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Vergnaud L, Robert A, Baudier T, Parisse-Di Martino S, Boissard P, Rit S, Badel JN, Sarrut D. Dosimetric impact of 3D motion-compensated SPECT reconstruction for SIRT planning. EJNMMI Phys 2023; 10:8. [PMID: 36749446 PMCID: PMC9905464 DOI: 10.1186/s40658-023-00525-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 01/11/2023] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND In selective internal radiation therapy, 99mTc SPECT images are used to optimize patient treatment planning, but they are affected by respiratory motion. In this study, we evaluated on patient data the dosimetric impact of motion-compensated SPECT reconstruction on several volumes of interest (VOI), on the tumor-to-normal liver (TN) ratio and on the activity to be injected. METHODS Twenty-nine patients with liver cancer or hepatic metastases treated by radioembolization were included in this study. The biodistribution of 90Y is assumed to be the same as that of 99mTc when predictive dosimetry is implemented. A total of 31 99mTc SPECT images were acquired and reconstructed with two methods: conventional OSEM (3D) and motion-compensated OSEM (3Dcomp). Seven VOI (liver, lungs, tumors, perfused liver, hepatic reserve, healthy perfused liver and healthy liver) were delineated on the CT or obtained by thresholding SPECT images followed by Boolean operations. Absorbed doses were calculated for each reconstruction using Monte Carlo simulations. Percentages of dose difference (PDD) between 3Dcomp and 3D reconstructions were estimated as well as the relative differences for TN ratio and activities to be injected. The amplitude of movement was determined with local rigid registration of the liver between the 3Dcomp reconstructions of the extreme phases of breathing. RESULTS The mean amplitude of the liver was 9.5 ± 2.7 mm. Medians of PDD were closed to zero for all VOI except for lungs (6.4%) which means that the motion compensation overestimates the absorbed dose to the lungs compared to the 3D reconstruction. The smallest lesions had higher PDD than the largest ones. Between 3D and 3Dcomp reconstructions, means of differences in lung dose and TN ratio were not statistically significant, but in some cases these differences exceed 1 Gy (4/31) and 8% (2/31). The absolute differences in activity were on average 3.1% ± 5.1% and can reach 22.8%. CONCLUSION The correction of respiratory motion mainly impacts the lung and tumor doses but only for some patients. The largest dose differences are observed for the smallest lesions.
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Affiliation(s)
- Laure Vergnaud
- CREATIS; CNRS UMR 5220; INSERM U 1044; Université de Lyon; INSA-Lyon, Université Lyon 1, Lyon, France. .,Centre de Lutte Contre Le Cancer Léon Bérard, Lyon, France.
| | - Antoine Robert
- grid.7849.20000 0001 2150 7757CREATIS; CNRS UMR 5220; INSERM U 1044; Université de Lyon; INSA-Lyon, Université Lyon 1, Lyon, France
| | - Thomas Baudier
- grid.7849.20000 0001 2150 7757CREATIS; CNRS UMR 5220; INSERM U 1044; Université de Lyon; INSA-Lyon, Université Lyon 1, Lyon, France ,grid.418116.b0000 0001 0200 3174Centre de Lutte Contre Le Cancer Léon Bérard, Lyon, France
| | | | - Philippe Boissard
- grid.418116.b0000 0001 0200 3174Centre de Lutte Contre Le Cancer Léon Bérard, Lyon, France
| | - Simon Rit
- grid.7849.20000 0001 2150 7757CREATIS; CNRS UMR 5220; INSERM U 1044; Université de Lyon; INSA-Lyon, Université Lyon 1, Lyon, France
| | - Jean-Noël Badel
- grid.418116.b0000 0001 0200 3174Centre de Lutte Contre Le Cancer Léon Bérard, Lyon, France
| | - David Sarrut
- grid.7849.20000 0001 2150 7757CREATIS; CNRS UMR 5220; INSERM U 1044; Université de Lyon; INSA-Lyon, Université Lyon 1, Lyon, France ,grid.418116.b0000 0001 0200 3174Centre de Lutte Contre Le Cancer Léon Bérard, Lyon, France
