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CT of hepatocellular carcinoma in non-alcoholic fatty liver disease: imaging characteristics and inter-rater agreement

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Hepatoma Research 2019年第10期5卷 42-52页

作者： Ishan Garg Scott m.Thompson Shannon P.Sheedy taofic m.unajjed Ashish Khandelwal Eric C.Ehman Candice A.Bookwalter Sudhakar K.Venkatesh Department of Radiology Mayo Clinic College of MedicineRochesterMN 55905USA Department of Laboratory medicine and Pathology Mayo Clinic College of MedicineRochesterMN 55905USA

Aim:To determine the computed tomography(CT)features of non-alcoholic fatty liver disease(NAFLD)associated hepatocellular carcinoma(HCC).methods:In this institutional review board approved study,we reviewed 38 patients with NAFLD(68.4%male;mean age 63 years)with histology confirmed HCC and triphasic liver *** images were independently reviewed by four readers blinded to clinical and pathology *** reviewers assessed HCC for arterial phase hyper enhancement(APHE),portal venous phase washout(PVWO),delayed phase washout(DPWO),and enhancing *** of cirrhotic morphology and portal hypertension(PH)were also *** final CT features were determined by majority and a fifth reader reviewed cases lacking ***-rater agreement was determined by prevalence-adjusted ***:mean HCC size was 3.6±2.8 cm(range,1.1-16.0 cm).The HCCs showed APHE in 92.1%,PVWO in 55.3%,DPWO in 81.6%,and enhancing capsule in 44.7%.Cirrhotic morphology was present in 65.8%and PH in 63.2%.Inter-rater agreement was moderate to almost perfect for APHE(0.74-1.0),cirrhosis(0.79-0.89),and PH(0.79-0.95),weak to perfect for DPWO(0.47-0.95)and poor for PVWO(0-0.42). ;Conclusion:NAFLD associated HCC demonstrate less frequent portal venous washout on CT which may affect their imaging diagnosis.

关键词： Hepatocellular carcinoma computed tomography fatty liver inter-rater agreement non-alcoholic fatty liver disease

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Piezometry of the Aquifer of the Continental Terminal in the Borehole Fields of Godomey and Ouedo for the Delimitation of the Protection Areas around Boreholes of Ouedo

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Open Journal of Geology 2017年第12期7卷 1786-1800页

作者： Crépin Zevounou Abdoukarim Alassane Christophe Kaki taofic Bacharou Joanèle Koudemekpo Civil Engineering (GC) Polytechnic School of Abomey-Calavi (EPAC/UAC) Abomey-Calavi Republic of Benin Department of Earth Sciences Faculty of Sciences and Technics (FAST/UAC) Abomey-Calavi Republic of Benin

Groundwater is naturally protected against pollution through its filter layer which is the soil. However, the development of human activities, including the use of chemicals, gradually reduces the purifying action of this layer. It is therefore essential to develop strategies for a better management of this precious resource. The general objective of this work is to establish the piezometry of the aquifer of the Continental Terminal in the borehole fields of Godomey and Ouedo to improve the delineation of protection perimeters around the boreholes of Ouedo. The study was conducted using three methods that were the FCR method, the infiltration method and the method of Krijgsman and Lobo-Ferreira. The exploitation of the piezometric map enabled to obtain the hydraulic gradient of 0.165%. The radii of immediate protection’s perimeters (PPI) range from 55.653 m to 99.755 m. The retained close protection’ perimeters (PPR) and remote protection’s perimeters (PPE) have an ellipsoidal shape. Their upstream radii range from 220.72 m to 390 m for PPR and from 356.52 m to 659.52 m for PPE;the downstream radii range from 213.06 m to 387.25 m for PPR, and from 321.28 m to 603.97 m for PPE;the radii perpendicular to the flow direction to the right of each borehole vary from 212.58 m to 381.16 m for PPR, and from 336.11 m to 602.67 m for PPE. Probable risks identified for groundwater contamination in these protection areas are the discharge of domestic waste water, solid wastes and the use of chemical fertilizers and pesticides in farming practices.

关键词： Groundwater Anthropogenic Activities Protection Perimeter Piezometry

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