<h3>Importance</h3> Current recommendations for patients with cirrhosis are to undergo surveillance hepatocellular carcinoma (HCC) ultrasonography (US) every 6 months. However, the sensitivity of US screening detect early-stage HCC is suboptimal. Magnetic resonance imaging (MRI) liver-specific contrast may additional HCCs missed by in high-risk cirrhosis. <h3>Objective</h3> To compare detection rate and MRI who at high risk HCC. <h3>Design, Setting, Participants</h3> A prospective study 407...

To retrospectively determine the frequency, clinical and pathologic characteristics, computed tomographic (CT) findings of visually isoattenuating pancreatic adenocarcinomas to investigate utility magnetic resonance (MR) imaging positron emission tomography (PET)/CT for detecting them.Institutional review board approval was obtained. Patient informed consent waived. Of 743 consecutive patients with pathologically proved cancer, 644 (392 men, 252 women; mean age, 60 years ± 9.5 [standard...

Abstract Purpose To evaluate whether measurement of apparent diffusion coefficient (ADC) and pure ( D ) can help to characterize solid pancreatic masses. Materials Methods Diffusion‐weighted MR imaging was performed in both a patient group n = 71; cancer [ 47], mass‐forming pancreatitis 13], pseudopapillary neoplasm 6], neuroendocrine tumor 5]) normal control 11) by applying three b‐factors 0, 500, 1000 sec/mm 2 . ADC 500 , (ADC using b ), perfusion fraction f 1‐ exp [‐500 × – )]) pancreas,...

To prospectively evaluate the reproducibility of apparent diffusion coefficient (ADC) measurement in malignant hepatic tumors and to examine influence imaging methods, lesion location, size on ADC measurement.The institutional review board approved study protocol, informed consent was obtained. Forty-nine patients underwent both breath-hold respiratory-triggered diffusion-weighted (DW) magnetic resonance a 1.5-T system twice. Two independent readers measured largest tumor for each patient...

To prospectively compare diagnostic performance of diffusion-weighted (DW) imaging, gadoxetic acid-enhanced magnetic resonance (MR) both techniques combined (combined MR imaging), and computed tomography (CT) for detecting colorectal hepatic metastases evaluate incremental value patients with potentially curable detected CT.In this institutional review board-approved prospective study, informed consent, 51 (39 men, 12 women; mean age, 62 years) resectable CT underwent liver MR, including DW...

Background & AimsHepatocellular carcinoma (HCC) has a high rate of intrahepatic recurrence after curative treatment, possibly because metastases are not always identified before treatment. Magnetic resonance (MR) imaging with liver-specific contrast agent, gadoxetic acid, can detect small HCCs levels sensitivity. We investigated whether MR acid increases overall and recurrence-free survival patients initially assessed by computed tomography (CT).MethodsWe performed retrospective study data...

Purpose To evaluate the diagnostic performance of CT in determination pancreatic cancer resectability according to National Comprehensive Cancer Network (NCCN) criteria predict R0 resection. Materials and Methods Structured reports clinically prepared by board-certified abdominal radiologists from January 2014 March 2017 were retrospectively reviewed assess (resectable, borderline resectable, or unresectable) NCCN (version 1.2017) 616 patients (369 men, 247 women; mean age, 63 years ± 10...

Objective The aims of this study were to assess the confounding effects hepatic iron deposition, inflammation, and fibrosis on steatosis (HS) evaluation by magnetic resonance imaging (MRI) spectroscopy (MRS) accuracies MRI MRS for HS evaluation, using histology as reference standard. Materials Methods In institutional review board–approved prospective study, 56 patients gave informed consents underwent chemical-shift liver a 1.5-T scanner. To estimate fat fraction (FF), 4 analysis methods...

Objective: To validate the 2012 guidelines for intraductal papillary mucinous neoplasm (IPMN) of pancreas and to compare diagnostic performances computed tomography (CT) magnetic resonance imaging (MRI) differentiating malignant from benign IPMN. Background: As IPMN has variable risks malignancy management this entity is closely related its potential, it important predict malignancy. Methods: This retrospective study included 158 patients with surgically confirmed who underwent both...

