The purpose of this study was to assess the image quality half-dose (HD) liver computed tomography (CT) using a model-based iterative reconstruction algorithm (MBIR) compared with reference dose (RD) filtered back projection (FBP) and HD CT images FBP adaptive statistical (ASIR).A total 103 patients suspected having metastases underwent including portal venous phase imaging. Among these patients, 73 had undergone RD reconstructed FBP, scans were separately MBIR. For other 30 ASIR,...

To assess diagnostic performance and imaging features of gadoxetic acid-enhanced magnetic resonance (MR) in small (≤1-cm) hepatocellular carcinoma (HCC) detection patients with chronic liver disease.The institutional review board approved this retrospective study waived informed consent. Sixty (56 men, four women; mean age, 60.1 years) HCC (146 lesions; 70 > 1 cm, 76 ≤ cm) underwent MR imaging. was confirmed at surgical resection (72 30 42 or by showing interval growth typical enhancement...

To determine the diagnostic performance of magnetic resonance (MR) elastography in comparison to spleen length and dynamic contrast material-enhanced (DCE) MR imaging association with esophageal varices patients liver cirrhosis by using endoscopy as reference standard.This retrospective study received institutional review board approval, informed consent was waived. One hundred thirty-nine who underwent DCE imaging, including elastography, were included. Hepatic stiffness (HS) (SS) values...

Background Pancreatic neuroendocrine tumors (PNET) include heterogeneous with a variable degree of inherent biologic aggressiveness represented by the histopathologic grade. Although several studies investigated computed tomography (CT) characteristics which can predict grade PNET, accurate prediction PNET CT examination alone is still limited. Purpose To investigate important findings and texture variables for PNET. Material Methods Sixty-six patients pathologically confirmed PNETs (grade 1...

Purpose To determine the reproducibility of MR elastography (MRE) and repeatability stiffness measurement MRE in staging liver fibrosis. Materials Methods Ninety‐four patients, who underwent MRE, were included this study. The patients classified into group 1 (n = 47) 2 according to our knowledge their histologic hepatic fibrosis (HF) stage. analyze twice. In addition, evaluate a single observer measured values second MREs twice, two observers independently 2. A 95% Bland‐Altman limits...

Purpose To determine whether parameters obtained from intravoxel incoherent motion (IVIM)‐diffusion‐weighted imaging (DWI) using multiple b‐values can improve characterization of common focal liver lesions (FLLs), compared with the apparent diffusion coefficient ( ADC total ). Materials and Methods Our Institutional Review Board approved this retrospective study informed consent was waived. In all, 142 patients 169 FLLs underwent magnetic resonance (MRI) including IVIM‐DWI b factors at 3.0T....

The purpose of this study was to describe the MRI features small solid pseudopapillary tumors useful for differentiating these from other pancreatic tumors.Forty-five patients (18 men, 27 women; mean age, 59 ± 11.7 years) with 45 smaller than 3 cm in diameter registered 2000 2009 were included. Twenty-two adenocarcinomas, 12 endocrine tumors, and 11 tumors. Two radiologists analyzed MR images morphologic features, signal intensity lesion on unenhanced images, dynamic enhancement pattern....

MRI Features of Gastrointestinal Stromal TumorsMi Hye Yu1, Jeong Min Lee2, Jee Hyun Baek2, Joon Koo Han2 and Byung-Ihn Choi2Audio Available | Share

Objective: To cross-validate liver stiffness (LS) measured on shear wave elastography (SWE) and magnetic resonance (MRE) in the same individuals. Materials Methods:We included 94 transplantation (LT) recipients 114 donors who underwent either MRE or SWE before surgery biopsy.We determined technical success rates incidence of unreliable LS measurements (LSM) MRE.Among 69 patients both SWE, median coefficient variation (CV) LSM from each examination were compared correlated.Areas under...

To determine whether a controlled aliasing in parallel imaging results higher acceleration (CAIPIRINHA) technique can improve the image quality of three-dimensional (3D), T1-weighted gradient echo (T1w-GRE) compared with use standard, acquisition (PAT).Sixty-four patients who underwent liver MR on 3 Tesla (T) scanner, were included this study. Twenty minutes after injection 0.025 mmole/kg gadoxetic acid, 3D T1w-GRE (volumetric interpolated breathhold examination [VIBE]) was acquired twice...

OBJECTIVE: To compare the diagnostic performance of gadoxetic acid-enhanced magnetic resonance (MR) imaging with that triple-phase multidetector-row computed tomography (MDCT) in detection liver metastasis. MATERIALS AND METHODS: Our institutional review board approved this retrospective study and waived informed consent. The population consisted 51 patients hepatic metastases 62 benign lesions, who underwent MDCT MRI within one month. Two radiologists independently randomly reviewed images...

