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SUN ZH. Cardiovascular computed tomography in cardiovascular disease: An overview of its applications from diagnosis to prediction. J Geriatr Cardiol 2024; 21:550-576. [PMID: 38948894 PMCID: PMC11211902 DOI: 10.26599/1671-5411.2024.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2024] Open
Abstract
Cardiovascular computed tomography angiography (CTA) is a widely used imaging modality in the diagnosis of cardiovascular disease. Advancements in CT imaging technology have further advanced its applications from high diagnostic value to minimising radiation exposure to patients. In addition to the standard application of assessing vascular lumen changes, CTA-derived applications including 3D printed personalised models, 3D visualisations such as virtual endoscopy, virtual reality, augmented reality and mixed reality, as well as CT-derived hemodynamic flow analysis and fractional flow reserve (FFRCT) greatly enhance the diagnostic performance of CTA in cardiovascular disease. The widespread application of artificial intelligence in medicine also significantly contributes to the clinical value of CTA in cardiovascular disease. Clinical value of CTA has extended from the initial diagnosis to identification of vulnerable lesions, and prediction of disease extent, hence improving patient care and management. In this review article, as an active researcher in cardiovascular imaging for more than 20 years, I will provide an overview of cardiovascular CTA in cardiovascular disease. It is expected that this review will provide readers with an update of CTA applications, from the initial lumen assessment to recent developments utilising latest novel imaging and visualisation technologies. It will serve as a useful resource for researchers and clinicians to judiciously use the cardiovascular CT in clinical practice.
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Affiliation(s)
- Zhong-Hua SUN
- Discipline of Medical Radiation Science, Curtin Medical School, Curtin University, Perth, Australia
- Curtin Health Innovation Research Institute (CHIRI), Curtin University, Perth 6012, Australia
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Serruys PW, Kageyama S, Pompilio G, Andreini D, Pontone G, Mushtaq S, La Meir M, De Mey J, Tanaka K, Doenst T, Teichgräber U, Schneider U, Puskas JD, Narula J, Gupta H, Agarwal V, Leipsic J, Masuda S, Kotoku N, Tsai TY, Garg S, Morel MA, Onuma Y. Coronary bypass surgery guided by computed tomography in a low-risk population. Eur Heart J 2024; 45:1804-1815. [PMID: 38583086 PMCID: PMC11129794 DOI: 10.1093/eurheartj/ehae199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/22/2024] [Accepted: 03/18/2024] [Indexed: 04/08/2024] Open
Abstract
BACKGROUND AND AIMS In patients with three-vessel disease and/or left main disease, selecting revascularization strategy based on coronary computed tomography angiography (CCTA) has a high level of virtual agreement with treatment decisions based on invasive coronary angiography (ICA). METHODS In this study, coronary artery bypass grafting (CABG) procedures were planned based on CCTA without knowledge of ICA. The CABG strategy was recommended by a central core laboratory assessing the anatomy and functionality of the coronary circulation. The primary feasibility endpoint was the percentage of operations performed without access to the ICA. The primary safety endpoint was graft patency on 30-day follow-up CCTA. Secondary endpoints included topographical adequacy of grafting, major adverse cardiac and cerebrovascular (MACCE), and major bleeding events at 30 days. The study was considered positive if the lower boundary of confidence intervals (CI) for feasibility was ≥75% (NCT04142021). RESULTS The study enrolled 114 patients with a mean (standard deviation) anatomical SYNTAX score and Society of Thoracic Surgery score of 43.6 (15.3) and 0.81 (0.63), respectively. Unblinding ICA was required in one case yielding a feasibility of 99.1% (95% CI 95.2%-100%). The concordance and agreement in revascularization planning between the ICA- and CCTA-Heart Teams was 82.9% with a moderate kappa of 0.58 (95% CI 0.50-0.66) and between the CCTA-Heart Team and actual treatment was 83.7% with a substantial kappa of 0.61 (95% CI 0.53-0.68). The 30-day follow-up CCTA in 102 patients (91.9%) showed an anastomosis patency rate of 92.6%, whilst MACCE was 7.2% and major bleeding 2.7%. CONCLUSIONS CABG guided by CCTA is feasible and has an acceptable safety profile in a selected population of complex coronary artery disease.
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Affiliation(s)
- Patrick W Serruys
- CORRIB Research Centre for Advanced Imaging and Core Lab, University of Galway, University Road, Galway H91 TK33, Ireland
| | - Shigetaka Kageyama
- CORRIB Research Centre for Advanced Imaging and Core Lab, University of Galway, University Road, Galway H91 TK33, Ireland
| | - Giulio Pompilio
- Centro Cardiologico Monzino, IRCCS, Monzino, Italy
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milano, Italy
| | - Daniele Andreini
- Division of Cardiology and Cardiac Imaging, IRCCS Galeazzi Sant’Ambrogio, Milan, Italy
- Department of Biomedical and Clinical Sciences, University of Milan, Milano, Italy
| | | | | | - Mark La Meir
- Department of Cardiac Surgery, Universitair Ziekenhuis Brussel, VUB, Brussels, Belgium
| | - Johan De Mey
- Department of Radiology, Universitair Ziekenhuis Brussel, VUB, Brussels, Belgium
| | - Kaoru Tanaka
- Department of Radiology, University Hospital Brussels, Brussels, Belgium
| | - Torsten Doenst
- Department of Cardiothoracic Surgery, University Hospital Jena, Jena, Germany
| | - Ulf Teichgräber
- Department of Radiology, University Hospital Jena, Jena, Germany
| | - Ulrich Schneider
- Department of Cardiothoracic Surgery, University Hospital Jena, Jena, Germany
| | - John D Puskas
- Department of Cardiovascular Surgery, Mount Sinai Morningside, New York, NY, USA
| | - Jagat Narula
- University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Himanshu Gupta
- Department of Radiology, The Valley Hospital, Ridgewood, NJ, USA
| | - Vikram Agarwal
- Department of Cardiovascular Surgery, Mount Sinai Morningside, New York, NY, USA
| | - Jonathon Leipsic
- St. Paul’s Hospital, University of British Columbia, Vancouver, BC, Canada
| | - Shinichiro Masuda
- CORRIB Research Centre for Advanced Imaging and Core Lab, University of Galway, University Road, Galway H91 TK33, Ireland
| | - Nozomi Kotoku
- CORRIB Research Centre for Advanced Imaging and Core Lab, University of Galway, University Road, Galway H91 TK33, Ireland
| | - Tsung-Ying Tsai
- CORRIB Research Centre for Advanced Imaging and Core Lab, University of Galway, University Road, Galway H91 TK33, Ireland
| | - Scot Garg
- Department of Cardiology, Royal Blackburn Hospital, Blackburn, UK
| | - Marie-Angele Morel
- CORRIB Research Centre for Advanced Imaging and Core Lab, University of Galway, University Road, Galway H91 TK33, Ireland
| | - Yoshinobu Onuma
- CORRIB Research Centre for Advanced Imaging and Core Lab, University of Galway, University Road, Galway H91 TK33, Ireland
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McDermott MC, Sartoretti T, Stammen L, Martens B, Jost G, Pietsch H, Gutjahr R, Schmidt B, Flohr TG, Alkadhi H, Wildberger JE. Countering Calcium Blooming With Personalized Contrast Media Injection Protocols: The 1-2-3 Rule for Photon-Counting Detector CCTA. Invest Radiol 2024:00004424-990000000-00217. [PMID: 38742928 DOI: 10.1097/rli.0000000000001078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
OBJECTIVE Photon-counting detector computed tomography (PCD-CT) enables spectral data acquisition of CT angiographies allowing for reconstruction of virtual monoenergetic images (VMIs) in routine practice. Specifically, it has potential to reduce the blooming artifacts associated with densely calcified plaques. However, calcium blooming and iodine attenuation are inversely affected by energy level (keV) of the VMIs, creating a challenge for contrast media (CM) injection protocol optimization. A pragmatic and simple rule for calcium-dependent CM injection protocols is investigated and proposed for VMI-based coronary CT angiography with PCD-CT. MATERIALS AND METHODS A physiological circulation phantom with coronary vessels including calcified lesions (maximum CT value >700 HU) with a 50% diameter stenosis was injected into at iodine delivery rates (IDRs) of 0.3, 0.5, 0.7, 1.0, 1.5, 2.0, 2.5, and 3.0 g I/s. Images were acquired using a first-generation dual-source PCD-CT and reconstructed at various VMI levels (between 45 and 190 keV). Iodine attenuation in the coronaries was measured at each IDR for each keV, and blooming artifacts from the calcified lesions were assessed including stenosis grading error (as % overestimation vs true lumen). The IDR to achieve 300 HU at each VMI level was then calculated and compared with stenosis grading accuracy to establish a general rule for CM injection protocols. RESULTS Plaque blooming artifacts and intraluminal iodine attenuation decreased with increasing keV. Fixed windowing (representing absolute worst case) resulted in stenosis overestimation from 77% ± 4% at 45 keV to 5% ± 2% at 190 keV, whereas optimized windowing resulted in overestimation from 29% ± 3% at 45 keV to 4% ± 1% at 190 keV. The required IDR to achieve 300 HU showed a strong linear correlation to VMI energy (R2 = 0.98). Comparison of this linear plot versus stenosis grading error and blooming artifact demonstrated that multipliers of 1, 2, and 3 times the reference IDR for theoretical clinical regimes of no, moderate, and severe calcification density, respectively, can be proposed as a general rule. CONCLUSIONS This study provides a proof-of-concept in an anthropomorphic phantom for a simple pragmatic adaptation of CM injection protocols in coronary CT angiography with PCD-CT. The 1-2-3 rule demonstrates the potential for reducing the effects of calcium blooming artifacts on overall image quality.
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Affiliation(s)
- Michael C McDermott
- From the Department of Radiology and Nuclear Medicine, Maastricht University Medical Center, Maastricht, the Netherlands (M.C.M., T.S., L.S., B.M., T.G.F., J.E.W.); Diagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland (T.S., H.A.); Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, the Netherlands (M.C.M., T.S., L.S., B.M., J.E.W.); Bayer AG, Berlin, Germany (M.C.M., G.J., H.P.); and Computed Tomography Division, Siemens Healthineers AG, Forchheim, Germany (R.G., B.S., T.G.F.)
