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Singla S, LeVea CM, Pokuri VK, Attwood KM, Wach MM, Tomaszewski GM, Kuvshinoff B, Iyer R. Ki67 score as a potential predictor in the selection of liver-directed therapies for metastatic neuroendocrine tumors: a single institutional experience. J Gastrointest Oncol 2016; 7:441-8. [PMID: 27284478 DOI: 10.21037/jgo.2016.02.02] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Neuroendocrine tumors (NETs) metastatic to the liver are treated with transarterial radioembolization (TARE) using yttrium-90 (Y-90) microspheres or transarterial chemoembolization (TACE). However the criteria for patient selection are not well defined. We sought to determine if Ki67 score could help select patients for one therapy over the other in the management of hepatic neuroendocrine metastases. METHODS Single institution analysis of patients treated with Y-90 or TACE between 2001 and 2014. Pathologists blinded to clinical information performed Ki67 staining. Data were analyzed using multivariate association for survival outcomes. RESULTS Amongst 72 patients (male: 39, female: 33, median age: 57 years) with metastatic NET, the most common site of origin was small bowel (n=35, 49%), while pancreas constituted 32% (n=23). Forty-four patients were treated with Y-90 (61%) and 28 patients received TACE (39%). Ki67 score was available in 28 patients (64%) treated with Y-90 and 16 patients (57%) with TACE. Within Y-90 group, there was greater use of Sandostatin (95% vs. 75%, P=0.02) and less number of total treatments completed (89% vs. 46%, P<0.001). There was no significant difference in overall survival (OS) between Y-90 and TACE when used without selection (median, 69 vs. 82 months, P=0.47). When adjusted for Ki67, patients with Ki67 score ≥3% had better OS with Y-90 compared to TACE (HR, 0.1; CI, 0.01-0.9), however for Ki67 <3%, OS was better when treated with TACE compared to Y-90 (HR, 13.5; CI, 1.22-148.87). CONCLUSIONS There is significant interaction between Ki-67 score and liver-directed treatment benefit in patients with hepatic neuroendocrine metastases. Ki-67 score ≥3% predicts greater benefit with Y-90 and a Ki-67 score <3% predicts greater benefit with TACE.
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Affiliation(s)
- Smit Singla
- 1 Department of Surgical Oncology, 2 Department of Pathology, 3 Department of Medical Oncology, 4 Department of Biostatistics and Bioinformatics, 5 Department of Interventional Radiology, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Charles M LeVea
- 1 Department of Surgical Oncology, 2 Department of Pathology, 3 Department of Medical Oncology, 4 Department of Biostatistics and Bioinformatics, 5 Department of Interventional Radiology, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Venkata K Pokuri
- 1 Department of Surgical Oncology, 2 Department of Pathology, 3 Department of Medical Oncology, 4 Department of Biostatistics and Bioinformatics, 5 Department of Interventional Radiology, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Kristopher M Attwood
- 1 Department of Surgical Oncology, 2 Department of Pathology, 3 Department of Medical Oncology, 4 Department of Biostatistics and Bioinformatics, 5 Department of Interventional Radiology, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Michael M Wach
- 1 Department of Surgical Oncology, 2 Department of Pathology, 3 Department of Medical Oncology, 4 Department of Biostatistics and Bioinformatics, 5 Department of Interventional Radiology, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Garin M Tomaszewski
- 1 Department of Surgical Oncology, 2 Department of Pathology, 3 Department of Medical Oncology, 4 Department of Biostatistics and Bioinformatics, 5 Department of Interventional Radiology, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Boris Kuvshinoff
- 1 Department of Surgical Oncology, 2 Department of Pathology, 3 Department of Medical Oncology, 4 Department of Biostatistics and Bioinformatics, 5 Department of Interventional Radiology, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Renuka Iyer
- 1 Department of Surgical Oncology, 2 Department of Pathology, 3 Department of Medical Oncology, 4 Department of Biostatistics and Bioinformatics, 5 Department of Interventional Radiology, Roswell Park Cancer Institute, Buffalo, New York, USA
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Diffusion-weighted magnetic resonance imaging predicts survival in patients with liver-predominant metastatic colorectal cancer shortly after selective internal radiation therapy. Eur Radiol 2016; 27:966-975. [DOI: 10.1007/s00330-016-4430-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 03/15/2016] [Accepted: 05/20/2016] [Indexed: 12/14/2022]
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Ronellenfitsch U, Henzler T, Menge F, Dimitrakopoulou-Strauss A, Hohenberger P. [Advanced gastrointestinal stromal tumors : What role does surgery currently play in multimodal concepts?]. Chirurg 2016; 87:389-97. [PMID: 27080051 DOI: 10.1007/s00104-016-0180-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND Gastrointestinal stromal tumors (GIST) have an incidence of 1-2/100,000 and thus constitute the most common mesenchymal neoplasm of the digestive tract. Their specific tumor biology with mutations in the protooncogenes c-KIT and PDGFR α acting as drivers of tumor growth facilitate targeted therapy with tyrosine kinase inhibitors. In this context, there are several specific indications for surgery in patients with advanced GIST. OBJECTIVE This article discusses the importance of surgery within multimodal therapeutic concepts for advanced GIST. MATERIAL AND METHODS The results of a selective literature search including own studies and case reports are presented. RESULTS For large GIST at unfavorable anatomical locations, which are not amenable to organ-sparing resection, neoadjuvant imatinib therapy is the standard upfront treatment prior to surgery in the case of imatinib-sensitive mutations in the c-KIT protooncogene. This usually reduces the extent of resection without increasing perioperative morbidity. In the metastatic setting, surgery can constitute a significant part of multimodal therapy in patients with a generalized response to drug therapy by resection of residual tumor masses, although there are no prospective studies to prove a beneficial effect on overall survival. In patients with focal progression on anti-proliferative therapy, local therapeutic measures can make an important contribution to multimodal tumor control. In patients with generalized progression, an operation should only be performed in highly selected cases with the goal of symptom control. Local ablative therapies, such as radiofrequency ablation (RFA), irreversible electroporation (IRE) and selective internal radiotherapy (SIRT) are a therapeutic option particularly for liver metastases. CONCLUSION Surgery plays an important role in the multimodal therapy of advanced GIST particularly in the neoadjuvant setting. Its role is more limited in metastatic stages where systemic treatment represents the frontline therapeutic approach.
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Affiliation(s)
- U Ronellenfitsch
- Sektion Spezielle Chirurgische Onkologie und Thoraxchirurgie, Chirurgische Klinik, Universitätsmedizin Mannheim, Theodor-Kutzer-Ufer 1-3, 68135, Mannheim, Deutschland
| | - T Henzler
- Institut für Klinische Radiologie und Nuklearmedizin, Universitätsmedizin Mannheim, Mannheim, Deutschland
| | - F Menge
- Sektion Spezielle Chirurgische Onkologie und Thoraxchirurgie, Chirurgische Klinik, Universitätsmedizin Mannheim, Theodor-Kutzer-Ufer 1-3, 68135, Mannheim, Deutschland
| | - A Dimitrakopoulou-Strauss
- Klinische Kooperationseinheit Nuklearmedizin, Deutsches Krebsforschungszentrum (DKFZ) Heidelberg, Heidelberg, Deutschland
| | - P Hohenberger
- Sektion Spezielle Chirurgische Onkologie und Thoraxchirurgie, Chirurgische Klinik, Universitätsmedizin Mannheim, Theodor-Kutzer-Ufer 1-3, 68135, Mannheim, Deutschland.
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Robust evidence for long-term survival with 90Y radioembolization in chemorefractory liver-predominant metastatic colorectal cancer. Eur Radiol 2016; 27:113-119. [PMID: 27059858 DOI: 10.1007/s00330-016-4345-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2015] [Revised: 02/14/2016] [Accepted: 03/21/2016] [Indexed: 12/16/2022]
Abstract
OBJECTIVES Our aim was to provide further evidence for the efficacy/safety of radioembolization using yttrium-90-resin microspheres for unresectable chemorefractory liver metastases from colorectal cancer (mCRC). METHODS We followed 104 consecutively treated patients until death. Overall survival (OS) was calculated from the day of the first radioembolization procedure. Response was defined by changes in tumour volume as defined by Response Evaluation Criteria in Solid Tumours (RECIST) v1.0 and/or a ≥30 % reduction in serum carcinoembryonic antigen (CEA) at 3 months. RESULTS Survival varied between 23 months in patients who had a complete response to prior chemotherapy and 13 months in patients with a partial response or stable disease. Median OS also significantly improved (from 5.8 months to 17.1 months) if response durability to radioembolization extended beyond 6 months. Patients with a positive trend in CEA serum levels (≥30 % reduction) at 3 months post-radioembolization also had a survival advantage compared with those who did not: 15.0 vs 6.7 months. Radioembolization was well tolerated. Grade 3 increases in bilirubin were reported in 5.0 % of patients at 3 months postprocedure. CONCLUSIONS After multiple chemotherapies, many patients still have a good performance status and are eligible for radioembolization. This single procedure can achieve meaningful survivals and is generally well tolerated. KEY POINTS • After multiple chemotherapies, many patients are still eligible for radioembolization (RE). • RE can achieve meaningful survival in patients with chemorefractory liver-predominant metastatic colorectal cancer (mCRC). • Tumour responsiveness to prior systemic treatments is a significant determinant of overall survival (OS) after RE. • Radioembolization in patients with a good performance status is generally well tolerated.
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Evaluation and management of pancreatic lesions in patients with von Hippel–Lindau disease. Nat Rev Clin Oncol 2016; 13:537-49. [DOI: 10.1038/nrclinonc.2016.37] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Roshan HR, Mahmoudian B, Gharepapagh E, Azarm A, Pirayesh Islamian J. Collimator and energy window optimization for ⁹⁰Y bremsstrahlung SPECT imaging: A SIMIND Monte Carlo study. Appl Radiat Isot 2016; 108:124-128. [PMID: 26720261 DOI: 10.1016/j.apradiso.2015.12.041] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 11/19/2015] [Accepted: 12/14/2015] [Indexed: 11/25/2022]
Abstract
Treatment efficacy of radioembolization using Yttrium-90 ((90)Y) microspheres is assessed by the (90)Y bremsstrahlung single photon emission computed tomography (SPECT) imaging following radioembolization. The radioisotopic image has the potential of providing reliable activity map of (90)Y microspheres distribution. One of the main reasons of the poor image quality in (90)Y bremsstrahlung SPECT imaging is the continuous and broad energy spectrum of the related bremsstrahlung photons. Furthermore, collimator geometry plays an impressive role in the spatial resolution, sensitivity and image contrast. Due to the relatively poor quality of the (90)Y bremsstrahlung SPECT images, we intend to optimize the medium-energy (ME) parallel-hole collimator and energy window. The Siemens e.cam gamma camera equipped with a ME collimator and a voxelized phantom was simulated by the SImulating Medical Imaging Nuclear Detectors (SIMIND) program. We used the SIMIND Monte Carlo program to generate the (90)Y bremsstrahlung SPECT projection of the digital Jaszczak phantom. The phantom consist of the six hot spheres ranging from 9.5 to 31.8mm in diameter, which are used to evaluate the image contrast. In order to assess the effect of the energy window on the image contrast, three energy windows ranging from 60 to 160 KeV, 160 to 400 KeV, and 60 to 400 KeV were set on a (90)Y bremsstrahlung spectrum. As well, the effect of the hole diameter of a ME collimator on the image contrast and bremsstrahlung spectrum were investigated. For the fixed collimator and septa thickness values (3.28 cm and 1.14 mm, respectively), a hole diameter range (2.35-3.3mm) was chosen based on the appropriate balance between the spatial resolution and sensitivity. The optimal energy window for (90)Y bremsstrahlung SPECT imaging was extended energy window from 60 to 400 KeV. Besides, The optimal value of the hole diameter of ME collimator was obtained 3.3mm. Geometry of the ME parallel-hole collimator and energy window are indeed important indicators of the image quality in (90)Y bremsstrahlung imaging. The obtained optimal ME collimator and optimal energy window have the potential to improve the image contrast of (90)Y bremsstrahlung images. Subsequently, high quality (90)Y bremsstrahlung images can provide reliable estimate of the (90)Y microsphere activity distribution after radioembolization.
