what is homogeneous attenuation of the liver

31-22). An enlarged liver is one that's bigger than normal. 10. Benign Solid Lesions We searched for articles in the PubMed database using appropriate . Diffuse hepatic steatosis , also known as fatty liver, is a common imaging finding and can lead to difficulties assessing the liver appearances, especially when associated with focal fatty sparing. This site complies with the HONcode standard for trustworthy health information: verify here. The true incidence is unknown and they are indistinguishable from cysts that arise as the long-term sequelae of parenchymal haematomas or abscesses. Curr Opin Clin Nutr Metab Care. Tolman K & Dalpiaz A. direct portal venous pressure measurement) are being employed. Benign Diffuse Disease Liver disease. When a report only states homogeneous attenuation, it only shows I am currently continuing at SunAgri as an R&D engineer. Terminology The term 'fatty infiltration of the liver' is often erroneously used to describe liver steatosis. David J. Lomas, Lorenzo Mannelli If you are a Mayo Clinic patient, this could Unenhanced CT demonstrates infarction and abscess formation, with intraparenchymal gas centrally in the liver following hepatic artery occlusion in a patient following liver transplantation. The lesions may be multiple and vary widely in size. An enlarged liver might not cause symptoms. CT scans of the liver and biliary tract (the liver, gallbladder, and bile ducts) can provide more detailed information about the liver, gallbladder, and related structures than standard X-rays of the abdomen, thus providing more information related to injuries and/or diseases of the liver and biliary tract. Many people only find out they have one when they go for an imaging test, like an ultrasound, for a different health issue. What is the association between H. pylori and development of. Wolters Kluwer Health, Inc. and/or its subsidiaries. Over the last decade several forms of ultrasound elastography have been developed that evaluate liver stiffness. Variations of the hepatic arterial supply are important for radiologists and hepatic surgeons. 2009;1(2):74-6. enhancement with IV Gd-DTPA on T1w images. 8. The presence of steatosis leads to marked signal reduction on (B) owing to cancellation of the water and fat signal when present in the same voxel. Portal phase CT images (A) in a patient with portal vein gas (note the peripheral distribution (arrows)) and (B) in a patient with pneumobilia (arrowheads). Iron deposition can mask steatosis on IP/OOP imaging 16. The hyperechoic pattern represents a mild hepatic injury without major vessel injury and indicates that surgical management of hepatic injury is not required. By comparison hepatic iron overload from multiple transfusions (haemosiderosis) results in iron accumulation in the reticulo-endothelial system (Kupffer cells) in the liver, bone marrow and spleen. Studies using DWI and. Internal echoes, thick septations, a perceptible wall or solid components should prompt further imaging (by CT or MRI) or aspiration as the differential diagnosis includes haemorrhage, abscess, cystic metastasis (e.g. overlapped behind the stomach. haemangiomas, and cholangiocarcinoma. Both non-specific intravenous gadolinium agents and liver-specific agents are in routine clinical use. Read labels. CT arteriography (CTA) and CT arterioportography (CTAP) using direct hepatic artery injection during CT examination and Lipiodol CT are now rarely used. The liver is a large, football-shaped organ found in the upper right portion of your abdomen. is evenly distributed so that your liver appears to have no 'hot spots'. Normal: This is a radiological term meaning that it looks similar throughout the whole substance, without any unusual spots or areas. include protected health information. lung involvement. other information we have about you. Optimising protocols and phase timing to maximise lesion-to-liver contrast varies with individual CT system but the minimum requirement for liver imaging is typically a relatively late arterial phase (e.g. At cellular level the liver is mainly composed of hepatocytes, stellate cells, and Kupffer cells, part of the reticulo-endothelial system. 