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Ekmejian A, Howden N, Eipper A, Allahwala U, Ward M, Bhindi R. Association between vessel-specific coronary Aggregated plaque burden, Agatston score and hemodynamic significance of coronary disease (The CAPTivAte study). IJC HEART & VASCULATURE 2024; 51:101384. [PMID: 38496257 PMCID: PMC10940135 DOI: 10.1016/j.ijcha.2024.101384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 02/28/2024] [Accepted: 03/06/2024] [Indexed: 03/19/2024]
Abstract
Background CT coronary angiography (CTCA) is a guideline-endorsed assessment for patients with stable angina and suspected coronary disease. Although associated with excellent negative predictive value in ruling out obstructive coronary disease, there are limitations in the ability of CTCA to predict hemodynamically significant coronary disease. The CAPTivAte study aims to assess the utility of Aggregated Plaque Burden (APB) in predicting ischemia based on Fractional Flow Reserve (FFR). Methods In this retrospective study, patients who had a CTCA and invasive FFR of the LAD were included. The entire length of the LAD was analyzed using semi-automated software which characterized total plaque burden and plaque morphological subtype (including Low Attenuation Plaque (LAP), Non-calcific plaque (NCP) and Calcific Plaque (CP). Aggregated Plaque Burden (APB) was calculated. Univariate and multivariate analysis were performed to assess the association between these CT-derived parameters and invasive FFR. Results There were 145 patients included in this study. 84.8 % of patients were referred with stable angina. There was a significant linear association between APB and FFR in both univariate and multivariate analysis (Adjusted R-squared = 0.0469; p = 0.035). Mean Agatston scores are higher in FFR positive vessels compared to FFR negative vessels (371.6 (±443.8) vs 251.9 (±283.5, p = 0.0493). Conclusion CTCA-derived APB is a reliable predictor of ischemia assessed using invasive FFR and may aid clinicians in rationalizing invasive vs non-invasive management strategies. Vessel-specific Agatston scores are significantly higher in FFR-positive vessels than in FFR-negative vessels. Associations between HU-derived plaque subtype and invasive FFR were inconclusive in this study.
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Affiliation(s)
- Avedis Ekmejian
- Royal North Shore Hospital, Australia
- North Shore Private Hospital, Australia
- University of Sydney Northern Clinical School, Australia
| | - Nicklas Howden
- Royal North Shore Hospital, Australia
- North Shore Private Hospital, Australia
| | | | - Usaid Allahwala
- Royal North Shore Hospital, Australia
- North Shore Private Hospital, Australia
- University of Sydney Northern Clinical School, Australia
| | - Michael Ward
- Royal North Shore Hospital, Australia
- North Shore Private Hospital, Australia
- University of Sydney Northern Clinical School, Australia
| | - Ravinay Bhindi
- Royal North Shore Hospital, Australia
- North Shore Private Hospital, Australia
- University of Sydney Northern Clinical School, Australia
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Kang DK. [Assessment of Coronary Stenosis Using Coronary CT Angiography in Patients with High Calcium Scores: Current Limitations and Future Perspectives]. JOURNAL OF THE KOREAN SOCIETY OF RADIOLOGY 2024; 85:270-296. [PMID: 38617859 PMCID: PMC11009141 DOI: 10.3348/jksr.2023.0134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 02/17/2024] [Accepted: 03/07/2024] [Indexed: 04/16/2024]
Abstract
Coronary CT angiography (CCTA) is recognized for its role as a gatekeeper for invasive coronary angiography in patients suspected of coronary artery disease because it can detect significant coronary stenosis with high accuracy. However, heavy plaque in the coronary artery makes it difficult to visualize the lumen, which can lead to errors in the interpretation of the CCTA results. This is primarily due to the limited spatial resolution of CT scanners, resulting in blooming artifacts caused by calcium. However, coronary stenosis with high calcium scores often requires evaluation using CCTA. Technological methods to overcome these limitations include the introduction of high-resolution CT scanners, the development of reconstruction techniques, and the subtraction technique. Methods to improve reading ability, such as the setting of appropriate window width and height, and evaluation of the position of calcified plaque and residual visibility of the lumen in cross-sectional images, are also recommended.
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Onnis C, Virmani R, Kawai K, Nardi V, Lerman A, Cademartiri F, Scicolone R, Boi A, Congiu T, Faa G, Libby P, Saba L. Coronary Artery Calcification: Current Concepts and Clinical Implications. Circulation 2024; 149:251-266. [PMID: 38227718 PMCID: PMC10794033 DOI: 10.1161/circulationaha.123.065657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
Coronary artery calcification (CAC) accompanies the development of advanced atherosclerosis. Its role in atherosclerosis holds great interest because the presence and burden of coronary calcification provide direct evidence of the presence and extent of coronary artery disease; furthermore, CAC predicts future events independently of concomitant conventional cardiovascular risk factors and to a greater extent than any other noninvasive biomarker of this disease. Nevertheless, the relationship between CAC and the susceptibility of a plaque to provoke a thrombotic event remains incompletely understood. This review summarizes the current understanding and literature on CAC. It outlines the pathophysiology of CAC and reviews laboratory, histopathological, and genetic studies, as well as imaging findings, to characterize different types of calcification and to elucidate their implications. Some patterns of calcification such as microcalcification portend increased risk of rupture and cardiovascular events and may improve prognosis assessment noninvasively. However, contemporary computed tomography cannot assess early microcalcification. Limited spatial resolution and blooming artifacts may hinder estimation of degree of coronary artery stenosis. Technical advances such as photon counting detectors and combination with nuclear approaches (eg, NaF imaging) promise to improve the performance of cardiac computed tomography. These innovations may speed achieving the ultimate goal of providing noninvasively specific and clinically actionable information.
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Affiliation(s)
- Carlotta Onnis
- Department of Radiology, Azienda Ospedaliero Universitaria (A.O.U.), di Cagliari – Polo di Monserrato s.s. 554 Monserrato (Cagliari) 09045, ITALY
| | - Renu Virmani
- Department of Cardiovascular Pathology, CVPath Institute, 19 Firstfield Road, Gaithersburg, MD
| | - Kenji Kawai
- Department of Cardiovascular Pathology, CVPath Institute, 19 Firstfield Road, Gaithersburg, MD
| | - Valentina Nardi
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN
| | - Amir Lerman
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN
| | | | - Roberta Scicolone
- Department of Radiology, Azienda Ospedaliero Universitaria (A.O.U.), di Cagliari – Polo di Monserrato s.s. 554 Monserrato (Cagliari) 09045, ITALY
| | - Alberto Boi
- Department of Cardiology, Azienda Ospedaliera Brotzu, Cagliari Italy
| | - Terenzio Congiu
- Department of Pathology, Azienda Ospedaliero Universitaria (A.O.U.), di Cagliari – Ospedale San Giovanni di Dio (Cagliari) 09100 ITALY
| | - Gavino Faa
- Department of Pathology, Azienda Ospedaliero Universitaria (A.O.U.), di Cagliari – Ospedale San Giovanni di Dio (Cagliari) 09100 ITALY
| | - Peter Libby
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA
| | - Luca Saba
- Department of Radiology, Azienda Ospedaliero Universitaria (A.O.U.), di Cagliari – Polo di Monserrato s.s. 554 Monserrato (Cagliari) 09045, ITALY
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Sun Z, Silberstein J, Vaccarezza M. Cardiovascular Computed Tomography in the Diagnosis of Cardiovascular Disease: Beyond Lumen Assessment. J Cardiovasc Dev Dis 2024; 11:22. [PMID: 38248892 PMCID: PMC10816599 DOI: 10.3390/jcdd11010022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/10/2024] [Accepted: 01/11/2024] [Indexed: 01/23/2024] Open
Abstract
Cardiovascular CT is being widely used in the diagnosis of cardiovascular disease due to the rapid technological advancements in CT scanning techniques. These advancements include the development of multi-slice CT, from early generation to the latest models, which has the capability of acquiring images with high spatial and temporal resolution. The recent emergence of photon-counting CT has further enhanced CT performance in clinical applications, providing improved spatial and contrast resolution. CT-derived fractional flow reserve is superior to standard CT-based anatomical assessment for the detection of lesion-specific myocardial ischemia. CT-derived 3D-printed patient-specific models are also superior to standard CT, offering advantages in terms of educational value, surgical planning, and the simulation of cardiovascular disease treatment, as well as enhancing doctor-patient communication. Three-dimensional visualization tools including virtual reality, augmented reality, and mixed reality are further advancing the clinical value of cardiovascular CT in cardiovascular disease. With the widespread use of artificial intelligence, machine learning, and deep learning in cardiovascular disease, the diagnostic performance of cardiovascular CT has significantly improved, with promising results being presented in terms of both disease diagnosis and prediction. This review article provides an overview of the applications of cardiovascular CT, covering its performance from the perspective of its diagnostic value based on traditional lumen assessment to the identification of vulnerable lesions for the prediction of disease outcomes with the use of these advanced technologies. The limitations and future prospects of these technologies are also discussed.
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Affiliation(s)
- Zhonghua Sun
- Curtin Medical School, Curtin University, Perth, WA 6102, Australia; (J.S.); (M.V.)
- Curtin Health Innovation Research Institute (CHIRI), Curtin University, Perth, WA 6102, Australia
| | - Jenna Silberstein
- Curtin Medical School, Curtin University, Perth, WA 6102, Australia; (J.S.); (M.V.)
| | - Mauro Vaccarezza
- Curtin Medical School, Curtin University, Perth, WA 6102, Australia; (J.S.); (M.V.)
- Curtin Health Innovation Research Institute (CHIRI), Curtin University, Perth, WA 6102, Australia
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Okutsu M, Mitomo S, Onishi H, Nakajima A, Yabushita H, Matsuoka S, Kawamoto H, Watanabe Y, Tanaka K, Naganuma T, Tahara S, Nakamura S, Basavarajaiah S, Nakamura S. The estimation of coronary artery calcium thickness by computed tomography angiography based on optical coherence tomography measurements. Heart Vessels 2023; 38:1305-1317. [PMID: 37422802 DOI: 10.1007/s00380-023-02286-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 06/29/2023] [Indexed: 07/11/2023]
Abstract
Optical coherence tomography (OCT) is recommended to be the most appropriate modality in assessing calcium thickness, however, it has limitations associated with infrared attenuation. Although coronary computed tomography angiography (CCTA) detects calcification, it has low resolution and hence not recommended to measure the calcium size. The aim of this study was to devise a simple algorithm to estimate calcium thickness based on the CCTA image. A total of 68 patients who had CCTA for suspected coronary artery disease and subsequently went on to have OCT were included in the study. 238 lesions of them divided into derivation and validation dataset at 2:1 ratio (47 patients with 159 lesions and 21 with 79, respectively) were analyzed. A new method was developed to estimate calcium thickness from the maximum CT density within the calcification and compared with calcium thickness measured by OCT. Maximum Calcium density and measured calcium-border CT density had a good correlation with a linear equation of y = 0.58x + 201 (r = 0.892, 95% CI 0.855-0.919, p < 0.001). The estimated calcium thickness derived from this equation showed strong agreement with measured calcium thickness in validation and derivation dataset (r2 = 0.481 and 0.527, 95% CI 0.609-0.842 and 0.497-0.782, p < 0.001 in both, respectively), more accurate than the estimation by full width at half maximum and inflection point method. In conclusion, this novel method provided the estimation of calcium thickness more accurately than conventional methods.
