A5081253979- Medical Imaging Techniques and Applications
- Radiomics and Machine Learning in Medical Imaging
- Radiopharmaceutical Chemistry and Applications
- Advanced MRI Techniques and Applications
- Thyroid Cancer Diagnosis and Treatment
- Advanced X-ray and CT Imaging
- MRI in cancer diagnosis
- Lung Cancer Diagnosis and Treatment
- Radiation Dose and Imaging
- Advanced Radiotherapy Techniques
- Cardiac Imaging and Diagnostics
- Medical Imaging and Pathology Studies
- Lung Cancer Treatments and Mutations
- Neuroendocrine Tumor Research Advances
- Head and Neck Cancer Studies
- Cancer, Hypoxia, and Metabolism
- Lymphoma Diagnosis and Treatment
- Endometrial and Cervical Cancer Treatments
- Glioma Diagnosis and Treatment
- Sarcoidosis and Beryllium Toxicity Research
- Neurological disorders and treatments
- Cancer Treatment and Pharmacology
- Salivary Gland Tumors Diagnosis and Treatment
- Adrenal and Paraganglionic Tumors
- Prostate Cancer Treatment and Research
Kyushu University
2016-2025
Department of Medical Sciences
2024
Kyushu University Hospital
2013-2023
Institute of Clinical Research
2017-2021
Fukuoka University Hospital
2015-2019
Shimadzu (Japan)
2017
Toyohashi University of Technology
2014
Shizuoka Institute of Science and Technology
2014
Sony Computer Science Laboratories
2014
Johns Hopkins University
2006-2011
Autoimmune pancreatitis: CT and MR characteristics.H Irie, H Honda, S Baba, T Kuroiwa, K Yoshimitsu, Tajima, M Jimi, Sumii MasudaAudio Available | Share
The aim of this study was to investigate the effects point-spread function (PSF) and time-of-flight (TOF) on improving <sup>18</sup>F-FDG PET/CT images in relation reconstruction parameters noise-equivalent counts (NEC). <b>Methods:</b> This consisted a phantom retrospective analysis 39 consecutive patients who underwent clinical PET/CT. body National Electrical Manufacturers Association International Electrotechnical Commission with 10-mm-diameter sphere filled an solution 4:1 radioactivity...
Brown adipose tissue (BAT) densities assessed as CT Hounsfield units (HUs) were evaluated in a rodent model and patients to determine whether HUs changed relation BAT activity.Serial (18)F-FDG PET/CT was performed on rats under both room temperature control conditions after 4 h of cold-stimulation, which is known activate BAT. The maximum standardized uptake values measured, tissues examined the laboratory. Image records from cancer who underwent reviewed, 23 identified displayed high low...
In oncology, the apparent diffusion coefficient (ADC) measured by diffusion-weighted MR imaging (DWI) and standardized uptake value (SUV) from <sup>18</sup>F-FDG PET have similar clinical applications. The purpose of this study was to assess correlation between ADC SUV compare their potential in diagnosis prediction prognosis breast tumors. <b>Methods:</b> Seventy-nine female patients (age range, 19–69 y; average, 49.1 y) with 83 pathologically proven tumors were recruited. diagnoses...
Abstract Programmed cell death‐1 ( PD ‐1) and programmed death‐ligand 1 ‐L1) have been identified as novel targets of immunotherapy lung cancer. In present study, we evaluated the metabolic characteristics cancer by using 18 F‐fluorodeoxyglucose positron emission tomography/computed tomography F‐ FDG PET / CT ) with regard to ‐L1 protein expression. expression was immunohistochemistry antibody clone SP 142 in 579 surgically resected primary patients. Cases less than 5% tumor membrane...
To retrospectively determine the incremental diagnostic value of adding single photon emission computed tomography/computed tomography (SPECT/CT) to whole-body scintigraphy with iodine 131 ((131)I) compared alone after radioiodine therapy in patients well-differentiated thyroid carcinoma.This retrospective study was institutional review board approved; written informed consent waived. The included 147 (94 female, 53 male patients; mean age, 51 years) carcinoma treated between October 2009...
