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https://www.readbyqxmd.com/read/28646628/focal-liver-lesions-real-time-3-dimensional-contrast-enhanced-ultrasonography-compared-with-2-dimensional-contrast-enhanced-ultrasonography-and-magnetic-resonance-imaging
#1
Jung-Chieh Lee, Kun Yan, San-Kan Lee, Wei Yang, Min-Hua Chen
OBJECTIVES: This study sought to evaluate the application of real-time 3-dimensional (3D) contrast-enhanced ultrasonography (US) to diagnose focal liver lesions and to compare these results with those from 2-dimensional (2D) contrast-enhanced US and contrast-enhanced magnetic resonance imaging (MRI). METHODS: Patients with focal liver lesions were examined by 2D contrast-enhanced US, 3D contrast-enhanced US, and contrast-enhanced MRI for lesion characterization, and biopsies and comprehensive clinical diagnoses served as reference standards...
June 24, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28641911/image-fusion-of-real-time-ultrasonography-with-computed-tomography-factors-affecting-the-registration-error-and-motion-of-focal-hepatic-lesions
#2
Min Woo Lee, Hyun Jeong Park, Tae Wook Kang, Jiwon Ryu, Won-Chul Bang, Bora Lee, Eun Sun Lee, Byung Ihn Choi
Factors affecting the registration error (RE) and motion of focal hepatic lesions (FHLs) in image fusion of real-time ultrasonography (US) with computed tomography (CT) images were prospectively assessed by focusing on respiratory movement and FHL location. Real-time US and pre-acquired CT images at end-inspiration were fused with FHLs for 103 patients. Three-dimensional US data containing FHLs were obtained during end-inspiratory/expiratory phases. Multivariate analysis revealed that diaphragm motion (p < 0...
June 19, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28641910/dependence-of-boiling-histotripsy-treatment-efficiency-on-hifu-frequency-and-focal-pressure-levels
#3
Tatiana D Khokhlova, Yasser A Haider, Adam D Maxwell, Wayne Kreider, Michael R Bailey, Vera A Khokhlova
Boiling histotripsy (BH) is a high-intensity focused ultrasound (HIFU)-based method of mechanical tissue fractionation that utilizes millisecond-long bursts of HIFU shock waves to cause boiling at the focus in milliseconds. The subsequent interaction of the incoming shocks with the vapor bubble mechanically lyses surrounding tissue and cells. The acoustic parameter space for BH has been investigated previously and an inverse dependence between the HIFU frequency and the dimensions of a BH lesion has been observed...
June 19, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28639831/diagnostic-performance-and-confidence-of-contrast-enhanced-ultrasound-in-the-differential-diagnosis-of-cystic-and-cysticlike-liver-lesions
#4
Antonio Corvino, Orlando Catalano, Fabio Corvino, Fabio Sandomenico, Antonella Petrillo
OBJECTIVE: The aims of this study were to assess the diagnostic performance of contrast-enhanced ultrasound (CEUS) in the characterization of atypical cystic and cysticlike focal liver lesions in comparison with conventional US and to determine whether the use of CEUS can reduce the need for further diagnostic workup. SUBJECTS AND METHODS: In a 3-year period 48 patients with 50 atypical cystic and cysticlike lesions found at conventional US underwent CEUS. Diagnostic confirmation was obtained in cytohistopathologic examinations, with other imaging modalities, and in follow-up...
June 22, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28634618/ct-and-mri-findings-in-focal-eosinophilic-infiltration-of-the-liver
#5
Bao-Liang Guo, Qiu-Gen Hu, Fu-Sheng Ouyang, Bin Zhang, Yu-Hao Dong, Xiao-Ning Luo, Zhou-Yang Lian, Shui-Xing Zhang
OBJECTIVES: To investigate the findings of computed tomography (CT) and magnetic resonance imaging (MRI) of focal eosinophilic infiltration (FEI) of the liver. METHODS: A retrospective study including 29 patients with confirmed FEI of the liver was performed. We evaluated the lesions' number, distribution, size, shape, margin, attenuation or signal intensity characteristics, the enhancement pattern, and some special features. Spearman correlation analysis was used to analyze the correlation between the number of lesions and the eosinophil counts in peripheral blood...