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Affiliation(s)
- Masaaki Okutsu
- Department of Cardiovascular Medicine, New Tokyo Hospital, 1271, Wanagaya, Matsudo, Chiba, 270-2232, Japan.
| | - Satoru Mitomo
- Department of Cardiovascular Medicine, New Tokyo Hospital, 1271, Wanagaya, Matsudo, Chiba, 270-2232, Japan
| | - Hirokazu Onishi
- Department of Cardiovascular Medicine, New Tokyo Hospital, 1271, Wanagaya, Matsudo, Chiba, 270-2232, Japan
| | - Akihiro Nakajima
- Department of Cardiovascular Medicine, New Tokyo Hospital, 1271, Wanagaya, Matsudo, Chiba, 270-2232, Japan
| | - Hiroto Yabushita
- Department of Cardiovascular Medicine, New Tokyo Hospital, 1271, Wanagaya, Matsudo, Chiba, 270-2232, Japan
| | - Satoshi Matsuoka
- Department of Cardiovascular Medicine, New Tokyo Hospital, 1271, Wanagaya, Matsudo, Chiba, 270-2232, Japan
| | - Hiroyoshi Kawamoto
- Department of Cardiovascular Medicine, New Tokyo Hospital, 1271, Wanagaya, Matsudo, Chiba, 270-2232, Japan
| | - Yusuke Watanabe
- Department of Cardiovascular Medicine, New Tokyo Hospital, 1271, Wanagaya, Matsudo, Chiba, 270-2232, Japan
| | - Kentaro Tanaka
- Department of Cardiovascular Medicine, New Tokyo Hospital, 1271, Wanagaya, Matsudo, Chiba, 270-2232, Japan
| | - Toru Naganuma
- Department of Cardiovascular Medicine, New Tokyo Hospital, 1271, Wanagaya, Matsudo, Chiba, 270-2232, Japan
| | - Satoko Tahara
- Department of Cardiovascular Medicine, New Tokyo Hospital, 1271, Wanagaya, Matsudo, Chiba, 270-2232, Japan
| | - Shotaro Nakamura
- Department of Cardiovascular Medicine, New Tokyo Hospital, 1271, Wanagaya, Matsudo, Chiba, 270-2232, Japan
| | - Sandeep Basavarajaiah
- Department of Cardiology, Heartlands Hospital, University Hospitals Birmingham, Birmingham, UK
| | - Sunao Nakamura
- Department of Cardiovascular Medicine, New Tokyo Hospital, 1271, Wanagaya, Matsudo, Chiba, 270-2232, Japan
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Wopperer SB, Kotronias R, Marin F, Benenati S, Della Mora F, Portolan L, Banning AP, De Maria GL. The role of invasive and non-invasive imaging technologies and calcium modification therapies in the evaluation and management of coronary artery calcifications. Front Cardiovasc Med 2023; 10:1133510. [PMID: 37089880 PMCID: PMC10118029 DOI: 10.3389/fcvm.2023.1133510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 03/20/2023] [Indexed: 04/09/2023] Open
Abstract
The treatment of coronary artery disease (CAD) has advanced significantly in recent years due to improvements in medical therapy and percutaneous or surgical revascularization. However, a persistent obstacle in the percutaneous management of CAD is coronary artery calcification (CAC), which portends to higher rates of procedural challenges, post-intervention complications, and overall poor prognosis. With the advent of novel multimodality imaging technologies spanning from intravascular ultrasound to optical coherence tomography to coronary computed tomography angiography combined with advances in calcium debulking and modification techniques, CACs are now targets for intervention with growing success. This review will summarize the most recent developments in the diagnosis and characterization of CAC, offer a comparison of the aforementioned imaging technologies including which ones are most suitable for specific clinical presentations, and review the CAC modifying therapies currently available.
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Affiliation(s)
- Samuel B. Wopperer
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, United States
| | - Rafail Kotronias
- Oxford Heart Centre, John Radcliffe Hospital, Oxford University Hospitals, NHS Foundation Trust, Oxford, United Kingdom
| | - Federico Marin
- Oxford Heart Centre, John Radcliffe Hospital, Oxford University Hospitals, NHS Foundation Trust, Oxford, United Kingdom
| | - Stefano Benenati
- Oxford Heart Centre, John Radcliffe Hospital, Oxford University Hospitals, NHS Foundation Trust, Oxford, United Kingdom
| | - Francesco Della Mora
- Oxford Heart Centre, John Radcliffe Hospital, Oxford University Hospitals, NHS Foundation Trust, Oxford, United Kingdom
- Division of Cardiology, Department of Medicine, University of Verona, Verona, Italy
| | - Leonardo Portolan
- Division of Cardiology, Department of Medicine, University of Verona, Verona, Italy
| | - Adrian P. Banning
- Oxford Heart Centre, John Radcliffe Hospital, Oxford University Hospitals, NHS Foundation Trust, Oxford, United Kingdom
| | - Giovanni Luigi De Maria
- Oxford Heart Centre, John Radcliffe Hospital, Oxford University Hospitals, NHS Foundation Trust, Oxford, United Kingdom
- Correspondence: Giovanni Luigi De Maria
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Geerlings-Batt J, Sun Z. Coronary computed tomography angiography assessment of relationship between right coronary artery-aorta angle and the development of coronary artery disease. Quant Imaging Med Surg 2023; 13:1948-1956. [PMID: 36915318 PMCID: PMC10006145 DOI: 10.21037/qims-22-655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 12/26/2022] [Indexed: 02/07/2023]
Abstract
Whilst a correlation has been established between wide left main coronary artery bifurcation [left anterior descending-left circumflex (LAD-LCx)] angle (>80°) and the development of coronary artery disease (CAD), this retrospective, causal-comparative pilot study aimed to explore whether a relationship exists between right coronary artery (RCA)-aorta angle and CAD. Thirty normal cases were identified via radiology reports and selected as the control group with coronary computed tomography angiography (CCTA) scans performed on a 320-slice computed tomography (CT) scanner. Thirty CAD cases were selected with invasive coronary angiography performed to confirm the degree of stenosis, and CCTA performed on dual source and 320-slice CT scanners. An independent sample t-test was used to compare the differences in coronary angles between the normal and CAD group, and analysis of variance (ANOVA) was used to assess for significant differences between coronary angles in normal and CAD subgroups. Coronary angle measurements were conducted by two independent assessors with high intraclass correlation (r=0.971-0.998, P<0.001). RCA-aorta angle measurements were significantly larger in the normal group [87.47°, 95% confidence interval (CI): 79.31° to 95.78°] compared to the CAD group (76.82°, 95% CI: 67.82° to 85.61°, P=0.05). No significant difference was found between RCA-aorta angle and degree of coronary stenosis (P=0.75). This study suggests a relationship between narrow RCA-aorta angle and CAD.
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Affiliation(s)
- Jade Geerlings-Batt
- Discipline of Medical Radiation Science, Curtin Medical School, Curtin University, Perth, WA, Australia
| | - Zhonghua Sun
- Discipline of Medical Radiation Science, Curtin Medical School, Curtin University, Perth, WA, Australia
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11
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Du G, Cao M, Hou Z, Cai Z, Yu T, Zheng H, Dai Z, Yang Z, Shen J, Lin D. The value of quantitative plaque analysis based on coronary computed tomography angiography in predicting the percutaneous coronary intervention outcome of chronic total occlusion lesions. Quant Imaging Med Surg 2023; 13:1563-1576. [PMID: 36915301 PMCID: PMC10006140 DOI: 10.21037/qims-22-428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 12/08/2022] [Indexed: 02/12/2023]
Abstract
Background Due to the uncertainty of the success of percutaneous coronary intervention (PCI) and the complexity of selecting suitable treatment cases, the interventional outcome of coronary chronic total occlusion (CTO) remains challenging. The purpose of this study was to evaluate the role of quantitative plaque analysis based on coronary computed tomography angiography (CCTA) in predicting the CTO-PCI outcome. Methods We retrospectively included 78 patients with CTO (80 lesions) confirmed by invasive coronary angiography from July 2016 to December 2018. All patients underwent PCI treatment according to standard practice. A total of 47 lesions in 47 patients were successfully treated with PCI. PCI failed in the remaining 33 lesions in 31 patients. The following conventional CCTA morphologic parameters were evaluated and compared between the PCI-success and PCI-failure groups: stump morphology; occlusion length, tortuous course; CTO lesion calcium; bridging collateral vessel; retrograde collateral vessel; the appearance of the occluded distal segment; and quantitative CTO plaque characteristics, including total plaque volume, calcified plaque (CP) volume, noncalcified plaque (NCP) volume, low-density noncalcified plaque (LDNCP) volume, and plaque length. Univariate and multivariate logistic regression analyses were performed to determine independent parameters predictive of CTO-PCI outcomes. The predictive performances were assessed using receiver operating characteristic curve analysis. Results The blunt stump was the only independent CCTA morphologic parameter to predict the outcome of CTO-PCI [odds ratio (OR): 10.807; P<0.001]. NCP volume (OR: 1.018; P<0.001), CP volume (OR: 1.026; P=0.049), and plaque length (OR: 1.058; P=0.037) were independent quantitative CTO plaque characteristics predictive of CTO-PCI outcomes. The plaque-based model combining NCP volume with CP volume and plaque length had a higher area under the curve (AUC =0.96) than did the morphology-based model that included blunt stump (AUC 0.68) in predicting the outcomes of CTO-PCI (P<0.001). Conclusions The CCTA-based plaque characteristics, including NCP volume, CP volume, and plaque length, outperformed morphologic parameters in predicting the CTO-PCI outcomes.
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Affiliation(s)
- Guangzhou Du
- Department of Radiology, Shantou Central Hospital, Shantou, China
| | - Minghui Cao
- Department of Radiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhihui Hou
- Department of Radiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhaoxi Cai
- Department of Radiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Taihui Yu
- Department of Radiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Haisheng Zheng
- Department of Cardiology, Shantou Central Hospital, Shantou, China
| | - Zhuozhi Dai
- Department of Radiology, Shantou Central Hospital, Shantou, China.,Department of Radiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zehong Yang
- Department of Radiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jun Shen
- Department of Radiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Daiying Lin
- Department of Radiology, Shantou Central Hospital, Shantou, China
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12
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Pack JD, Xu M, Wang G, Baskaran L, Min J, De Man B. Cardiac CT blooming artifacts: clinical significance, root causes and potential solutions. Vis Comput Ind Biomed Art 2022; 5:29. [PMID: 36484886 PMCID: PMC9733770 DOI: 10.1186/s42492-022-00125-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 11/03/2022] [Indexed: 12/13/2022] Open
Abstract
This review paper aims to summarize cardiac CT blooming artifacts, how they present clinically and what their root causes and potential solutions are. A literature survey was performed covering any publications with a specific interest in calcium blooming and stent blooming in cardiac CT. The claims from literature are compared and interpreted, aiming at narrowing down the root causes and most promising solutions for blooming artifacts. More than 30 journal publications were identified with specific relevance to blooming artifacts. The main reported causes of blooming artifacts are the partial volume effect, motion artifacts and beam hardening. The proposed solutions are classified as high-resolution CT hardware, high-resolution CT reconstruction, subtraction techniques and post-processing techniques, with a special emphasis on deep learning (DL) techniques. The partial volume effect is the leading cause of blooming artifacts. The partial volume effect can be minimized by increasing the CT spatial resolution through higher-resolution CT hardware or advanced high-resolution CT reconstruction. In addition, DL techniques have shown great promise to correct for blooming artifacts. A combination of these techniques could avoid repeat scans for subtraction techniques.
