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https://www.readbyqxmd.com/read/28328941/cynomolgus-monkeys-are-successfully-and-persistently-infected-with-hepatitis-e-virus-genotype-3-hev-3-after-long-term-immunosuppressive-therapy
#1
Noemi Rovaris Gardinali, Juliana Rodrigues Guimarães, Juliana Gil Melgaço, Yohan Britto Kevorkian, Fernanda de Oliveira Bottino, Yasmine Rangel Vieira, Aline Campos de Azevedo da Silva, Douglas Pereira Pinto, Laís Bastos da Fonseca, Leandro Schiavo Vilhena, Edilson Uiechi, Maria Cristina Carlan da Silva, Julio Moran, Renato Sérgio Marchevsky, Oswaldo Gonçalves Cruz, Rodrigo Alejandro Arellano Otonel, Amauri Alcindo Alfieri, Jaqueline Mendes de Oliveira, Ana Maria Coimbra Gaspar, Marcelo Alves Pinto
Epidemiological studies found that hepatitis E virus genotype 3 (HEV-3) infection was associated with chronic hepatitis and cirrhosis in immunocompromised patients. Our study aimed to investigate the relationship between the host immunosuppressive status and the occurrence of HEV-related chronic hepatitis. Here we describe a successful experimental study, using cynomolgus monkeys previously treated with tacrolimus, a potent calcineurin inhibitor immunosuppressant, and infected with a Brazilian HEV-3 strain isolated from naturally infected pigs...
2017: PloS One
https://www.readbyqxmd.com/read/28325356/primary-cutaneous-spindle-cell-b-cell-lymphoma-a-report-of-three-cases-and-review-of-the-literature
#2
Cynthia M Magro, Shabnam Momtahen
Primary cutaneous spindle cell lymphoma is a rare variant of primary cutaneous B-cell lymphoma (PCBCL). Herein, we present 3 cases of primary cutaneous spindle cell B cell lymphoma, 2 males and one female (age range 66-76years). The patients presented with solitary skin lesions, distributed in the head and neck area and chest. The dominant cell size was in the intermediate to large cell size range. While the main cell type was a spindled one, other cells with a nuclear morphology quite typical for a centroblast were noted and as well careful inspection in the three cases revealed a focal residuum of germinal center-like structures...
April 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/28301993/outcome-of-living-donor-liver-transplant-for-hepatocellular-carcinoma-15-year-single-center-experience-in-egypt
#3
Refaat Kamel, Yaser Hatata, Karim Hosny, Ahmed Nabil, Alaa El-Deen Abd-Allah, Aaser Mostafa, Amr Abdel-Aal, Mahmoud Z Elganzoury, Osama Elmalt, Ibrahim Marwan, Adel Hosny
OBJECTIVES: Liver transplant performed for hepatocellular carcinoma must adhere to criteria for the size and number of focal hepatic lesions to lower the incidence of recurrence and achieve survival rates comparable to patients transplanted for other indications. Since the Milan criteria were established in 1996, there have been many less restrictive criteria yielding similar results. Our aim was to identify the prognostic factors for patient survival and for recurrence of hepatocellular carcinoma for patients within and beyond the Milan criteria...
March 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28293255/sparse-codebook-model-of-local-structures-for-retrieval-of-focal-liver-lesions-using-multiphase-medical-images
#4
Jian Wang, Xian-Hua Han, Yingying Xu, Lanfen Lin, Hongjie Hu, Chongwu Jin, Yen-Wei Chen
Characterization and individual trait analysis of the focal liver lesions (FLL) is a challenging task in medical image processing and clinical site. The character analysis of a unconfirmed FLL case would be expected to benefit greatly from the accumulated FLL cases with experts' analysis, which can be achieved by content-based medical image retrieval (CBMIR). CBMIR mainly includes discriminated feature extraction and similarity calculation procedures. Bag-of-Visual-Words (BoVW) (codebook-based model) has been proven to be effective for different classification and retrieval tasks...
