A5072909990- Liver Disease Diagnosis and Treatment
- MRI in cancer diagnosis
- Advanced MRI Techniques and Applications
- Hepatocellular Carcinoma Treatment and Prognosis
- Liver Disease and Transplantation
- Pancreatitis Pathology and Treatment
- Pancreatic and Hepatic Oncology Research
- Radiomics and Machine Learning in Medical Imaging
- Pediatric Hepatobiliary Diseases and Treatments
- Gallbladder and Bile Duct Disorders
- Lanthanide and Transition Metal Complexes
- Atomic and Subatomic Physics Research
- Cholangiocarcinoma and Gallbladder Cancer Studies
- Prostate Cancer Diagnosis and Treatment
- Cardiac Imaging and Diagnostics
- Advanced Neuroimaging Techniques and Applications
- Medical Imaging Techniques and Applications
- Advanced X-ray and CT Imaging
- Cardiovascular Function and Risk Factors
- Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis
- Abdominal Trauma and Injuries
- Intestinal Malrotation and Obstruction Disorders
- Gastrointestinal disorders and treatments
- Medical Imaging and Pathology Studies
- Pediatric Urology and Nephrology Studies
Yamaguchi University
2011-2025
Fujita Health University Hospital
2019-2024
Community Link
2023
Kawasaki Medical School
2009-2018
Fujita Health University
2013
Keio University
2010
Osaka Hospital
2010
Kawasaki Hospital
2009
Kansai University
2009
Chugoku Rosai Hospital
2006
Abstract Purpose To investigate the utility of apparent diffusion coefficient (ADC) values for discriminating tumor in patients with prostate cancer from normal prostatic tissues healthy adult men, and to identify correlations between ADC histologic grade cancer. Materials Methods A total 125 male volunteers (mean age, 60 years; range, 50–86 years) 90 71 51–88 underwent diffusion‐weighted imaging (DWI) a single‐shot echo‐planar sequence using b‐factors 0 800 sec/mm 2 . was measured two...
To prospectively evaluate the safety and efficacy of combined unenhanced gadoxetic acid disodium (Gd-EOB-DTPA)-enhanced magnetic resonance (MR) imaging compared with MR triphasic contrast-enhanced spiral computed tomography (CT) for detection characterization focal liver lesions.The study was reviewed approved by institutional review board at each 15 centers involved in study, informed written consent given all patients. In total, 178 patients suspected hepatic lesions (based, most patients,...
PURPOSE: To determine whether a modified caudate–right lobe ratio (C/RL) with use of the right portal vein to set lateral boundary (C/RL-r) is more accurate for diagnosing cirrhosis and evaluating its clinical severity than previously described C/RL main (C/RL-m). MATERIALS AND METHODS: Two hundred thirty-six patients (121 pathologically proved 115 without history chronic hepatic diseases) underwent magnetic resonance (MR) imaging. independent observers measured C/RL-r compared it C/RL-m....
<i>Objective:</i> To evaluate the diagnostic accuracy of liver cirrhosis by imaging modalities, including CT, MRI and US, compared to results obtained from histopathological diagnoses resected specimens. <i>Materials Methods:</i> US examinations 142 patients with chronic disease who underwent surgery for complicated hepatocellular carcinoma (<3 cm in diameter) 10 institutions were blindly reviewed a multicenter study three radiologists experienced US. The images...
To determine the value of conventional T1 - and T2-weighted images gadolinium-enhanced dynamic magnetic resonance (MR) as a supplement to MR cholangiopancreatographic (MRCP) in differentiation benign from malignant causes biliary dilatation.MR studies 62 patients with dilatation proved included T1- less heavily images, well MRCP images. Two radiologists reviewed alone, nonenhanced images.For dilatation, area under receiver operating characteristic curve (A(z)) was significantly (P < .05)...
To evaluate the frequency and clinical importance of small (<or=2 cm) early-enhancing hepatic lesions in cirrhotic liver disease with serial multiphasic contrast material-enhanced dynamic magnetic resonance (MR) imaging.The study population included 208 patients cirrhosis (n = 162) or chronic hepatitis 46) who underwent contrast-enhanced MR imaging at least twice during course, a 12-month interval between initial latest examinations. Initial images were evaluated for presence shape...
Abstract Purpose To evaluate the differences in enhancement of abdominal solid organ and major vessel on dynamic contrast‐enhanced magnetic resonance imaging (DCE‐MRI) obtained with gadolinium ethoxybenzyldiethylenetriamine pentaacetic acid (Gd‐EOB‐DTPA: EOB) diethylenetriamine (Gd‐DTPA) same patients. Materials Methods A total 13 healthy volunteers underwent repeat assessments MR examinations DCE‐MRI using either Gd‐DTPA at a dose 0.1 mmol/kg body weight or EOB 0.025 weight. DCE images were...