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Affiliation(s)
- Jed D. Pack
- grid.418143.b0000 0001 0943 0267GE Research, Niskayuna, NY 12309 USA
| | - Mufeng Xu
- grid.33647.350000 0001 2160 9198Rensselaer Polytechnic Institute, Troy, NY 12180 USA
| | - Ge Wang
- grid.33647.350000 0001 2160 9198Rensselaer Polytechnic Institute, Troy, NY 12180 USA
| | - Lohendran Baskaran
- grid.5386.8000000041936877XWeill Cornell Medicine, New York, NY 10065 USA ,grid.419385.20000 0004 0620 9905National Heart Centre, Singapore, 169609 Singapore
| | - James Min
- grid.5386.8000000041936877XWeill Cornell Medicine, New York, NY 10065 USA ,Cleerly, New York, NY 10065 USA
| | - Bruno De Man
- grid.418143.b0000 0001 0943 0267GE Research, Niskayuna, NY 12309 USA
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13
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Ban X, Li Z, Duan Y, Xu K, Xiong J, Tu Y. Advanced Imaging Modalities Provide New Insights into Coronary Artery Calcification. Eur J Radiol 2022; 157:110601. [DOI: 10.1016/j.ejrad.2022.110601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 10/07/2022] [Accepted: 11/06/2022] [Indexed: 11/11/2022]
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14
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Al Rifai M, Ahmed AI, Alahdab F, Al-Mallah MH. Clinical utility of coronary artery computed tomography angiography- What we know and What's new? Prog Cardiovasc Dis 2022; 75:12-20. [PMID: 36336026 DOI: 10.1016/j.pcad.2022.10.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Accepted: 10/23/2022] [Indexed: 11/06/2022]
Abstract
Coronary computed tomography (CT) angiography (CCTA) is increasingly recognized for diagnosing obstructive coronary artery disease (CAD) among patients presenting with chest pain. In this review, we summarize the utility of CCTA to determine luminal stenosis and identifying coronary plaques with high-risk features. We review different scoring systems that can quantify total plaque burden including how artificial intelligence can facilitate more detailed plaque assessment. We discuss how CCTA can also be used to detect the hemodynamic significance of CAD lesions (fractional flow reserve CT and CT perfusion) and also local factors outside the vessel wall that may predispose to plaque rupture (fat attenuation index and wall shear stress). We conclude with technological advances in imaging acquisition using photon counting CT and post-image processing techniques especially those that can mitigate blooming artifacts.
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Affiliation(s)
- Mahmoud Al Rifai
- Houston Methodist DeBakey Heart & Vascular Center, Houston, TX, USA
| | | | - Fares Alahdab
- Houston Methodist DeBakey Heart & Vascular Center, Houston, TX, USA
| | - Mouaz H Al-Mallah
- Houston Methodist DeBakey Heart & Vascular Center, Houston, TX, USA.
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15
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Soschynski M, Hagen F, Baumann S, Hagar MT, Weiss J, Krauss T, Schlett CL, von zur Mühlen C, Bamberg F, Nikolaou K, Greulich S, Froelich MF, Riffel P, Overhoff D, Papavassiliu T, Schoenberg SO, Faby S, Ulzheimer S, Ayx I, Krumm P. High Temporal Resolution Dual-Source Photon-Counting CT for Coronary Artery Disease: Initial Multicenter Clinical Experience. J Clin Med 2022; 11:jcm11206003. [PMID: 36294324 PMCID: PMC9604695 DOI: 10.3390/jcm11206003] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 09/29/2022] [Accepted: 10/06/2022] [Indexed: 11/16/2022] Open
Abstract
The aim of this paper is to evaluate the diagnostic image quality of spectral dual-source photon-counting detector coronary computed tomography angiography (PCD-CCTA) for coronary artery disease in a multicenter study. The image quality (IQ), assessability, contrast-to-noise ratio (CNR), Agatston score, and radiation exposure were measured. Stenoses were quantified and compared with invasive coronary angiography, if available. A total of 92 subjects (65% male, age 58 ± 14 years) were analyzed. The prevalence of significant coronary artery disease (CAD) (stenosis ≥ 50%) was 17% of all patients, the range of the Agatston score was 0−2965 (interquartile range (IQR) 0−135). The IQ was very good (one, IQR one−two), the CNR was very high (20 ± 10), and 5% of the segments were rated non-diagnostic. The IQ and assessability were higher in proximal coronary segments (p < 0.001). Agatston scores up to 600 did not significantly affect the assessability of the coronary segments (p = 0.3). Heart rate influenced assessability only at a high-pitch mode (p = 0.009). For the invasive coronary angiography (ICA) subgroup (n = nine), the diagnostic performance for CAD per segment was high (sensitivity 92%, specificity 96%), although the limited number of patients who underwent both diagnostic modalities limits the generalization of this finding at this stage. PCD-CCTA provides good image quality for low and moderate levels of coronary calcifications.
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Affiliation(s)
- Martin Soschynski
- Department of Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106 Freiburg, Germany
| | - Florian Hagen
- Department of Diagnostic and Interventional Radiology, University of Tuebingen, Hoppe-Seyler-Str. 3, 72076 Tuebingen, Germany
| | - Stefan Baumann
- First Department of Medicine-Cardiology, University Medical Centre Mannheim, and DZHK (German Centre for Cardiovascular Research), Partner Site Heidelberg/Mannheim, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
| | - Muhammad Taha Hagar
- Department of Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106 Freiburg, Germany
| | - Jakob Weiss
- Department of Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106 Freiburg, Germany
| | - Tobias Krauss
- Department of Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106 Freiburg, Germany
| | - Christopher L. Schlett
- Department of Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106 Freiburg, Germany
| | - Constantin von zur Mühlen
- Department of Cardiology and Angiology I, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106 Freiburg, Germany
| | - Fabian Bamberg
- Department of Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106 Freiburg, Germany
| | - Konstantin Nikolaou
- Department of Diagnostic and Interventional Radiology, University of Tuebingen, Hoppe-Seyler-Str. 3, 72076 Tuebingen, Germany
| | - Simon Greulich
- Department of Cardiology and Angiology, University of Tuebingen, Otfried-Müller-Str. 10, 72076 Tuebingen, Germany
| | - Matthias F. Froelich
- Department of Radiology and Nuclear Medicine, University Medical Center Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
| | - Philipp Riffel
- Department of Radiology and Nuclear Medicine, University Medical Center Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
| | - Daniel Overhoff
- Department of Radiology and Nuclear Medicine, University Medical Center Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
| | - Theano Papavassiliu
- First Department of Medicine-Cardiology, University Medical Centre Mannheim, and DZHK (German Centre for Cardiovascular Research), Partner Site Heidelberg/Mannheim, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
| | - Stefan O. Schoenberg
- Department of Radiology and Nuclear Medicine, University Medical Center Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
| | - Sebastian Faby
- Computed Tomography, Siemens Healthcare GmbH, 91301 Forchheim, Germany
| | - Stefan Ulzheimer
- Computed Tomography, Siemens Healthcare GmbH, 91301 Forchheim, Germany
| | - Isabelle Ayx
- Department of Radiology and Nuclear Medicine, University Medical Center Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
- Correspondence: ; Tel.: +49-62-1383-2067
| | - Patrick Krumm
- Department of Diagnostic and Interventional Radiology, University of Tuebingen, Hoppe-Seyler-Str. 3, 72076 Tuebingen, Germany
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16
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Emfietzoglou M, Mavrogiannis MC, Samaras A, Rampidis GP, Giannakoulas G, Kampaktsis PN. The role of cardiac computed tomography in predicting adverse coronary events. Front Cardiovasc Med 2022; 9:920119. [PMID: 35911522 PMCID: PMC9334665 DOI: 10.3389/fcvm.2022.920119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 06/28/2022] [Indexed: 11/16/2022] Open
Abstract
Cardiac computed tomography (CCT) is now considered a first-line diagnostic test for suspected coronary artery disease (CAD) providing a non-invasive, qualitative, and quantitative assessment of the coronary arteries and pericoronary regions. CCT assesses vascular calcification and coronary lumen narrowing, measures total plaque burden, identifies plaque composition and high-risk plaque features and can even assist with hemodynamic evaluation of coronary lesions. Recent research focuses on computing coronary endothelial shear stress, a potent modulator in the development and progression of atherosclerosis, as well as differentiating an inflammatory from a non-inflammatory pericoronary artery environment using the simple measurement of pericoronary fat attenuation index. In the present review, we discuss the role of the above in the diagnosis of coronary atherosclerosis and the prediction of adverse cardiovascular events. Additionally, we review the current limitations of cardiac computed tomography as an imaging modality and highlight how rapid technological advancements can boost its capacity in predicting cardiovascular risk and guiding clinical decision-making.
