A5087647456- Liver Disease Diagnosis and Treatment
- MRI in cancer diagnosis
- Hepatocellular Carcinoma Treatment and Prognosis
- Liver Disease and Transplantation
- Advanced MRI Techniques and Applications
- Prostate Cancer Diagnosis and Treatment
- Radiomics and Machine Learning in Medical Imaging
- Lanthanide and Transition Metal Complexes
- Pancreatitis Pathology and Treatment
- Gallbladder and Bile Duct Disorders
- Cholangiocarcinoma and Gallbladder Cancer Studies
- Urinary and Genital Oncology Studies
- Bladder and Urothelial Cancer Treatments
- Pediatric Hepatobiliary Diseases and Treatments
- Pancreatic and Hepatic Oncology Research
- Prostate Cancer Treatment and Research
- Hormonal Regulation and Hypertension
- Renal cell carcinoma treatment
- Pediatric Urology and Nephrology Studies
- Pancreatic function and diabetes
- Abdominal Trauma and Injuries
- Blood Pressure and Hypertension Studies
- Spectroscopy Techniques in Biomedical and Chemical Research
- Gastroesophageal reflux and treatments
- Genetic and Kidney Cyst Diseases
Kawasaki Medical School
2013-2025
University of California, San Diego
2019-2020
Locally Recurrent Prostate Cancer After High-Dose-Rate Brachytherapy: The Value of Diffusion-Weighted Imaging, Dynamic Contrast-Enhanced MRI, and T2-Weighted Imaging in Localizing TumorsTsutomu Tamada1, Teruki Sone1, Yoshimasa Jo2, Junichi Hiratsuka3, Atsushi Higaki1, Hiroki Higashi1 Katsuyoshi Ito1Audio Available | Share
<b><i>Objective:</i></b> We aimed to investigate the natural outcome of nonhypervascular lesions detected in hepatobiliary phase gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced MRI by performing a longitudinal study retrospectively enrolled nationwide manner. <b><i>Methods:</i></b> Between February 2008 and March 2011, 224 patients with 504 nodules that were diagnosed as imaging recruited from institutions...
Purpose To identify biochemical factors associated with liver enhancement over time on gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance (MR) images and predict the optimal point of hepatobiliary phase in various clinical settings. Materials Methods This study was approved by institutional review boards, written informed consent obtained from 1903 patients enrolled. Simple multiple logistic regression analyses were performed to investigate...
Abstract Purpose: To evaluate the incidence and predictive factors of hypervascular transformation during follow‐up “high‐risk nodules” detected in hepatobiliary phase initial Gd‐EOB‐DTPA‐enhanced MRI chronic liver disease patients. Materials Methods: A total 109 patients with who underwent several times were investigated. Of these, 43 had 76 high‐risk nodules both hypointensity hypovascularity arterial MRI. These observed until hypervascularity was detected. clinical findings compared to...
The objective of our study was to investigate the value dynamic contrast-enhanced CT (DCE-CT) findings in predicting clinical prognosis patients with hypovolemic shock.This included 33 shock who underwent DCE-CT abdomen due trauma. attenuation values several abdominal organs (spleen, liver, pancreas, kidneys [cortex and medulla], adrenal gland) were measured early phase delayed compare differences contrast enhancement effects between survival group deceased group.Among shock, 15 died...
To assess whether noncontrast-enhanced steady-state free precession (SSFP) magnetic resonance imaging (MRI) with time-spatial labeling inversion pulse (Time-SLIP) can improve the visibility of corticomedullary differentiation normal kidney.A series SSFP MRI Time-SLIP were performed in 20 patients by using various times (TIs); 500-1800 msec increments 100 msec. In-phase (IP) and opposed-phase (OP) MR images also obtained. The signal intensity (SI) renal cortex medulla was measured to...
Newly Developed Hypervascular Hepatocellular Carcinoma During Follow-Up Periods in Patients With Chronic Liver Disease: Observation Serial Gadoxetic Acid–Enhanced MRIAkira Yamamoto1, Katsuyoshi Ito1, Tsutomu Tamada1, Atsushi Higaki1, Akihiko Kanki1, Tomohiro Sato1 and Daigo Tanimoto1Audio Available | Share
To investigate the feasibility of noncontrast-enhanced cine dynamic magnetic resonance cholangiopancreatography (MRCP) with a spatially selective inversion-recovery (IR) pulse for evaluating exocrine pancreatic function in comparison N-benzoyl-L-tyrosyl-p-aminobenzoic acid (BT-PABA) test as test.Twenty subjects or without chronic pancreatitis were included. MRCP IR was repeated every 15 seconds 5 minutes to acquire total 20 images (cine-dynamic MRCP). The median and mean frequency...
The mechanisms underlying the morphological changes in liver cirrhosis remain unknown. This study aimed to clarify relationship between fibrotic hepatic morphology and portal hemodynamic using four-dimensional flow magnetic resonance imaging (MRI).Overall, 100 patients with suspected disease who underwent 3-T MRI were evaluated this retrospective study. Liver fibrosis was assessed a combination of visual assessment quantitative measures, including fibrosis-4 index aspartate...
To describe the presence of "peripheral low intensity sign" in hepatic hemangioma hepatobiliary phase (HP) gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) and to compare frequency this sign between hemangiomas metastases.The Institutional Review Board approved study waived requirement for informed consent. Sixty-four patients with 51 (n = 31 patients) 58 metastases 33 underwent Gd-EOB-DTPA-enhanced MRI. In all hemangiomas,...
Abstract Purpose: To compare the conspicuity of hypointense hepatocellular nodules in patients with chronic liver disease on hepatobiliary phase (HP) gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid (Gd‐EOB‐DTPA)‐enhanced magnetic resonance imaging (MRI) acquired low to high flip angles (FAs). Materials and Methods: A total 95 who underwent Gd‐EOB‐DTPA‐enhanced MRI were included. HP images obtained at 20 minutes, 15°, 20°, 30° FAs. For detected nodule, liver‐to‐lesion...
To assess whether noncontrast-enhanced steady-state free precession (SSFP) magnetic resonance imaging (MRI) with a spatially selective inversion recovery (IR) pulse can improve the visibility of renal corticomedullary differentiation in patients showing dysfunction, and to investigate correlation between cortical thickness estimated glomerular filtration rate (eGFR).Sixty-five without chronic kidney diseases (CKD) were investigated. Based on eGFR, divided into three groups (Group 1, eGFR <...
Liver alignment between series/exams is challenged by dynamic morphology or variability in patient positioning motion. Image registration can improve image interpretation and lesion co-localization. We assessed the performance of a convolutional neural network algorithm to register cross-sectional liver imaging series compared its manual registration.Three hundred fourteen patients, including internal external datasets, who underwent gadoxetate disodium-enhanced magnetic resonance for...