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https://www.readbyqxmd.com/read/28070844/gd-eob-dtpa-enhanced-mri-t1-mapping-for-assessment-of-liver-function-in-rabbit-fibrosis-model-comparison-of-hepatobiliary-phase-images-obtained-at-10-and-20%C3%A2-min
#1
Zhi-Peng Zhou, Li-Ling Long, Li-Juan Huang, Teng-Fei Yang, Zhong-Kui Huang
OBJECTIVES: To compare hepatobiliary phase (HBP) images obtained at 10 and 20 min after Gd-EOB-DTPA-enhanced MRI for assessment of liver function in rabbit fibrosis model on 3.0 T MR imaging. METHODS: 34 animals were separated into three groups: 5 for a control group, 14 for a mild fibrosis group, and 15 for a severe fibrosis group based on pathological proof. T1 relaxation times (T1rt) were measured on T1 mapping and reduction rates of T1rt (rrT1rt) were calculated...
January 9, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28062263/the-natural-history-of-streptozotocin-stimulated-non-alcoholic-steatohepatitis-mice-followed-by-gd-eob-dtpa-enhanced-mri-comparison-with-simple-steatosis-mice
#2
Hiroyuki Akai, Shigeru Kiryu, Yasunori Ohta, Koichiro Yasaka, Yoshiyasu Nakano, Yusuke Inoue, Kuni Ohtomo
PURPOSE: To clarify the development of HCC, temporal change of steatosis and Gd-EOB-DTPA enhancement of non-alcoholic steatohepatitis (NASH) model mice by magnetic resonance imaging (MRI). MATERIALS AND METHODS: All animal experiments were approved by the institution's Animal Research Committee. MRI was performed on six NASH and six simple steatosis (SS) model mice every 2weeks from the ages of 8weeks to 16weeks. The sequential changes in the number and size of the focal liver lesions detected on Gd-EOB-DTPA-enhanced MRI were evaluated...
January 3, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28048247/we-fg-202-10-assessing-hepatocellular-carcinoma-hcc-response-to-sbrt-using-dce-mri
#3
Y Yuan, M Buckstein, M Chao, K Rosenzweig, Y Lo
PURPOSE: To investigate the feasibility of using DCE-MRI to assess treatment response of HCC to SBRT. METHODS: For seven liver HCC patients treated by photon SBRT with radiation dose ranging from 35 to 50 Gy in 5 fractions, T1-weighted DCE-MRI was performed before and at 1-3 months after the treatment. Each study included one pre-contrast and five post Gd-EOB-DTPA-enhanced imaging series. The target tumor and the liver were manually outlined on the arterial phase images...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/27993534/assessment-of-the-link-between-quantitative-biexponential-diffusion-weighted-imaging-and-contrast-enhanced-mri-in-the-liver
#4
Hildebrand Dijkstra, Matthijs Oudkerk, Peter Kappert, Paul E Sijens
PURPOSE: To investigate if intravoxel incoherent motion (IVIM) modeled diffusion-weighted imaging (DWI) can be linked to contrast-enhanced (CE-)MRI in liver parenchyma and liver lesions. METHODS: Twenty-five patients underwent IVIM-DWI followed by multiphase CE-MRI using Gd-EOB-DTPA (n=20) or Gd-DOTA (n=5) concluded with IVIM-DWI. Diffusion (Dslow), microperfusion (Dfast), its fraction (ffast), wash-in-rate (Rearly) and late-enhancement-rate (Rlate) of Gd-EOB-DTPA were calculated voxel-wise for the liver...
