A5033843306- Advanced X-ray and CT Imaging
- Radiation Dose and Imaging
- Medical Imaging Techniques and Applications
- Advanced Radiotherapy Techniques
- Digital Radiography and Breast Imaging
- Nuclear Physics and Applications
- Radiation Therapy and Dosimetry
- Radiation Shielding Materials Analysis
- Protein Structure and Dynamics
- RNA and protein synthesis mechanisms
- Electrical and Bioimpedance Tomography
- CCD and CMOS Imaging Sensors
- HIV Research and Treatment
- Dental Radiography and Imaging
- Bone health and osteoporosis research
- Hemodynamic Monitoring and Therapy
- X-ray Spectroscopy and Fluorescence Analysis
- Radioactive contamination and transfer
- Radioactivity and Radon Measurements
Kanazawa University
2019-2024
Kanazawa Medical University
2019-2024
Kyoto University
1973-1996
Abstract Objective. The purpose of this study is to propose a novel blurring correction method that enables accurate quantitative analysis the object edge when using energy-resolving photon counting detectors (ERPCDs). Although ERPCDs have ability generate various techniques, such as derivations effective atomic number ( Z eff ) and bone mineral density values, at in these images, information cannot be obtained. This because image prevents gathering primary x-ray attenuation information....
Energy-resolving photon counting detectors (ERPCDs) used for medical X-ray diagnosis have the potential to extract quantitative information concerning various organs. Previously, we proposed an analysis procedure determine effective atomic number (Z<sub>eff</sub>), but parameter optimization is required. The purpose of this study develop imaging simulator and derive optimal conditions. First, created taking into consideration following three elements: (1) attenuation in objects, (2) detector...
Abstract The eye lens is a sensitive organ of which an x‐ray exposure dose should be managed during interventional radiology (IVR). In the actual situations, exposed to scattered x‐rays; they have different from standard energies are used for general calibration dosimeter. To perform precise measurement, energy dependence dosimeter properly accounted when calibrating vendor supplies factor using 80‐kV diagnostic x‐rays under free‐air condition. However, whether it possible use this evaluate...
Purpose We aimed to develop a disposable rectum dosimeter and demonstrate its ability measure exposure dose the during brachytherapy for cervical cancer treatment using high‐dose rate 192 Ir. Our measures with an optically stimulated luminescence (OSL) sheet which was furled catheter. The catheter we used is 6 mm in diameter; therefore, it much less invasive than other dosimeters. developed this study has characteristics of being inexpensive disposable. It also easy‐to‐use detector that can...
Abstract Background Many healthcare institutions have guidelines concerning the usage of protective procedures, and various x‐ray shields been used to reduce unwanted radiation exposure medical staff patients when using x‐rays. Most are in form sheets lack elasticity, which limits their effectiveness shielding areas with movement, such as thyroid. To overcome this limitation, we developed an innovative elastic shield. Purpose The purpose study is explain methodology for developing evaluating...
Currently, energy resolving photon counting detectors (ERPCD) are the focus of attention as a promising technique for material identification based on analysis X-ray energies. To accomplish highly accurate identification, consideration response multi-pixel-type ERPCD is important. This because detector distorts initial information which strongly related to such effective atomic number (Z <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">eff</sub>...
Energy Resolving Photon Counting Detectors (ERPCD) are attracting attention as novel detectors having the potential to generate functional images. Since ERPCD can detect individual X-ray photons with energy discrimination, differences in attenuations due different energies be analyzed. In previous studies, algorithms for determining effective atomic number (Z <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">eff</inf> ), soft-tissue and bone...
Energy Resolving Photon Counting Detectors (ERPCD) have been developed as a medical X-ray imaging application. The ERPCD can analyze energy information of measured X-rays. There is the possibility that quantitative an object such effective atomic number (Z <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">eff</sub> ) be derived by analyzing In order to realize accurate Z identification, it necessary consider effect secondary-produced radiations...
Lethal effects of thermal neutrons were compared with those 60Co-γ-rays on the two types Amoeba proteus. D37 doses against γ-rays 2.5×105 (M-type) and 7.2×105 rads (P-type), for 9.1 11.7×1013 n. cm-2 (total flux) respectively. Additions AET, D2O or boron failed to increase decrease lethal neutrons. The actions by must arise nuclear reaction, namely, 31P (n, γ) 32P DNA strands. When amoebae irradiated pre-γ-irradiated status, markedly enhanced (γ-n effect).
X-ray examinations performed in medical and industrial fields are based on qualitative evaluation. There is the possibility to create a new diagnostic method using quantitative images produced with an energy resolving photon-counting detector (ERPCD). Because most of objects targeted for examination composed soft-tissue bone, it may be possible perform analysis if corresponding can extracted. This study aims develop algorithm generating which provide information ERPCD. Previously, we have...