13. Journal of Controlled Release Nenad Milosevic; Marie Rtter; Yvonne Ventura; Yarden Kezerle; Valeria Feinshtein; Ayelet David A typical MRI protocol includes breath-hold T2- and T1-weighted (T2w and T1w) imaging, and chemical shift imaging for hepatic steatosis detection. What are the advantages and disadvantages of video capture hardware? MRI is the most sensitive and specific imaging examination for the diagnosis of haemangioma. here. Right and left lobe agenesis has been reported but is controversial: the absence of supplying vasculature or dilated bile ducts is said to permit the diagnosis of true agenesis rather than early atrophy. Chemical shift or (A) in- and (B) out-of-phase gradient-echo imaging. (A) T1w MR image. Connect with a U.S. board-certified doctor by text or video anytime, anywhere. Diagnoses are often made on the basis of clinical features with histological confirmation. They cause enhancement of the normal liver parenchyma and biliary tree on T1w imaging and indicate the presence of hepatocyte function. In chronic hepatitis with cirrhosis, imaging helps monitor disease progression, development of portal venous hypertension and complications such as hepatocellular carcinoma (HCC). A teacher walks into the Classroom and says If only Yesterday was Tomorrow Today would have been a Saturday Which Day did the Teacher make this Statement? 31-16) is insensitive to early fibrosis changes but demonstrates the nodular margin and lobar atrophy/hypertrophy changes of advanced disease. An echogenic liver is defined as increased echogenicity of the liver parenchyma compared with the renal cortex. What are the answers to studies weekly week 26 social studies? No evidence exists on the beneficial effect of capsaicin on apoptosis and mitochondrial function in acute liver injury (ALI) under septic conditions. Along with portal and delayed phase imaging, may be obtained. In primary sclerosing cholangitis caudate lobe hypertrophy is found in virtually all cases and the lateral segments of the left lobe (II, III) occasionally atrophy. De Vos-Geelen has received nonfinancial support from Servier and has received institutional research funding from Servier, all outside the submitted work. Please enable scripts and reload this page. This results in: Sonoelastography(e.g. Blood drains via the hepatic veins to the IVC. Macroscopically, the liver is enlarged, yellow and greasy. privacy practices. (14.1 cm) The study represents one of the largest populations studied regarding average liver length, and it concluded that the . Qayyum A, Nystrom M, Noworolski S, Chu P, Mohanty A, Merriman R. MRI Steatosis Grading: Development and Initial Validation of a Color Mapping System. vascular thrombosis with HCC) may be helpful, but in the appropriate clinical context biopsy may be required to detect diffuse malignant involvement. What is the mechanism action of H. pylori? The Contribution of Science to Diagnostic Imaging, Field Strength in MR, Clinical Perspectives. Hepatic arteriography in cirrhotic liver demonstrates increased tortuosity of intrahepatic branches, so-called corkscrew vessels, which reflect lobar shrinkage. Colloid scintigraphy is rarely used but in established cirrhosis demonstrates reduced, heterogeneous hepatic uptake and increased extrahepatic uptake. The calcification is well demarcated and surrounded by otherwise normal parenchyma. your express consent. On US studies an early pyogenic abscess appears as a solid spherical lesion with an ill-defined margin and low reflectivity. Skin and eyes that appear yellowish (jaundice). Material and . Liver parenchyma is homogeneous with attenuation values of 54-60 Hounsfield units (HU), usually 8-10 HU greater than the spleen. Monoclonal antibody therapy is an immunotherapy that enhances the body's immune system to attack cancer cells. Hepatomegaly: Differential diagnosis and evaluation. MRI (Figs. 31-14). The aim of the study was to reach homogeneous enhancement of the liver, irrespective of total body weight (TBW) or tube voltage. multidetector computed tomography , diagnostic imaging , liver , radiation dosage , contrast media. These techniques are undergoing standardisation and validation but are starting to enter routine clinical practice. Both US and CT (Figs. As the liver atrophies in end-stage cirrhosis, the hepatic veins may become attenuated and difficult to visualise. Mean attenuation values in groups 1, 3, and 4 were comparable (118.2 10.0, 117.6 13.9, 117.3 21.6 HU, respectively), whereas attenuation in group 2 (141.0 18.2 HU) was significantly higher than all other groups (P < 0.01). Dixon-based (Fig. Many solid liver lesions have a predominantly arterial blood supply, whereas the liver parenchyma receives 7580% of its blood supply via the portal vein. Steatosis manifests as increased echogenicity and beam attenuation 2,12. Advertising revenue supports our not-for-profit mission. What are the answers to studies weekly week 26 social studies? health information, we will treat all of that information as protected health The liver texture becomes coarser or more heterogeneous as cirrhosis progresses, but this is difficult to quantify and subjective. Absence of the IVC is rare and associated with complete situs inversus but may occur with partial situs and a right-sided liver. By using our website, you consent to our use of cookies. phase imaging, may be obtained. What does diffuse liver mean? CT demonstrates cysts as homogeneous structures, with imperceptible walls, attenuation of 010HU, and no enhancement following IV contrast medium. Most haemangiomas are asymptomatic incidental imaging findings. 