December 18, 2016: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/27986173/liver-function-assessment-by-magnetic-resonance-imaging
#5
Emre Ünal, Deniz Akata, Musturay Karcaaltincaba
Liver function assessment by hepatocyte-specific contrast-enhanced magnetic resonance imaging is becoming a new biomarker. Liver function can be assessed by T1 mapping (reduction rate) and signal intensity measurement (relative enhancement ratio) before and after GD-EOB-DTPA (gadoxetic acid) administration, as alternative to Tc-99m galactosyl serum albumin scintigraphy, 99m Tc-labeled mebrofenin scintigraphy, and indocyanine green clearance test. Magnetic resonance imaging assessment of liver function can enable diagnosis of cirrhosis, nonalcoholic fatty liver disease associated fibrosis and steatohepatitis, primary sclerosing cholangitis, toxic hepatitis, and chemotherapy and radiotherapy-related changes, which may be only visible on hepatobiliary phase images...
December 2016: Seminars in Ultrasound, CT, and MR
https://www.readbyqxmd.com/read/27986172/magnetic-resonance-imaging-of-liver-metastasis
#6
Ali Devrim Karaosmanoglu, Mehmet Ruhi Onur, Mustafa Nasuh Ozmen, Deniz Akata, Musturay Karcaaltincaba
Liver magnetic resonance imaging (MRI) is becoming the gold standard in liver metastasis detection and treatment response assessment. The most sensitive magnetic resonance sequences are diffusion-weighted images and hepatobiliary phase images after Gd-EOB-DTPA. Peripheral ring enhancement, diffusion restriction, and hypointensity on hepatobiliary phase images are hallmarks of liver metastases. In patients with normal ultrasonography, computed tomography (CT), and positron emission tomography (PET)-CT findings and high clinical suspicion of metastasis, MRI should be performed for diagnosis of unseen metastasis...
December 2016: Seminars in Ultrasound, CT, and MR
https://www.readbyqxmd.com/read/27986169/hepatic-steatosis-etiology-patterns-and-quantification
#7
Ilkay S Idilman, Ilknur Ozdeniz, Musturay Karcaaltincaba
Hepatic steatosis can occur because of nonalcoholic fatty liver disease (NAFLD), alcoholism, chemotherapy, and metabolic, toxic, and infectious causes. Pediatric hepatic steatosis is also becoming more frequent and can have distinctive features. The most common pattern is diffuse form; however, it can present in heterogenous, focal, multinodular, perilesional, perivascular, subcapsular, and lobar forms. Focal steatosis and fat sparing can occur because of the presence of veins of Sappey, pancreaticoduodenal vein, and aberrant right and left gastric veins, which drain into the liver as third inflow...
December 2016: Seminars in Ultrasound, CT, and MR
https://www.readbyqxmd.com/read/27966044/gd-eob-dtpa-enhanced-mri-for-monitoring-future-liver-remnant-function-after-portal-vein-embolization-and-extended-hemihepatectomy-a-prospective-trial
#8
Dominik Geisel, Philip Raabe, Lutz Lüdemann, Maciej Malinowski, Martin Stockmann, Daniel Seehofer, Johann Pratschke, Bernd Hamm, Timm Denecke
OBJECTIVES: To evaluate changes in liver function after right portal vein embolization (PVE) and extended right hemihepatectomy using gadolinium ethoxybenzyl-DTPA-enhanced (Gd-EOB-DTPA) MRI. METHODS: In this prospective trial, 37 patients undergoing PVE were examined before and 14 and 28 days after PVE and 10 days after extended hemihepatectomy using Gd-EOB-DTPA-enhanced MRI. Lobar volume, kinetic growth rate (KGR), relative enhancement (RE) as well as hepatocellular uptake index (HUI) and fat signal fraction (FSF) were calculated for each lobe...