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Affiliation(s)
- Maria Emfietzoglou
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Michail C. Mavrogiannis
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | | | | | | | - Polydoros N. Kampaktsis
- Division of Cardiology, Columbia University Irving Medical Center, New York, NY, United States
- *Correspondence: Polydoros N. Kampaktsis
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17
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Artificial Intelligence (Enhanced Super-Resolution Generative Adversarial Network) for Calcium Deblooming in Coronary Computed Tomography Angiography: A Feasibility Study. Diagnostics (Basel) 2022; 12:diagnostics12040991. [PMID: 35454039 PMCID: PMC9027004 DOI: 10.3390/diagnostics12040991] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 04/08/2022] [Accepted: 04/13/2022] [Indexed: 12/22/2022] Open
Abstract
Background: The presence of heavy calcification in the coronary artery always presents a challenge for coronary computed tomography angiography (CCTA) in assessing the degree of coronary stenosis due to blooming artifacts associated with calcified plaques. Our study purpose was to use an advanced artificial intelligence (enhanced super-resolution generative adversarial network [ESRGAN]) model to suppress the blooming artifact in CCTA and determine its effect on improving the diagnostic performance of CCTA in calcified plaques. Methods: A total of 184 calcified plaques from 50 patients who underwent both CCTA and invasive coronary angiography (ICA) were analysed with measurements of coronary lumen on the original CCTA, and three sets of ESRGAN-processed images including ESRGAN-high-resolution (ESRGAN-HR), ESRGAN-average and ESRGAN-median with ICA as the reference method for determining sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV). Results: ESRGAN-processed images improved the specificity and PPV at all three coronary arteries (LAD-left anterior descending, LCx-left circumflex and RCA-right coronary artery) compared to original CCTA with ESRGAN-median resulting in the highest values being 41.0% (95% confidence interval [CI]: 30%, 52.7%) and 26.9% (95% CI: 22.9%, 31.4%) at LAD; 41.7% (95% CI: 22.1%, 63.4%) and 36.4% (95% CI: 28.9%, 44.5%) at LCx; 55% (95% CI: 38.5%, 70.7%) and 47.1% (95% CI: 38.7%, 55.6%) at RCA; while corresponding values for original CCTA were 21.8% (95% CI: 13.2%, 32.6%) and 22.8% (95% CI: 20.8%, 24.9%); 12.5% (95% CI: 2.6%, 32.4%) and 27.6% (95% CI: 24.7%, 30.7%); 17.5% (95% CI: 7.3%, 32.8%) and 32.7% (95% CI: 29.6%, 35.9%) at LAD, LCx and RCA, respectively. There was no significant effect on sensitivity and NPV between the original CCTA and ESRGAN-processed images at all three coronary arteries. The area under the receiver operating characteristic curve was the highest with ESRGAN-median images at the RCA level with values being 0.76 (95% CI: 0.64, 0.89), 0.81 (95% CI: 0.69, 0.93), 0.82 (95% CI: 0.71, 0.94) and 0.86 (95% CI: 0.76, 0.96) corresponding to original CCTA and ESRGAN-HR, average and median images, respectively. Conclusions: This feasibility study shows the potential value of ESRGAN-processed images in improving the diagnostic value of CCTA for patients with calcified plaques.
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18
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Kawashima H, Kogame N, Ono M, Hara H, Takahashi K, Reiber JH, Thomsen B, de Winter RJ, Tanaka K, La Meir M, de Mey J, Schneider U, Doenst T, Teichgräber U, Wijns W, Mushtaq S, Pompilio G, Bartorelli AL, Andreini D, Serruys PW, Onuma Y. Diagnostic Concordance and Discordance Between Angiography-Based Quantitative Flow Ratio and Fractional Flow Reserve Derived from Computed Tomography in Complex Coronary Artery Disease. J Cardiovasc Comput Tomogr 2022; 16:336-342. [DOI: 10.1016/j.jcct.2022.02.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 01/28/2022] [Accepted: 02/09/2022] [Indexed: 12/24/2022]
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Koons E, VanMeter P, Rajendran K, Yu L, McCollough C, Leng S. Improved quantification of coronary artery luminal stenosis in the presence of heavy calcifications using photon-counting detector CT. PROCEEDINGS OF SPIE--THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING 2022; 12031. [PMID: 35677467 DOI: 10.1117/12.2613019] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Coronary CT Angiography (cCTA) is commonly used to detect and quantify luminal stenoses in patients with coronary artery disease (CAD). However, its use is limited in patients with heavy coronary calcifications due to calcium blooming, which is caused by insufficient spatial resolution. This study evaluated the ability of a photon-counting-detector (PCD) CT in quantifying luminal stenosis in the presence of heavy calcifications relative to an energy-integrating-detector (EID) CT. Cylindrical rods of 4.5 mm diameter (with 3 mm lumen), which contained calcium hydroxyapatite (CaHA) to emulate calcifications of varying shapes and sizes and an iodine or blood analog to emulate the coronary lumen, were placed within an anthropomorphic thorax phantom and scanned at matched dose on an EID-CT and a PCD-CT scanner. Stenoses were qualitatively evaluated and quantified using commercial software. Measured percent area stenosis was compared to reference values. PCD-CT provided better visualization of calcium plaques and the patent lumen, and more accurate stenosis quantification for all plaques. In one rod (75% occlusion with ring-shaped plaque), only PCD-CT was able to determine that the vessel was not fully obstructed. The phantom results indicate luminal stenoses that were previously considered non-assessable due to the presence of heavily-calcified plaques can be assessed using PCD-CT. Clinical studies to support these conclusions are underway.
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Affiliation(s)
- Emily Koons
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | | | | | - Lifeng Yu
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | | | - Shuai Leng
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
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20
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Andreini D, Takahashi K, Mushtaq S, Conte E, Modolo R, Sonck J, De Mey J, Ravagnani P, Schoors D, Maisano F, Kaufmann P, Lindeboom W, Morel MA, Doenst T, Teichgräber U, Pontone G, Pompilio G, Bartorelli A, Onuma Y, Serruys PW. Impact of coronary calcification assessed by coronary CT angiography on treatment decision in patients with three-vessel CAD: insights from SYNTAX III trial. Interact Cardiovasc Thorac Surg 2022; 34:176-184. [PMID: 34542612 PMCID: PMC8766208 DOI: 10.1093/icvts/ivab249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 07/13/2021] [Accepted: 08/13/2021] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES The aim of this study was to determine Syntax scores based on coronary computed tomography angiography (CCTA) and invasive coronary angiography (ICA) and to assess whether heavy coronary calcification significantly limits the CCTA evaluation and the impact of severe calcification on heart team's treatment decision and procedural planning in patients with three-vessel coronary artery disease (CAD) with or without left main disease. METHODS SYNTAX III was a multicentre, international study that included patients with three-vessel CAD with or without left main disease. The heart teams were randomized to either assess coronary arteries with coronary CCTA or ICA. We stratified the patients based on the presence of at least 1 lesion with heavy calcification defined as arc of calcium >180° within the lesion using CCTA. Agreement on the anatomical SYNTAX score and treatment decision was compared between patients with and without heavy calcifications. RESULTS Overall, 222 patients with available CCTA and ICA were included in this trial subanalysis (104 with heavy calcification, 118 without heavy calcification). The mean difference in the anatomical SYNTAX score (CCTA derived-ICA derived) was lower in patients without heavy calcifications [mean (-1.96 SD; +1.96 SD) = 1.5 (-19.3; 22.4) vs 5.9 (-17.5; +29.3), P = 0.004]. The agreement on treatment decision did not differ between patients with (Cohen's kappa 0.79) or without coronary calcifications (Cohen's kappa 0.84). The agreement on the treatment planning did not differ between patients with (concordance 80.3%) or without coronary calcifications (concordance 82.8%). CONCLUSIONS An overall good correlation between CCTA- and ICA-derived Syntax score was found. The presence of heavy coronary calcification moderately influenced the agreement between CCTA and ICA on the anatomical SYNTAX score. However, agreement on the treatment decision and planning was high and irrespective of the presence of calcified lesions.
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Affiliation(s)
- Daniele Andreini
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino, IRCCS, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Kuniaki Takahashi
- Department of Cardiology, Amsterdam University Medical Center, Amsterdam, Netherlands
| | - Saima Mushtaq
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino, IRCCS, Milan, Italy
| | - Edoardo Conte
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino, IRCCS, Milan, Italy
| | - Rodrigo Modolo
- Department of Cardiology, Amsterdam University Medical Center, Amsterdam, Netherlands
- Cardiology Division, Department of Internal Medicine, Hospital de Clinicas, University of Campinas, Campinas, São Paulo, Brazil
| | - Jeroen Sonck
- Cardiovascular Center Aalst, OLV Hospital, Aalst, Belgium
| | - Johan De Mey
- Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussel, Belgium
| | - Paolo Ravagnani
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino, IRCCS, Milan, Italy
| | | | | | | | | | | | - Torsten Doenst
- Jena University Hospital, Friedrich-Schiller-University of Jena, Jena, Germany
| | - Ulf Teichgräber
- Jena University Hospital, Friedrich-Schiller-University of Jena, Jena, Germany
| | - Gianluca Pontone
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino, IRCCS, Milan, Italy
| | - Giulio Pompilio
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino, IRCCS, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Antonio Bartorelli
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino, IRCCS, Milan, Italy
- Department of Biomedical and Clinical Sciences “Luigi Sacco”, University of Milan, Milan, Italy
| | | | - Patrick W Serruys
- Department of Cardiology, Royal Brompton and Harefield Hospitals, Imperial College London, London, UK
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van den Boogert TPW, Claessen BEPM, Boekholdt SM, Leiner T, Vliegenthart R, Schuiling SF, Timmer JR, Bekkers SCAM, Voskuil M, Siebelink HJ, van Es W, Lamb HJ, Prokop M, Damman P, Stoker J, Willems HC, Henriques JP, Planken RN. The impact and challenges of implementing CTCA according to the 2019 ESC guidelines on chronic coronary syndromes: a survey and projection of CTCA services in the Netherlands. Insights Imaging 2021; 12:186. [PMID: 34921633 PMCID: PMC8684565 DOI: 10.1186/s13244-021-01122-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 11/02/2021] [Indexed: 11/10/2022] Open
Abstract
Background The 2019 ESC-guidelines on chronic coronary syndromes (ESC-CCS) recommend computed tomographic coronary angiography (CTCA) or non-invasive functional imaging instead of exercise ECG as initial test to diagnose obstructive coronary artery disease. Since impact and challenges of these guidelines are unknown, we studied the current utilisation of CTCA-services, status of CTCA-protocols and modeled the expected impact of these guidelines in the Netherlands. Methods and results A survey on current practice and CTCA utilisation was disseminated to every Dutch hospital organisation providing outpatient cardiology care and modeled the required CTCA capacity for implementation of the ESC guideline, based on these national figures and expert consensus. Survey response rate was 100% (68/68 hospital organisations). In 2019, 63 hospital organisations provided CTCA-services (93%), CTCA was performed on 99 CTCA-capable CT-scanners, and 37,283 CTCA-examinations were performed. Between the hospital organisations, we found substantial variation considering CTCA indications, CTCA equipment and acquisition and reporting standards. To fully implement the new ESC guideline, our model suggests that 70,000 additional CTCA-examinations would have to be performed in the Netherlands. Conclusions Despite high national CTCA-services coverage in the Netherlands, a substantial increase in CTCA capacity is expected to be able to implement the 2019 ESC-CCS recommendations on the use of CTCA. Furthermore, the results of this survey highlight the importance to address variations in image acquisition and to standardise the interpretation and reporting of CTCA, as well as to establish interdisciplinary collaboration and organisational alignment.
