Post-Therapeutic Dosimetry of Metastatic Castration-Resistant Prostate Cancer With 177Lu-PSMA: Experiences From Two University-Based Hospitals in Thailand.
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引用次数: 0
Abstract
Objective: 177Lu-PSMA radioligand therapy (RLT) is increasingly used to treat metastatic castration-resistant prostate cancer (mCRPC). Posttreatment dosimetry is essential for assessing normal organ absorbed doses. Therefore, this study aims to evaluate normal organs dosimetry in mCRPC patients undergoing 177Lu-PSMA-RLT from two university-based hospitals in Thailand.
Methods: We retrospectively analyzed 61 treatment cycles in 36 patients who underwent posttreatment whole-body planar imaging at three time points (1, 24, and 168 h postadministration). Absorbed doses were computed using organ based MIRD (Medical Internal Radiation Dosimetry) method with OLINDA/EXM v.2.2 in Hermes dosimetry software.
Results: The median treated activity was 5.79 GBq (range 5.00-7.29 GBq). Normal organ absorbed doses, from lowest to highest, were red marrow (0.03 ± 0.03 Gy/GBq), total body (0.04 ± 0.03 Gy/GBq), liver (0.13 ± 0.33 Gy/GBq), salivary glands (0.65 ± 0.42 Gy/GBq), and kidneys (0.72 ± 0.36 Gy/GBq).
Conclusion: Absorbed doses to normal organs remained within an acceptable range and not exceed the tolerance limits.
期刊介绍:
Asia–Pacific Journal of Clinical Oncology is a multidisciplinary journal of oncology that aims to be a forum for facilitating collaboration and exchanging information on what is happening in different countries of the Asia–Pacific region in relation to cancer treatment and care. The Journal is ideally positioned to receive publications that deal with diversity in cancer behavior, management and outcome related to ethnic, cultural, economic and other differences between populations. In addition to original articles, the Journal publishes reviews, editorials, letters to the Editor and short communications. Case reports are generally not considered for publication, only exceptional papers in which Editors find extraordinary oncological value may be considered for review. The Journal encourages clinical studies, particularly prospectively designed clinical trials.