December 13, 2016: European Radiology
https://www.readbyqxmd.com/read/27951418/comparison-of-the-dwi-and-gd-eob-dtpa-enhanced-mri-on-assessing-the-hepatic-ischemia-and-reperfusion-injury-after-partial-hepatectomy
#9
Yu Lu, Pengfei Liu, Peng Fu, Yaodong Chen, Dong Nan, Xiuhua Yang
OBJECTIVE: To compare two different imaging media, diffusion weighted imaging (DWI) with apparent diffusion coefficient (ADC) and Gd-EOB-DTPA-enhanced magnetic resonance imaging (MRI) with perfusion parameters K(trans), K(ep), and relative contrast enhancement index (RCEI), in assessing the liver function via ischemia/perfusion injury (IRI) + partial hepatectomy rat model. METHODS: Rats underwent 0, 30 and 60min of ischemia/reperfusion with 30% of hepatectomy before subjected to Gd-EOB-DTPA-enhanced MRI in addition to (99m)Tc-GSA scintigraphy...
December 9, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27943555/spio-enhanced-mri-is-useful-in-predicting-malignant-potential-of-vascular-transformation-of-hypointense-hypovascular-nodules-on-gd-eob-dtpa-enhanced-mri
#10
Yoshiaki Tanaka, Takahide Nakazawa, Tomoyoshi Inoue, Keiko Yamane, Kousuke Kubota, Haruki Uojima, Juichi Takada, Yusuke Okuwaki, Hisashi Hidaka, Akitaka Shibuya, Shigehiro Kokubu, Keiji Matsunaga, Wasaburo Koizumi
AIM: To examine whether superparamagnetic iron oxide (SPIO)-enhanced magnetic resonance imaging (MRI) can be used to assess the malignant potential of hepatic hypovascular nodules showing hypointensity during the hepatobiliary phase (HBP) on gadoxetic acid (Gd-EOB-DTPA)-enhanced MRI. METHODS: The study included 42 patients with chronic liver disease who had small hypovascular nodules (5-15 mm) showing hypointensity during the HBP on Gd-EOB-DTPA-enhanced MRI. SPIO-enhanced T2-weighted MRI analyzed whether the signal intensity of each nodule was high...
December 11, 2016: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/27937040/multiparametric-or-practical-quantitative-liver-mri-towards-millisecond-fat-fraction-kilopascal-and-function-era
#11
Emre Unal, Ilkay Sedakat Idilman, Muşturay Karçaaltıncaba
New advances in liver magnetic resonance imaging (MRI) may enable diagnosis of unseen pathologies by conventional techniques. Normal T1 (550-620 ms for 1.5 T and 700-850 ms for 3 T), T2, T2* (>20 ms), T1rho (40-50 ms) mapping, proton density fat fraction (PDFF) (≤5%) and stiffness (2-3kPa) values can enable differentiation of a normal liver from chronic liver and diffuse diseases. Gd-EOB-DTPA can enable assessment of liver function by using postcontrast hepatobiliary phase or T1 reduction rate (normally above 60%)...
February 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/27936106/feasibility-of-10-minute-delayed-hepatocyte-phase-imaging-using-a-30%C3%A2-flip-angle-in-gd-eob-dtpa-enhanced-liver-mri-for-the-detection-of-hepatocellular-carcinoma-in-patients-with-chronic-hepatitis-or-cirrhosis
#12
Inhwan Jeon, Eun-Suk Cho, Joo Hee Kim, Dae Jung Kim, Jeong-Sik Yu, Jae-Joon Chung
OBJECTIVES: To compare 10-minute (min) delayed hepatocyte phase imaging (HPI) using a 30° flip angle (FA) (10m-FA30) and 20-min delayed HPI using a 10° FA (20m-FA10) or 30° FA (20m-FA30) in Gd-EOB-DTPA-enhanced MRI in patients with chronic hepatitis or cirrhosis, in terms of lesion-to-liver contrast-to-noise ratio (CNR) for hepatocellular carcinoma (HCC) and detection sensitivity for focal hepatic lesions (FHLs). MATERIALS AND METHODS: One hundred and four patients with 168 HCCs and 55 benign FHLs who underwent Gd-EOB-DTPA-enhanced MRI with 10m-FA30, 20m-FA10, and 20m-FA30 were enrolled...