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Affiliation(s)
- T P W van den Boogert
- Heart centre, Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.,Department of Radiology and Nuclear Medicine, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.,Department of Radiology and Nuclear Medicine, Amsterdam UMC, Location AMC, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - B E P M Claessen
- Heart centre, Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.,Department of Cardiology, Noordwest Ziekenhuisgroep, Alkmaar, The Netherlands
| | - S M Boekholdt
- Heart centre, Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - T Leiner
- Department of Radiology, Utrecht University Medical centre, Utrecht, The Netherlands
| | - R Vliegenthart
- Department of Radiology, University Medical centre Groningen, Groningen, The Netherlands
| | - S F Schuiling
- Zorgevaluatie en Gepast Gebruik, Diemen, The Netherlands
| | - J R Timmer
- Departments of Cardiology, Isala, Zwolle, The Netherlands
| | - S C A M Bekkers
- Department of Cardiology, Maastricht University Medical centre, Maastricht, The Netherlands
| | - M Voskuil
- Department of Cardiology, Utrecht University Medical centre, Utrecht, The Netherlands
| | - H J Siebelink
- Department of Cardiology, Leiden University Medical centre, Leiden, The Netherlands
| | - W van Es
- Department of Radiology, St. Antonius Hospital, Nieuwegein, The Netherlands
| | - H J Lamb
- Department of Radiology, Leiden University Medical centre, Leiden, The Netherlands
| | - M Prokop
- Department of Radiology, Nuclear Medicine, and Anatomy, Radboud University Medical centre, Nijmegen, The Netherlands
| | - P Damman
- Department of Cardiology, Radboud University Medical centre, Nijmegen, The Netherlands
| | - J Stoker
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Location AMC, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.,Department of Radiology and Nuclear Medicine, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - H C Willems
- Division of Geriatrics, Department of Internal Medicine, Amsterdam UMC, Amsterdam, The Netherlands
| | - J P Henriques
- Heart centre, Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - R N Planken
- Department of Radiology and Nuclear Medicine, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands. .,Department of Radiology and Nuclear Medicine, Amsterdam UMC, Location AMC, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
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22
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Zhang L, Li L, Feng G, Fan T, Jiang H, Wang Z. Advances in CT Techniques in Vascular Calcification. Front Cardiovasc Med 2021; 8:716822. [PMID: 34660718 PMCID: PMC8511450 DOI: 10.3389/fcvm.2021.716822] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 08/30/2021] [Indexed: 12/17/2022] Open
Abstract
Vascular calcification, a common pathological phenomenon in atherosclerosis, diabetes, hypertension, and other diseases, increases the incidence and mortality of cardiovascular diseases. Therefore, the prevention and detection of vascular calcification play an important role. At present, various techniques have been applied to the analysis of vascular calcification, but clinical examination mainly depends on non-invasive and invasive imaging methods to detect and quantify. Computed tomography (CT), as a commonly used clinical examination method, can analyze vascular calcification. In recent years, with the development of technology, in addition to traditional CT, some emerging types of CT, such as dual-energy CT and micro CT, have emerged for vascular imaging and providing anatomical information for calcification. This review focuses on the latest application of various CT techniques in vascular calcification.
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Affiliation(s)
- Lijie Zhang
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Lihua Li
- Department of Pathology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Guoquan Feng
- Department of Radiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Tingpan Fan
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Han Jiang
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Zhongqun Wang
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
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23
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Sun Z, Ng CKC, Wong YH, Yeong CH. 3D-Printed Coronary Plaques to Simulate High Calcification in the Coronary Arteries for Investigation of Blooming Artifacts. Biomolecules 2021; 11:biom11091307. [PMID: 34572520 PMCID: PMC8468360 DOI: 10.3390/biom11091307] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 08/26/2021] [Accepted: 08/31/2021] [Indexed: 11/16/2022] Open
Abstract
The diagnostic value of coronary computed tomography angiography (CCTA) is significantly affected by high calcification in the coronary arteries owing to blooming artifacts limiting its accuracy in assessing the calcified plaques. This study aimed to simulate highly calcified plaques in 3D-printed coronary models. A combination of silicone + 32.8% calcium carbonate was found to produce 800 HU, representing extensive calcification. Six patient-specific coronary artery models were printed using the photosensitive polyurethane resin and a total of 22 calcified plaques with diameters ranging from 1 to 4 mm were inserted into different segments of these 3D-printed coronary models. The coronary models were scanned on a 192-slice CT scanner with 70 kV, pitch of 1.4, and slice thickness of 1 mm. Plaque attenuation was measured between 1100 and 1400 HU. Both maximum-intensity projection (MIP) and volume rendering (VR) images (wide and narrow window widths) were generated for measuring the diameters of these calcified plaques. An overestimation of plaque diameters was noticed on both MIP and VR images, with measurements on the MIP images close to those of the actual plaque sizes (<10% deviation), and a large measurement discrepancy observed on the VR images (up to 50% overestimation). This study proves the feasibility of simulating extensive calcification in coronary arteries using a 3D printing technique to develop calcified plaques and generate 3D-printed coronary models.
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Affiliation(s)
- Zhonghua Sun
- Discipline of Medical Radiation Science, Curtin Medical School, Curtin University, Perth, WA 6845, Australia;
- Curtin Health Innovation Research Institute (CHIRI), Faculty of Health Sciences, Curtin University, Perth, WA 6845, Australia
- Correspondence: ; Tel.: +61-8-9266-7509; Fax: +61-8-9266-2377
| | - Curtise Kin Cheung Ng
- Discipline of Medical Radiation Science, Curtin Medical School, Curtin University, Perth, WA 6845, Australia;
- Curtin Health Innovation Research Institute (CHIRI), Faculty of Health Sciences, Curtin University, Perth, WA 6845, Australia
| | - Yin How Wong
- Faculty of Health & Medical Sciences, School of Medicine, Taylor’s University, No. 1, Jalan Taylor’s, Subang Jaya 47500, Malaysia; (Y.H.W.); (C.H.Y.)
| | - Chai Hong Yeong
- Faculty of Health & Medical Sciences, School of Medicine, Taylor’s University, No. 1, Jalan Taylor’s, Subang Jaya 47500, Malaysia; (Y.H.W.); (C.H.Y.)
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24
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Kersten J, Eberhardt N, Prasad V, Keßler M, Markovic S, Mörike J, Nita N, Stephan T, Tadic M, Tesfay T, Rottbauer W, Buckert D. Non-invasive Imaging in Patients With Chronic Total Occlusions of the Coronary Arteries-What Does the Interventionalist Need for Success? Front Cardiovasc Med 2021; 8:713625. [PMID: 34527713 PMCID: PMC8435679 DOI: 10.3389/fcvm.2021.713625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Accepted: 08/06/2021] [Indexed: 10/26/2022] Open
Abstract
Chronic total occlusion (CTO) of coronary arteries is a common finding in patients with known or suspected coronary artery disease (CAD). Although tremendous advances have been made in the interventional treatment of CTOs over the past decade, correct patient selection remains an important parameter for achieving optimal results. Non-invasive imaging can make a valuable contribution. Ischemia and viability, two major factors in this regard, can be displayed using echocardiography, single-photon emission tomography, positron emission tomography, computed tomography, and cardiac magnetic resonance imaging. Each has its own strengths and weaknesses. Although most have been studied in patients with CAD in general, there is an increasing number of studies with positive preselectional factors for patients with CTOs. The aim of this review is to provide a structured overview of the current state of pre-interventional imaging for CTOs.
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Affiliation(s)
- Johannes Kersten
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
| | - Nina Eberhardt
- Department for Nuclear Medicine, University of Ulm, Ulm, Germany
| | - Vikas Prasad
- Department for Nuclear Medicine, University of Ulm, Ulm, Germany
| | - Mirjam Keßler
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
| | - Sinisa Markovic
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
| | - Johannes Mörike
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
| | - Nicoleta Nita
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
| | - Tilman Stephan
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
| | - Marijana Tadic
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
| | - Temsgen Tesfay
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
| | | | - Dominik Buckert
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
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25
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Shwaiki O, Rashwan B, Fink MA, Kirksey L, Gadani S, Karuppasamy K, Melzig C, Thompson D, D'Amico G, Rengier F, Partovi S. Lower extremity CT angiography in peripheral arterial disease: from the established approach to evolving technical developments. Int J Cardiovasc Imaging 2021; 37:3101-3114. [PMID: 33997924 DOI: 10.1007/s10554-021-02277-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 05/03/2021] [Indexed: 12/13/2022]
Abstract
With the advent of multidetector computed tomography (CT), CT angiography (CTA) has gained widespread popularity for noninvasive imaging of the arterial vasculature. Peripheral extremity CTA can nowadays be performed rapidly with high spatial resolution and a decreased amount of both intravenous contrast and radiation exposure. In patients with peripheral artery disease (PAD), this technique can be used to delineate the bilateral lower extremity arterial tree and to determine the amount of atherosclerotic disease while differentiating between acute and chronic changes. This article provides an overview of several imaging techniques for PAD, specifically discusses the use of peripheral extremity CTA in patients with PAD, clinical indications, established technical considerations and novel technical developments, and the effect of postprocessing imaging techniques and structured reporting.
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Affiliation(s)
- Omar Shwaiki
- Department of Interventional Radiology, Cleveland Clinic Main Campus, Cleveland, OH, USA
| | - Basem Rashwan
- Department of Interventional Radiology, Cleveland Clinic Main Campus, Cleveland, OH, USA
| | - Matthias A Fink
- Section of Emergency Radiology, Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - Levester Kirksey
- Department of Vascular Surgery, Cleveland Clinic Main Campus, Cleveland, OH, USA
| | - Sameer Gadani
- Department of Interventional Radiology, Cleveland Clinic Main Campus, Cleveland, OH, USA
| | | | - Claudius Melzig
- Section of Emergency Radiology, Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - Dustin Thompson
- Department of Interventional Radiology, Cleveland Clinic Main Campus, Cleveland, OH, USA
| | - Giuseppe D'Amico
- Department of Transplant Surgery, Cleveland Clinic Main Campus, Cleveland, OH, USA
| | - Fabian Rengier
- Section of Emergency Radiology, Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - Sasan Partovi
- Department of Interventional Radiology, Cleveland Clinic Main Campus, Cleveland, OH, USA.
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26
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Liu H, Wingert A, Wang J, Zhang J, Wang X, Sun J, Chen F, Khalid SG, Jiang J, Zheng D. Extraction of Coronary Atherosclerotic Plaques From Computed Tomography Imaging: A Review of Recent Methods. Front Cardiovasc Med 2021; 8:597568. [PMID: 33644127 PMCID: PMC7903898 DOI: 10.3389/fcvm.2021.597568] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 01/18/2021] [Indexed: 12/21/2022] Open
Abstract
Background: Atherosclerotic plaques are the major cause of coronary artery disease (CAD). Currently, computed tomography (CT) is the most commonly applied imaging technique in the diagnosis of CAD. However, the accurate extraction of coronary plaque geometry from CT images is still challenging. Summary of Review: In this review, we focused on the methods in recent studies on the CT-based coronary plaque extraction. According to the dimension of plaque extraction method, the studies were categorized into two-dimensional (2D) and three-dimensional (3D) ones. In each category, the studies were analyzed in terms of data, methods, and evaluation. We summarized the merits and limitations of current methods, as well as the future directions for efficient and accurate extraction of coronary plaques using CT imaging. Conclusion: The methodological innovations are important for more accurate CT-based assessment of coronary plaques in clinical applications. The large-scale studies, de-blooming algorithms, more standardized datasets, and more detailed classification of non-calcified plaques could improve the accuracy of coronary plaque extraction from CT images. More multidimensional geometric parameters can be derived from the 3D geometry of coronary plaques. Additionally, machine learning and automatic 3D reconstruction could improve the efficiency of coronary plaque extraction in future studies.