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Affiliation(s)
- Hoda Rezaei Roshan
- Department of Medical Physics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Babak Mahmoudian
- Department of Radiology, Radiotherapy and Nuclear Medicine, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Esmaeil Gharepapagh
- Department of Radiology, Radiotherapy and Nuclear Medicine, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ahmadreza Azarm
- Department of Medical Physics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jalil Pirayesh Islamian
- Department of Medical Physics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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Rodríguez LS, Thang SP, Li H, Khor LK, Tay YS, Myint KO, Tong AKT. A descriptive analysis of remnant activity during (90)Y resin microspheres radioembolization of hepatic tumors: technical factors and dosimetric implications. Ann Nucl Med 2015; 30:255-61. [PMID: 26692012 DOI: 10.1007/s12149-015-1052-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 12/08/2015] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Activity planning for (90)Y radioembolization aims to maximize the effect of the treatment while keeping toxicity acceptably low. Our aim was to describe the amount of residual activity in post-treatment v-vials and tubing and analyze the possible factors affecting it (total activity administered, number of split activity injection(s), previous treatments, administration artery and microcatheter size), as these may influence dosimetric planning and treatment. METHODS This was a retrospective review using case records of patients who received (90)Y-radioembolization for hepatic tumors at a single tertiary center. From August 2013 to September 2015, seventy-seven out of one hundred and fifty patients who received radioembolization with (90)Y resin microspheres due to inoperable Hepatocellular Carcinoma (HCC) or liver metastases were included. The rest were mainly excluded due to incomplete data sets. The number of split activities (injections) for the radioembolization could be: one single injection, two or three. The remnant activity in post-treatment v-vials and tubing were measured for every patient. The administration arteries evaluated were: proper hepatic artery (PHA), right hepatic artery (RHA), middle hepatic artery (MHA), left hepatic artery (LHA) and small caliber branch arteries. The sizes of the microcatheters (2.2 or 2.7 Fr) used to administer the dose were also evaluated. RESULTS In total, 77 out of 150 patients were included in the final analysis. There were 59 men of median age 64.0 years old. The total median dose loss was 0.10 GBq. The total dose loss increased 0.244 GBq [95 % CI = (0.169, 0.318)] when three split activities were given compared to single activity injection. Activity loss for each injection increased 0.0297 GBq [95 % CI = (0.0151, 0.0443)] for every 1.0 GBq increase of split activity injection. There were no significant statistical differences in the rest of patient characteristics. CONCLUSIONS There is significant loss of activity observed during radioembolization, which can have a major dosimetric impact. The total administered activity and the number of split injections during radioembolization are the main influencing factors. Further prospective studies as well as measures of clinical outcome are warranted.
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Affiliation(s)
- Lidia Sancho Rodríguez
- Department of Nuclear Medicine, Clínica Universidad de Navarra, Avenida Pio XII, 36, Pamplona, 31008, Navarra, Spain.
| | - Sue Ping Thang
- Department of Nuclear Medicine and PET, Singapore General Hospital, Outram Road, Singapore, 169608, Singapore
| | - HuiHua Li
- Division of Research, Singapore General Hospital, Outram Road, Singapore, 169608, Singapore
| | - Lih Kin Khor
- Department of Diagnostic Imaging, National University Hospital, Singapore, 5 Lower Kent Ridge Rd, Singapore, 119074, Singapore
| | - Young Soon Tay
- Department of Nuclear Medicine and PET, Singapore General Hospital, Outram Road, Singapore, 169608, Singapore
| | - Khin Ohnmar Myint
- Department of Nuclear Medicine and PET, Singapore General Hospital, Outram Road, Singapore, 169608, Singapore
| | - Aaron Kian Ti Tong
- Department of Nuclear Medicine and PET, Singapore General Hospital, Outram Road, Singapore, 169608, Singapore
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Ahmadzadehfar H, Meyer C, Pieper CC, Bundschuh R, Muckle M, Gärtner F, Schild HH, Essler M. Evaluation of the delivered activity of yttrium-90 resin microspheres using sterile water and 5 % glucose during administration. EJNMMI Res 2015; 5:54. [PMID: 26463848 PMCID: PMC4604161 DOI: 10.1186/s13550-015-0133-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 10/06/2015] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND The purpose of this study is to evaluate the impact of switching from sterile water to 5 % glucose (G5W) for the administration of yttrium-90 ((90)Y)-resin microspheres on the total activity of (90)Y administered (expressed as a proportion of the prescribed/calculated activity), as well as the number of cases of stasis and the reported incidence of discomfort during the selective internal radiation therapy (SIRT) procedure. METHODS In December 2013, we switched from sterile water to G5W for the administration of SIRT using (90)Y resin microspheres in all patients. This retrospective observational single-center case series describes our experience in the months preceding and after the switch. Apart from the change in administration medium, the protocol for SIRT was otherwise identical. RESULTS One hundred and four SIRT procedures were performed on 78 patients (45 male, mean age: 63 years, range: 31-87 years) with either unresectable hepatocellular carcinoma, cholangiocarcinoma, or chemorefractory liver-dominant metastatic cancer. Compared with sterile water, the whole prescribed activity was administered in significantly more procedures with G5W: 85 vs. 22 %; p < 0.0001. A significantly higher proportion of the calculated activity was administered with G5W: 96.1 ± 11.0 % vs. 77.4 ± 24.3 % (p < 0.0001). G5W procedures were also associated with a significantly lower incidence of stasis (28 vs. 11 % procedures; p = 0.02) and mild-to-moderate upper abdominal pain during the procedure (1.8 vs. 44 % procedures; p < 0.0001). CONCLUSIONS Replacing sterile water with isotonic G5W during administration favorably impacts on the safety of SIRT, eliminates and/or minimizes flow reductions and stasis/reflux during administration of (90)Y resin microspheres, improves percentage activity delivered, and reduces peri-procedural pain.
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Affiliation(s)
- Hojjat Ahmadzadehfar
- Department of Nuclear Medicine, University Hospital Bonn, Sigmund-Freud-Str. 25, 53127, Bonn, Germany.
| | - Carsten Meyer
- Department of Radiology, University Hospital Bonn, Bonn, Germany
| | | | - Ralph Bundschuh
- Department of Nuclear Medicine, University Hospital Bonn, Sigmund-Freud-Str. 25, 53127, Bonn, Germany
| | - Marianne Muckle
- Department of Nuclear Medicine, University Hospital Bonn, Sigmund-Freud-Str. 25, 53127, Bonn, Germany
| | - Florian Gärtner
- Department of Nuclear Medicine, University Hospital Bonn, Sigmund-Freud-Str. 25, 53127, Bonn, Germany
| | | | - Markus Essler
- Department of Nuclear Medicine, University Hospital Bonn, Sigmund-Freud-Str. 25, 53127, Bonn, Germany
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Rodríguez-Fraile M, Iñarrairaegui M. Radioembolization with 90Y-microspheres for liver tumors. Rev Esp Med Nucl Imagen Mol 2015. [DOI: 10.1016/j.remnie.2015.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Abstract
In diagnostic nuclear medicine, the biokinetics of the radiopharmaceutical (actually of the radionuclide) is determined for a number of representative patients. At therapy, it is essential to determine the patient's individual biokinetics of the radiopharmaceutical in order to calculate the absorbed doses to critical normal organs/tissues and to the target volume(s) with high accuracy. For the diagnostic situations, there is still a lack of quantitative determinations of the organ/tissue contents of radiopharmaceuticals and their variation with time. Planar gamma camera imaging using the conjugate view technique combined with a limited number of SPECT/CT images is the main method for such studies. In a similar way, PET/CT is used for 3D image-based internal dosimetry for PET substances. The transition from stylised reference phantoms to voxel phantoms will lead to improved dose estimates for diagnostic procedures. Examples of dose coefficients and effective doses for diagnostic substances are given. For the therapeutic situation, a pre-therapeutic low activity administration is used for quantitative measurements of organ/tissue distribution data by a gamma camera or a SPECT- or PET-unit. Together with CT and/or MR images this will be the base for individual dose calculations using Monte Carlo technique. Treatments based on administered activity should only be used if biological variations between patients are small or if a pre-therapeutic activity administration is impossible.