2016: PloS One
https://www.readbyqxmd.com/read/27920840/unusual-use-of-gd-eob-dtpa-in-mrcp-in-order-to-reveal-the-source-of-bile-leakage-in-a-patient-with-neuroendocrine-tumor-case-report
#13
Rafał Mazur, Aleksander Pawluś, Kinga Szymańska, Mateusz Patyk, Anna Otlewska, Krzysztof Międzybrodzki, Dąbrówka Sokołowska-Dąbek, Eliza Kubicka, Urszula Zaleska-Dorobisz
BACKGROUND: MRCP is the method of choice in diagnosing pathologies of the biliary system. One of them is bile fistulae. They are uncommon but tend to cause many diagnostic problems. The possible way to improve MRCP is using it with intravenous injection of hepatobiliary-specific contrast agents. As it is eliminated via the hepatobiliary system, it can be visualized in the bile ducts and may help to reveal disorders undetected by a standard MRCP. CASE REPORT: We report a case of a 36-year-old woman with leakage in the biliary system which led to creation of a subcutaneous bile reservoir...
2016: Polish Journal of Radiology
https://www.readbyqxmd.com/read/27916773/a-case-of-unresectable-combined-hepatocellular-cholangiocarcinoma-showing-favorable-response-to-lfp-therapy
#14
Sayuri Kato, Yasuto Takeuchi, Nozomu Wada, Yuuki Morimoto, Kenji Kuwaki, Hideki Ohnishi, Shinichiro Nakamura, Hidenori Shiraha, Akinobu Takaki, Hiroyuki Okada
A woman in her 50s was admitted to our hospital because of multiple tumors detected in her liver. She was diagnosed with combined hepatocellular cholangiocarcinoma using gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) and biopsy of the liver tumors. We judged the tumors to be unresectable because they were found in both lobes of the liver, with a tumor thrombus being found in the main left portal vein. The pathological findings showed that the tumors exhibited characteristics of hepatocellular carcinoma...
2016: Nihon Shokakibyo Gakkai Zasshi, the Japanese Journal of Gastro-enterology
https://www.readbyqxmd.com/read/27907063/evaluation-of-focal-liver-reaction-after-proton-beam-therapy-for-hepatocellular-carcinoma-examined-using-gd-eob-dtpa-enhanced-hepatic-magnetic-resonance-imaging
#15
Shigeyuki Takamatsu, Kazutaka Yamamoto, Yoshikazu Maeda, Mariko Kawamura, Satoshi Shibata, Yoshitaka Sato, Kazuki Terashima, Yasuhiro Shimizu, Yuji Tameshige, Makoto Sasaki, Satoko Asahi, Tamaki Kondou, Satoshi Kobayashi, Osamu Matsui, Toshifumi Gabata
BACKGROUND: Proton beam therapy (PBT) achieves good local control for hepatocellular carcinoma (HCC), and toxicity tends to be lower than for photon radiotherapy. Focal liver parenchymal damage in radiotherapy is described as the focal liver reaction (FLR); the threshold doses (TDs) for FLR in the background liver have been analyzed in stereotactic ablative body radiotherapy and brachytherapy. To develop a safer approach for PBT, both TD and liver volume changes are considered clinically important in predicting the extent of damage before treatment, and subsequently in reducing background liver damage...
2016: PloS One
https://www.readbyqxmd.com/read/27872350/simultaneous-acquisition-of-high-contrast-and-quantitative-liver-t1-images-using-3d-phase-sensitive-inversion-recovery-a-feasibility-study
#16
Yasuhiro Fujiwara, Hirotoshi Maruyama, Nobuyuki Kosaka, Yoshiyuki Ishimori
BACKGROUND: Tumor-to-liver contrast is low in images of chronically diseased livers because gadolinium-based hepatocyte-specific contrast agents (Gd-EOB-DTPA) accumulate less to hepatocytes. PURPOSE: To determine whether phase-sensitive inversion recovery (PSIR) could improve the T1 contrasts of Gd-based contrast agents and liver parenchyma and simultaneously provide accurate T1 values for abdominal organs. MATERIAL AND METHODS: The image contrasts of phantoms with different Gd concentrations that were obtained using PSIR were compared to conventional turbo field echo (TFE) results...