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Affiliation(s)
- Haipeng Liu
- Research Centre for Intelligent Healthcare, Coventry University, Coventry, United Kingdom.,Faculty of Health, Education, Medicine, and Social Care, Anglia Ruskin University, Chelmsford, United Kingdom
| | - Aleksandra Wingert
- Faculty of Health, Education, Medicine, and Social Care, Anglia Ruskin University, Chelmsford, United Kingdom
| | - Jian'an Wang
- Department of Cardiology, School of Medicine, The Second Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Jucheng Zhang
- Department of Clinical Engineering, School of Medicine, The Second Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Xinhong Wang
- Department of Radiology, School of Medicine, The Second Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Jianzhong Sun
- Department of Radiology, School of Medicine, The Second Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Fei Chen
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Syed Ghufran Khalid
- Research Centre for Intelligent Healthcare, Coventry University, Coventry, United Kingdom
| | - Jun Jiang
- Department of Cardiology, School of Medicine, The Second Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Dingchang Zheng
- Research Centre for Intelligent Healthcare, Coventry University, Coventry, United Kingdom
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27
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Eslami P, Thondapu V, Karady J, Hartman EMJ, Jin Z, Albaghdadi M, Lu M, Wentzel JJ, Hoffmann U. Physiology and coronary artery disease: emerging insights from computed tomography imaging based computational modeling. Int J Cardiovasc Imaging 2020; 36:2319-2333. [PMID: 32779078 PMCID: PMC8323761 DOI: 10.1007/s10554-020-01954-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 07/23/2020] [Indexed: 12/15/2022]
Abstract
Improvements in spatial and temporal resolution now permit robust high quality characterization of presence, morphology and composition of coronary atherosclerosis in computed tomography (CT). These characteristics include high risk features such as large plaque volume, low CT attenuation, napkin-ring sign, spotty calcification and positive remodeling. Because of the high image quality, principles of patient-specific computational fluid dynamics modeling of blood flow through the coronary arteries can now be applied to CT and allow the calculation of local lesion-specific hemodynamics such as endothelial shear stress, fractional flow reserve and axial plaque stress. This review examines recent advances in coronary CT image-based computational modeling and discusses the opportunity to identify lesions at risk for rupture much earlier than today through the combination of anatomic and hemodynamic information.
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Affiliation(s)
- Parastou Eslami
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
| | - Vikas Thondapu
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Julia Karady
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Eline M J Hartman
- Department of Cardiology, Biomedical Engineering, Erasmus MC, Rotterdam, The Netherlands
| | - Zexi Jin
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Mazen Albaghdadi
- Department of Cardiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Michael Lu
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Jolanda J Wentzel
- Department of Cardiology, Biomedical Engineering, Erasmus MC, Rotterdam, The Netherlands
| | - Udo Hoffmann
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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28
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Monizzi G, Sonck J, Nagumo S, Buytaert D, Van Hoe L, Grancini L, Bartorelli AL, Vanhoenacker P, Simons P, Bladt O, Wyffels E, De Bruyne B, Andreini D, Collet C. Quantification of calcium burden by coronary CT angiography compared to optical coherence tomography. Int J Cardiovasc Imaging 2020; 36:2393-2402. [DOI: 10.1007/s10554-020-01839-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 04/03/2020] [Indexed: 12/26/2022]
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29
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Abdelrahman KM, Chen MY, Dey AK, Virmani R, Finn AV, Khamis RY, Choi AD, Min JK, Williams MC, Buckler AJ, Taylor CA, Rogers C, Samady H, Antoniades C, Shaw LJ, Budoff MJ, Hoffmann U, Blankstein R, Narula J, Mehta NN. Coronary Computed Tomography Angiography From Clinical Uses to Emerging Technologies: JACC State-of-the-Art Review. J Am Coll Cardiol 2020; 76:1226-1243. [PMID: 32883417 PMCID: PMC7480405 DOI: 10.1016/j.jacc.2020.06.076] [Citation(s) in RCA: 130] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 05/08/2020] [Accepted: 06/10/2020] [Indexed: 12/14/2022]
Abstract
Evaluation of coronary artery disease (CAD) using coronary computed tomography angiography (CCTA) has seen a paradigm shift in the last decade. Evidence increasingly supports the clinical utility of CCTA across various stages of CAD, from the detection of early subclinical disease to the assessment of acute chest pain. Additionally, CCTA can be used to noninvasively quantify plaque burden and identify high-risk plaque, aiding in diagnosis, prognosis, and treatment. This is especially important in the evaluation of CAD in immune-driven conditions with increased cardiovascular disease prevalence. Emerging applications of CCTA based on hemodynamic indices and plaque characterization may provide personalized risk assessment, affect disease detection, and further guide therapy. This review provides an update on the evidence, clinical applications, and emerging technologies surrounding CCTA as highlighted at the 2019 National Heart, Lung and Blood Institute CCTA Summit.
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Affiliation(s)
- Khaled M Abdelrahman
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland
| | - Marcus Y Chen
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland
| | - Amit K Dey
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland
| | - Renu Virmani
- Department of Pathology, CVPath Institute, Gaithersburg, Maryland
| | - Aloke V Finn
- Department of Pathology, CVPath Institute, Gaithersburg, Maryland
| | - Ramzi Y Khamis
- Vascular Sciences Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Andrew D Choi
- Division of Cardiology and Department of Radiology, The George Washington University School of Medicine, Washington, DC
| | - James K Min
- Department of Radiology, New York-Presbyterian Hospital and Weill Cornell Medicine, New York, New York
| | - Michelle C Williams
- British Heart Foundation Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, United Kingdom; Edinburgh Imaging, Queen's Medical Research Institute University of Edinburgh, Edinburgh, United Kingdom
| | | | | | | | - Habib Samady
- Division of Cardiology, Emory University School of Medicine, Atlanta, Georgia
| | - Charalambos Antoniades
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Leslee J Shaw
- Department of Radiology, New York-Presbyterian Hospital and Weill Cornell Medicine, New York, New York
| | - Matthew J Budoff
- Lundquist Institute at Harbor-UCLA Medical Center, Torrance, California
| | - Udo Hoffmann
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Ron Blankstein
- Departments of Medicine (Cardiovascular Division) and Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Jagat Narula
- Zena and Michael A. Wiener Cardiovascular Institute, Marie-Josée and Henry R. Kravis Center for Cardiovascular Health Icahn School of Medicine at Mount Sinai, Mount Sinai Heart, New York, New York
| | - Nehal N Mehta
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland.
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30
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Sommer KN, Shepard LM, Mitsouras D, Iyer V, Angel E, Wilson MF, Rybicki FJ, Kumamaru KK, Sharma UC, Reddy A, Fujimoto S, Ionita CN. Patient-specific 3D-printed coronary models based on coronary computed tomography angiography volumes to investigate flow conditions in coronary artery disease. Biomed Phys Eng Express 2020; 6:045007. [PMID: 33444268 DOI: 10.1088/2057-1976/ab8f6e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND 3D printed patient-specific coronary models have the ability to enable repeatable benchtop experiments under controlled blood flow conditions. This approach can be applied to CT-derived patient geometries to emulate coronary flow and related parameters such as Fractional Flow Reserve (FFR). METHODS This study uses 3D printing to compare such benchtop FFR results with a non-invasive CT-FFR research software algorithm and catheter based invasive FFR (I-FFR) measurements. Fifty-two patients with a clinical indication for I-FFR underwent a research Coronary CT Angiography (CCTA) prior to catheterization. CT images were used to measure CT-FFR and to generate patient-specific 3D printed models of the aortic root and three main coronary arteries. Each patient-specific model was connected to a programmable pulsatile pump and benchtop FFR (B-FFR) was derived from pressures measured proximal and distal to coronary stenosis using pressure transducers. B-FFR was measured for two coronary outflow rates ('normal', 250 ml min-1; and 'hyperemic', 500 ml min-1) by adjusting the model's distal coronary resistance. RESULTS Pearson correlations and ROC AUC were calculated using invasive I-FFR as reference. The Pearson correlation factor of CT-FFR and B-FFR-500 was 0.75 and 0.71, respectively. Areas under the ROCs for CT-FFR and B-FFR-500 were 0.80 (95%CI: 0.70-0.87) and 0.81 (95%CI: 0.64-0.91) respectively. CONCLUSION Benchtop flow simulations with 3D printed models provide the capability to measure pressure changes at any location in the model, for ultimately emulating the FFR at several simulated physiological blood flow conditions. CLINICAL TRIAL REGISTRATION https://clinicaltrials.gov/show/NCT03149042.
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Affiliation(s)
- Kelsey N Sommer
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY 14228, United States of America. Canon Stroke and Vascular Research Center, University at Buffalo, Buffalo, NY, United States of America
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31
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Canan A, Ranganath P, Goerne H, Abbara S, Landeras L, Rajiah P. CAD-RADS: Pushing the Limits. Radiographics 2020; 40:629-652. [PMID: 32281902 DOI: 10.1148/rg.2020190164] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Coronary CT angiography is now established as the first-line diagnostic imaging test to exclude coronary artery disease (CAD) in the population at low to intermediate risk. Wide variability exists in both the reporting of coronary CT angiography and the interpretation of these reports by referring physicians. The CAD Reporting and Data System (CAD-RADS) is sponsored by multiple societies and is a collaborative effort to provide standard classification of CAD, which is then integrated into patient clinical care. The main goals of the CAD-RADS are to decrease variability among readers; enhance communication between interpreting and referring clinicians, allowing collaborative determination of the best course of patient care; and generate consistent data for auditing, data mining, quality improvement, research, and education. There are several scenarios in which the CAD-RADS guidelines are ambiguous or do not provide definite recommendations for further management of CAD. The authors discuss the CAD-RADS categories and modifiers, highlight a variety of complex or ambiguous scenarios, and provide recommendations for managing these scenarios. Online supplemental material is available for this article. ©RSNA, 2020 See discussion on this article by Aviram and Wolak.