We evaluated the prognostic value of fluorine-18 fluorodeoxyglucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) in hepatocellular carcinoma (HCC). Their association with programmed death ligand 1 (PD-L1) expression and vascular formation was further investigated. In this retrospective study, using a database 418 patients who had undergone 18F-FDG PET/CT before hepatic resection for HCC, immunohistochemical staining PD-L1, clusters differentiation (CD) 8, CD68, CD34...
Background While current guidelines require lung ventilation-perfusion (V/Q) scanning as the first step to diagnose chronic pulmonary embolism in hypertension (PH), its use may be limited by low availability and/or exposure ionizing radiation. Purpose To compare performance of dynamic chest radiography (DCR) and V/Q for detection thromboembolic PH (CTEPH). Materials Methods Patients with who underwent DCR supine position from December 2019 July 2021 were retrospectively screened. The...
Our goal was to estimate and compare across different readers the reproducibility of <sup>18</sup>F-FDG PET standardized uptake value (SUV) CT size measurements, changes in those malignant tumors before after therapy. <b>Methods:</b> Fifty-two 25 patients were evaluated on PET/CT scans. Maximum SUVs (SUV<sub>bw</sub> max) measurements determined for each tumor independently pre- posttreatment scans by 8 (4 PET, 4 CT) using routine nonautomated clinical methods. Percentage SUV<sub>bw</sub>...
This study evaluated the effect of various beta-adrenergic agonists on (18)F-FDG uptake in brown adipose tissue (BAT) rats using ex vivo biodistribution studies.Caffeine (10 mg/kg body weight, n = 4), ephedrine (5 nicotine (0.8 9), or a mixture and weight 5 respectively, 9) was injected into peritoneal cavity female Lewis 30 min before intravenous injection. One hour after injection (18)F-FDG, animals were sacrificed, BAT, other major organs, blood extracted. The results compared with...
Abstract Objective The aim of this study was to evaluate the effect point spread function (PSF) and time flight (TOF) on PET/CT images overweight patients in relation iteration number acquisition time. Methods This consisted a phantom clinical study. NEMA IEC body 40 cm diameter large (LG phantom) simulating an patient were used Both phantoms filled with 18 F solution sphere background ratio 4:1. PET data reconstructed baseline ordered-subsets expectation maximization (OSEM) algorithm, OSEM...
Purpose To evaluate the diagnostic performance of intravoxel incoherent motion (IVIM) MR imaging and 18 F‐fluorodeoxyglucose positron emission tomography (FDG‐PET) in differentiating primary central nervous system lymphoma (PCNSL) from glioblastoma multiforme (GBM). Materials Methods Fifty patients, 17 with PCNSL 33 GBM, were retrospectively studied. From 3 Tesla IVIM data, perfusion fraction (f) diffusion coefficient (D) obtained. In addition, maximum standard uptake value (SUV max ) was...
Our objective was to determine whether multiple clinically useful radiotracers accumulate in brown adipose tissue (BAT) and assess their uptake rats kept at room temperature or exposed a cold environment.The following were injected intravenously into groups of 6 female Wistar rats: (201)Tl-chloride (TlCl), (123)I-metaiodobenzylguanidine (MIBG), (99m)Tc-sestamibi (MIBI), (18)F- (3)H-FDG, (3)H-l-methionine, (3)H-thymidine. BAT-stimulated animals maintained 4 degrees C for h before tracer...
We realized an ultimately advanced imaging system that comprises a hemi-spherically curved, back-illuminated CMOS image sensor (BIS) and integrated lens which doubles the sensitivity at edge of circle increases center by factor 1.4 with one-fifth lower dark current (J <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">d</sub> ) than planar BIS. Because field curvature aberration (A xmlns:xlink="http://www.w3.org/1999/xlink">fc</sub> was overcome in...