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Affiliation(s)
- Sören Mattsson
- Medical Radiation Physics, Department of Translational Medicine, Lund University, Skåne University Hospital Malmö, SE-205 02 Malmö, Sweden
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Chiesa C, Mira M, Maccauro M, Spreafico C, Romito R, Morosi C, Camerini T, Carrara M, Pellizzari S, Negri A, Aliberti G, Sposito C, Bhoori S, Facciorusso A, Civelli E, Lanocita R, Padovano B, Migliorisi M, De Nile MC, Seregni E, Marchianò A, Crippa F, Mazzaferro V. Radioembolization of hepatocarcinoma with (90)Y glass microspheres: development of an individualized treatment planning strategy based on dosimetry and radiobiology. Eur J Nucl Med Mol Imaging 2015; 42:1718-1738. [PMID: 26112387 DOI: 10.1007/s00259-015-3068-8] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 04/09/2015] [Indexed: 12/30/2022]
Abstract
PURPOSE The aim of this study was to optimize the dosimetric approach and to review the absorbed doses delivered, taking into account radiobiology, in order to identify the optimal methodology for an individualized treatment planning strategy based on (99m)Tc-macroaggregated albumin (MAA) single photon emission computed tomography (SPECT) images. METHODS We performed retrospective dosimetry of the standard TheraSphere® treatment on 52 intermediate (n = 17) and advanced (i.e. portal vein thrombosis, n = 35) hepatocarcinoma patients with tumour burden < 50% and without obstruction of the main portal vein trunk. Response was monitored with the densitometric radiological criterion (European Association for the Study of the Liver) and treatment-related liver decompensation was defined ad hoc with a time cut-off of 6 months. Adverse events clearly attributable to disease progression or other causes were not attributed to treatment. Voxel dosimetry was performed with the local deposition method on (99m)Tc-MAA SPECT images. The reconstruction protocol was optimized. Concordance of (99m)Tc-MAA and (90)Y bremsstrahlung microsphere biodistributions was studied in 35 sequential patients. Two segmentation methods were used, based on SPECT alone (home-made code) or on coregistered SPECT/CT images (IMALYTICS™ by Philips). STRATOS™ absorbed dose calculation was validated for (90)Y with a single time point. Radiobiology was used introducing other dosimetric variables besides the mean absorbed dose D: equivalent uniform dose (EUD), biologically effective dose averaged over voxel values (BEDave) and equivalent uniform biologically effective dose (EUBED). Two sets of radiobiological parameters, the first derived from microsphere irradiation and the second from external beam radiotherapy (EBRT), were used. A total of 16 possible methodologies were compared. Tumour control probability (TCP) and normal tissue complication probability (NTCP) were derived. The area under the curve (AUC) of the receiver-operating characteristic (ROC) curve was used as a figure of merit to identify the methodology which gave the best separation in terms of dosimetry between responding and non-responding lesions and liver decompensated vs non-decompensated liver treatment. RESULTS MAA and (90)Y biodistributions were not different (71% of cases), different in 23% and uncertain in 6%. Response correlated with absorbed dose (Spearman's r from 0.48 to 0.69). Responding vs non-responding lesion absorbed doses were well separated, regardless of the methodology adopted (p = 0.0001, AUC from 0.75 to 0.87). EUBED gave significantly better separation with respect to mean dose (AUC = 0.87 vs 0.80, z = 2.07). Segmentation on SPECT gave better separation than on SPECT/CT. TCP(50%) was at 250 Gy for small lesion volumes (<10 cc) and higher than 1,000 Gy for large lesions (>10 cc). Apparent radiosensitivity values from TCP were around 0.003/Gy, a factor of 3-5 lower than in EBRT, as found by other authors. The dose-rate effect was negligible: a purely linear model can be applied. Toxicity incidence was significantly larger for Child B7 patients (89 vs 14%, p < 0.0001), who were therefore excluded from dose-toxicity analysis. Child A toxic vs non-toxic treatments were significantly separated in terms of dose averaged on whole non-tumoural parenchyma (including non-irradiated regions) with AUC from 0.73 to 0.94. TD50 was ≈ 100 Gy. No methodology was superior to parenchyma mean dose, which therefore can be used for planning, with a limit of TD15 ≈ 75 Gy. CONCLUSION A dosimetric treatment planning criterion for Child A patients without complete obstruction of the portal vein was developed.
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Affiliation(s)
- C Chiesa
- Nuclear Medicine Division, Foundation IRCCS Istituto Nazionale Tumori, Via Giacomo Venezian 1, 20133, Milan, Italy.
| | - M Mira
- Postgraduate Health Physics School, University of Milan, Milan, Italy
| | - M Maccauro
- Nuclear Medicine Division, Foundation IRCCS Istituto Nazionale Tumori, Via Giacomo Venezian 1, 20133, Milan, Italy
| | - C Spreafico
- Radiology 2, Foundation IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - R Romito
- Surgery 1, Foundation IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - C Morosi
- Radiology 2, Foundation IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - T Camerini
- Scientific Direction, Foundation IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - M Carrara
- Health Physics, Foundation IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - S Pellizzari
- Engineering Faculty, University La Sapienza, Rome, Italy
| | - A Negri
- Postgraduate Health Physics School, University of Milan, Milan, Italy
| | - G Aliberti
- Nuclear Medicine Division, Foundation IRCCS Istituto Nazionale Tumori, Via Giacomo Venezian 1, 20133, Milan, Italy
| | - C Sposito
- Surgery 1, Foundation IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - S Bhoori
- Surgery 1, Foundation IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - A Facciorusso
- Surgery 1, Foundation IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - E Civelli
- Radiology 2, Foundation IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - R Lanocita
- Radiology 2, Foundation IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - B Padovano
- Nuclear Medicine Division, Foundation IRCCS Istituto Nazionale Tumori, Via Giacomo Venezian 1, 20133, Milan, Italy
| | - M Migliorisi
- Nuclear Medicine Division, Foundation IRCCS Istituto Nazionale Tumori, Via Giacomo Venezian 1, 20133, Milan, Italy
- Clinical Engineering, Foundation IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - M C De Nile
- Physics Faculty, University of Pavia, Pavia, Lombardy, Italy
| | - E Seregni
- Nuclear Medicine Division, Foundation IRCCS Istituto Nazionale Tumori, Via Giacomo Venezian 1, 20133, Milan, Italy
| | - A Marchianò
- Radiology 2, Foundation IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - F Crippa
- Nuclear Medicine Division, Foundation IRCCS Istituto Nazionale Tumori, Via Giacomo Venezian 1, 20133, Milan, Italy
| | - V Mazzaferro
- Surgery 1, Foundation IRCCS Istituto Nazionale Tumori, Milan, Italy
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Roshan HR, Azarm A, Mahmoudian B, Islamian JP. Advances in SPECT for Optimizing the Liver Tumors Radioembolization Using Yttrium-90 Microspheres. World J Nucl Med 2015; 14:75-80. [PMID: 26097416 PMCID: PMC4455176 DOI: 10.4103/1450-1147.157120] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Radioembolization (RE) with Yttrium-90 ((90)Y) microspheres is an effective treatment for unresectable liver tumors. The activity of the microspheres to be administered should be calculated based on the type of microspheres. Technetium-99m macroaggregated albumin ((99m)Tc-MAA) single photon emission computed tomography/computed tomography (SPECT/CT) is a reliable assessment before RE to ensure the safe delivery of microspheres into the target. (90)Y bremsstrahlung SPECT imaging as a posttherapeutic assessment approach enables the reliable determination of absorbed dose, which is indispensable for the verification of treatment efficacy. This article intends to provide a review of the methods of optimizing (90)Y bremsstrahlung SPECT imaging to improve the treatment efficacy of liver tumor RE using (90)Y microspheres.
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Affiliation(s)
- Hoda Rezaei Roshan
- Department of Medical Physics, Nuclear Medicine Unit, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ahmadreza Azarm
- Department of Medical Physics, Nuclear Medicine Unit, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Babak Mahmoudian
- Department of Radiology, Nuclear Medicine Unit, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jalil Pirayesh Islamian
- Department of Medical Physics, Nuclear Medicine Unit, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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63
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Radioembolization with Yttrium-90 microspheres in hepatocellular carcinoma: Role and perspectives. World J Hepatol 2015. [PMID: 25914774 DOI: 10.4254/wjh.v7.i5.738].] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Transarterial radioembolization (TARE) is a form of brachytherapy in which intra-arterially injected yttrium-90-loaded microspheres serve as a source for internal radiation purposes. On the average, it produces disease control rates exceeding 80% and it is a consolidated therapy for hepatocellular carcinoma (HCC); however, current data are all based on retrospective series or non-controlled prospective studies since randomized controlled trials comparing it with the other liver-directed therapies for intermediate and locally advanced stage HCC are still underway. The data available show that TARE provides similar or even better survival rates when compared to transarterial chemoembolization (TACE). First-line TARE is best indicated for both intermediate-stage patients (staged according to the barcelona clinic liver cancer staging classification) who have lesions which respond poorly to TACE due to multiple tumors or a large tumor burden, and for locally advanced-stage patients with solitary tumors, and segmental or lobar portal vein tumor thrombosis. In addition, emerging data have suggested the use of TARE in patients who are classified slightly beyond the Milan criteria regarding radical treatment for downstaging purposes. As a second-line treatment, TARE can also be applied in patients progressing to TACE or sorafenib; a large number of phase II/III trials are ongoing with the purpose of evaluating the best association with systemic therapies. Transarterial radioembolization is very well tolerated and has a low rate of complications which are mainly related to unintended non-target tissue irradiation, including the surrounding liver parenchyma. The complications can be additionally reduced by accurate patient selection and a strict pre-treatment evaluation including dosimetry and assessment of the vascular anatomy. Since a correct treatment algorithm for potential TARE candidates is not clear and standardized, this comprehensive review analyzes the best selection criteria for patients who really benefit from TARE and also the new advances of this therapy, which can be a very important weapon against HCC.
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64
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Rodríguez-Fraile M, Iñarrairaegui M. [Radioembolization with (90)Y-microspheres for liver tumors]. Rev Esp Med Nucl Imagen Mol 2015; 34:244-57. [PMID: 25911062 DOI: 10.1016/j.remn.2015.03.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 03/12/2015] [Accepted: 03/13/2015] [Indexed: 12/16/2022]
Affiliation(s)
- M Rodríguez-Fraile
- Servicio de Medicina Nuclear, Clínica Universidad de Navarra, Pamplona, Navarra; Área de Oncología Hepatobiliopancreática, Clínica Universidad de Navarra, Pamplona, Navarra, España; Instituto de Investigaciones Sanitarias de Navarra (IDISNA), España.
| | - M Iñarrairaegui
- Unidad de Hepatología, Clínica Universidad de Navarra, Pamplona, Navarra, España; Área de Oncología Hepatobiliopancreática, Clínica Universidad de Navarra, Pamplona, Navarra, España; Instituto de Investigaciones Sanitarias de Navarra (IDISNA), España; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Pamplona, España
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65
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Mosconi C, Cappelli A, Pettinato C, Golfieri R. Radioembolization with Yttrium-90 microspheres in hepatocellular carcinoma: Role and perspectives. World J Hepatol 2015; 7:738-52. [PMID: 25914774 PMCID: PMC4404379 DOI: 10.4254/wjh.v7.i5.738] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 12/09/2014] [Accepted: 01/15/2015] [Indexed: 02/06/2023] Open
Abstract
Transarterial radioembolization (TARE) is a form of brachytherapy in which intra-arterially injected yttrium-90-loaded microspheres serve as a source for internal radiation purposes. On the average, it produces disease control rates exceeding 80% and it is a consolidated therapy for hepatocellular carcinoma (HCC); however, current data are all based on retrospective series or non-controlled prospective studies since randomized controlled trials comparing it with the other liver-directed therapies for intermediate and locally advanced stage HCC are still underway. The data available show that TARE provides similar or even better survival rates when compared to transarterial chemoembolization (TACE). First-line TARE is best indicated for both intermediate-stage patients (staged according to the barcelona clinic liver cancer staging classification) who have lesions which respond poorly to TACE due to multiple tumors or a large tumor burden, and for locally advanced-stage patients with solitary tumors, and segmental or lobar portal vein tumor thrombosis. In addition, emerging data have suggested the use of TARE in patients who are classified slightly beyond the Milan criteria regarding radical treatment for downstaging purposes. As a second-line treatment, TARE can also be applied in patients progressing to TACE or sorafenib; a large number of phase II/III trials are ongoing with the purpose of evaluating the best association with systemic therapies. Transarterial radioembolization is very well tolerated and has a low rate of complications which are mainly related to unintended non-target tissue irradiation, including the surrounding liver parenchyma. The complications can be additionally reduced by accurate patient selection and a strict pre-treatment evaluation including dosimetry and assessment of the vascular anatomy. Since a correct treatment algorithm for potential TARE candidates is not clear and standardized, this comprehensive review analyzes the best selection criteria for patients who really benefit from TARE and also the new advances of this therapy, which can be a very important weapon against HCC.