Prostate Cancer Detection in Patients With Total Serum Prostate-Specific Antigen Levels of 4–10 ng/mL: Diagnostic Efficacy Diffusion-Weighted Imaging, Dynamic Contrast-Enhanced MRI, and T2-Weighted ImagingTsutomu Tamada1, Teruki Sone1, Hiroki Higashi1, Yoshimasa Jo2, Akira Yamamoto1, Akihiko Kanki1 Katsuyoshi Ito1Audio Available | Share
Objective The objective of our study was to investigate tumor conspicuity and the discrimination potential for aggressiveness on diffusion-weighted magnetic resonance imaging (DW-MRI) with high b value at 3-T. Materials Methods institutional review board approved this waived requirement informed consent. A total 50 patients prostate cancer (69 foci; 48 in PZ, 20 TZ, one whole prostate) who underwent multiparametric MRI including DW-MRI (b values: 0, 1000 s/mm2 2000 s/mm2) a 3-T system were...
PURPOSE: To determine whether the combined use of heavily and moderately T2-weighted fast spin-echo magnetic resonance (MR) images improves differentiation non-solid, benign hepatic lesions from solid malignancies. MATERIALS AND METHODS: Three radiologists reviewed (n = 133) multiphasic dynamic contrast material-enhanced 93) MR in 133 patients with proved focal (95 benign, 38 malignant). The used a five-point scale to rate their confidence determination malignancy. RESULTS: All three...
The purpose of this study was to assess the value multiarterial phase contrast-enhanced dynamic MRI whole liver obtained during a single breath-hold for small early enhancing hepatic lesions in patients with cirrhosis or chronic hepatitis, emphasizing distinction between hypervascular hepatocellular carcinomas and pseudolesions.The population included 40 hepatitis who had (a total 70 lesions: carcinomas, 30 pseudolesions). All underwent (six phases) breath-hold.Twenty-one (53%) showed rapid...
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
Objectives The present multicenter prospective observational study investigated the effectiveness and safety of neoadjuvant chemotherapy (NAC) for patients with borderline resectable pancreatic cancer (BRPC) those RPC contacting major vessels, respect to a historical control upfront surgery. Materials Methods Patients BRPC vessels were prospectively registered administered NAC durations regimens determined by corresponding treating physician. Our primary aim was assess R0 resection rate,...
PURPOSE: To determine the frequency on magnetic resonance (MR) images of a widened pericholecystic space, which authors call expanded gallbladder fossa sign, and to assess sensitivity specificity this sign for cirrhosis. MATERIALS AND METHODS: Three-hundred thirteen patients who underwent MR imaging were included in study, including 190 with pathologically proved cirrhosis (cirrhosis patients) 123 without history chronic liver diseases (control subjects). qualitatively evaluated by three...
The aim of this study was to evaluate the degree hepatic enhancement and image quality in patients with cirrhosis or chronic hepatitis who underwent multiphasic contrast-enhanced dynamic imaging on MDCT at least twice using standard (300 mg I/mL) higher (370 iodine concentrations contrast medium during follow-up periods.This included 20 liver diseases two examinations 100 mL I/mL = group A) B) medium. After we obtained unenhanced CT scans, performed scanning 30 sec (arterial phase), 60...
To determine whether the frequency of hepatocellular carcinoma (HCC) in patients with cirrhosis is affected by hepatic iron deposition as detected magnetic resonance (MR) imaging.In a retrospective search MR imaging and histopathology records, 196 histopathologically proved (n = 80) or without 116) HCC who underwent T2-weighted conventional fast spin-echo gradient-echo (GRE) (echo time > 6.0 msec) were identified. images qualitatively quantitatively evaluated for diffuse siderotic...
Given the characteristic differences between intravascular ultrasound (IVUS) and optical frequency domain imaging (OFDI), their approach to therapeutic guidance during percutaneous coronary interventions (PCIs) arterial healing response after stenting may also vary.MISTIC-1 (The Multimodality Imaging Study in Cardiology cohort 1) is a multicenter, randomized-controlled, noninferiority trial that compared end points OFDI- IVUS-guided PCI. Patients with stable artery disease were randomly...
MR Imaging of Complications After Liver TransplantationKatsuyoshi Ito1 2, Evan S. Siegelman1, Alan H. Stolpen1 and Donald G. Mitchell3Audio Available | Share
Breath-hold multislice dynamic MRI was used to diagnose 115 hepatic tumors in 55 patients. With this technique 10 slice-section images were made during a single breath-hold, achieving nearly complete liver coverage. Early enhancement obtained 20 s after intravenous bolus injection of gadopentetate dimeglumine. The detection rate untreated hepatocellular carcinomas greater with breath-hold imaging (91%) than conventional spin echo techniques (73%), because the early showed arterial dominant...
To evaluate the frequency, location, and appearance of transient increased attenuation in liver during arterial-phase helical or incremental computed tomography (CT) patients with gallbladder disease without hepatic extension.Findings dynamic CT examinations 31 surgically proved not extending into control were retrospectively reviewed correlated findings other imaging examinations.Areas (n = 27) identified 22 only one patients. The difference these was statistically significant (P < .001)....