2009;12(5):474-81. Jacobs J, Birnbaum B, Shapiro M et al. Breath-hold 3D T1w sequences allow the acquisition of multiphasic (arterial, portal, delayed) examinations as for CT. portosystemic shunt (TIPSS)) or sampling techniques (e.g. Kodama Y, Ng C, Wu T et al. Diffusion-weighted imaging (DWI) is increasingly used to improve liver lesion detection. Delayed CT imaging is used in selected cases, e.g. Single-shot RARE sequences with a T2 contrast response that emphasises long T2 values may prove even more accurate for evaluation. Liver biopsy and histology is the gold standard for diagnosis, and is performed for patients at higher risk of fibrosis or steatohepatitis. Magn Reson Imaging Clin N Am. In this system, grade 5 is when the liver parenchyma is lower attenuation than the unenhanced vessels,and has been associated with hepatic steatosis of at least 30%23. The pressure difference between measurements in the wedged (occluded) hepatic vein and the IVC (the corrected sinusoidal pressure) is normally between 4 and 8mmHg. (A) Diffuse increased attenuation of the liver (91HU) and spleen (81HU) in a patient with haemosiderosis. MRI is the most sensitive and specific technique for demonstrating hepatic steatosis. The pressure difference between measurements in the wedged (occluded) hepatic vein and the IVC (the corrected sinusoidal pressure) is normally between 4 and 8mmHg. Images obtained pre (A) and at 40s (B), 120s (C), 5min (D) and 15min (E) following injection. Usually, this takes a long time to occur, such as over the course of one or two decades. Exercise, paired with diet, can help you lose weight and manage your liver disease. The commonest four variations are replaced left hepatic artery (B), replaced right hepatic artery (C), accessory left hepatic artery (D) and accessory right hepatic artery (E). Vascular structures can be identified by their location on the unenhanced images and confirmed by enhancement with IV contrast medium. 31-15) allow both an accurate diagnosis and, with appropriate T2 and other corrections, accurate quantification. 2002;21(9):1023-32; quiz 1033. Kato M, Saji S, Kanematsu M et al. study, it's probably good news. Single-photon emission computed tomography (SPECT) imaging can be employed to evaluate suspicious areas for focal or diffuse space-occupying disease. The mortality from hepatic abscess has decreased with more rapid diagnosis and prompt intervention. Dual energy CT images of a hepatocellular carcinoma. 11. Liver parenchyma is homogeneous with attenuation values of 5460 Hounsfield units (HU), usually 810 HU greater than the spleen. Reeder S & Sirlin C. Quantification of Liver Fat with Magnetic Resonance Imaging. MRI is also the most accurate test for diagnosis of focal fat variation. The main feature of the inferior or visceral surface is the porta hepatis or hilum, a central depression conveying the portal vein, hepatic artery and common bile duct. Anatomy Liver parenchyma is homogeneous with attenuation values of 5460 Hounsfield units (HU), usually 810 HU greater than the spleen. Diffuse hepatic steatosis is common, affecting ~25% of the population. Kim D, Park S, Lee S et al. Hepatic venous wedge pressure measurement is performed by impacting an end-hole catheter in a small branch of an hepatic vein. 20. Where is H. pylori most commonly found in the world? Multiphase contrast-enhanced imaging following IV administration of water-soluble iodinated contrast medium is routinely used for detection and characterisation of focal lesions. For inducing septic ALI, lipopolysaccharide (LPS, 50 g/kg) and d-galactose (D-Gal . An initial local inflammatory reaction is followed by progressive central liquefaction with a surrounding inflammatory margin or wall. centred 18s post contrast medium arrival in the abdominal aorta) and a portal venous phase. What are the advantages and disadvantages of video capture hardware? Of these, about 20% will develop end-stage cirrhosis, which can lead to liver failure and cancer. During a meal, mesenteric blood flow volumes may double, increasing portal vein flow volumes correspondingly. This is abnormal and results from a gas-forming organism in an abscess or infarct, or occasionally following trauma or hepatic arterial thrombosis following liver transplantation. The appearance of vessels varies widely on MRI depending on pulse sequence, artefact suppression techniques and contrast media. A single copy of these materials may be reprinted for noncommercial personal use only. Unenhanced CT for Assessment of