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Affiliation(s)
- Cristina Mosconi
- Cristina Mosconi, Alberta Cappelli, Rita Golfieri, Radiology Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum-University of Bologna, 40138 Bologna, Italy
| | - Alberta Cappelli
- Cristina Mosconi, Alberta Cappelli, Rita Golfieri, Radiology Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum-University of Bologna, 40138 Bologna, Italy
| | - Cinzia Pettinato
- Cristina Mosconi, Alberta Cappelli, Rita Golfieri, Radiology Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum-University of Bologna, 40138 Bologna, Italy
| | - Rita Golfieri
- Cristina Mosconi, Alberta Cappelli, Rita Golfieri, Radiology Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum-University of Bologna, 40138 Bologna, Italy
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66
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Mosconi C, Cappelli A, Pettinato C, Golfieri R. Radioembolization with Yttrium-90 microspheres in hepatocellular carcinoma: Role and perspectives. World J Hepatol 2015. [PMID: 25914774 DOI: 10.4254/wjh.v7.i5.738]] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Transarterial radioembolization (TARE) is a form of brachytherapy in which intra-arterially injected yttrium-90-loaded microspheres serve as a source for internal radiation purposes. On the average, it produces disease control rates exceeding 80% and it is a consolidated therapy for hepatocellular carcinoma (HCC); however, current data are all based on retrospective series or non-controlled prospective studies since randomized controlled trials comparing it with the other liver-directed therapies for intermediate and locally advanced stage HCC are still underway. The data available show that TARE provides similar or even better survival rates when compared to transarterial chemoembolization (TACE). First-line TARE is best indicated for both intermediate-stage patients (staged according to the barcelona clinic liver cancer staging classification) who have lesions which respond poorly to TACE due to multiple tumors or a large tumor burden, and for locally advanced-stage patients with solitary tumors, and segmental or lobar portal vein tumor thrombosis. In addition, emerging data have suggested the use of TARE in patients who are classified slightly beyond the Milan criteria regarding radical treatment for downstaging purposes. As a second-line treatment, TARE can also be applied in patients progressing to TACE or sorafenib; a large number of phase II/III trials are ongoing with the purpose of evaluating the best association with systemic therapies. Transarterial radioembolization is very well tolerated and has a low rate of complications which are mainly related to unintended non-target tissue irradiation, including the surrounding liver parenchyma. The complications can be additionally reduced by accurate patient selection and a strict pre-treatment evaluation including dosimetry and assessment of the vascular anatomy. Since a correct treatment algorithm for potential TARE candidates is not clear and standardized, this comprehensive review analyzes the best selection criteria for patients who really benefit from TARE and also the new advances of this therapy, which can be a very important weapon against HCC.
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Affiliation(s)
- Cristina Mosconi
- Cristina Mosconi, Alberta Cappelli, Rita Golfieri, Radiology Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum-University of Bologna, 40138 Bologna, Italy
| | - Alberta Cappelli
- Cristina Mosconi, Alberta Cappelli, Rita Golfieri, Radiology Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum-University of Bologna, 40138 Bologna, Italy
| | - Cinzia Pettinato
- Cristina Mosconi, Alberta Cappelli, Rita Golfieri, Radiology Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum-University of Bologna, 40138 Bologna, Italy
| | - Rita Golfieri
- Cristina Mosconi, Alberta Cappelli, Rita Golfieri, Radiology Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum-University of Bologna, 40138 Bologna, Italy
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67
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Prognostic factors for prediction of survival of hepatocellular cancer patients after selective internal radiation therapy. Ann Nucl Med 2015; 29:426-30. [PMID: 25783289 DOI: 10.1007/s12149-015-0962-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Accepted: 03/10/2015] [Indexed: 01/17/2023]
Abstract
AIM In this study, it was aimed to explore the prognostic factors in patients who received selective internal radiation therapy for hepatocellular cancer. MATERIALS AND METHODS A retrospective evaluation was made of 28 (24 male, 4 female, mean age 65.4 ± 6.8 years) hepatocellular cancer patients who received selective internal radiation therapy with Y-90 resin microspheres. Using Cox proportional hazards regression analysis, the relationship between age, gender, MELD score, serum albumin and AFP levels, number of liver lesions, size of the largest lesion, absence of (18)F-FDG uptake, maximum standardized uptake value and overall survival times was analyzed. RESULTS Treatment was applied to the right lobe in 22 and both in 6 patients. Mean treatment dose was 1.5 ± 0.2 GBq. Number of liver lesions were 1, <5 and multiple in 16, 5 and 7 patients, respectively, and the mean size of the largest lesion was 41.5 mm (min-max 15-160 mm). While (18)F-FDG uptake was seen in 24 patients, liver lesions were hypometabolic in 4 patients. Mean SUVmax of liver lesions was calculated as 5.3 ± 0.3. During the mean 17.8 (min-max 2-39) months follow-up period, 19 patients died. Median survival time was computed as 18 ± 5 months (95% CI 8.1-27.8). Age (p = 0.04), serum AFP level (p = 0.03) and size of the largest lesion (p = 0.02) had a significant negative effect on survival according to the Cox proportional hazards regression analysis. CONCLUSION Age, serum AFP level and the size of the largest liver lesion have a negative significant effect on survival of hepatocellular cancer patients who received selective internal radiation therapy.
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68
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Sabet A, Ahmadzadehfar H, Bruhman J, Sabet A, Meyer C, Wasmuth JC, Pieper CC, Biersack HJ, Ezziddin S. Survival in patients with hepatocellular carcinoma treated with 90Y-microsphere radioembolization. Prediction by 18F-FDG PET. Nuklearmedizin 2014; 53:39-45. [PMID: 24777354 DOI: 10.3413/nukmed-0622-13-09] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Accepted: 11/05/2013] [Indexed: 02/06/2023]
Abstract
AIM This retrospective study aims to evaluate the predictive value of FDG PET/CT in patients with unresectable hepatocellular carcinoma (HCC) undergoing radioembolization with yttrium-90 labeled microspheres (RE). PATIENTS, METHODS The study cohort comprised 33 patients who were treated with RE at our institution and underwent FDG PET/CT at baseline and four weeks after radioembolization. According to the baseline FDG metabolic status of the HCC lesions, patients were divided into two groups: FDG-negative (n = 12) and FDG-positive (n = 21) HCC. FDG-positive patients were further divided into early metabolic responders and non-responders according to the relative change in SUVmax of the treated lesions. Survival analyses were performed with the Kaplan-Meier method (log-rank test, p < 0.05). Multivariate analysis was performed to assess the influence of prognostic factors on overall survival (OS). RESULTS FDG-negative patients had a significantly longer OS (13 months, 95%CI 7-19) than FDG-positive patients (9 months, 95%CI 7-11; p = 0.010). Among FDG-positive patients, metabolic responders survived significantly longer than metabolic non-responders (10 months, 95%CI 8-12 vs. 5 months, 95%CI 4-6; p = 0.003). From the other baseline factors (including performance status, hepatic tumour burden, presence of extra-hepatic disease, administered activity) only the BCLC stage had a significant impact on OS (p = 0.028). CONCLUSION Pre- and post-therapeutic FDG PET independently predicts overall survival in patients with HCC undergoing radioembolization. Interestingly, early metabolic response seems to be assessable as early as four weeks post-treatment.
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Affiliation(s)
| | | | | | | | | | | | | | | | - S Ezziddin
- Samer Ezziddin, MD, Department of Nuclear Medicine University Hospital, Sigmund-Freud-Str. 25, 53105 Bonn, Germany, Tel. +49/(0)228/28 71 91 74, Fax +49/(0)228/28 79 01 91 74, E-mail:
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69
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Cappelli A, Pettinato C, Golfieri R. Transarterial radioembolization using yttrium-90 microspheres in the treatment of hepatocellular carcinoma: a review on clinical utility and developments. J Hepatocell Carcinoma 2014; 1:163-82. [PMID: 27508185 PMCID: PMC4918277 DOI: 10.2147/jhc.s50472] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
A selective intra-arterial liver injection using yttrium-90-loaded microspheres as sources for internal radiation therapy is a form of transarterial radioembolization (TARE). Current data from the literature suggest that TARE is effective in hepatocellular carcinoma (HCC) and is associated with a low rate of adverse events; however, they are all based on retrospective series or non-controlled prospective studies, since randomized controlled trials comparing the other liver-directed therapies for intermediate and locally advanced stages HCC are still ongoing. The available data show that TARE provides similar or even better survival rates. TARE is very well tolerated and has a low rate of complications; these complications do not result from the embolic effects but mainly from the unintended irradiation to non-target tissue, including the liver parenchyma. The complications can be further reduced by accurate patient selection and a strict pre-treatment evaluation, including dosimetry and assessment of the vascular anatomy. First-line TARE is best indicated for intermediate-stage patients (according to the Barcelona Clinic Liver Cancer [BCLC] staging classification) who are poor candidates for transarterial chemoembolization or patients having locally advanced disease with segmental or lobar branch portal vein thrombosis. Moreover, data are emerging regarding the use of TARE in patients classified slightly above the criteria for liver transplantation with the purpose of downstaging them. TARE can also be applied as a second-line treatment in patients progressing to transarterial chemoembolization or sorafenib; a large number of Phase II/III trials are in progress in order to evaluate the best association with systemic therapies. Given the complexity of a correct treatment algorithm for potential TARE candidates and the need for clinical guidance, a comprehensive review was carried out analyzing both the best selection criteria of patients who really benefit from TARE and the new advances of this therapy which add significant value to the therapeutic weaponry against HCC.
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Affiliation(s)
| | - Cinzia Pettinato
- Medical Physics Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum - University of Bologna, S Orsola-Malpighi Hospital, Bologna, Italy
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70
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Early post-treatment FDG PET predicts survival after 90Y microsphere radioembolization in liver-dominant metastatic colorectal cancer. Eur J Nucl Med Mol Imaging 2014; 42:370-6. [PMID: 25351506 DOI: 10.1007/s00259-014-2935-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 10/03/2014] [Indexed: 12/22/2022]
Abstract
PURPOSE The aim of this study was to evaluate the predictive value of early metabolic response 4 weeks post-treatment using (18)F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/CT in patients with unresectable hepatic metastases of colorectal cancer (CRC) undergoing radioembolization (RE) with (90)Y-labelled microspheres. METHODS A total of 51 consecutive patients with liver-dominant metastases of CRC were treated with RE and underwent (18)F-FDG PET/CT at baseline and 4 weeks after RE. In each patient, three hepatic metastases with the highest maximum standardized uptake value (SUVmax) were selected as target lesions. Metabolic response was defined as >50 % reduction of tumour to liver ratios. Survival analyses using Kaplan-Meier and multivariate analyses were performed to identify prognostic factors for overall survival (OS). Investigated baseline characteristics included age (>60 years), performance status (Eastern Cooperative Oncology Group >1), bilirubin (>1.0 mg/dl), hepatic tumour burden (>25 %) and presence of extrahepatic disease. RESULTS The median OS after RE was 7 months [95 % confidence interval (CI) 5-8]; early metabolic responders (n = 33) survived longer than non-responders (p < 0.001) with a median OS of 10 months (95 % CI 3-16) versus 4 months (95 % CI 2-6). Hepatic tumour burden also had significant impact on treatment outcome (p < 0.001) with a median OS of 5 months (95 % CI, 3-7) for patients with >25 % metastatic liver replacement vs 14 months (95 % CI 6-22) for the less advanced patients. Both factors (early metabolic response and low hepatic tumour burden) remained as independent predictors of improved survival on multivariate analysis. CONCLUSION These are the first findings to show that molecular response assessment in CRC using (18)F-FDG PET/CT appears feasible as early as 4 weeks post-RE, allowing risk stratification and potentially facilitating early response-adapted treatment strategies.