November 21, 2016: Acta Radiologica
https://www.readbyqxmd.com/read/27867178/mtf-measurement-of-mr-blurring-in-liver-dynamic-mri-with-gd-eob-dtpa
#17
Masashi Kikuchi, Norio Hayashi, Kazuma Yarita, Kozue Sakata, Koichi Ujita, Satoshi Matsuda, Yuichi Teduka
During the arterial phase acquisition of Gd-EOB-DTPA examinations, use of a small volume of the Gd-EOB-DTPA may make it difficult the encoding center of the k-space, and produce blurring. The previous studies revealed the encoding technique of the k-space was one of the most important reasons. However, there is no report to discuss the reasons with quantitative evaluations. The purpose of this study was to quantitatively evaluate the characteristics of the artifacts using different k-space encoding techniques (centric-view ordering (CVO) and sequential-view ordering (SVO)) for liver dynamic MRI in computer simulation study...
2016: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/27861987/comparison-of-contrast-enhanced-ultrasonograpy-with-gd-eob-dtpa-enhanced-mri-in-the-diagnosis-of-liver-metastasis-from-colorectal-cancer
#18
Kazue Shiozawa, Manabu Watanabe, Takashi Ikehara, Yasushi Matsukiyo, Michio Kogame, Yoshinori Kikuchi, Yuichiro Otsuka, Hironori Kaneko, Yoshinori Igarashi, Yasukiyo Sumino
PURPOSE: To compare contrast-enhanced ultrasonography (CEUS) using Sonazoid with Gd-EOB-DTPA-enhanced MRI (EOB-MRI) in the diagnosis of liver metastases in patients with colorectal cancer. METHODS: A total of 69 patients diagnosed with or suspected of having liver metastasis were enrolled. These hepatic lesions were diagnosed by histopathological examination after surgical resection or based on follow-up using various imaging modalities. The diagnostic accuracies of CEUS and EOB-MRI were compared...
November 12, 2016: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/27858703/chronic-liver-disease-quantitative-mri-vs%C3%A2-ceus-based-microperfusion
#19
M Haimerl, S Poelsterl, L P Beyer, I Wiesinger, C Nießen, C Stroszczynski, P Wiggermann, E-M Jung
PURPOSE: To compare the diagnostic performance of MRI-based T1 relaxometry with dynamic contrast-enhanced ultrasound (CEUS)-based liver microcirculation for evaluation of liver function. MATERIALS AND METHODS: 22 patients underwent Gd-EOB-DTPA-enhanced MRI with T1 relaxometry and previous or consecutive CEUS examinations. A transverse 3D VIBE sequence with an inline T1 calculation was acquired and the reduction rate of T1 relaxation time (rrT1) was evaluated. For CEUS measurements (1-6 MHz), a bolus injection of 1...
November 18, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27842889/limitations-of-gd-eob-dtpa-enhanced-mri-can-clinical-parameters-predict-suboptimal-hepatobiliary-phase
#20
M Kobi, V Paroder, M Flusberg, A M Rozenblit, V Chernyak
AIM: To establish cut-off levels of the clinical parameters, which would predict suboptimal 30 minutes delayed hepatobiliary phase (HBP) with high specificity. MATERIALS AND METHODS: This retrospective study included patients with chronic liver disease who underwent hepatocellular carcinoma screening with Gd-EOB-DTPA-enhanced magnetic resonance imaging (MRI) between 1 January 2011 and 30 November 2014. For each case, HBP was graded as adequate or suboptimal, based on Liver Image Reporting and Data System (LI-RADS) criteria...
January 2017: Clinical Radiology
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