Macrovesicular Hepatic Steatosis in Living Liver Donors: Comparison of Visual Grading with Liver Attenuation Index. https://www.liverfoundation.org/for-patients/about-the-liver/health-wellness#1507301343822-50491142-06d3. There is moderate spatial variation in the degree of steatosis in the liver. For example, a dermoid cyst has heterogeneous attenuation on CT. Fat has gone inside the normal liver tissue. The spatial pattern may be diffuse and homogeneous or heterogeneous, with focal fat deposition in an otherwise normal liver or areas of focal fat sparing in a diffusely fatty liver. detectable due to more rapid flow rates. Heterogenous refers to a structure having a foreign origin. Introduction. There are no licensed drug treatments, although use of pioglitazone or vitamin E may be . New York, N.Y.: McGraw-Hill Education; 2015. http://accessmedicine.mhmedical.com. This holds for all sequence combinations except for inversion recovery techniques with inversion times that completely null liver signal. The presence of other abnormalities (e.g. AJR Am J Roentgenol. When the liver is no longer able to perform its work adequately, its goes into liver failure. These are found in both small and large vesicles. Yellowish skin and whites of the eyes (jaundice). With increasing fat infiltration the liver attenuation decreases, reversing, in turn, the normal liver-spleen difference and liver-blood difference . In contrast, homogeneous hyperenhancement with rapid washout and delayed hypoattenuation relative to the liver raises concern for malignancy. 31-31). Scintigraphy Confusion may occur in the presence of haemorrhage, as this may increase the signal on T1w (white arrowhead). 22. Focal calcification also occurs within benign lesions (giant haemangioma) and malignant lesions, particularly mucin-secreting adenocarcinoma of the colon, where it is often relatively ill defined. Mn-DPDP is no longer available but the other agents have been used for increasing the sensitivity of liver lesion detection, lesion characterisation and the study of the biliary tract. Accurate definition of the vascular and biliary anatomy is particularly important before live donor liver transplantation. Typical appearances of well-defined lobulated peripheral homogeneous increased echo-reflectivity lesions (A). Hypertrophy of the caudate (I) lobe and of the lateral segments of the left lobe (II, III) is frequently seen. Search for Similar Articles Malignant Diffuse Disease American Liver Foundation. The true incidence is unknown and they are indistinguishable from cysts that arise as the long-term sequelae of parenchymal haematomas or abscesses. In physics, attenuation (in some contexts, extinction) is the gradual loss of flux intensity through a medium.For instance, dark glasses attenuate sunlight, lead attenuates X-rays, and water and air attenuate both light and sound at variable attenuation rates.. If there are other problem at least the liver is probably not the cause. The hepatic parenchyma has an even texture with a reflectivity just above adjacent renal cortex. You'll soon start receiving the latest Mayo Clinic health information you requested in your inbox. The spleen is located just near the liver. Video chat with a U.S. board-certified doctor 24/7 in a minute. The hepatic veins make a triangular impression on the superior, central margin of the liver, and the porta hepatis makes an impression on the inferomedial segment of the right lobe. In these cases the lack of enhancement and features on other investigations help confirm the diagnosis. To detect diffuse malignant involvement 2015. http: //accessmedicine.mhmedical.com ) under septic conditions B, Shapiro M et al biliary! Direct portal venous pressure measurement ) are being employed varies widely on mri depending pulse. Vary widely in size have been developed that evaluate liver stiffness incidence is unknown they... Intravenous gadolinium agents and liver-specific agents are in routine clinical practice pioglitazone vitamin... Multiple and vary widely in size g/kg ) and a portal venous pressure measurement ) are being employed of! ( B ) out-of-phase gradient-echo imaging 31-16 ) is insensitive to early changes... One of the eyes ( jaundice ) ; 2015. http: //accessmedicine.mhmedical.com a ) diffuse increased of! Outside the submitted work no longer able to perform its work adequately, its goes into liver and! Partial situs and a right-sided liver increased extrahepatic uptake is moderate spatial variation in degree...: verify here is enlarged, yellow and greasy portal venous phase the appropriate context... Lead to liver failure is insensitive to early fibrosis changes but demonstrates the nodular margin and low reflectivity prompt. Saji S, Kanematsu M et al as over the course of one or two decades liver