2017: International Journal of Biomedical Imaging
https://www.readbyqxmd.com/read/28286979/the-value-of-preoperative-computed-tomography-combined-with-ultrasound-in-the-investigation-of-small-indeterminate-liver-lesions-in-patients-with-colorectal-cancer
#5
Mirna Abraham-Nordling, Emma Öistämö, Thomas Josephson, Fredrik Hjern, Lennart Blomqvist
Background Computed tomography (CT) is used routinely for the preoperative detection of colorectal cancer (CRC) metastases. When small indeterminate focal liver lesions are detected that are too small to characterize (TSTC) on CT, additional imaging is usually needed, resulting in a potential delay in obtaining a complete diagnostic work-up. Purpose To determine the diagnostic accuracy of ultrasound (US) of the liver performed in direct conjunction to CT in the preoperative investigation among patients with newly diagnosed CRC when indeterminate liver lesions were found on CT...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28286878/contrast-enhanced-ultrasound-in-ct-undetermined-focal-liver-lesions
#6
S W Sandrose, S Karstrup, O Gerke, S Rafaelsen
Purpose: The purpose of this study was to examine the diagnostic accuracy of CEUS in the diagnosis of focal liver lesions, which were undetermined at CT scan. Materials and Methods: From January 2010 to December 2010, patients with CT-undetermined focal liver lesions were included in this study. A total of 78 patients were evaluated: 41 men and 37 women, mean age 61.8 years; age range 30-91 years. All patients were examined with GE LOGIQ 9E ultrasound scanners with contrast-specific software, and SonoVue intravenous bolus...
November 2016: Ultrasound International Open
https://www.readbyqxmd.com/read/28283730/-importance-of-diffusion-imaging-in-liver-metastases
#7
P Riffel, S O Schoenberg, J Krammer
CLINICAL/METHODICAL ISSUE: Detection and characterization of focal liver lesions. STANDARD RADIOLOGICAL METHODS: Due to its excellent soft tissue contrast, the availability of liver-specific contrast agents and the possibility of functional imaging, magnetic resonance imaging (MRI) is the method of choice for the evaluation of focal liver lesions. METHODICAL INNOVATIONS: Diffusion-weighted imaging (DWI) enables generation of functional information about the microstructure of a tissue besides morphological information...
March 10, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28283327/pharmacokinetics-of-perfluorobutane-after-intra-venous-bolus-injection-of-sonazoid-in-healthy-chinese-volunteers
#8
Pengfei Li, Susan Hoppmann, Ping Du, Huiling Li, Paul M Evans, Siver A Moestue, Weiyue Yu, Fang Dong, Hongchuan Liu, Lihong Liu
Sonazoid is an ultrasound contrast agent based on microbubbles (MB) containing perfluorobutane (PFB) gas. Sonazoid is approved in Japan, Korea and Norway for contrast-enhanced ultrasonography of focal liver lesions and focal breast lesions (Japan only). The objective of this study was to determine the pharmacokinetics (PKs) and safety of Sonazoid in Chinese healthy volunteers (HVs) and to evaluate the potential for ethnic differences in PKs between Chinese and Caucasian HVs. Sonazoid was administered as an intra-venous bolus injection at the clinical dose of 0...
March 7, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28280859/-ct-and-mri-of-the-liver-when-what-why
#9
J Budjan, S O Schoenberg, U I Attenberger
The detection and differential diagnostic clarification of liver pathologies play an important role in almost all medical disciplines. Because of its superior soft tissue contrast, the availability of liver-specific contrast agents and functional techniques, magnetic resonance imaging (MRI) is the method of choice for the diagnostics of focal and diffuse liver pathologies. In addition to its superior detection and differentiation capabilities, MRI can provide prognostic information and enable early assessment of the therapy response for malignant liver lesions using functional techniques, especially diffusion imaging...
March 9, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28270287/correlation-between-dual-energy-and-perfusion-ct-in-patients-with-focal-liver-lesions-using-third-generation-dual-source-ct-scanner
#10
Jia Xu, Yongchang Zheng, Xuan Wang, Huadan Xue, Shitian Wang, Jixiang Liang, Zhengyu Jin
Objective To compare measurements of dual-energy CT iodine map parameters and liver perfusion CT parameters in patients with focal liver lesions using a third-generation dual-source CT scanner. Methods Between November 2015 and August 2016,33 patients with non-cystic focal lesions of liver were enrolled in this study. CT examinations were performed with a third-generation dual-source CT. The study CT protocol included a perfusion CT and dual-energy arterial and portal venous scans,with a time interval of 15 minutes...