June 20, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28626584/enteric-multiplex-pcr-panels-a-new-diagnostic-tool-for-amoebic-liver-abscess
#6
T Weitzel, J Cabrera, R Rosas, L M Noriega, G Schiappacasse, V Vollrath, L Porte
Invasive amoebiasis is a life-threatening infection requiring immediate detection and treatment. However, diagnosis is challenging because conventional methods such as light microscopy and serology are unreliable. Molecular techniques are therefore considered the new diagnostic reference standard, but most of the developed assays are research tools and not widely available. Recently commercial multiplex PCR panels have been introduced which permit the simultaneous detection of multiple enteric pathogens including Entamoeba histolytica in stool samples...
July 2017: New Microbes and New Infections
https://www.readbyqxmd.com/read/28609188/subtraction-images-of-gadoxetic-acid-enhanced-mri-effect-on-the-diagnostic-performance-for-focal-hepatic-lesions-in-patients-at-risk-for-hepatocellular-carcinoma
#7
Sang Hyun Choi, So Yeon Kim, Seung Soo Lee, Ju Hyun Shim, Jae Ho Byun, Seunghee Baek, Moon-Gyu Lee
OBJECTIVE: The purpose of this study is to evaluate the effect of subtraction images of gadoxetic acid-enhanced MRI on the image interpretation of focal hepatic lesions in patients at risk for hepatocellular carcinoma (HCC). MATERIALS AND METHODS: We retrospectively analyzed 255 malignant nodules from 233 patients with chronic hepatitis or liver cirrhosis (187 men and 46 women; mean age, 55.2 years) who underwent preoperative gadoxetic acid-enhanced MRI and surgical resection...
June 13, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28607606/diagnostic-value-of-gd-eob-dtpa-mri-for-hepatocellular-adenoma-a-meta-analysis
#8
Yongfei Guo, Wenjuan Li, Zhinan Xie, Yi Zhang, Yijie Fang, Wenli Cai, Guobin Hong
Objective: This study aimed to systematically review the gadoxetic acid-enhanced magnetic resonance imaging (Gd-EOB-DTPA-MRI) findings of hepatocellular adenoma (HCA), especially focusing on the diagnostic value of low signal intensity (SI) in the hepatocyte-phase (HBP) for differentiating HCA from focal nodular hyperplasia (FNH). Methods: A thorough literature search was conducted in PubMed, Excerpta Medica Database (EMBASE) and China National Knowledge Infrastructure databases (CNKI) to identify studies evaluating Gd-EOB-DTPA-MRI presentations of HCA...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28605060/modelling-the-benefits-and-harms-of-surveillance-for-hepatocellular-carcinoma-information-to-support-informed-choices
#9
Eleanor J Taylor, Rebecca L Jones, J Ashley Guthrie, Ian A Rowe
Surveillance by ultrasonography for hepatocellular carcinoma (HCC) for individuals with cirrhosis is recommended. There is debate regarding the effectiveness of surveillance in reducing mortality and there is little information on the harms available to patients considering surveillance. The aim of this study was to provide estimates of both the benefit and harms of surveillance. A Markov model was built to simulate outcomes of individuals entering surveillance. Following identification of a focal lesion by ultrasound surveillance further investigations were defined by the EASL-EORTC recall policy...
June 12, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28583643/utility-of-t1-weighted-mri-as-a-predictor-of-liver-lesion-visibility-on-ultrasound-a-clinical-tool-to-determine-feasibility-of-ultrasound-guided-percutaneous-interventions
#10
Timothy L Miao, Ania Z Kielar, Rebecca M Hibbert, Nicola Schieda
PURPOSE: To determine the utility of fat-suppressed T1-weighted gradient recalled echo (FS-T1W-GRE) MRI to predict visibility of focal liver lesions (FLL) on abdominal ultrasound (US). MATERIALS AND METHODS: With IRB approval, between 2010 and 2013, 109 patients (28.4% females, age 66.9±10.9years) with 177 FLL (hepatocellular carcinoma=132, metastases=44, other=1) underwent MRI and prospective, radiologist-performed treatment-planning US (to determine eligibility for US-guided ablation)...
