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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...
March 4, 2017: Journal of Clinical Ultrasound: JCU
Koichi Hayano, Gaurav S Desai, Avinash R Kambadakone, Jorge M Fuentes, Kenneth K Tanabe, Dushyant V Sahani
PURPOSE: To evaluate the diagnostic value of computed tomography perfusion (CTP) in the distinction of hepatocellular carcinomas (HCCs) from metastatic liver tumors. MATERIALS AND METHODS: CTP data from 90 liver tumors (HCC 38, metastasis 52) in 31 patients (16 men and 15 women; mean age 60.3 years) were studied. CTP was performed on a 16/64 multidetector-row CT scanner using a 30-s duration cine acquisition after rapid bolus injection (5-7 ml/s) of 50-70 ml of iodinated contrast medium...
December 11, 2013: Cancer Imaging: the Official Publication of the International Cancer Imaging Society
Peter Lamb, Dushyant V Sahani, Jorge M Fuentes-Orrego, Manuel Patino, Asish Ghosh, Paulo R S Mendonça
Assessing the severity of liver fibrosis has direct clinical implications for patient diagnosis and treatment. Liver biopsy, typically considered the gold standard, has limited clinical utility due to its invasiveness. Therefore, several imaging-based techniques for staging liver fibrosis have emerged, such as magnetic resonance elastography (MRE) and ultrasound elastography (USE), but they face challenges that include limited availability, high cost, poor patient compliance, low repeatability, and inaccuracy...
March 2015: IEEE Transactions on Medical Imaging
Anna Lindelius, Hans Pettersson, Johanna Adami, Staffan Törngren, Anders Sondén
PURPOSE: To evaluate the effect of surgeon-performed ultrasound on acute abdomen in specific patient subgroups regarding the diagnostic accuracy and further management. METHODS: Eight hundred patients attending the emergency department at Stockholm South General Hospital, Sweden, for abdominal pain, were randomized to either receive or not receive surgeon-performed ultrasound as a complement to routine management. Patients were divided into subgroups based on patient characteristics, symptoms or first preliminary diagnosis set at the emergency department before randomization...
December 2010: Critical Ultrasound Journal
Diogo Turiani Hourneaux De Moura, Eduardo Guimarães Hourneaux De Moura, Wanderlei Marques Bernardo, Eduardo Turiani Hourneaux De Moura, Felipe I Baraca, André Kondo, Sérgio Eijii Matuguma, Everson Luis Almeida Artifon
Background and Aims: There are no systematic reviews comparing the use of endoscopic retrograde cholangiopancreatography (ERCP)-based brush cytology and forceps biopsy and endoscopic ultrasound (EUS)-guided fine-needle aspiration (FNA) for the diagnosis of malignant biliary stricture; so in this revision, we will compare ERCP against EUS-FNA for tissue diagnosis of malignant biliary stricture. Design: A systematic review was conducted of comparative studies (prospective or retrospective) analyzing EUS and ERCP for tissue diagnosis of malignant biliary stricture...
January 2018: Endoscopic Ultrasound
Malay Sharma, Chittapuram Srinivasan Rameshbabu, Christoph F Dietrich, Praveer Rai, Raghav Bansal
The porta hepatis and hepatoduodenal ligament (HDL) are important anatomical pathways of extension of disease to and from the liver. The imaging of this area is difficult. The role of endoscopic ultrasound (EUS) as an imaging modality for hepatoduodenal ligament has not been established so far. All images in the present study have been generated from a detailed review of real time recordings using the curved linear scanning echoendoscope EG -3830 UT (Pentax Corporation, Tokyo, Japan), coupled with a Hitachi avius and Hitach 7500 processor (Hitachi Aloka Medical, Tokyo Japan)...
May 2018: Endoscopic Ultrasound
Bo Sun, Bing Hu
Intraductal ultrasonography (IDUS) provides real-time, cross-sectional imaging of pancreatobiliary ducts and surrounding structures during endoscopic retrograde cholangiopancreatography using a high-frequency ultrasound (US) transducer. Hence, IDUS has been considered a sensitive tool in the evaluation of suspicious choledocholithiasis and neoplasms, to help distinguish between benign and malignant bile duct strictures or wall thickness, and to assess tumor extension and invasion depth. With the rapid development and enriched choices of sensitive diagnostic modalities include but are not limited to endoscopic US, peroral cholangioscopy, and confocal laser endomicroscopy, it is needed to systematically assess the role of IDUS in the investigation of pancreatobiliary diseases...
September 2016: Endoscopic Ultrasound
Aleksander Pawluś, Marcin Inglot, Mariusz Chabowski, Kinga Szymańska, Małgorzata Inglot, Mateusz Patyk, Joanna Słonina, Filipe Caseiro-Alves, Dariusz Janczak, Urszula Zaleska-Dorobisz
OBJECTIVE: The aim of the study was to compare the elasticity of the spleen in patients with hepatitis B and C but without liver fibrosis with that of healthy subjects using a shear wave elastography (SWE) examination. METHODS: Between December 2014 and December 2015, 35 patients with hepatitis B virus (HBV) infections and 45 patients with (hepatitis C virus) HCV infections and liver stiffness below 7.1 kPa were included in the study. The control group was composed of 53 healthy volunteers without any chronic liver disease, with no abnormal findings in their ultrasound examinations and with an SWE of the liver below 6...
October 2016: British Journal of Radiology
Seung Hee Choi, Woo Kyoung Jeong, Yongsoo Kim, Sanghyeok Lim, Jong Won Kwon, Tae Yeob Kim, Min Yeong Kim, Joo Hyun Sohn
The purpose of this study is to evaluate whether a 5-repetition liver stiffness (LS) measurement as the standard protocol of shear wave elastography (SWE) is comparable to a conventional 10-repetition measurement protocol and to identify factors that influence the reliability of the 5-repetition protocol. A total of 346 patients (mean, 48.0years; range, 15-81years, M:F=192:154) who underwent SWE were enrolled. The median, first quartile, third quartile, and interquartile range divided by the median (IQR/M) of LS measurement were calculated and compared between 5-repetition and 10-repetition protocols...
December 2016: Ultrasonics
Andrzej Nowicki, Katarzyna Dobruch-Sobczak
For centuries tissue palpation has been an important diagnostic tool. During palpation, tumors are felt as tissues harder than the surrounding tissues. The significance of palpation is related to the relationship between mechanical properties of different tissue lesions. The assessment of tissue stiffness through palpation is based on the fact that mechanical properties of tissues are changing as a result of various diseases. A higher tissue stiffness translates into a higher elasticity modulus. In the 90's, ultrasonography was extended by the option of examining the stiffness of tissue by estimating the difference in backscattering of ultrasound in compressed and non-compressed tissue...
June 2016: Journal of Ultrasonography
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July 2016: Journal of Hepatology
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