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Wu R, Gogineni K, Meisel J, Szabo S, Thirunavu M, Friend S, Bercu Z, Sethi I, Natarajan N, Switchenko J, Levy J, Abdalla E, Weakland L, Kalinsky K, Kokabi N. Study Protocol: Efficacy and Safety of Radioembolization (REM) as an Early Modality (EM) Therapy for Metastatic Breast Cancer (BR) to the Liver with Y90 (REMEMBR Y90). Cardiovasc Intervent Radiol 2022; 45:1725-1734. [PMID: 36008574 DOI: 10.1007/s00270-022-03254-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 08/09/2022] [Indexed: 11/27/2022]
Abstract
PURPOSE The primary objective of the REMEMBR Y90 study is to evaluate the efficacy of Yttrium-90 (Y90) radioembolization in patients with breast cancer metastases to the liver as a 2nd or 3rd line treatment option with systemic therapy by assessing liver-specific and overall progression-free survival. Secondary objectives include quality of life, overall survival benefit, and toxicity in relation to patients' tumor biology. MATERIALS AND METHODS This trial is a multi-center, prospective, Phase 2, open-label, IRB-approved, randomized control trial in the final phases of activation. Eligible patients include those over 18 years of age with metastatic breast cancer to the liver with liver-only or liver-dominant disease, and history of tumor progression on 1-2 lines of chemotherapy. 60 patients will be randomized to radioembolization with chemotherapy versus chemotherapy alone. Permissible regimens include capecitabine, eribulin, vinorelbine, and gemcitabine within 2 weeks of enrollment for every patient. Patients receiving radioembolization will receive lobar or segmental treatment within 1-6 weeks of enrollment depending on their lesion. After final radioembolization, patients will receive clinical and imaging follow-up every 12-16 weeks for two years, including contrast-enhanced computed tomography or magnetic resonance imaging of the abdomen and whole-body positron emission tomography/computed tomography. DISCUSSION This study seeks to elucidate the clinical benefit and toxicity of Y90 in patients with metastatic breast cancer to the liver who are receiving minimal chemotherapy. Given previous data, it is anticipated that the use of Y90 and chemotherapy earlier in the metastatic disease course would improve survival outcomes and reduce toxicity. LEVEL OF EVIDENCE Level 1b, Randomized Controlled Trial. TRIAL REGISTRATION NUMBER NCT05315687 on clinicaltrials.gov.
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Affiliation(s)
- Richard Wu
- School of Medicine, Emory University, Atlanta, GA, USA
| | - Keerthi Gogineni
- Department of Hematology and Medical Oncology, Emory University, Atlanta, GA, USA
| | - Jane Meisel
- Department of Hematology and Medical Oncology, Emory University, Atlanta, GA, USA
| | - Stephen Szabo
- Department of Hematology and Medical Oncology, Emory University, Atlanta, GA, USA
| | - Meenakshi Thirunavu
- Department of Hematology and Medical Oncology, Emory University, Atlanta, GA, USA
| | - Sarah Friend
- Department of Hematology and Medical Oncology, Emory University, Atlanta, GA, USA
| | - Zachary Bercu
- Division of Interventional Radiology and Image Guided Medicine, Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA, USA
| | - Ila Sethi
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA, USA
| | - Neela Natarajan
- Department of Hematology and Medical Oncology, Emory University, Atlanta, GA, USA
| | - Jeffrey Switchenko
- Department of Biostatistics and Bioinformatics, Emory University, Atlanta, GA, USA
| | - Jason Levy
- Northside Hospital Cancer Institute, Atlanta, GA, USA
| | - Eddie Abdalla
- Northside Hospital Cancer Institute, Atlanta, GA, USA
| | | | - Kevin Kalinsky
- Department of Hematology and Medical Oncology, Emory University, Atlanta, GA, USA
| | - Nima Kokabi
- Division of Interventional Radiology and Image Guided Medicine, Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA, USA.
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