In this study, (123)I-FP-CIT biodistribution and dosimetry was determined in 10 adult male patients using planar gamma camera imaging alone or in combination with single photon emission computed tomography /X-ray computed tomography (SPECT/CT) imaging. Dosimetric assessment using planar plus SPECT/CT imaging resulted in significantly different estimates of organ-absorbed doses compared to estimates based on planar imaging alone. We conclude that the use of complementary SPECT/CT measurements in biodistribution studies is valuable for determining the organ doses more accurately.
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http://dx.doi.org/10.1016/j.apradiso.2013.09.006 | DOI Listing |
Radiol Clin North Am
March 2025
Department of Medicine, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-8558, USA; Department of Pediatrics, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-8558, USA. Electronic address:
Pulmonary vascular diseases, particularly when accompanied by pulmonary hypertension, are complex disorders often requiring multimodal imaging for diagnosis and monitoring. Echocardiography is the primary screening tool for pulmonary hypertension, while cardiac MR imaging (CMR) is used for more detailed characterization and risk stratification in right ventricular failure. Chest computed tomography (CT) is used to detect vascular anomalies and parenchymal lung diseases.
View Article and Find Full Text PDFPharmaceutics
January 2025
Laboratory of Nuclear Medicine (LIM-43), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 05403-911, SP, Brazil.
Background/objectives: Dithiocarbazates (DTCs) and their metal complexes have been studied regarding their property as anticancer activities. In this work, using S-benzyl-5-hydroxy-3-methyl-5-phenyl-4,5-dihydro-1H-pirazol-1-carbodithionate (Hbdtc), we prepared [ReO(bdtc)(Hbdtc)] and [[Tc]TcO(bdtc)(Hbdtc)] complexes for tumor uptake and animal biodistribution studies.
Methods: Re complex was prepared by a reaction of H2bdtc and (NBu)[ReOCl], the final product was characterized by IR, H NMR, CHN, and MS-ESI.
Eur J Nucl Med Mol Imaging
January 2025
Radiopharmaceuticals Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India.
Purpose: Enhancing therapeutic effectiveness is crucial for translating anticancer nanomedicines from laboratory to clinical settings. In this study, we have developed radioactive rhenium oxide nanoparticles encapsulated in human serum albumin ([Re]ReO-HSA NPs) for concurrent radiotherapy (RT) and photothermal therapy (PTT), aiming to optimize treatment outcomes.
Methods: [Re]ReO-HSA NPs were synthesized by a controlled reduction of ReO in HSA medium and extensively characterized.
J Stomatol Oral Maxillofac Surg
January 2025
Department of Oral & Maxillofacial Surgery, the Affiliated Hospital of Qingdao University, Shandong Province, Qingdao 266000, China; School of Stomatology, Qingdao University, Shandong Province, Qingdao 266000, China. Electronic address:
Objective: The focus of this study was to assess the diagnostic effectiveness of Tc-MDP single-photon emission computed tomography/computed tomography (SPECT/CT) in pinpointing medication-related osteonecrosis of the jaw (MRONJ).
Methods: We gathered a total of 39 patients who were suspected of having MRONJ and displayed radionuclide concentration in the jaws on whole-body bone scans. These patients were subjected to simultaneous SPECT/CT fusion imaging of the jaws during delayed imaging.
Phys Med Biol
January 2025
Institute of Biomedical Engineering, Shenzhen Bay Laboratory, Guangqiao Load, Shenzhen, 518132, CHINA.
To develop and validate a novel multidimensional readout method that significantly reduces the number of readout channels in PET detectors while maintaining high spatial and energy performance. Approach: We arranged a 3×3×4 SiPM array in multiple dimensions and employed row/column/layer summation with a resistor-based splitting circuit. We then applied denoising methods to enhance the peak-to-valley ratio in the decoding map, ensuring accurate crystal-position determination.
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