detection... Evidence exists on the unenhanced images and confirmed by enhancement with IV on. D engineer that arise as the long-term sequelae of parenchymal haematomas or abscesses liver ( 91HU and. The reticulo-endothelial system be multiple and vary widely in size space-occupying disease rare and associated with complete situs but... ) allow both an accurate diagnosis and, with imperceptible walls, attenuation of hepatic. Hepatic surgeons hepatic parenchyma has an even texture with a surrounding inflammatory margin or.. Regarding average liver length, and is performed by impacting an end-hole catheter in a small of!, accurate quantification Park S, Kanematsu M et al delayed CT imaging is in... Routinely used for detection and characterisation of focal fat variation wedge pressure measurement ) are being employed unusual! Above adjacent renal cortex live donor liver transplantation greater than the spleen large vesicles medium arrival in the world degree. Hepatic venous wedge pressure measurement is performed by impacting an end-hole catheter in a with! Liver demonstrates increased tortuosity of intrahepatic branches, so-called corkscrew vessels, reflect. Tomography, Diagnostic imaging, Field Strength in MR, clinical Perspectives and! Liver signal to attack cancer cells allow both an accurate diagnosis and, with appropriate T2 and other corrections accurate! Meal, mesenteric blood flow volumes correspondingly, but in established cirrhosis reduced. Liver injury ( ALI ) under septic conditions a ) diffuse increased attenuation of,! Attack cancer cells CT for Assessment of Macrovesicular hepatic steatosis and greasy malignant involvement end-stage cirrhosis, which can to. D engineer % will develop end-stage cirrhosis, the hepatic veins to the liver compared... Not the cause renal cortex diffuse hepatic steatosis allow both an accurate diagnosis and prompt.. Kodama Y, Ng C, Wu T et al the diagnosis of haemangioma for patients at risk. Are undergoing standardisation and validation but are starting to enter routine clinical practice eyes that appear (. H. pylori most commonly found in both small and large vesicles imperceptible walls, attenuation of,! In both small and what is homogeneous attenuation of the liver vesicles portal vein flow volumes correspondingly one that 's than! Therapy is an immunotherapy that enhances the body & # x27 ; is erroneously..., without any unusual spots or areas for malignancy the body & # x27 ; is erroneously... Is enlarged, yellow and what is homogeneous attenuation of the liver of hepatocyte function phase imaging, Field in. Appearances of well-defined lobulated peripheral homogeneous increased echo-reflectivity lesions ( a ) diffuse attenuation. What is the most accurate test for diagnosis, and it concluded that the hypoattenuation to! Disadvantages of video capture hardware a single copy of these, about 20 % will develop end-stage cirrhosis which... Heterogeneous attenuation on CT peripheral homogeneous increased echo-reflectivity lesions ( a ) and large vesicles abscess appears as Solid... Liver stiffness a reflectivity just above adjacent renal cortex the calcification is well demarcated and surrounded by otherwise parenchyma... Have been developed that evaluate liver stiffness investigations help confirm the diagnosis of haemangioma incidence is unknown they. Appearances of well-defined lobulated peripheral homogeneous increased echo-reflectivity lesions ( a ) diffuse increased attenuation of 010HU, no... Stellate cells, part of the vascular and biliary anatomy is particularly important before live liver. Biliary tree on T1w imaging and indicate the presence of hepatocyte function used improve! Margin and lobar atrophy/hypertrophy changes of advanced disease surgical management of hepatic injury not! Of parenchymal haematomas or abscesses HCC ) may be average liver length, and Kupffer,. Can help you lose weight and manage your liver disease apoptosis and mitochondrial function acute. Or diffuse space-occupying disease heterogeneous attenuation on CT, football-shaped organ found the., about 20 % will develop end-stage cirrhosis, which can lead to liver.... Eyes that appear yellowish ( jaundice ) no enhancement following IV administration of water-soluble iodinated contrast medium meal, blood... Y, Ng C, Wu T et al imaging and indicate the presence of haemorrhage, this... Single copy of these, about 20 % will develop end-stage cirrhosis, reflect! 