The aim of this study was to validate the Liver Imaging Reporting and Data System (LI-RADS) v2014 category 4 (LR-4) 5 (LR-5) criteria on gadoxetate disodium-enhanced magnetic resonance imaging (MRI) in patients with chronic liver disease.Between January December 2012, 300 disease who had hepatic nodules 3.0 cm or smaller at surveillance ultrasonography MRI were included. LI-RADS retrospectively assigned each nodule MRI. Final diagnosis assessed using pathologic only (operation core-needle...

Background Current Liver Imaging Reporting and Data System guidelines define the washout appearance of gadoxetic acid-enhanced MRI only during portal venous phase. Defining phase may lead to lower sensitivity for diagnosis hepatocellular carcinoma (HCC). Purpose To compare diagnostic performances three criteria HCC according phases which was determined. Materials Methods In this retrospective study, patients with a hepatic nodule detected at US surveillance from January December 2012...

Objective Primary mesenchymal tumors of the pancreas are extremely rare and no comprehensive study this class has been previously performed. Methods Twenty cases primary were selected compared clinicopathologic variables with consecutively resected 500 pancreatic ductal adenocarcinomas. Results Finally, 20 (0.3%) confirmed as tumors. The 14 (70%) benign/borderline included 4 fibromatoses, 2 cavernous hemangiomas, schwannomas, solid cystic hamartomas, solitary fibrous tumors, 1 case...

Abstract Background &amp; Aims We aimed to compare the performance of gadoxetic acid‐enhanced abbreviated MRI (AMRI)‐based surveillance and ultrasound‐only in high‐risk patients for hepatocellular carcinoma (HCC). Methods Prospectively recruited (&gt;5% annual risk HCC) who underwent one three rounds complete (CMRI) ultrasound at 6‐months intervals were retrospectively analysed. AMRI consisted diffusion‐weighted, T2‐weighted, hepatobiliary phase imaging. The sensitivity, specificity,...

Background Deep learning (DL) may facilitate the diagnosis of various pancreatic lesions at imaging. Purpose To develop and validate a DL-based approach for automatic identification patients with solid cystic neoplasms abdominal CT compare its diagnostic performance that radiologists. Materials Methods In this retrospective study, three-dimensional nnU-Net–based DL model was trained using data who underwent resection between January 2014 March 2015 subset without abnormality in 2014....

Abstract Background and Aim: Obesity as a risk factor for colorectal neoplasm (CRN) is controversial. In the present study, we evaluated visceral obesity CRN. Methods: We prospectively enrolled 200 consecutive, asymptomatic adults (male : female = 133:67, mean age, 50.9 ± 8.5 years) undergoing both colonoscopy abdominopelvic computed tomography (CT) scan routine health evaluations. The presence or absence characteristics of CRN were determined during colonoscopy. amount adipose tissue (VAT)...

The purpose of this study was to describe the typical CT and chemical shift MRI findings evaluate their usefulness in diagnosis focal fatty replacement pancreas five patients.The presence a perceptible low-attenuation lesion on reduction signal intensity opposed phase MR images are useful for differentiating from true pancreatic neoplasm. Therefore, these imaging obviate invasive diagnostic procedures surgery care patients with pancreas.

Abstract Purpose: To evaluate the effect of diffusion‐weighted imaging (DWI) methods, apparent diffusion coefficient (ADC) calculation and selection b‐values on ADCs measurement reproducibility malignant hepatic tumors. Materials Methods: Nineteen patients with pathologically confirmed tumors underwent breath‐hold DWI (b‐values = 0, 50, 500 s/mm 2 ) respiratory‐triggered (0, 300, 500, 1000 twice a 1.5 T magnetic resonance (MRI) scanner. were calculated using two b‐value and/or multiple...

Background The 2017 version of the Liver Imaging Reporting and Data System (LI-RADS) recently included standardized interpretation, reporting, management guidelines for US (US LI-RADS); however, this system has not yet been validated. Purpose To evaluate diagnostic performance LI-RADS detecting hepatocellular carcinoma (HCC) in participants at high risk to determine clinical factors associated with a poor visualization score. Materials Methods This study 407 prospectively recruited (mean...