A5000615453- Medical Imaging Techniques and Applications
- Radiomics and Machine Learning in Medical Imaging
- Advanced MRI Techniques and Applications
- Thyroid Cancer Diagnosis and Treatment
- Cardiac Imaging and Diagnostics
- Medical Imaging and Pathology Studies
- Lung Cancer Diagnosis and Treatment
- MRI in cancer diagnosis
- Lymphoma Diagnosis and Treatment
- Glioma Diagnosis and Treatment
- Radiation Dose and Imaging
- Sarcoidosis and Beryllium Toxicity Research
- Radiopharmaceutical Chemistry and Applications
- Head and Neck Cancer Studies
- Lung Cancer Treatments and Mutations
- Advanced X-ray and CT Imaging
- Pituitary Gland Disorders and Treatments
- Hepatocellular Carcinoma Treatment and Prognosis
- Renal cell carcinoma treatment
- Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis
- Thyroid and Parathyroid Surgery
- Sarcoma Diagnosis and Treatment
- Salivary Gland Tumors Diagnosis and Treatment
- Endometrial and Cervical Cancer Treatments
- Advanced Neuroimaging Techniques and Applications
Tokyo Medical University
2007-2024
Tokyo Medical University Hospital
2023
Tokyo Women's Medical University
2014-2022
Kagawa Prefectural Central Hospital
2018-2022
Osaka Aoyama University
2021
Society of Nuclear Medicine and Molecular Imaging
2019
Creative Research Enterprises (United States)
2018
Kyushu University
2005-2015
Teikyo University
2014
Kao Corporation (Japan)
2010
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...
Abstract Background & Aims The microvascular invasion of cancer cells (mvi) is a good prognostic factor after hepatic resection ( HR ) and liver transplantation for hepatocellular carcinoma HCC ). This study aimed to predict mvi in patients with . Methods We studied 63 hepatectomized who had without any extrahepatic metastases vascular invasion, which were detected during preoperative evaluation. clinicopathological data these analysed presence mvi. A scoring system was designed using...
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...
Abstract The diagnostic reference levels (DRLs) are one of several effective tools for optimizing nuclear medicine examinations and reducing patient exposure. With the advances in imaging technology alterations examination protocols, DRLs must be reviewed periodically. first Japan were established 2015, since 5 years have passed, it is time to review revise DRLs. We conducted a survey investigate administered activities radiopharmaceuticals radiation doses computed tomography (CT) hybrid CT...
Background:Myocardial injury can be detected more sensitively using 123I-radioiodinated 15-(p-iodophenyl)-3(R,S)-methylpentadecanoic acid (BMIPP) than thallium-201 (TL). The present study investigated whether 18F-fluorodeoxyglucose-positron emission tomography (FDG-PET) uptake as an index of active inflammation in patients with cardiac sarcoidosis (CS) is associated BMIPP and TL findings, dual single-photon computed (SPECT) facilitate diagnosis CS.Methods Results:We retrospectively enrolled...
To elucidate the mechanisms by which glucocorticoids promote Th2-type responses, we investigated influence of dexamethasone (DEX) on both cytokine production and viability NK1.1+ T cells. The in vivo administration DEX enhanced IL-4 spleen cells liver mononuclear wild-type mice, but not beta2m-deficient mice. reduced cellularity conventional cells, that liver, suggesting an increased proportion Moreover, IL-4-producing NK.1 + DEX-injected These results suggest induced through preferential...
Purpose: The purpose of this study was to investigate the clinical factors for predicting local failure after definitive radiotherapy in oropharyngeal or hypopharyngeal squamous cell carcinoma. Materials and Methods: Between July 2006 December 2008, 64 consecutive patients with carcinoma hypopharynx oropharynx treated were included study. Clinical factors, such as pretreatment hemoglobin (Hb) level, T-stage, gross tumor volume primary tumors (pGTV), maximum standardized uptake value (SUVmax)...
Aim The role of 18 F ‐fluorodeoxyglucose positron emission tomography ( FDG‐PET ) in the diagnosis and staging primary liver cancer has been demonstrated several reports. However, no preoperative evaluations sarcomatous hepatocellular carcinoma HCC combined cholangiocarcinoma (c ‐ CC with have reported so far. Methods Fifty‐three patients three c who received resection or living‐donor transplantation were enrolled this study. All 56 had undergone , a total 67 analyzed histologically....
We investigated the role of F-18 fluorodeoxyglucose (FDG)-positron emission tomography (PET)/computed (CT) for differential diagnosis malignant and benign pleural effusion. studied 36 consecutive patients with histologically proven cancer (excluding mesothelioma) who underwent FDG-PET/CT suspected Fourteen had cytologically effusion other 22 either negative cytology or clinical follow-up, which confirmed etiology. examined maximum standardized uptake values (SUVmax) target-to-normal tissue...
Heterogeneity of arterial transit time due to cerebral artery steno-occlusive lesions hampers accurate regional blood flow measurement by spin labeling (ASL).To assess the feasibility ASL with multiple-delay sampling in patients diseases comparing positron emission tomography (PET), and determine whether measured this technique is correlated mean time, a PET index perfusion pressure.Sixteen received both (15)O-PET. The PET, ASL, were obtained region-of-interest analysis. Correlation between...
Abstract Objective The optimization of medical exposure is one the major issues regarding radiation protection in world, and International Committee Radiological Protection Atomic Energy Agency recommend establishing diagnostic reference levels (DRLs) as tools for dose optimization. Therefore, development DRLs based on latest survey has been required nuclear medicine-related societies organizations. This prompted us to conduct a nationwide actual administered radioactivity adults purpose...