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71
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Impact of Prior Hepatectomy on the Safety and Efficacy of Radioembolization With Yttrium-90 Microspheres for Patients With Unresectable Liver Tumors. Am J Clin Oncol 2014; 37:454-60. [DOI: 10.1097/coc.0b013e31827deea1] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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72
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Haga H, Patel T. Molecular diagnosis of intrahepatic cholangiocarcinoma. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2014; 22:114-23. [PMID: 25267595 DOI: 10.1002/jhbp.156] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Intrahepatic cholangiocarcinomas (iCCA) are primary intrahepatic malignancies originating from biliary epithelia. While both hepatocellular cancer and iCCA can present as mass lesions within the liver, these cancers are distinct in their morphology, etiology, pathology, natural history and response to therapy. There is a need for accurate and sensitive molecular markers for the diagnosis of iCCA. Recent advances in elucidating molecular and genetic characteristics of iCCA offer the potential of molecular-based diagnosis of iCCA. Specific genetic mutations of IDH1/2, BAP1, p53, and KRAS, FGFR gene fusions and alterations in microRNA have all been described in iCCA. Although there are no accurate serum or biliary biomarkers currently available for diagnosis of iCCA, several potential candidates have been identified. Knowledge of specific genetic or molecular abnormalities offers potential for individualized approaches for the treatment of patients with iCCA in the future.
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Affiliation(s)
- Hiroaki Haga
- Department of Cancer Biology, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL, 32224, USA.
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73
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Busse N, Erwin W, Pan T. Evaluation of a semiautomated lung mass calculation technique for internal dosimetry applications. Med Phys 2014; 40:122503. [PMID: 24320539 DOI: 10.1118/1.4830433] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE The authors sought to evaluate a simple, semiautomated lung mass estimation method using computed tomography (CT) scans obtained using a variety of acquisition techniques and reconstruction parameters for mass correction of medical internal radiation dose-based internal radionuclide radiation absorbed dose estimates. METHODS CT scans of 27 patients with lung cancer undergoing stereotactic body radiation therapy treatment planning with PET∕CT were analyzed retrospectively. For each patient, free-breathing (FB) and respiratory-gated 4DCT scans were acquired. The 4DCT scans were sorted into ten respiratory phases, representing one complete respiratory cycle. An average CT reconstruction was derived from the ten-phase reconstructions. Mid expiration breath-hold CT scans were acquired in the same session for many patients. Deep inspiration breath-hold diagnostic CT scans of many of the patients were obtained from different scanning sessions at similar time points to evaluate the effect of contrast administration and maximum inspiration breath-hold. Lung mass estimates were obtained using all CT scan types, and intercomparisons made to assess lung mass variation according to scan type. Lung mass estimates using the FB CT scans from PET∕CT examinations of another group of ten male and ten female patients who were 21-30 years old and did not have lung disease were calculated and compared with reference lung mass values. To evaluate the effect of varying CT acquisition and reconstruction parameters on lung mass estimation, an anthropomorphic chest phantom was scanned and reconstructed with different CT parameters. CT images of the lungs were segmented using the OsiriX MD software program with a seed point of about -850 HU and an interval of 1000. Lung volume, and mean lung, tissue, and air HUs were recorded for each scan. Lung mass was calculated by assuming each voxel was a linear combination of only air and tissue. The specific gravity of lung volume was calculated using the formula (lung HU - air HU)∕(tissue HU - air HU), and mass = specific gravity × total volume × 1.04 g∕cm(3). RESULTS The range of calculated lung masses was 0.51-1.29 kg. The average male and female lung masses during FB CT were 0.80 and 0.71 kg, respectively. The calculated lung mass varied across the respiratory cycle but changed to a lesser degree than did lung volume measurements (7.3% versus 15.4%). Lung masses calculated using deep inspiration breath-hold and average CT were significantly larger (p < 0.05) than were some masses calculated using respiratory-phase and FB CT. Increased voxel size and smooth reconstruction kernels led to high lung mass estimates owing to partial volume effects. CONCLUSIONS Organ mass correction is an important component of patient-specific internal radionuclide dosimetry. Lung mass calculation necessitates scan-based density correction to account for volume changes owing to respiration. The range of lung masses in the authors' patient population represents lung doses for the same absorbed energy differing from 25% below to 64% above the dose found using reference phantom organ masses. With proper management of acquisition parameters and selection of FB or midexpiration breath hold scans, lung mass estimates with about 10% population precision may be achieved.
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Affiliation(s)
- Nathan Busse
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030
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74
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Braat AJAT, Huijbregts JE, Molenaar IQ, Borel Rinkes IHM, van den Bosch MAAJ, Lam MGEH. Hepatic radioembolization as a bridge to liver surgery. Front Oncol 2014; 4:199. [PMID: 25126539 PMCID: PMC4115667 DOI: 10.3389/fonc.2014.00199] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Accepted: 07/15/2014] [Indexed: 12/11/2022] Open
Abstract
Treatment of oncologic disease has improved significantly in the last decades and in the future a vast majority of cancer types will continue to increase worldwide. As a result, many patients are confronted with primary liver cancers or metastatic liver disease. Surgery in liver malignancies has steeply improved and curative resections are applicable in wider settings, leading to a prolonged survival. Simultaneously, radiofrequency ablation (RFA) and liver transplantation (LTx) have been applied more commonly in oncologic settings with improving results. To minimize adverse events in treatments of liver malignancies, locoregional minimal invasive treatments have made their appearance in this field, in which radioembolization (RE) has shown promising results in recent years with few adverse events and high response rates. We discuss several other applications of RE for oncologic patients, other than its use in the palliative setting, whether or not combined with other treatments. This review is focused on the role of RE in acquiring patient eligibility for radical treatments, like surgery, RFA, and LTx. Inducing significant tumor reduction can downstage patients for resection or, through attaining stable disease, patients can stay on the LTx waiting list. Hereby, RE could make a difference between curative of palliative intent in oncologic patient management. Prior to surgery, the future remnant liver volume might be inadequate in some patients. In these patients, forming an adequate liver reserve through RE leads to prolonged survival without risking post-operative liver failure and minimizing tumor progression while inducing hypertrophy. In order to optimize results, developments in procedures surrounding RE are equally important. Predicting the remaining liver function after radical treatment and finding the right balance between maximum tumor irradiation and minimizing the chance of inducing radiation-related complications are still challenges.
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Affiliation(s)
- Arthur J A T Braat
- Department of Radiology and Nuclear Medicine, University Medical Center Utrecht , Utrecht , Netherlands
| | - Julia E Huijbregts
- Department of Radiology and Nuclear Medicine, University Medical Center Utrecht , Utrecht , Netherlands
| | - I Quintus Molenaar
- Department of Surgery, University Medical Center Utrecht , Utrecht , Netherlands
| | | | | | - Marnix G E H Lam
- Department of Radiology and Nuclear Medicine, University Medical Center Utrecht , Utrecht , Netherlands
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Stenvall A, Larsson E, Strand SE, Jönsson BA. A small-scale anatomical dosimetry model of the liver. Phys Med Biol 2014; 59:3353-71. [PMID: 24874832 DOI: 10.1088/0031-9155/59/13/3353] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Radionuclide therapy is a growing and promising approach for treating and prolonging the lives of patients with cancer. For therapies where high activities are administered, the liver can become a dose-limiting organ; often with a complex, non-uniform activity distribution and resulting non-uniform absorbed-dose distribution. This paper therefore presents a small-scale dosimetry model for various source-target combinations within the human liver microarchitecture. Using Monte Carlo simulations, Medical Internal Radiation Dose formalism-compatible specific absorbed fractions were calculated for monoenergetic electrons; photons; alpha particles; and (125)I, (90)Y, (211)At, (99m)Tc, (111)In, (177)Lu, (131)I and (18)F. S values and the ratio of local absorbed dose to the whole-organ average absorbed dose was calculated, enabling a transformation of dosimetry calculations from macro- to microstructure level. For heterogeneous activity distributions, for example uptake in Kupffer cells of radionuclides emitting low-energy electrons ((125)I) or high-LET alpha particles ((211)At) the target absorbed dose for the part of the space of Disse, closest to the source, was more than eight- and five-fold the average absorbed dose to the liver, respectively. With the increasing interest in radionuclide therapy of the liver, the presented model is an applicable tool for small-scale liver dosimetry in order to study detailed dose-effect relationships in the liver.
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Affiliation(s)
- Anna Stenvall
- Department of Medical Radiation Physics, Clinical Sciences, Lund University, Lund, Sweden
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Sperling J, Justinger C, Schuld J, Ziemann C, Seidel R, Kollmar O. Intrahepatic cholangiocarcinoma in a transplant liver--selective internal radiation therapy followed by right hemihepatectomy: report of a case. World J Surg Oncol 2014; 12:198. [PMID: 24980217 PMCID: PMC4099142 DOI: 10.1186/1477-7819-12-198] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 06/12/2014] [Indexed: 12/23/2022] Open
Abstract
Intra- or extrahepatic cholangiocarcinomas are the second most common primary liver malignancies behind hepatocellular carcinoma. Whereas the incidence for intrahepatic cholangiocarcinoma is rising, the occurrence of extrahepatic cholangiocarcinoma is trending downwards. The treatment of choice for intrahepatic cholangiocarcinoma remains liver resection. However, a case of liver resection after selective internal radiation therapy in order to treat a recurrent intrahepatic cholangiocarcinoma in a transplant liver is unknown in the literature so far. Herein, we present a case of a patient undergoing liver transplantation for Wilson’s disease with an accidental finding of an intrahepatic cholangiocarcinoma within the explanted liver. Due to a recurrent intrahepatic cholangiocarcinoma after liver transplantation, a selective internal radiation therapy with yttrium-90 microspheres was performed followed by right hemihepatectomy. Four years later, the patient is tumor-free and in a healthy condition.
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Affiliation(s)
| | | | | | | | | | - Otto Kollmar
- Present address: Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Georg August University, D-37075 Göttingen, Germany.
