Publications by authors named "Yoshiyuki Okochi"
Article Synopsis
- The study aimed to evaluate the effectiveness of (11)C-methionine (MET) and (18)F-fluorodeoxyglucose (FDG) PET scans in diagnosing central nervous system (CNS) germinomas using both qualitative and quantitative methods.
- Ten patients diagnosed with CNS germinoma underwent MET and/or FDG-PET scans, and the analysis included scoring image quality and calculating the standardized uptake value (SUVmax) to assess tumor visibility.
- Results showed that MET-PET was more effective in identifying CNS germinomas compared to FDG-PET, which struggled with image contrast; thus, MET is recommended for planning biopsies or surgeries while further research
Objective: The purpose of the study was to compare observer performance in the detection of cerebral infarction on a brain CT using medical-grade liquid crystal display (LCD) monitors calibrated with the gray-scale standard display function and with γ 2.2 and using an iPad with a simulated screen setting.
Materials And Methods: We amassed 97 sample sets, from 47 patients with proven cerebral infarction and 50 healthy control subjects.
Purpose: To compare left adrenal venous sampling (AVS) in two locations: the central adrenal vein and the common trunk.
Materials And Methods: A total of 22 patients (12 men and 10 women; mean age, 50 y; range, 26-65 y) who were suspected of having primary aldosteronism (PA) and underwent successful AVS with cortisol concentration measurement and/or venography between November 2010 and August 2011 were retrospectively analyzed. In regard to the left adrenal vein, collections were done at two locations: at the common trunk below the confluence of the inferior phrenic vein and at the central adrenal vein, which was above the confluence.
Purpose: The aim of our study was to examine the usefulness of PET with C-methionine (MET) and F-fluorodeoxyglucose (FDG) in the differentiation of glioblastoma multiforme (GBM) and intracranial diffuse large B-cell lymphoma (DLBCL).
Materials And Methods: We evaluated 22 patients retrospectively with an enhancing brain tumor on MRI, including 15 GBM and 7 DLBCL, which was confirmed by histopathology. Dynamic PET scans with MET and FDG were performed for preoperative differential diagnosis.