 DOI: 10.1186/s13550-017-0254-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 01/04/2017] [Indexed: 01/23/2023] Open
Abstract
Purpose In FDG PET/CT, standardized uptake value (SUV) is used to measure metabolic activity but detects un-phosphorylated FDG as well as phosphorylated FDG (FDG6P). Our aim was to determine the proportions of intrahepatic and intrasplenic FDG that are phosphorylated after FDG injection and compare them with SUVs. Methods Sixty patients undergoing whole-body PET/CT 60 min post-injection of FDG first had dynamic PET imaging for 30 min with measurement of hepatic and splenic FDG clearances using Patlak-Rutland analysis. The gradient of the Patlak-Rutland plot, which is proportional to clearance (Ki), was normalized to the intercept, which is proportional to FDG distribution volume (V(0)) with the same proportionality constant. Using measured values of Ki/V(0), FDG6P/FDG ratios as functions of time in the two organs were measured for assumed FDG blood disappearance half-times of 40, 50 and 60 min. Hepatic and splenic SUVs were measured from whole-body PET/CT. Results The mean (SD) Ki/V(0) was 0.0036 (0.0021) and 0.0060 (0.0041) ml/min/ml for the liver and spleen, respectively, but the hepatic SUV was 1.36-fold higher than the splenic SUV. This discrepancy was explained by the hepatic V(0) being 1.6-fold higher than the splenic V(0). The percentages of FDG phosphorylated 60 min post-injection were 27, 25 and 23% for the liver and 39, 36 and 34% for the spleen, for blood clearance half-times of 40, 50 and 60 min, respectively. SUV indices correlated poorly with Ki/V(0) for both organs. Conclusions SUV is largely determined by un-phosphorylated FDG in dynamic exchange with blood FDG, explaining the poor correlations between SUV indices and Ki/V(0).
Collapse
Affiliation(s)
- Georgia Keramida
- Clinical Imaging Sciences Centre, Brighton Sussex Medical School, Brighton, UK
| | - Constantinos D Anagnostopoulos
- Center for Experimental Surgery, Clinical and Translational Research, Biomedical Research Foundation Academy of Athens, Athens, Greece
| | - A Michael Peters
- Clinical Imaging Sciences Centre, Brighton Sussex Medical School, Brighton, UK. .,Department of Nuclear Medicine, Royal Sussex County Hospital, Eastern Road, Brighton, BN2 5BE, UK.
| |
Collapse
|
29
|
Paschali AN, Nekolla SG, Evangelou K, Cook GJ, Anagnostopoulos CD. One Coin, No Need to Flip: Shared PET Targets in Cancer and Coronary Artery Disease. AJR Am J Roentgenol 2017; 208:434-445. [PMID: 27897437 DOI: 10.2214/ajr.16.16599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE The purposes of this article are to review the common biologic features of cancer and coronary artery disease assessed with PET tracers, focusing on those already used in the clinic and those with translational potential, and to discuss the current value and expected contribution of PET in diagnosis, risk stratification, and treatment monitoring. CONCLUSION PET using a wide variety of radiotracers enhances understanding of pathophysiologic changes shared by cancer and coronary artery disease, helps establish an accurate diagnosis, and aids in prognostic assessment and management decisions. It is likely that with the evolution of therapeutic strategies for blocking the development and progression of both diseases and with the introduction of novel, specific ligands in clinical practice, PET will play an ever stronger role in diagnosis, risk stratification, and monitoring of therapy.
Collapse
Affiliation(s)
- Anna N Paschali
- 1 Department of Nuclear Medicine, Theagenion Cancer Hospital, Thessaloniki, Greece
| | - Stephen G Nekolla
- 2 Nuklearmedizinische Klinik und Poliklinik, Klinikum Rechts der Isar der Technischen Universitaet München, München, Germany
| | | | - Gary J Cook
- 4 PET Imaging Centre, St Thomas' Hospital, London, UK
| | - Constantinos D Anagnostopoulos
- 5 PET/CT Department and MicroPET/CT Unit, Center for Experimental Surgery, Clinical and Translational Research, Biomedical Research Foundation Academy of Athens, 4 Soranou Ephessiou St, 115 27 Athens, Greece
| |
Collapse
|
30
|
Toutouzas K, Koutagiar I, Benetos G, Aggeli C, Georgakopoulos A, Athanasiadis E, Pianou N, Trachanellis S, Patelis N, Agrogiannis G, Kafouris P, Filis K, Bessias N, Klonaris C, Spyrou G, Tsiamis E, Siores E, Patsouris E, Cokkinos D, Tousoulis D, Anagnostopoulos CD. Inflamed human carotid plaques evaluated by PET/CT exhibit increased temperature: insights from an in vivo study. Eur Heart J Cardiovasc Imaging 2016; 18:1236-1244. [DOI: 10.1093/ehjci/jew219] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 09/25/2016] [Indexed: 12/13/2022] Open
|
31
|
Pianou NK, Georgakopoulos A, Apeithi E, Kloudas S, Zagklavira P, Pefanis A, Anagnostopoulos CD. A case of paravalvular abscess due to Pseudomonas aeruginosa assessed by 18Fluoro-2-deoxyglucose positron emission tomography/computed tomography. Int J Cardiol 2016; 215:463-5. [PMID: 27131765 DOI: 10.1016/j.ijcard.2016.04.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 04/11/2016] [Indexed: 11/17/2022]
Affiliation(s)
- Nikoletta K Pianou
- Center for Experimental Surgery, Clinical & Translational Research, Biomedical Research Foundation Academy of Athens, Greece.