February 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28267700/ultrasonography-for-noninvasive-assessment-of-portal-hypertension
#11
REVIEW
Hitoshi Maruyama, Osamu Yokosuka
Portal hypertension is a major pathophysiology in patients with cirrhosis. Portal pressure is the gold standard to evaluate the severity of portal hypertension, and radiological intervention is the only procedure for pressure measurement. Ultrasound (US) is a simple and noninvasive imaging modality available worldwide. B-mode imaging allows broad applications for patients to detect and characterize chronic liver diseases and focal hepatic lesions. The Doppler technique offers real-time observation of blood flow with qualitative and quantitative assessments, and the application of microbubble-based contrast agents has improved the detectability of peripheral blood flow...
March 9, 2017: Gut and Liver
https://www.readbyqxmd.com/read/28258425/magnetic-resonance-guided-biopsy-of-focal-liver-lesions
#12
Ethan A Smith, Jason J Grove, Abraham F L Van Der Spek, Marcus D Jarboe
Image-guided biopsy techniques are widely used in clinical practice. Commonly used methods employ either ultrasound (US) or computed tomography (CT) for image guidance. In certain patients, US or CT guidance may be suboptimal, or even impossible, because of artifacts, suboptimal lesion visualization, or both. We recently began performing magnetic resonance (MR)-guided biopsy of focal liver lesions in select pediatric patients with lesions that are not well visualized by US or CT. This report describes our experience performing MR-guided biopsy of focal liver lesions, with case examples to illustrate innovative techniques and novel aspects of these procedures...
March 3, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28255790/-contrast-enhanced-ultrasound-ceus-of-the-liver-critical-evaluation-of-use-in-clinical-routine-diagnostics
#13
K Müller-Peltzer, J Rübenthaler, M Reiser, D-A Clevert
CLINICAL/METHODICAL ISSUE: Focal liver lesions are common incidental findings in abdominal ultrasound diagnostics. STANDARD RADIOLOGICAL METHODS: Characterization of focal liver lesions solely based on b‑mode and color duplex is not feasible in all cases. METHODICAL INNOVATIONS: Using contrast-enhanced ultrasound (CEUS) it is possible to dynamically visualize the vascularization of focal liver lesions, which enables the characterization of benign and malignant liver tumors...
March 2, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28255580/clinical-applications-of-contrast-enhanced-ultrasound-in-the-pediatric-work-up-of-focal-liver-lesions-and-blunt-abdominal-trauma-a-systematic-review
#14
REVIEW
Nicolaj Grønbæk Laugesen, Christian Pallson Nolsoe, Jacob Rosenberg
In pediatrics ultrasound has long been viewed more favorably than imaging that exposes patients to radiation and iodinated contrast or requires sedation. It is child-friendly and diagnostic capabilities have been improved with the advent of contrast-enhanced ultrasound (CEUS). The application of CEUS is indeed promising. However, no ultrasound contrast agent manufactured today is registered for pediatric use in Europe. The contrast agent SonoVue(®) has recently been approved by the FDA under the name of Lumason(®) to be used in hepatic investigations in adults and children...
February 2017: Ultrasound International Open
https://www.readbyqxmd.com/read/28246511/ultrasound-guided-percutaneous-core-needle-biopsy-of-abdominal-viscera-tips-to-ensure-safe-and-effective-biopsy
#15
Jin Woong Kim, Sang Soo Shin
Ultrasound-guided percutaneous core needle biopsy (USPCB) is used extensively in daily clinical practice for the pathologic confirmation of both focal and diffuse diseases of the abdominal viscera. As a guidance tool, US has a number of clear advantages over computerized tomography or magnetic resonance imaging: fewer false-negative biopsies, lack of ionizing radiation, portability, relatively short procedure time, real-time intra-procedural visualization of the biopsy needle, ability to guide the procedure in almost any anatomic plane, and relatively lower cost...