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Affiliation(s)
- Arzu Canan
- From the Department of Radiology, Division of Cardiothoracic Imaging, UT Southwestern Medical Center, Dallas, Tex (A.C., P. Ranganath, H.G., S.A., P. Rajiah); Imaging and Diagnosis Center, Guadalajara, Mexico (H.G.); and Department of Radiology, University of Chicago Medical Center, Chicago, Ill (L.L.)
| | - Praveen Ranganath
- From the Department of Radiology, Division of Cardiothoracic Imaging, UT Southwestern Medical Center, Dallas, Tex (A.C., P. Ranganath, H.G., S.A., P. Rajiah); Imaging and Diagnosis Center, Guadalajara, Mexico (H.G.); and Department of Radiology, University of Chicago Medical Center, Chicago, Ill (L.L.)
| | - Harold Goerne
- From the Department of Radiology, Division of Cardiothoracic Imaging, UT Southwestern Medical Center, Dallas, Tex (A.C., P. Ranganath, H.G., S.A., P. Rajiah); Imaging and Diagnosis Center, Guadalajara, Mexico (H.G.); and Department of Radiology, University of Chicago Medical Center, Chicago, Ill (L.L.)
| | - Suhny Abbara
- From the Department of Radiology, Division of Cardiothoracic Imaging, UT Southwestern Medical Center, Dallas, Tex (A.C., P. Ranganath, H.G., S.A., P. Rajiah); Imaging and Diagnosis Center, Guadalajara, Mexico (H.G.); and Department of Radiology, University of Chicago Medical Center, Chicago, Ill (L.L.)
| | - Luis Landeras
- From the Department of Radiology, Division of Cardiothoracic Imaging, UT Southwestern Medical Center, Dallas, Tex (A.C., P. Ranganath, H.G., S.A., P. Rajiah); Imaging and Diagnosis Center, Guadalajara, Mexico (H.G.); and Department of Radiology, University of Chicago Medical Center, Chicago, Ill (L.L.)
| | - Prabhakar Rajiah
- From the Department of Radiology, Division of Cardiothoracic Imaging, UT Southwestern Medical Center, Dallas, Tex (A.C., P. Ranganath, H.G., S.A., P. Rajiah); Imaging and Diagnosis Center, Guadalajara, Mexico (H.G.); and Department of Radiology, University of Chicago Medical Center, Chicago, Ill (L.L.)
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Sun Z. Use of Three-dimensional Printing in the Development of Optimal Cardiac CT Scanning Protocols. Curr Med Imaging 2020; 16:967-977. [PMID: 32107994 DOI: 10.2174/1573405616666200124124140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 11/22/2019] [Accepted: 11/27/2019] [Indexed: 01/01/2023]
Abstract
Three-dimensional (3D) printing is increasingly used in medical applications with most of the studies focusing on its applications in medical education and training, pre-surgical planning and simulation, and doctor-patient communication. An emerging area of utilising 3D printed models lies in the development of cardiac computed tomography (CT) protocols for visualisation and detection of cardiovascular disease. Specifically, 3D printed heart and cardiovascular models have shown potential value in the evaluation of coronary plaques and coronary stents, aortic diseases and detection of pulmonary embolism. This review article provides an overview of the clinical value of 3D printed models in these areas with regard to the development of optimal CT scanning protocols for both diagnostic evaluation of cardiovascular disease and reduction of radiation dose. The expected outcomes are to encourage further research towards this direction.
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Affiliation(s)
- Zhonghua Sun
- Discipline of Medical Radiation Sciences, School of Molecular and Life Sciences, Curtin University, Perth, Western Australia, 6845, Australia
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Miller RJH, Eisenberg E, Friedman J, Cheng V, Hayes S, Tamarappoo B, Thomson L, Berman DS. Impact of heart rate on coronary computed tomographic angiography interpretability with a third-generation dual-source scanner. Int J Cardiol 2019; 295:42-47. [PMID: 31427117 DOI: 10.1016/j.ijcard.2019.07.098] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/20/2019] [Accepted: 07/31/2019] [Indexed: 01/20/2023]
Abstract
BACKGROUND Guidelines suggest coronary computed tomography angiography (CCTA) should be performed with a heart rate (HR) below 60. Third-generation dual-source CT (DSCT) scanners, with improved temporal resolution, and end-systolic acquisition may facilitate imaging at higher HRs. We determined the influence of HR and end-systolic acquisition on image interpretability and quality with a third-generation DSCT. METHODS Patients who underwent CCTA between July 2017 and December 2018 were retrospectively identified. All images were acquired using a SOMATOM Force scanner (Siemens Healthcare). The primary outcome was the presence of any uninterpretable coronary segment. The association between HR and CCTA with uninterpretable segments was assessed with multivariable logistic regression, correcting for demographics and imaging variables. RESULTS In total, 2620 patients were included, mean age 61.4 ± 12.9 years and 61.2% male, with uninterpretable segments present in 229 (8.7%) scans. In multivariable analysis, HR 80-89 was associated with an increased likelihood of having a scan with uninterpretable segments (adjusted odds ratio [OR] 4.53, p < 0.001). However, no significant association was present with end-systolic acquisition (HR 80-89, adjusted OR 2.32, p = 0.125). HR ≥ 90 was associated with a decreased likelihood of good or excellent image quality (adjusted OR 0.26, 95% CI 0.11-0.63, p = 0.003). CONCLUSIONS With third-generation dual-source CT scanners, patients with HR 60-80 can be imaged without impacting image interpretability. End-systolic image acquisition facilitates imaging at HRs > 80 without increasing non-diagnostic scans. Routine use of systolic gating could omit the need for strict HR control and pre-test beta blockade currently required for CCTA.
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Affiliation(s)
- Robert J H Miller
- Department of Imaging, Medicine, and Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Evann Eisenberg
- Department of Imaging, Medicine, and Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - John Friedman
- Department of Imaging, Medicine, and Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Victor Cheng
- Department of Cardiac Imaging, Oklahoma Heart Institute, Tulsa, OK, United States
| | - Sean Hayes
- Department of Imaging, Medicine, and Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Balaji Tamarappoo
- Department of Imaging, Medicine, and Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Louise Thomson
- Department of Imaging, Medicine, and Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Daniel S Berman
- Department of Imaging, Medicine, and Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, United States.
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Guo W, Tripathi P, Yang S, Qian J, Rai B, Zeng M. Modified Subtraction Coronary CT Angiography with a Two-Breathhold Technique: Image Quality and Diagnostic Accuracy in Patients with Coronary Calcifications. Korean J Radiol 2019; 20:1146-1155. [PMID: 31270978 PMCID: PMC6609439 DOI: 10.3348/kjr.2018.0845] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 03/20/2019] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To evaluate a modified subtraction coronary computed tomography angiography (CCTA) technique with a two-breathhold approach in terms of image quality and stenosis grading of calcified coronary segments and in the detection of significant coronary stenosis in segments with severe calcification. MATERIALS AND METHODS The institutional board approved this study, and all subjects provided written consent. A total of 128 patients were recruited into this trial, of which 32 underwent subtraction CCTA scans and invasive coronary angiography (ICA). The average Agatston score was 356 ± 145. In severely calcified coronary segments, the presence of significant (> 50%) stenosis was assessed on both conventional CCTA and subtraction CCTA images, and the results were finally compared with ICA findings as the gold standard. RESULTS For severely calcified segments, the image quality in conventional CCTA significantly improved from 2.51 ± 0.98 to 3.12 ± 0.94 in subtraction CCTA (p < 0.001). In target segments, specificity (70% vs. 87%; p = 0.005) and positive predictive value (61% vs. 79%, p < 0.01) were improved using subtraction CCTA in comparison with conventional CCTA, with no loss in the negative predictive value. The segment-based diagnostic accuracy for detecting significant stenosis was significantly better in subtraction CCTA than in conventional CCTA (area under the receiver operating characteristic curve, 0.94 vs. 0.85; p = 0.03). CONCLUSION This modified subtraction CCTA method showed lower misregistration and better image quality in patients with limited breathhold capability. In comparison with conventional CCTA, modified subtraction CCTA would allow stenosis regrading and improve the diagnostic accuracy in coronary segments with severe calcification.
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Affiliation(s)
- Weifeng Guo
- Department of Radiology, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Institute of Medical Imaging, Shanghai, China
| | - Pratik Tripathi
- Department of Radiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Shan Yang
- Department of Radiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Juying Qian
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Bimal Rai
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mengsu Zeng
- Department of Radiology, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Institute of Medical Imaging, Shanghai, China.
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Sun Z, Ng CKC, Squelch A. Synchrotron radiation computed tomography assessment of calcified plaques and coronary stenosis with different slice thicknesses and beam energies on 3D printed coronary models. Quant Imaging Med Surg 2019; 9:6-22. [PMID: 30788242 DOI: 10.21037/qims.2018.09.11] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Background To investigate the effect of different slice thicknesses and beam energies on the visualization and assessment of coronary artery stenosis caused by calcified plaques using synchrotron radiation computed tomography (CT) based on 3D printed coronary artery models. Methods Patient-specific 3D coronary models were created based on 3 sample coronary CT angiographic cases with calcified plaques in the left coronary arteries. In addition to the original significant coronary stenosis (>70%) shown on these CT images, stenoses of <50% and >90% were created in the segmented coronary models for simulation of different degrees of stenosis. The coronary lumen and calcification were printed with soft and rigid materials to simulate properties of coronary wall and calcified plaque, respectively. The models were scanned with synchrotron radiation CT with beam energies of 30, 40 and 50 keV and spatial resolution of 0.019×0.019×0.019 mm3 voxel size. Original high-resolution images were reconstructed with slice thicknesses of 0.095, 0.208, 0.302 and 0.491 mm to determine the effect of spatial resolution on plaque and coronary stenosis assessment based on 2D axial and 3D virtual intravascular endoscopy (VIE) images. Results Three coronary artery models were successfully printed with plaques placed in the coronary arteries to simulate different degrees of stenosis. 2D and 3D VIE images reconstructed with slice thicknesses of 0.095, 0.208 and 0.302 mm allowed for accurate assessment of coronary plaques and lumen stenosis with no significant differences (P>0.05). Synchrotron radiation CT images reconstructed with a slice thickness of 0.491 mm resulted in overestimation of coronary stenosis when compared to other images on 2D and 3D VIE views (<50% vs. 55-72%; 70-79% vs. 80-90%) with significant differences (P<0.05). Similarly, irregular plaque appearances were observed on 2D and 3D VIE images with a slice thickness of 0.491 mm when compared to others using thin slice thicknesses. The scanning protocol with beam energy of 30 keV provided optimal visualization of coronary lumen and plaque appearances. Conclusions This study shows the feasibility of using 3D printed coronary artery models to simulate calcifications and different degrees of coronary stenosis. High resolution synchrotron radiation CT imaging with the 30 keV beam energy enables accurate assessment of coronary stenosis in the presence of calcification, thus highlighting the importance of high spatial resolution in the diagnosis of calcified coronary plaques.
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Affiliation(s)
- Zhonghua Sun
- Discipline of Medical Radiation Sciences, School of Molecular and Life Sciences, Curtin University, Perth, Western Australia, Australia
| | - Curtise K C Ng
- Discipline of Medical Radiation Sciences, School of Molecular and Life Sciences, Curtin University, Perth, Western Australia, Australia
| | - Andrew Squelch
- Discipline of Exploration Geophysics, Western Australian School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, Western Australia, Australia.,Computational Image Analysis Group, Curtin Institute for Computation, Curtin University, Perth, Western Australia, Australia
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