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Powerski MJ, Scheurig-Münkler C, Hamm B, Gebauer B. Impaired hepatic Gd-EOB-DTPA enhancement after radioembolisation of liver malignancies. J Med Imaging Radiat Oncol 2014; 58:472-80. [PMID: 24964737 DOI: 10.1111/1754-9485.12187] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2013] [Accepted: 03/28/2014] [Indexed: 11/30/2022]
Abstract
INTRODUCTION To evaluate the uptake of the liver-specific magnetic resonance imaging (MRI) contrast agent gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA) by functional liver parenchyma after radioembolisation (RE) of hepatic malignancies. METHODS Uptake of Gd-EOB-DTPA prior to RE versus 60+/-24d and 126+/-32d after RE was compared in a group of 33 patients with primary or secondary hepatic malignancies. In patients who underwent single-lobe treatment, left and right lobes were compared 59+/-24 days after RE. Gd-EOB-DTPA uptake was determined as follows: ratio of mean signal intensity in liver parenchyma to muscle in Gd-EOB-DTPA-enhanced T1-weighted MRI was subtracted from ratio of mean intensity in liver parenchyma to muscle in unenhanced T1-weighted MRI. RESULTS Gd-EOB-DTPA uptake in liver parenchyma was 0.845+/-0.29 before RE, 0.615+/-0.38 (P = 0.0022) at day 60+/-24, and 0.739+/-0.30 at day 126+/-32 after RE. In cases of single-lobe treatment, Gd-EOB-DTPA uptake was 0.581+/-0.256 for treated and 0.828+/-0.32 (P = 0.0164) for untreated hepatic lobes. CONCLUSIONS Uptake of Gd-EOB-DTPA by liver parenchyma is impaired after RE, indicating dysfunction of the local hepatic system. These findings suggest that Gd-EOB-DTPA-enhanced MRI has the potential to be used for monitoring liver damage after RE.
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Affiliation(s)
- Maciej Janusz Powerski
- Department of Radiology and Nuclear Medicine, Otto-von-Guericke University, Magdeburg, Germany
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Influence of time delay on the estimated lung shunt fraction on 99mTc-labeled MAA scintigraphy for 90Y microsphere treatment planning. Clin Nucl Med 2014; 38:940-2. [PMID: 24212439 DOI: 10.1097/rlu.0000000000000241] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
90Y-microspheres therapy is used to treat selected patients with primary or metastatic liver tumors in a safe and effective way. As a preparation for 90Y-microspheres treatment, a 99mTc-macroaggregated albumin (99mTc-MAA) simulation procedure is essential to evaluate particle shunting to the lung or gastrointestinal tract. We investigated the effect of interval between injection of 99mTc-MAA and time of scanning on the lung shunt fraction (LSF). In 4 patients with secondary hepatic malignancies who underwent repeated whole-body scintigraphy up to 5 hours after injection of 99mTc-MAA, a marked change in LSF was observed. It appears that tracer degradation leads to an important overestimation of LSF at later time points. An overestimation of LSF can lead to dose reduction or canceling of the planned 90Y-microspheres treatment. It is concluded that the interval between injection and scanning should be kept as short as possible.
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Amthauer H, Ulrich G, Grosser OS, Ricke J. Reply: Pretreatment Dosimetry in HCC Radioembolization with 90Y Glass Microspheres Cannot Be Invalidated with a Bare Visual Evaluation of 99mTc-MAA Uptake of Colorectal Metastases Treated with Resin Microspheres. J Nucl Med 2014; 55:1216-8. [DOI: 10.2967/jnumed.114.138198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Chiesa C, Lambert B, Maccauro M, Ezziddin S, Ahmadzadehfar H, Dieudonné A, Cremonesi M, Konijnenberg M, Lassmann M, Pettinato C, Strigari L, Vanderlinden B, Crippa F, Flamen P, Garin E. Pretreatment Dosimetry in HCC Radioembolization with (90)Y Glass Microspheres Cannot Be Invalidated with a Bare Visual Evaluation of (99m)Tc-MAA Uptake of Colorectal Metastases Treated with Resin Microspheres. J Nucl Med 2014; 55:1215-6. [PMID: 24898027 DOI: 10.2967/jnumed.113.129361] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
- Carlo Chiesa
- Foundation IRCCS Istituto Nazionale Tumori Via Giacomo Venezian 1 I-20133 Milan, Italy E-mail:
| | - Bieke Lambert
- Foundation IRCCS Istituto Nazionale Tumori Via Giacomo Venezian 1 I-20133 Milan, Italy E-mail:
| | - Marco Maccauro
- Foundation IRCCS Istituto Nazionale Tumori Via Giacomo Venezian 1 I-20133 Milan, Italy E-mail:
| | - Samer Ezziddin
- Foundation IRCCS Istituto Nazionale Tumori Via Giacomo Venezian 1 I-20133 Milan, Italy E-mail:
| | - Hojjat Ahmadzadehfar
- Foundation IRCCS Istituto Nazionale Tumori Via Giacomo Venezian 1 I-20133 Milan, Italy E-mail:
| | - Arnaud Dieudonné
- Foundation IRCCS Istituto Nazionale Tumori Via Giacomo Venezian 1 I-20133 Milan, Italy E-mail:
| | - Marta Cremonesi
- Foundation IRCCS Istituto Nazionale Tumori Via Giacomo Venezian 1 I-20133 Milan, Italy E-mail:
| | - Mark Konijnenberg
- Foundation IRCCS Istituto Nazionale Tumori Via Giacomo Venezian 1 I-20133 Milan, Italy E-mail:
| | - Michael Lassmann
- Foundation IRCCS Istituto Nazionale Tumori Via Giacomo Venezian 1 I-20133 Milan, Italy E-mail:
| | - Cinzia Pettinato
- Foundation IRCCS Istituto Nazionale Tumori Via Giacomo Venezian 1 I-20133 Milan, Italy E-mail:
| | - Lidia Strigari
- Foundation IRCCS Istituto Nazionale Tumori Via Giacomo Venezian 1 I-20133 Milan, Italy E-mail:
| | - Bruno Vanderlinden
- Foundation IRCCS Istituto Nazionale Tumori Via Giacomo Venezian 1 I-20133 Milan, Italy E-mail:
| | - Flavio Crippa
- Foundation IRCCS Istituto Nazionale Tumori Via Giacomo Venezian 1 I-20133 Milan, Italy E-mail:
| | - Patrick Flamen
- Foundation IRCCS Istituto Nazionale Tumori Via Giacomo Venezian 1 I-20133 Milan, Italy E-mail:
| | - Etienne Garin
- Foundation IRCCS Istituto Nazionale Tumori Via Giacomo Venezian 1 I-20133 Milan, Italy E-mail:
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Technical Considerations of Phosphorous-32 Bremsstrahlung SPECT Imaging after Radioembolization of Hepatic Tumors: A Clinical Assessment with a Review of Imaging Parameters. Radiol Res Pract 2014; 2014:407158. [PMID: 24800073 PMCID: PMC3985385 DOI: 10.1155/2014/407158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Revised: 02/15/2014] [Accepted: 02/19/2014] [Indexed: 12/12/2022] Open
Abstract
Background. Bremsstrahlung (BS) imaging during radioembolization (RE) confirms the deposition of radiotracer in hepatic/extrahepatic tumors. The aim of this study is to demonstrate (32)P images and to optimize the imaging parameters. Materials and Methods. Thirty-nine patients with variable types of hepatic tumors, treated with the intra-arterial injection of (32)P, were included. All patients underwent BS SPECT imaging 24-72 h after tracer administration, using low energy high resolution (LEHR) (18 patients) or medium energy general purpose (MEGP) (21 patients) collimators. A grading scale from 1 to 4 was used to express the compatibility of the (32)P images with those obtained from CT/MRI. Results. Although the image quality obtained with the MEGP collimator was visually and quantitatively better than with the LEHR (76% concordance score versus 71%, resp.), there was no statistically significant difference between them. Conclusion. The MEGP collimator is the first choice for BS SPECT imaging. However, if the collimator change is time consuming (as in a busy center) or an MEGP collimator is not available, the LEHR collimator could be practical with acceptable images, especially in a SPECT study. In addition, BS imaging is a useful method to confirm the proper distribution of radiotherapeutic agents and has good correlation with anatomical findings.
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Buyssens P, Gardin I, Ruan S. Eikonal based region growing for superpixels generation: Application to semi-supervised real time organ segmentation in CT images. Ing Rech Biomed 2014. [DOI: 10.1016/j.irbm.2013.12.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ceelen F, Theisen D, de Albéniz XG, Auernhammer CJ, Haug AR, D'Anastasi M, Paprottka PM, Rist C, Reiser MF, Sommer WH. Towards new response criteria in neuroendocrine tumors: which changes in MRI parameters are associated with longer progression-free survival after radioembolization of liver metastases? J Magn Reson Imaging 2014; 41:361-8. [PMID: 24446275 DOI: 10.1002/jmri.24569] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2013] [Accepted: 12/28/2013] [Indexed: 12/14/2022] Open
Abstract
PURPOSE To evaluate the association of therapy-related changes in imaging parameters with progression-free survival (PFS) of patients with unresectable liver metastases from neuroendocrine tumors (NETLMs). MATERIALS AND METHODS Forty-five radioembolized patients (median age: 62 years; range: 43-75) received a pre- and 3 months posttherapeutic magnetic resonance imaging (MRI) examination. The latter were evaluated for tumor size, arterial enhancement, and necrosis pattern. Influences of therapy-related changes on PFS were analyzed. Statistical analysis included Student's t-test, Wilcoxon test, Cox regression analysis, and Kaplan-Meier curves. RESULTS The median percentage decrease in sum of diameters was 9.7% (range: 43.9% decrease to 15.4% increase). Twenty-one patients (47%) showed increased necrosis. Three parameters were associated with significantly longer PFS: a decrease of diameter (hazard ratio [HR]: 0.206; 95% confidence interval [CI]: 0.058-0.725; P = 0.0139), a decrease in tumor arterial enhancement (HR: 0.143; 95% CI: 0.029-0.696; P = 0.0160), and an increase in necrosis after 3 months (HR: 0.321; 95% CI: 0.104-0.990; P = 0.0480). Multivariate analysis revealed that changes in diameter and arterial enhancement have complementary information and are associated independently with long PFS. CONCLUSION A decrease both in sum of diameters and arterial enhancement of metastases, as well as an increase in necrosis, are associated with significantly longer PFS after radioembolization.