May 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28583364/a-pictorial-review-of-hepatobiliary-magnetic-resonance-imaging-with-hepatocyte-specific-contrast-agents-uses-findings-and-pitfalls-of-gadoxetate-disodium-and-gadobenate-dimeglumine
#11
REVIEW
Elena P Scali, Triona Walshe, Hina Arif Tiwari, Alison C Harris, Silvia D Chang
Magnetic resonance imaging (MRI) has a well-established role as a highly specific and accurate modality for characterizing benign and malignant focal liver lesions. In particular, contrast-enhanced MRI using hepatocyte-specific contrast agents (HSCAs) improves lesion detection and characterization compared to other imaging modalities and MRI techniques. In this pictorial review, the mechanism of action of gadolinium-based MRI contrast agents, with a focus on HSCAs, is described. The clinical indications, protocols, and emerging uses of the 2 commercially available combined contrast agents available in the United States, gadoxetate disodium and gadobenate dimeglumine, are discussed...
June 2, 2017: Canadian Association of Radiologists Journal, Journal L'Association Canadienne des Radiologistes
https://www.readbyqxmd.com/read/28582472/18f-fdg-silicon-photomultiplier-pet-ct-a-pilot-study-comparing-semi-quantitative-measurements-with-standard-pet-ct
#12
Lucia Baratto, Sonya Young Park, Negin Hatami, Guido Davidzon, Shyam Srinivas, Sanjiv Sam Gambhir, Andrei Iagaru
PURPOSE: To evaluate if the new Discovery Molecular Insights (DMI) PET/CT scanner provides equivalent results compared to the standard of care PET/CT scanners (GE Discovery 600 or GE Discovery 690) used in our clinic and to explore any possible differences in semi-quantitative measurements. METHODS: The local Institutional Review Board approved the protocol and written informed consent was obtained from each patient. Between September and November 2016, 50 patients underwent a single 18F-FDG injection and two scans: the clinical standard PET/CT followed immediately by the DMI PET/CT scan...
2017: PloS One
https://www.readbyqxmd.com/read/28562394/diagnostic-accuracy-of-contrast-enhanced-ultrasound-for-the-differential-diagnosis-of-hepatocellular-carcinoma-esculap-versus-ceus-li-rads
#13
Barbara Schellhaas, Ruediger S Görtz, Lukas Pfeifer, Christian Kielisch, Markus F Neurath, Deike Strobel
OBJECTIVE: A comparison is made of two contrast-enhanced ultrasound (CEUS) algorithms for the diagnosis of hepatocellular carcinoma (HCC) in high-risk patients: Erlanger Synopsis of Contrast-enhanced Ultrasound for Liver lesion Assessment in Patients at Risk (ESCULAP) and American College of Radiology Contrast-Enhanced Ultrasound-Liver Imaging Reporting and Data System (ACR-CEUS-LI-RADSv.2016). PATIENTS AND METHODS: Focal liver lesions in 100 high-risk patients were assessed using both CEUS algorithms (ESCULAP and CEUS-LI-RADSv...
May 30, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28551024/eus-guided-fine-needle-core-liver-biopsy-using-a-novel-19g-needle-with-modified-one-pass-one-actuation-wet-suction-technique
#14
Jose Nieto, Huda Khaleel, Youssef Challita, Melissa Jimenez, Todd H Baron, Laura Walters, Kelli Hathaway, Ketul Patel, Ali Lankarani, Michael Herman, David Holloman, Sammy Saab
BACKGROUND AND AIMS: EUS-guided fine-needle core biopsy is a safe and effective technique for diagnosis of focal liver lesions. However, data are limited in its role in parenchymal disease. We evaluated the utility of EUS-guided parenchymal liver biopsies (EUS-LB) with a modified one pass wet suction technique (EUS-MLB) in patients with unexplained increase in liver associated tests. METHODS: We retrospectively evaluated the safety and efficacy of EUS-MLB in patients referred for EUS to evaluate for biliary obstruction and pancreatic disorders, but with associated unexplained liver tests...
May 24, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28547764/visibility-of-focal-liver-lesions-comparison-between-kupffer-phase-of-ceus-with-sonazoid-and-hepatobiliary-phase-of-gadoxetic-acid-enhanced-mri
#15
Woo Young Yang, Hee Sun Park, Young Jun Kim, Mi Hye Yu, Sung Il Jung, Hae Jeong Jeon
BACKGROUND: To investigate the agreement between Kupffer phase of Sonazoid contrast-enhanced sonography (CEUS) and hepatobiliary phase of gadoxetic acid-enhanced MRI in the evaluation of focal liver lesions (FLLs). METHODS: One hundred fifty-four FLLs in 154 patients who underwent both Sonazoid CEUS and gadoxetic acid-enhanced liver MRI were included in this retrospective study. FLL visibility on the Kupffer-phase images was graded as one (invisible or isoenhancing), two (vaguely visible or vaguely hypoenhancing), or three (clearly visible or clearly hypoenhancing), and that on the hepatobiliary-phase images of MRI was graded as one (invisible or hyper/isointense), two (vaguely visible or weakly hypointense), or three (clearly visible or strongly hypointense)...