March 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28244976/the-role-of-18f-fdg-pet-cect-in-peritoneal-mesothelioma
#16
Julien Dubreuil, Francesco Giammarile, Pascal Rousset, Domenico Rubello, Naoual Bakrin, Guillaume Passot, Sylvie Isaac, Olivier Glehen, Andrea Skanjeti
PURPOSE: The aim of this study was to assess glucose metabolism of multicystic peritoneal mesothelioma and epithelioid peritoneal mesothelioma by fluorine-18 fluorodeoxyglucose (F-FDG)-PET/contrast-enhanced computed tomography (ceCT) and to assess its prognostic impact. MATERIALS AND METHODS: Twenty-three (14 women) patients, without previous treatment, underwent F-FDG-PET/ceCT before peritoneal mesothelioma cytoreductive surgery and intraperitoneal chemotherapy...
April 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28240009/mri-image-processing-based-on-fractal-analysis
#17
Mariya Y Marusina, Alexandra P Mochalina, Ekaterina P Frolova, Valentin I Satikov, Anton A Barchuk, Vladimir I Kuznetcov, Vadim S Gaidukov, Segrey A Tarakanov
Background: Cancer is one of the most common causes of human mortality, with about 14 million new cases and 8.2 million deaths reported in in 2012. Early diagnosis of cancer through screening allows interventions to reduce mortality. Fractal analysis of medical images may be useful for this purpose. Materials and Methods: In this study, we examined magnetic resonance (MR) images of healthy livers and livers containing metastases from colorectal cancer. The fractal dimension and the Hurst exponent were chosen as diagnostic features for tomographic imaging using Image J software package for image processings FracLac for applied for fractal analysis with a 120x150 pixel area...
January 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28224304/visualization-of-draining-vein-in-focal-nodular-hyperplasia-by-superb-microvascular-imaging-report-of-two-cases
#18
Hiroko Naganuma, Hideaki Ishida, Masahiro Ogawa, Katsunori Suzuki
Focal nodular hyperplasia (FNH) is the second most common benign tumor of the liver, and diagnosis and follow-up without invasive procedures are now highly recommended. FNH shows a characteristic vascular structure called "spoke-wheel appearance". However, this appearance relies on the mode of the feeding artery, and the mode of the draining vein has not been sufficiently studied until recently. Superb microvascular imaging (SMI) is a new Doppler technology designed to improve visualization of the blood flow, especially slow flow signals from fine vessels, using a new algorithm...
February 21, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28218196/applications-of-contrast-enhanced-harmonic-endoscopic-ultrasound-on-biliary-focal-liver-lesions-and-vascular-diseases
#19
REVIEW
Jun-Ho Choi, Dong-Wan Seo
Over the last decade, the clinical applications of contrast-enhanced harmonic endoscopic ultrasound (CH-EUS) have increased steadily. The development of second-generation ultrasound contrast agents has allowed superior visualization of the microvasculature and tissue perfusion of the target lesion. This methodology has proven useful in the differential diagnosis of solid pancreatic masses and lymph nodes. In addition, the applicability of CH-EUS has expanded to nonpancreas structures such as biliary, focal liver lesions, and vascular disease...
January 2017: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/28213851/-sonoelastography-in-daily-clinical-routine
#20
J Rübenthaler, K Müller-Peltzer, M Reiser, D Rjosk-Dendorfer, D-A Clevert
CLINICAL ISSUE: In the daily clinical routine characterization of focal lesions using native B‑mode classical ultrasound and color Doppler can be difficult or insufficient; therefore, additional diagnostic information must be taken into consideration. STANDARD RADIOLOGICAL METHODS: Standard radiological methods in the daily clinical routine include native B‑mode ultrasound and color Doppler ultrasound. METHODICAL INNOVATIONS: Using sonoelastography it is possible to evaluate and characterize tissue properties and focal lesions regarding their stiffness to acquire additional information on a noninvasive basis...
February 17, 2017: Der Radiologe
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