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Liver and biliary system, pancreas and spleen
Published in A Stewart Whitley, Jan Dodgeon, Angela Meadows, Jane Cullingworth, Ken Holmes, Marcus Jackson, Graham Hoadley, Randeep Kumar Kulshrestha, Clark’s Procedures in Diagnostic Imaging: A System-Based Approach, 2020
A Stewart Whitley, Jan Dodgeon, Angela Meadows, Jane Cullingworth, Ken Holmes, Marcus Jackson, Graham Hoadley, Randeep Kumar Kulshrestha
The common hepatic artery (CHA) is one of the three branches of the coeliac axis (arising from the aorta at T12/L1 disc level). This becomes the hepatic artery proper after the gastroduodenal artery branches off the CHA, which then divides into the right (RHA) and left (LHA) hepatic arteries, which supply the respective lobes of the liver. There is considerable variation in the hepatic artery anatomy. This ‘conventional’ anatomical arrangement is seen in approximately 60% of patients. Considerable variation in the origins of the CHA and RHA/LHA are seen. Replaced or accessory RHA and LHA arising from the superior mesenteric artery and left gastric artery, respectively, are the commonest variations.
Gastrointestinal imaging 2: liver, spleen, pancreas, adrenals, biliary tract and aorta
Published in Sarah McWilliams, Practical Radiological Anatomy, 2011
o The common hepatic artery normally arises from the coeliac axis and becomes the hepatic artery proper after giving rise to the gastroduodenal artery. In the porta, the hepatic artery normally lies posterior to the common hepatic duct and anteromedial to the portal vein. How-ever, a variant is a hepatic artery arising from the supe-rior mesenteric artery (SMA) which may run posterior to the portal vein (Fig. 5.5).
Station number assignment to abdominal lymph node for assisting gastric cancer surgery
Published in Computer Methods in Biomechanics and Biomedical Engineering: Imaging & Visualization, 2021
Yuichiro Hayashi, Kazunari Misawa, Kensaku Mori
The labelled artery volume is inputted in the proposed method. We extract eight arteries from the input volume. The eight arteries are left gastric artery (LGA), right gastric artery (RGA), left gastroepiploic artery (LGEA), right gastroepiploic artery (RGEA), splenic artery (SA), proper hepatic artery (PHA), common hepatic artery (CHA), and coeliac artery (CA). These arteries are in close relation to the station group numbers as described in Section 2. The binary volumes for each artery, , , , , , , , and are obtained from the labelled artery volume. The proposed method computes the vessel dominant maps for each artery from these binary volumes as described in Section 3.2. After computation, we obtain the vessel dominant maps for each artery, , , , , , , , and . Using these vessel dominant maps, the proposed method assigns station group numbers to the lymph nodes. Let denote the extracted lymph node volume and denote th lymph node in this volume. For the lymph node , we calculate the maximum voxel value in each vessel dominant map,