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http://dx.doi.org/10.4269/ajtmh.1958.7.84 | DOI Listing |
Radiopharmaceutical therapy (RPT) enhances tumor response to immune checkpoint inhibitors (ICI) in preclinical models, but the effects of different radioisotopes have not been thoroughly compared. To evaluate mechanisms of response to RPT+ICI, we used NM600, an alkylphosphocholine selectively taken up by most tumors. Effects of Y-, Lu-, and Ac-NM600 + ICIs were compared in syngeneic murine models, B78 melanoma (poorly immunogenic) and MC38 colorectal cancer (immunogenic).
View Article and Find Full Text PDFBrachytherapy
January 2025
Department of Genitourinary Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX.
Background: To determine outcomes of MRI-assisted radiosurgery (MARS) for salvage brachytherapy using the radioisotope Pd after various upfront treatments including surgery, external beam radiotherapy, and brachytherapy.
Methods: We retrospectively reviewed data for patients who underwent salvage MARS for intraprostatic lesions or prostate bed recurrences from 2016 to 2022. Biochemical recurrence, prostate cancer-specific, and overall survival, and the cumulative incidences of toxicities, were determined by Kaplan-Meier estimates.
Appl Radiat Isot
December 2024
National Centre for Physics, Quaid-i-Azam University Campus Islamabad, Pakistan.
Cd (T = 6.5 h) and Cd (T = 461.9 d) are promising non-standard gamma-emitting radionuclides with significant potential for SPECT use.
View Article and Find Full Text PDFInt J Comput Assist Radiol Surg
December 2024
Graduate School of Science and Technology, Hirosaki University, Hirosaki, Japan.
Purpose: We are developing a three-dimensional X-ray fluorescence computed tomography (3D XFCT) system using non-radioactive-labeled compounds for preclinical studies as a new modality that provides images of biological functions. Improvements in image quality and detection limits are required for the in vivo imaging. The aim of this study was to improve the quality of XFCT images by applying a deep image prior (DIP), which is a type of convolutional neural network, to projection images as a pre-denoising method, and then compare with DIP post-denoising.
View Article and Find Full Text PDFFront Pharmacol
December 2024
Department of Nuclear Medicine, The First Affiliated Hospital, Jinan University, Guangzhou, China.
Objective: To optimize the automated radiosynthesis of the purinergic ion channel receptor 7 (P2X7R) imaging agent F-JNJ64413739 and evaluate its potential for brain imaging in osteoporotic model rats.
Methods: A more electron-deficient nitropyridine was employed as the labeling precursor to facilitate the F-labeling. The radiosynthesis was conducted on an AllinOne synthesis module, and followed by purification via high-performance liquid chromatography (HPLC).
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