The purpose of this study was to compare image quality and lesion detectability in the evaluation hypervascular hepatocellular carcinoma (HCC) on low-tube-voltage half-dose liver CT scans subjected sinogram-affirmed iterative reconstruction (SAFIRE) with full-dose reconstructed filtered back projection (FBP).A total 126 patients suspected HCC who underwent including arterial phase scanning at 80 kVp dual-source mode (300 mAs for each tube) were included study. FBP, space (IRIS), five SAFIRE...

<title>Abstract</title> Huperzine A (HupA) is for treating Alzheimer's disease(AD) which was mainly extracted from the <italic>Huperzia serrata(HS)</italic>. Especially, (-)-HupA <italic>HS</italic> with high inhibitory activity of acetylcholinesterase are scarce and chemical synthesis (+)- HupA toxicity low activity. In this work, <italic>Serratia marcescens</italic> HL1 firstly found isolated <italic>HS</italic>, that identified according to their morphological characteristics nuclear...

Purpose The aim of the study was to evaluate intraobserver reproducibility and determine elasticity characteristics focal liver lesions (FLLs) by shear wave elastography (SWE). Methods One hundred thirty-six FLLs in 118 patients were examined with SWE for quantitative qualitative assessment stiffness. Three images obtained each lesion parenchyma 1 radiologist. Intraobserver assessed intraclass correlation coefficients (ICCs). Patient factors that can affect evaluated. For characterization...

The aims of this study were to observe the pattern transient motion after gadoxetic acid administration including incidence, onset, and duration, evaluate clinical feasibility free-breathing acid-enhanced liver magnetic resonance imaging using golden-angle radial sparse parallel (GRASP) with respiratory gating.In institutional review board-approved prospective study, 59 patients who provided informed consents analyzed. Free-breathing dynamic T1-weighted images (T1WIs) obtained GRASP at 3 T a...

&lt;b&gt;&lt;i&gt;Introduction:&lt;/i&gt;&lt;/b&gt; Small-duct (SD) and large-duct (LD) subtypes of cholangiocarcinoma have been investigated for their prognostic factors. This study aimed to evaluate the diagnostic value liver magnetic resonance imaging (MRI) in differentiating SD LD types intrahepatic (iCCA) its predicting survival outcomes. &lt;b&gt;&lt;i&gt;Methods:&lt;/i&gt;&lt;/b&gt; One hundred forty patients with surgically confirmed iCCAs (93 type 47 type) who had available...

Abstract Background CT prediction of resectability and prognosis following neoadjuvant treatment (NAT) in patients with pancreatic ductal adenocarcinoma (PDAC) remains challenging. This study aims to determine whether addition 18 F-fluorodeoxyglucose (FDG) postiron emission tomography (PET)/MRI carbohydrate antigen (CA) 19–9 contrast-enhanced (CECT) can improve accuracy predicting compared CECT alone predict PDAC after NAT. Methods In this retrospective study, 120 (65 women; mean age, 66.7...

To evaluate the utility of Kupffer-phase imaging by real-time contrast-enhanced sonography using perflurobutane microbubble contrast agent Sonazoid (GE Healthcare, Oslo, Norway) in guiding biopsy or radiofrequency (RF) ablation focal liver lesions.A total 75 patients (mean age, 59.7 years) who were referred for percutaneous (n = 42) RF 33) included study. Grayscale and performed all before procedure. The conspicuity each targeted lesion on grayscale sonography, vascular-phase was graded a...

The purpose of the study was to investigate clinical feasibility free-breathing dynamic T1-weighted imaging (T1WI) using Cartesian sampling, compressed sensing, and iterative reconstruction in gadoxetic acid-enhanced liver magnetic resonance (MRI).This retrospective approved by our institutional review board, requirement for informed consent waived. A total 51 patients at high risk breath-holding failure underwent T1WI a manner volumetric interpolated breath-hold (BH) examination with...

Objective: To evaluate the clinical impact of using registration software for ablative margin assessment on pre-radiofrequency ablation (RFA) magnetic resonance imaging (MRI) and post-RFA computed tomography (CT) compared with conventional side-by-side MR-CT visual comparison. Materials Methods:In this Institutional Review Board-approved prospective study, 68 patients 88 hepatocellulcar carcinomas (HCCs) who had undergone pre-RFA MRI were enrolled.Informed consent was obtained from all...