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Affiliation(s)
- Felix Ceelen
- Department of Clinical Radiology, University Hospitals-Grosshadern, Ludwig-Maximilians University, Munich, Germany; Interdisciplinary Center of Neuroendocrine Tumours of the GastroEnteroPancreatic System (GEPNET-KUM), University Hospitals-Grosshadern, Ludwig-Maximilians University, Munich, Germany
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Ahmadzadehfar H, Duan H, Haug AR, Walrand S, Hoffmann M. The role of SPECT/CT in radioembolization of liver tumours. Eur J Nucl Med Mol Imaging 2014; 41 Suppl 1:S115-24. [PMID: 24442600 DOI: 10.1007/s00259-013-2675-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Accepted: 12/17/2013] [Indexed: 01/14/2023]
Abstract
Radioembolization (RE) with (90)Y microspheres is a promising catheter-based therapeutic option for patients with unresectable primary and metastatic liver tumours. Its rationale arises from the dual blood supply of liver tissue through the hepatic artery and the portal vein. Metastatic hepatic tumours measuring >3 mm derive 80 - 100 % of their blood supply from the arterial rather than the portal hepatic circulation. Typically, an angiographic evaluation combined with (99m)Tc-macroaggregated albumin ((99m)Tc-MAA) scan precedes therapy to map the tumour feeding vessels as well as to avoid the inadvertent deposition of microspheres in organs other than the liver. Prior to administration of (99m)Tc-MAA, prophylactic coil embolization of the gastroduodenal artery is recommended to avoid extrahepatic deposition of the microspheres. SPECT/CT allows direct correlation of anatomic and functional information in patients with unresectable liver disease. SPECT/CT is recommended to assess intrahepatic distribution as well as extrahepatic gastrointestinal uptake in these patients. Pretherapeutic SPECT/CT is an important component of treatment planning including catheter positioning and dose finding. A post-therapy bremsstrahlung (BS) scan should follow RE to verify the distribution of the administered tracer. BS SPECT/CT imaging enables better localization and definition of intrahepatic and possible extrahepatic sphere distribution and to a certain degree allows posttreatment dosimetry. In this paper we address the usefulness and significance of SPECT/CT in therapy planning and therapy monitoring of RE.
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Prognostic importance of 18F-FDG uptake pattern of hepatocellular cancer patients who received SIRT. Clin Nucl Med 2014; 38:e283-9. [PMID: 23531737 DOI: 10.1097/rlu.0b013e3182867f17] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
PURPOSE The aim of the study was to evaluate the effect of 18F-FDG uptake pattern of liver lesions to treatment response of patients who received yttrium-90 (Y-90) selective internal radiation therapy (SIRT) for hepatocellular cancer (HCC). PATIENTS AND METHODS Nineteen patients (5F, 14M, mean age: 64.5 ± 14.7 years old, range: 57-73 years) who received SIRT treatment in our department for HCC between June 2008 and May 2011 were included in the study. All patients underwent 18F-FDG PET/CT before SIRT for evaluation of disease stage and metabolic activity of liver lesions. Patients were divided into 3 groups according to FDG uptake patterns of primary liver lesions (hypoactive, nonhomogenous, and focal intense). Progression-free survival (PFS) times of each group and patients with hepatic only and hepatic with extrahepatic disease were analyzed. Disease progression criteria were increase in tumor volume, progressive elevation of serum alpha-fetoprotein levels, and detection of extrahepatic metastases. Kaplan-Meier analysis was used for comparison of PFS times. RESULTS The mean treatment dose was calculated as 1.4 ± 1.0 GBq. While liver lesions of 4 patients were hypoactive in pretreatment 18F-FDG PET/CT, liver lesions of 6 and 9 patients had nonhomogenous and intense FDG uptake, respectively. Mean PFS time of patients who had hypoactive liver lesions was 5.25 ± 1.52 months. In patients who had liver lesions with nonhomogenous uptake, mean PFS time was 12.3 ± 2.6 months. Lastly, in patients with intense uptake in liver lesions, PFS time was calculated as 19.8 ± 5.0 months. Difference between each group was statistically significant (P = 0.017). There was no significant difference in the PFS of the patients with limited hepatic disease and patients with extrahepatic involvement. CONCLUSION In patients with unresectable HCC, higher SUVmax lesions unexpectedly had better PFS rates after SIRT, suggesting SIRT has a treatment advantage over other therapeutic options in these patients.
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Abstract
Transarterial radioembolization (TARE) with yttrium 90 microspheres is an increasingly popular therapy for both primary and secondary liver malignancies. TARE entails delivery of β-particle brachytherapy and embolization of the tumor vasculature. The consequent biological sequelae are distinct from those of other transarterial therapies for liver tumors, as reflected in the often baffling post-treatment imaging features. As the clinical use of TARE is increasing, more diverse post-treatment radiological findings are encountered with variable overlap among treatment response, residual disease, reactionary changes and complications. Thus, post-TARE image interpretation is challenging. This review provides a comprehensive description of the different findings seen in post-treatment scans, with the aim of facilitating appropriate radiological interpretation of post-TARE pathologic changes, notwithstanding their existing limitations.
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Affiliation(s)
- Pavel Singh
- Department of Diagnostic Imaging, National University Hospital and Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Gopinathan Anil
- Department of Diagnostic Imaging, National University Hospital and Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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Ezziddin S, Wilhelm K, Fimmers R, Spengler U, Palmedo H, Strunk H, Schild HH, Biersack HJ, Risse J, Ahmadzadehfar H, Habibi E. Survival after 131I-labeled lipiodol therapy for hepatocellular carcinoma. Nuklearmedizin 2014; 53:46-53. [DOI: 10.3413/nukmed-0610-13-07] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Abstract
SummaryThis study investigated the efficacy of 131iod- ine-labeled lipiodol (1311-lipiodol) as a palliative therapy, evaluated overall survival (OS) across Barcelona Clinic Liver Cancer (BCLC) stages, and determined the main prognostic factors influencing OS in patients with hepatocellular carcinoma (HCC). Patients, methods: We retrospectively analyzed 57 (44 men; mean age, 65.7 years; mean activity per session, 1.6 GBq; mean cumulative activity in patients with >1 sessions, 3.9 GBq) HCC patients who underwent 1311-lipiodol therapy. A majority of patients exhibited Child-Pugh class B (53.6%) disease and a good Eastern Cooperative Oncology Group performance status (0-1; 72%). Multinodular disease was observed in 87.7% patients, bilobar disease in 73%, and portal vein occlusion (PVO) in 54%. Furthermore, 21.1% patients were staged as BCLC B and 59.6 % as BCLC C. All patients were followed until death. Results: The median OS was 6.4 months, which varied significantly with disease stage (median OS for BCLC A, B, C, and D was 29.4, 12.0, 4.6, and 2.7 months, respectively; p = 0.009); Child-Pugh score and class; presence of ascites, PVO, or extrahepatic disease; largest lesion size; favourable treatment response; international normalized ratio, baseline albumin and alpha-fetopro- tein levels. Patients with a Child-Pugh A liver disease had a longer OS. Conclusion: Currently, different treatment modalities for HCC include radioembolization, transarterial chemoemboliz- ation, and systemic therapy with sorafenib; however, 1311-lipiodol therapy remains a feasible alternative for patients without a favourable response to other therapies, particularly for patients with Child-Pugh A liver cirrhosis.
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Shcherbinin S, Grimes J, Bator A, Cwikla JB, Celler A. Three-dimensional personalized dosimetry for 188Re liver selective internal radiation therapy based on quantitative post-treatment SPECT studies. Phys Med Biol 2013; 59:119-134. [PMID: 24334821 DOI: 10.1088/0031-9155/59/1/119] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
We demonstrate that accurate patient-specific distributions of microspheres labeled with 188Re and resulting absorbed doses can be obtained from single-photon emission computed tomography (SPECT) studies performed after 188Re selective internal radiation therapy when accurate correction methods are employed in image reconstruction. Our quantitative image reconstruction algorithm includes corrections for attenuation, resolution degradations and scatter as well as a window-based compensation for contamination. The procedure has been validated using four phantom experiments containing an 18 ml cylindrical source (82-93 MBq of 188Re activity) simulating a liver tumor. In addition, we applied our approach to post-therapy SPECT studies of ten patients with progressive primary or metastatic liver carcinomas. Our quantitative algorithm accurately (within 9%) recovered 188Re activity from four phantom experiments. In addition, for two patients that received three scans, deviations remained consistent between the measured and the reconstructed activities that were determined from studies with differing severity of the dead-time effect. The analysis of absorbed doses for patient studies allowed us to hypothesize that D90 (the minimum dose received by 90% of the tumor volume) may be a reliable metric relating therapy outcomes to the calculated doses. Among several considered metrics, only D90 showed statistically significant correlation with the overall survival.
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Affiliation(s)
- S Shcherbinin
- Medical Imaging Research Group, University of British Columbia, 366-828 West 10th Avenue, Vancouver BC, V5Z 1M9, Canada
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Gandhi SJ, Babu S, Subramanyam P, Shanmuga Sundaram P. Tc-99m macro aggregated albumin scintigraphy - indications other than pulmonary embolism: A pictorial essay. Indian J Nucl Med 2013; 28:152-62. [PMID: 24250023 PMCID: PMC3822414 DOI: 10.4103/0972-3919.119546] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
INTRODUCTION Tc-99m macro aggregated albumin (MAA) is synonymous for lung perfusion scintigraphy and is part of the study in the evaluation of pulmonary thromboembolism. We wanted to highlight the utilities of Tc-99m MAA other than pulmonary embolism as a pictorial assay. MATERIALS AND METHODS Patients referred for Tc-99m MAA scintigraphy under various indications were included in this pictorial essay. Commercially available TechneScan LyoMAA cold kit from Mallinckrodt Medical B.V., Holland was used. Acquisition protocols for different indications are described in this article. Different clinical indications (e.g., pulmonary artery stenosis, hepatopulmonary syndrome, FEV1 calculation in lung surgery planning, selective internal radiation therapy planning, venography for deep venous thrombosis, left to right cardiac shunts, etc.) where Tc-99m MAA scintigraphy was asked for; how it helped in different clinical scenarios and how it can be used clinically is explained with unique and interesting case examples and images. We also reviewed the literature to look for certain remote indications of MAA imaging for the sake of completion like - (shunt scintigraphy, peritoneopleural communication, etc.). CONCLUSION Tc-99m MAA is a very useful radiopharmaceutical, which can be used for many other indications apart from the commonly used indication of lung perfusion scan in pulmonary embolism. It can provide useful clinical information in other indications, which we try to highlight in this article.
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Affiliation(s)
- Sunny J Gandhi
- Department of Nuclear Medicine and PETCT, Amrita Institute of Medical Sciences, Kochi, Kerala, India
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Theysohn JM, Ertle J, Müller S, Schlaak JF, Nensa F, Sipilae S, Bockisch A, Lauenstein TC. Hepatic volume changes after lobar selective internal radiation therapy (SIRT) of hepatocellular carcinoma. Clin Radiol 2013; 69:172-8. [PMID: 24209871 DOI: 10.1016/j.crad.2013.09.009] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 08/16/2013] [Accepted: 09/06/2013] [Indexed: 10/26/2022]
Abstract
AIM To assess volume changes of treated and non-treated liver segments after selective internal radiation therapy (SIRT) in patients with hepatocellular carcinoma (HCC) and compromised hepatic function due to cirrhosis over a time course of 12 months after SIRT. MATERIALS AND METHODS All patients underwent SIRT of the right liver lobe with yttrium 90 (Y-90). Absolute volumes of the right liver lobe (RLV) and left liver lobe (LLV) were assessed using computed tomography (CT) before and 1, 3, 6, 9, and 12 months after SIRT. Changes at follow-up relative to baseline volumes were analysed ("normalized" volumes). Furthermore, the relative volume of the LLV [LLV/(RLV + LLV)] was calculated ("relative" volumes). For statistical analysis p < 0.05 was considered statistically significant. RESULTS Forty-five HCC patients (36 men, nine women, mean age 71.9 years, range 55-90 years) were studied. The mean baseline RLV and LLV reached 1116 ml [95% confidence intervals (CI): 1006-1226 ml] and 601 ml (95% CI: 514-688 ml), respectively. At 6 months following radioembolization, the LLV increased by 30.8% (RLV -33.9%), with the relative LLV increasing from 35% (pre-radioembolization) to 50.5%. RLV further decreased and LLV increased 12 months after SIRT (nRLV -44.9%, nLLV +40.1%, relative LLV 56.5%). All changes were significant. CONCLUSION Constraints of liver function after radioembolization of one liver lobe can be partially compensated through hypertrophy of the contralateral lobe. The rate of volumetric changes is the highest in the first 6 months following radioembolization. The present data can also be the basis to propagate radiation lobectomy for selected patients, simultaneously providing tumour control and future remnant liver hypertrophy before curative hemihepatectomy.