| | - Alexandros Georgakopoulos
- Center for Experimental Surgery, Clinical & Translational Research, Biomedical Research Foundation Academy of Athens, Greece
| | - Evdokia Apeithi
- Department of Internal Medicine, "Sotiria" General and Chest Diseases Hospital of Athens, Greece
| | - Spyridon Kloudas
- Department of Internal Medicine, "Sotiria" General and Chest Diseases Hospital of Athens, Greece
| | - Paraskevi Zagklavira
- Department of Cardiology, "Sotiria" General and Chest Diseases Hospital of Athens, Greece
| | - Angelos Pefanis
- Department of Internal Medicine, "Sotiria" General and Chest Diseases Hospital of Athens, Greece
| | - Constantinos D Anagnostopoulos
- Center for Experimental Surgery, Clinical & Translational Research, Biomedical Research Foundation Academy of Athens, Greece.
| |
Collapse
|
32
|
Anagnostopoulos CD, Georgakopoulos A, Pianou N, Tsirebolos G, Nekolla SG, Danias PG, Rizos IA. PET/CT and CMR imaging in a patient with chest pain and unobstructed coronary vessels. J Nucl Cardiol 2016; 23:326-30. [PMID: 26153262 DOI: 10.1007/s12350-015-0191-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 04/29/2015] [Indexed: 10/23/2022]
Affiliation(s)
- Constantinos D Anagnostopoulos
- Center for Clinical Research, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou Street, 11527, Athens, Greece.
| | - Alexandros Georgakopoulos
- Center for Clinical Research, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou Street, 11527, Athens, Greece
| | - Nikoletta Pianou
- Center for Clinical Research, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou Street, 11527, Athens, Greece
| | - George Tsirebolos
- Second Department of Cardiology, Medical School, National and Kapodistrian University of Athens, General University Hospital "ATTIKON", Athens, Greece
| | - Stephan G Nekolla
- Nuklearmedizinische Klinik und Poliklinik, Klinikum rechts der Isar der Technischen Universitaet München, Munich, Germany
| | - Peter G Danias
- Cardiac MR Center, Hygeia Hospital, Athens, Greece
- Tufts University School of Medicine, Boston, MA, USA
| | - Ioannis-Antonios Rizos
- Second Department of Cardiology, Medical School, National and Kapodistrian University of Athens, General University Hospital "ATTIKON", Athens, Greece
| |
Collapse
|
33
|
Paschali AN, Georgakopoulos AT, Pianou NK, Anagnostopoulos CD. (18)F-fluorodeoxyglucose positron emission tomography/computed tomography in infected polycystic kidney disease. World J Nucl Med 2015; 14:57-9. [PMID: 25709548 PMCID: PMC4337011 DOI: 10.4103/1450-1147.150553] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
A positron emission tomography/computed tomography (PET/CT) study using 18F-fluorodeoxyglucose (18F-FDG) was performed in a 54-year-old female with polycystic kidney disease, fever, and abdominal discomfort. Cyst's infection was suspected, but CT and U/S findings were not specific to accurately depict pyocysts and guide surgical treatment. In PET/CT, both kidneys are enlarged with multiple cysts and little remaining parenchyma. There is intense focal or ring-shaped FDG uptake in cysts in the upper and lower poles of the left kidney indicative of active infection. There is also increased FDG uptake in para-aortic lymph nodes bilaterally. Hepatic and right renal cysts do not present increased FDG uptake. As this case illustrates, FDG PET/CT can be helpful for the precise localization of cyst infections in patients with polycystic kidney disease considered for surgical treatment.
