Fundamental study on improving the quality of X-ray fluorescence computed tomography images by applying deep image prior to projection images as a pre-denoising method.

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.

Primary Central Nervous System Vasculitis (PCNSV): A Case Report Emphasizing Diagnostic Precision and Therapeutic Approaches.

This report presents a case of primary central nervous system vasculitis (PCNSV), emphasizing the need for precise diagnosis and individualized treatment. PCNSV is a rare inflammatory condition confined to the central nervous system (CNS) that affects small- to medium-sized vessels and can cause severe neurological damage if left untreated. A 73-year-old woman with no previous medical history presented with rapidly progressive right-sided hemiparesis and cognitive impairment.

Extracellular ATP Release Triggered by I-Trastuzumab Mitigates Radiation-Induced Reduction in Cell Viability through the P2Y Receptor in SKOV3 Cells.

Intracellular ATP is released outside cells by various stimuli and is involved in cytoprotection by activating purinergic receptors. However, it remains unclear whether targeted radionuclide therapy induces extracellular ATP release. Here, we prepared I-labeled trastuzumab (I-trastuzumab) and examined extracellular ATP release and its roles in I-trastuzumab's growth inhibitory effects.