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Affiliation(s)
- J M Theysohn
- Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany.
| | - J Ertle
- Department of Gastroenterology and Hepatology, University Hospital Essen, Essen, Germany
| | - S Müller
- Department of Nuclear Medicine, University Hospital Essen, Essen, Germany
| | - J F Schlaak
- Department of Gastroenterology and Hepatology, University Hospital Essen, Essen, Germany
| | - F Nensa
- Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany
| | - S Sipilae
- Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany
| | - A Bockisch
- Department of Nuclear Medicine, University Hospital Essen, Essen, Germany
| | - T C Lauenstein
- Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany
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Feasibility of temporary protective embolization of normal liver tissue using degradable starch microspheres during radioembolization of liver tumours. Eur J Nucl Med Mol Imaging 2013; 41:231-7. [PMID: 24030669 DOI: 10.1007/s00259-013-2550-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Accepted: 08/14/2013] [Indexed: 01/05/2023]
Abstract
PURPOSE To describe a new approach to protect nontarget healthy liver tissue using degradable starch microspheres (DSM) as a short-term embolizate during radioembolization of liver tumours with (90)Y microspheres. METHODS Between December 2011 and July 2012 radioembolization was performed in 54 patients. Five of these patients (three women, two men; mean age 67 years) underwent protective temporary embolization using DSM (EmboCept® S) of normal liver tissue that could not be excluded from the area treated by radioembolization through catheter repositioning. Clinical symptoms, laboratory findings, preinterventional imaging, and (99m)Tc-MAA and bremsstrahlung SPECT/CT, as well as baseline and follow-up imaging with (18)F-FDG PET/CT and MRI, were evaluated in relation to the technical and clinical success of the protective embolization. RESULTS Temporary embolization of arteries supplying normal liver tissue using DSM was technically successful in all five patients. (99m)Tc-MAA SPECT/CT performed in the first two patients after DSM injection showed no increased pulmonary shunting compared to the MAA test injection without DSM. Bremsstrahlung SPECT/CT after radioembolization demonstrated satisfactory irradiation of the tumour and successful protection of normal liver tissue. There were only mild hepatotoxic effects (grade 1) on laboratory follow-up examinations, and no adverse events associated with DSM embolization or radioembolization were recorded. CONCLUSION Temporary embolization with DSM before radioembolization is feasible and can effectively protect areas of normal liver tissue from irradiation and avoid permanent embolization if other methods such as catheter repositioning are not possible due to the location of the metastases.
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Evaluation of the Response to Selective Internal Radiation Therapy in Patients With Hepatocellular Cancer According to Pretreatment 99mTc-MAA Uptake. Clin Nucl Med 2013; 38:252-5. [DOI: 10.1097/rlu.0b013e31828162e8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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94
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Ulrich G, Dudeck O, Furth C, Ruf J, Grosser OS, Adolf D, Stiebler M, Ricke J, Amthauer H. Predictive Value of Intratumoral 99mTc-Macroaggregated Albumin Uptake in Patients with Colorectal Liver Metastases Scheduled for Radioembolization with 90Y-Microspheres. J Nucl Med 2013; 54:516-22. [DOI: 10.2967/jnumed.112.112508] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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95
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Fahmueller YN, Nagel D, Hoffmann RT, Tatsch K, Jakobs T, Stieber P, Holdenrieder S. Immunogenic cell death biomarkers HMGB1, RAGE, and DNAse indicate response to radioembolization therapy and prognosis in colorectal cancer patients. Int J Cancer 2013; 132:2349-58. [PMID: 23047645 DOI: 10.1002/ijc.27894] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Accepted: 09/10/2012] [Indexed: 12/17/2022]
Abstract
Radioembolization therapy (RE) is an efficient locoregional treatment for liver metastases from colorectal cancer. Serum biomarkers involved in immunogenic cell death are potentially valuable for early predicting therapy response and estimating prognosis. In a prospective observation study, blood samples were taken from 49 consecutive colorectal cancer patients with extensive hepatic metastases before, 24 and 48 hr after RE. Serum levels of high mobility group box 1 (HMGB1), receptor of glycation end products (RAGE) and activity of desoxyribonuclease were compared with response to therapy regularly determined radiologically 3 months after therapy and with overall survival. Serum levels of HMGB1 were increased already 24 hr after RE, while RAGE levels were decreased and DNAse remained unchanged. In radiological staging, 35 patients demonstrated disease progression while 14 patients had stable disease or remission. Serum HMGB1 levels 24 hr after RE were significantly higher in progressive than in nonprogressive patients while for RAGE and DNAse no difference was observed between the response groups. Concerning overall survival, high pretherapeutic (0 hr) and 24 hr levels of HMGB1 were associated with poor outcome. Multivariate analysis including HMGB1, tumor, liver and inflammation markers revealed HMGB1 and CRP as independent prognostic parameters. HMGB1 is a valuable serum biomarker for early estimation of therapy response and prognosis in colorectal cancer patients with liver metastases undergoing RE therapy.
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96
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Theysohn JM, Schlaak JF, Müller S, Ertle J, Schlosser TW, Bockisch A, Lauenstein TC. Selective internal radiation therapy of hepatocellular carcinoma: potential hepatopulmonary shunt reduction after sorafenib administration. J Vasc Interv Radiol 2012; 23:949-52. [PMID: 22720895 DOI: 10.1016/j.jvir.2012.04.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2011] [Revised: 03/09/2012] [Accepted: 04/05/2012] [Indexed: 11/19/2022] Open
Abstract
Sorafenib, a protein kinase inhibitor, is a systemic drug that has been licensed for the treatment of hepatocellular carcinoma (HCC). This retrospective study assessed whether the administration of sorafenib can result in a reduction of the hepatopulmonary shunt (HPS) before selective internal radiation therapy (SIRT). After exclusion from SIRT because of high HPS, computed tomography scan indicated a shunt reduction in seven patients with HCC receiving sorafenib. Repeated measurements revealed HPS reduction (from 26.5% to 7.5% on average), and subsequent SIRT became possible. In conclusion, sorafenib may reduce HPS in patients with advanced HCC in some cases.
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Affiliation(s)
- Jens M Theysohn
- Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Hufelandstrasse 55, 45122 Essen, Germany.
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97
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Hepatic volume changes induced by radioembolization with 90Y resin microspheres. A single-centre study. Eur J Nucl Med Mol Imaging 2012; 40:80-90. [DOI: 10.1007/s00259-012-2253-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Accepted: 09/12/2012] [Indexed: 12/11/2022]
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98
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Ezziddin S, Meyer C, Kahancova S, Haslerud T, Willinek W, Wilhelm K, Biersack HJ, Ahmadzadehfar H. 90Y Radioembolization After Radiation Exposure from Peptide Receptor Radionuclide Therapy. J Nucl Med 2012; 53:1663-9. [DOI: 10.2967/jnumed.112.107482] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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99
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Gaba RC, Lakhoo J. Yttrium-90 microsphere radioembolization for treatment of lung cancer hepatic metastases. Case Rep Oncol 2012; 5:479-86. [PMID: 23109925 PMCID: PMC3457031 DOI: 10.1159/000342706] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Because stage 4 lung cancer is associated with dismal 5-year survival rates, new treatment approaches targeting extrapulmonary disease are necessary. Yttrium-90 microsphere radioembolization is an emerging treatment for metastatic hepatic malignancies that results in high tumor response rates and extended patient survival. To date, application of this therapy toward management of lung cancer hepatic metastases has not been extensively described. Herein, we present 2 cases of effective yttrium-90 radioembolization for treatment of lung cancer hepatic metastases, and emphasize the potential coadjuvant value of this procedure in patients with advanced-stage lung cancer and liver-dominant metastatic disease.
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Affiliation(s)
- Ron C Gaba
- Department of Radiology, University of Illinois Hospital and Health Sciences System, Chicago, Ill., USA
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100
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Burns WR, Edil BH. Neuroendocrine pancreatic tumors: guidelines for management and update. Curr Treat Options Oncol 2012; 13:24-34. [PMID: 22198808 DOI: 10.1007/s11864-011-0172-2] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Pancreatic neuroendocrine tumors (PanNETs) are a diverse group of rare neoplasms. Commonly referred to as islet cell tumors, PanNETs are classified as functional or nonfunctional depending on their production of specific pancreatic endocrine hormones (e.g. insulin, gastrin, glucagon, and others) and association with the resultant clinical syndromes. While most PanNETs are sporadic, syndromic patients, in particular those with multiple endocrine neoplasia type 1 (MEN-1) and von Hippel Lindau (VHL), are at increased risk of developing these tumors. Recent investigations of patients with sporadic and syndromic PanNETs have elucidated critical pathways in tumor development, such as mammalian target of rapamycin (mTOR) signaling and its downstream growth factors such as vascular endothelial growth factor (VEGF). Prognosis ranges from favorable for localized, low-grade neoplasms to poor for advanced, high-grade tumors. Regardless of the stage at presentation, surgery is the first-line therapy for patients with disease amenable to surgical resection. We favor formal pancreatectomy with conventional lymph node sampling for the vast majority of patients, either through open or laparoscopic techniques. Those with insulinomas, however, may be candidates for enucleation. Cytoreductive surgery is also recommended for patients with locoregional recurrences or hepatic metastases. Regional adjuvants such as radiofrequency ablation (RFA), transarterial chemoembolization (TACE), and others are often employed in an attempt to palliate symptoms and prolong survival. Unfortunately, cytotoxic chemotherapy has been largely ineffective in treating patients with PanNETs. The somatostatin analogue octreotide, however, has been effective in palliating symptoms and slowing the progression of disease. Other promising systemic agents, including sunitinib and everolimus, have targeted critical PanNET signaling pathways. In summary, surgery remains the principal therapeutic strategy for patients with PanNETs, but continued research may identify more robust systemic therapies for those with advanced disease.
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Affiliation(s)
- William R Burns
- Department of Surgery, The Johns Hopkins Hospital, Baltimore, MD 21287, USA.
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