Collapse
Affiliation(s)
- Anna N Paschali
- Centre for Clinical Research, Biomedical Research Foundation of the Academy of Athens, Athens 11527, Greece
| | | | - Nikoletta K Pianou
- Centre for Clinical Research, Biomedical Research Foundation of the Academy of Athens, Athens 11527, Greece
| | | |
Collapse
|
34
|
Truillet C, Bouziotis P, Tsoukalas C, Brugière J, Martini M, Sancey L, Brichart T, Denat F, Boschetti F, Darbost U, Bonnamour I, Stellas D, Anagnostopoulos CD, Koutoulidis V, Moulopoulos LA, Perriat P, Lux F, Tillement O. Ultrasmall particles for Gd-MRI and (68) Ga-PET dual imaging. Contrast Media Mol Imaging 2014; 10:309-19. [PMID: 25483609 DOI: 10.1002/cmmi.1633] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 10/09/2014] [Accepted: 10/10/2014] [Indexed: 12/16/2022]
Abstract
Nanoparticles made of a polysiloxane matrix and surrounded by 1,4,7,10-tetraazacyclododecane-1-glutaric anhydride-4,7,10-triacetic acid (DOTAGA)[Gd(3+) ] and 2,2'-(7-(1-carboxy-4-((2,5-dioxopyrrolidin-1-yl)oxy)-4-oxobutyl)-1,4,7-triazonane-1,4-diyl)diacetic acid) NODAGA[(68) Ga(3+) ] have been synthesized for positron emission tomography/magnetic resonance (PET/MRI) dual imaging. Characterizations were carried out in order to determine the nature of the ligands available for radiolabelling and to quantify them. High radiolabelling purity (>95%) after (68) Ga labelling was obtained. The MR and PET images demonstrate the possibility of using the nanoparticles for a combined PET/MR imaging scanner. The images show fast renal elimination of the nanoparticles after intravenous injection.
Collapse
Affiliation(s)
- Charles Truillet
- ILM, UMR 5306 - Université Claude Bernard Lyon 1, Université de Lyon, 69622, Villeurbanne Cedex, France
| | - Penelope Bouziotis
- Radiochemistry Studies Laboratory, Institute of Nuclear and Radiological Sciences and Technology, Energy and Safety, National Center for Scientific Research 'Demokritos', Athens, Greece
| | - Charalambos Tsoukalas
- Radiochemistry Studies Laboratory, Institute of Nuclear and Radiological Sciences and Technology, Energy and Safety, National Center for Scientific Research 'Demokritos', Athens, Greece
| | - Jérémy Brugière
- ILM, UMR 5306 - Université Claude Bernard Lyon 1, Université de Lyon, 69622, Villeurbanne Cedex, France
| | - Matteo Martini
- ILM, UMR 5306 - Université Claude Bernard Lyon 1, Université de Lyon, 69622, Villeurbanne Cedex, France
| | - Lucie Sancey
- ILM, UMR 5306 - Université Claude Bernard Lyon 1, Université de Lyon, 69622, Villeurbanne Cedex, France
| | - Thomas Brichart
- ILM, UMR 5306 - Université Claude Bernard Lyon 1, Université de Lyon, 69622, Villeurbanne Cedex, France
| | - Franck Denat
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR CNRS 6302, Université de Bourgogne, 21078, Dijon Cedex, France
| | | | - Ulrich Darbost
- ICBMS, UMR 5246 - Université Claude Bernard Lyon 1, Université de Lyon, 69622, Villeurbanne Cedex, France
| | - Isabelle Bonnamour
- ICBMS, UMR 5246 - Université Claude Bernard Lyon 1, Université de Lyon, 69622, Villeurbanne Cedex, France
| | - Dimitris Stellas
- Department of Cancer Biology, Biomedical Research Foundation, Academy of Athens, Athens, Greece
| | - Constantinos D Anagnostopoulos
- Center for Experimental surgery, Clinical and Translational Research, Biomedical Research Foundation, Academy of Athens, Athens, Greece
| | - Vassilis Koutoulidis
- Department of Radiology, University of Athens Medical School, Areteion Hospital, Athens, Greece
| | - Lia A Moulopoulos
- Department of Radiology, University of Athens Medical School, Areteion Hospital, Athens, Greece
| | - Pascal Perriat
- Matériaux Ingénierie et Science, INSA Lyon, UMR 5510, 69621, Villeurbanne Cedex, France
| | - François Lux
- ILM, UMR 5306 - Université Claude Bernard Lyon 1, Université de Lyon, 69622, Villeurbanne Cedex, France
| | - Olivier Tillement
- ILM, UMR 5306 - Université Claude Bernard Lyon 1, Université de Lyon, 69622, Villeurbanne Cedex, France
| |
Collapse
|
35
|
|