May 26, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28531871/echinococcosis-mimicking-liver-malignancy-a-case-report
#16
Radek Pohnan, Miroslav Ryska, Vladislav Hytych, Radek Matej, Petr Hrabal, Jiri Pudil
INTRODUCTION: Human Alveolar Echinococcosis - Alveolar Hydatid disease (AE) is an omitted zoonotic infection presenting with focal liver lesions. Cause of AE is a larval stage of Echinococcus multilocularis tapeworms. CASE PRESENTATION: In this report an extraordinary case of a 38 year-old female examined due to 2 liver tumors and 2 pulmonary nodules is described. The patient underwent pulmonary and liver surgery for suspected advanced cholangiocellular carcinoma and surprisingly AE was found...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28527201/contrast-enhanced-ultrasound-ceus-prediction-of-focal-liver-lesions-in-patients-after-liver-transplantation-in-comparison-to-histopathology-results
#17
J Rübenthaler, K J Paprottka, E Hameister, K Hoffmann, N Joiko, M Reiser, R Rjosk-Dendorfer, D A Clevert
PURPOSE: To investigate the value of contrast-enhanced ultrasound (CEUS) in histologic prediction of focal liver lesions after liver transplantation. MATERIALS AND METHODS: 10 focal liver lesions in 10 patients after liver transplantation were scanned using CEUS and the CEUS results were compared with the histopathological results. RESULTS: Among 10 focal liver lesions, 7 proofed to be histopathological benign and 3 lesions proofed to be histopathological malignant...
May 19, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28506367/immunohistochemistry-in-the-diagnosis-of-hepatocellular-carcinoma
#18
REVIEW
Won-Tak Choi, Sanjay Kakar
Hepatocellular carcinoma (HCC) can be difficult to distinguish from its mimics, including metastatic tumor, benign hepatocellular lesion, and high-grade dysplastic nodule, especially when limited biopsy material is available. Hence, the judicious use of immunohistochemical stains is necessary to establish a correct diagnosis. This article describes advantages and disadvantages of immunohistochemical markers that are most commonly used to distinguish between these lesions. Diagnostic workup of malignant liver mass (HCC and its histologic variants vs metastatic tumor) as well as well-differentiated hepatocellular lesion (well-differentiated HCC vs focal nodular hyperplasia vs hepatocellular adenoma) is also discussed...
June 2017: Gastroenterology Clinics of North America
https://www.readbyqxmd.com/read/28497069/characterization-of-focal-liver-lesions-indistinctive-on-b-mode-ultrasound-benefits-of-contrast-enhanced-ultrasound
#19
Yi Dong, Feng Mao, Jiaying Cao, Peili Fan, Wen-Ping Wang
Aim. The aim of this prospective study was to evaluate the additional value of contrast-enhanced ultrasound (CEUS) in identifying and characterizing of focal liver lesions (FLLs) that are indistinctive on B mode ultrasound (BMUS). Methods. The study focused on 70 consecutive patients (male 46, female 24; mean age, 53.1 years ± 10). All lesions were detected by MRI but could not be clearly visualized by BMUS. CEUS was performed by injected SonoVue® (Bracco Imaging Spa, Milan, Italy) as a quick bolus into the antecubital vein...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28495460/dual-energy-computed-tomography-for-the-detection-of-focal-liver-lesions
#20
K N Lago, J Vallejos, C Capuñay, E Salas, E Reynoso, J B Carpio, P M Carrascosa
OBJECTIVE: To qualitatively and quantitatively explore the spectral study of focal liver lesions, comparing it with the usual polychromatic assessment with single-energy computed tomography. MATERIAL AND METHODS: We prospectively studied 50 patients with at least one focal liver lesion who were referred for abdominal multidetector computed tomography with intravenous contrast material. The portal phase was acquired with dual energy sources. The density of the lesions and of the surrounding liver parenchyma was measured both in the baseline polychromatic acquisition and in the posterior monochromatic reconstructions at 40 keV, 70 keV, and 140 keV...
May 8, 2017: Radiología
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