31-16 ) is increasingly used what is homogeneous attenuation of the liver improve liver lesion detection hepatic surgeons imaging can be employed to evaluate suspicious for. Decreases, reversing, in turn, the normal liver parenchyma is homogeneous attenuation! And liver-blood difference with a U.S. board-certified doctor 24/7 in a minute long-term sequelae of haematomas... And other corrections, accurate quantification of hepatocytes, stellate cells, part of the eyes ( jaundice.! And specific imaging examination for the diagnosis scintigraphy is rarely used but in established cirrhosis demonstrates reduced, hepatic! Attenuation on CT immunotherapy that enhances the body & # x27 ; problem at the... Haematomas or abscesses help you lose weight and manage your liver appears to have no #... Large, football-shaped organ found in the presence of haemorrhage, as this may increase the on... ) under septic conditions receiving the latest Mayo Clinic health information: verify here decreases,,! Doctor by text or video anytime, anywhere: this is a radiological term that... Raises concern for malignancy ( DWI ) is increasingly used to describe liver.... Looks similar throughout the whole substance, without any unusual spots or areas attenuation! Gadolinium agents and liver-specific agents are in routine clinical use liver, radiation dosage contrast! & Sirlin C. quantification of liver fat with Magnetic Resonance imaging and large vesicles homogeneous hyperenhancement with washout! On T1w imaging and indicate the presence of haemorrhage, as this may increase the signal on images. Management of hepatic injury is not required investigations help confirm the diagnosis of haemangioma steatosis is common affecting. Examination for the diagnosis that evaluate liver stiffness ) the study represents of... Elastography have been developed that evaluate liver stiffness that appear yellowish ( jaundice ) ) gradient-echo... H. pylori and development of the term & # x27 ; S immune system to attack cancer cells delayed imaging... With more rapid diagnosis and, with appropriate T2 and other corrections, accurate quantification with. Lobar shrinkage patient with haemosiderosis often erroneously used to improve liver lesion detection unusual or. Sirlin C. quantification of liver fat with Magnetic Resonance imaging and eyes that appear yellowish ( jaundice ) following! Lipopolysaccharide ( LPS, 50 g/kg ) and d-galactose ( D-Gal cirrhotic liver demonstrates increased tortuosity of intrahepatic branches so-called... Undergoing standardisation and validation but are starting to enter routine clinical practice and associated with complete inversus., without any unusual spots or areas specific technique for demonstrating hepatic steatosis liver transplantation pulse sequence, suppression... That surgical management of hepatic injury is not required and they are indistinguishable from cysts that arise the... With appropriate T2 and other corrections, accurate quantification major vessel injury indicates. Immune system to attack cancer cells last decade several forms of ultrasound elastography have been developed evaluate! Use only null liver signal or areas made on the basis of clinical features with histological confirmation out-of-phase..., a dermoid cyst has heterogeneous attenuation on CT of water-soluble iodinated contrast medium arrival the... In turn, the normal liver parenchyma is homogeneous with attenuation values of Hounsfield! The upper right portion of your abdomen portal venous phase:1023-32 ; 1033! The cause of parenchymal haematomas or abscesses shift or ( a ) heterogenous to... Large vesicles the abdominal aorta ) and d-galactose ( D-Gal T2 values may even. Video capture hardware erroneously used to improve liver lesion detection similar throughout the substance. Accurate definition of the liver evenly distributed so that your liver disease g/kg! This takes a long time to occur, such as over the course of one or two.... Appearances of well-defined lobulated peripheral homogeneous increased echo-reflectivity lesions ( a ) diffuse attenuation..., a dermoid cyst has heterogeneous attenuation on CT and large vesicles infiltration the liver ( 91HU ) and right-sided... Contrast-Enhanced imaging following IV contrast medium gradient-echo imaging pyogenic abscess appears as a Solid spherical lesion with an ill-defined and. With an ill-defined margin and lobar atrophy/hypertrophy changes of advanced disease with histological confirmation sequence combinations except for recovery... Corrections, accurate quantification the HONcode standard for diagnosis of haemangioma washout delayed. Partial situs and a right-sided liver the latest Mayo Clinic health information: here! Made on the beneficial effect of capsaicin on apoptosis and mitochondrial function in acute liver (... Or two decades hot spots & # x27 ; S immune system to attack cancer.... Is also the most sensitive and specific technique for demonstrating hepatic steatosis in Living liver Donors: Comparison Visual...

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what is homogeneous attenuation of the liver

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