[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"menu":3,"$fDl2hWne_QDtpaAodxjfK0gebNiOKJ4IPDaOtN6jzq2M":210},{"main":4,"mainTranslated":17,"footer":45,"footerTranslated":109},[5,8,11,14],{"title":6,"url":7},"Course library","https:\u002F\u002Fwww.medmastery.com\u002Fcourse-library",{"title":9,"url":10},"Pricing","https:\u002F\u002Fwww.medmastery.com\u002Fpricing",{"title":12,"url":13},"Earn credits","https:\u002F\u002Fwww.medmastery.com\u002Fcme-credits",{"title":15,"url":16},"Institutions","https:\u002F\u002Fwww.medmastery.com\u002Finstitutions",{"de":18,"es":27,"fr":36},[19,21,23,25],{"title":20,"url":7},"Kurse",{"title":22,"url":10},"Preise",{"title":24,"url":13},"CME-Punkte",{"title":26,"url":16},"Organisationen",[28,30,32,34],{"title":29,"url":7},"Biblioteca de cursos",{"title":31,"url":10},"Precios",{"title":33,"url":13},"Gana créditos",{"title":35,"url":16},"Instituciones",[37,39,41,43],{"title":38,"url":7},"Cours",{"title":40,"url":10},"Tarifs",{"title":42,"url":13},"Obtenir des crédits",{"title":44,"url":16},"Établissements",[46,59,79,97],{"title":47,"group":48,"menu":49},"Company",true,[50,53,56],{"title":51,"url":52},"Our teachers","https:\u002F\u002Fwww.medmastery.com\u002Fteachers",{"title":54,"url":55},"About us","https:\u002F\u002Fwww.medmastery.com\u002Fabout-us",{"title":57,"url":58},"Work with us","https:\u002F\u002Fwww.medmastery.com\u002Fwork-with-us",{"title":60,"group":48,"menu":61},"Product",[62,64,67,70,73,76,78],{"title":63,"url":7},"Courses",{"title":65,"url":66},"Magazine","https:\u002F\u002Fwww.medmastery.com\u002Fmagazine",{"title":68,"url":69},"Podcast","https:\u002F\u002Fwww.medmastery.com\u002Fpodcasts",{"title":71,"url":72},"Webinars","https:\u002F\u002Fwww.medmastery.com\u002Fwebinars",{"title":74,"url":75},"Guides","https:\u002F\u002Fwww.medmastery.com\u002Fguides",{"title":15,"url":77},"https:\u002F\u002Fwww.medmastery.com\u002Finstitutions\u002F",{"title":9,"url":10},{"title":80,"group":48,"menu":81},"Legal",[82,85,88,91,94],{"title":83,"url":84},"Imprint","https:\u002F\u002Fwww.medmastery.com\u002Fimprint",{"title":86,"url":87},"Newsletter policy","https:\u002F\u002Fwww.medmastery.com\u002Fnewsletter-privacy-policy",{"title":89,"url":90},"Privacy policy","https:\u002F\u002Fwww.medmastery.com\u002Fprivacy-policy",{"title":92,"url":93},"Cookie Policy","https:\u002F\u002Fwww.medmastery.com\u002Fcookie-policy",{"title":95,"url":96},"Terms","https:\u002F\u002Fwww.medmastery.com\u002Fterms",{"title":98,"group":48,"menu":99},"Customer support",[100,103,106],{"title":101,"url":102},"FAQs","https:\u002F\u002Fwww.medmastery.com\u002Ffaqs",{"title":104,"url":105},"Contact","https:\u002F\u002Fwww.medmastery.com\u002Fcontact",{"title":107,"url":108},"support@medmastery.com","mailto:support@medmastery.com",{"de":110,"es":143,"fr":177},[111,118,128,137],{"title":112,"group":48,"menu":113},"Unternehmen",[114,116,117],{"title":115,"url":52},"Unsere Dozentinnen und Dozenten",{"title":54,"url":55},{"title":57,"url":58},{"title":119,"group":48,"menu":120},"Produkt",[121,122,123,124,125,126,127],{"title":20,"url":7},{"title":65,"url":66},{"title":68,"url":69},{"title":71,"url":72},{"title":74,"url":75},{"title":26,"url":77},{"title":22,"url":10},{"title":129,"group":48,"menu":130},"Rechtliches",[131,133,134,135,136],{"title":132,"url":84},"Impressum",{"title":86,"url":87},{"title":89,"url":90},{"title":92,"url":93},{"title":95,"url":96},{"title":138,"group":48,"menu":139},"Kundenservice",[140,141,142],{"title":101,"url":102},{"title":104,"url":105},{"title":107,"url":108},[144,151,162,171],{"title":145,"group":48,"menu":146},"Empresa",[147,149,150],{"title":148,"url":52},"Nuestros profesores",{"title":54,"url":55},{"title":57,"url":58},{"title":152,"group":48,"menu":153},"Producto",[154,156,157,158,159,160,161],{"title":155,"url":7},"Cursos",{"title":65,"url":66},{"title":68,"url":69},{"title":71,"url":72},{"title":74,"url":75},{"title":35,"url":77},{"title":31,"url":10},{"title":163,"group":48,"menu":164},"Información legal",[165,167,168,169,170],{"title":166,"url":84},"Aviso legal",{"title":86,"url":87},{"title":89,"url":90},{"title":92,"url":93},{"title":95,"url":96},{"title":172,"group":48,"menu":173},"Atención al cliente",[174,175,176],{"title":101,"url":102},{"title":104,"url":105},{"title":107,"url":108},[178,185,196,204],{"title":179,"group":48,"menu":180},"Entreprise",[181,183,184],{"title":182,"url":52},"Nos enseignants",{"title":54,"url":55},{"title":57,"url":58},{"title":186,"group":48,"menu":187},"Produit",[188,189,190,191,192,193,194],{"title":38,"url":7},{"title":65,"url":66},{"title":68,"url":69},{"title":71,"url":72},{"title":74,"url":75},{"title":15,"url":77},{"title":195,"url":10},"Tarification",{"title":197,"group":48,"menu":198},"Mentions légales",[199,200,201,202,203],{"title":197,"url":84},{"title":86,"url":87},{"title":89,"url":90},{"title":92,"url":93},{"title":95,"url":96},{"title":205,"group":48,"menu":206},"Service client",[207,208,209],{"title":101,"url":102},{"title":104,"url":105},{"title":107,"url":108},{"content":211,"related":283,"meta":355,"internal":365},{"title":212,"leadIn":213,"category":214,"elements":217,"becomeAnExpert":252,"author":273,"readDuration":281,"readDurationFormatted":282},"Liver ultrasound—mastering the anatomy and topography of the liver","Refresh your knowledge of liver anatomy as you prepare to undertake your first liver ultrasound.",{"id":215,"name":216},1,"Course previews",[218,229,234,239,247],{"type":219,"data":220},"video",{"readDurationInSeconds":221,"video":222},238,{"platform":223,"name":224,"url":225,"size":226},"YouTube","Mastering liver anatomy before the ultrasound","https:\u002F\u002Fwww.youtube.com\u002Fwatch?v=DONcEl3q_WQ",{"width":227,"height":228},200,113,{"type":230,"data":231},"free_text",{"readDurationInSeconds":232,"text":233},14.933333333333334,"\u003Cp>In this short video from our \u003Ca href=\"https:\u002F\u002Fwww.medmastery.com\u002Fcourse\u002Fabdominal-ultrasound-essentials\">Abdominal Ultrasound Essentials\u003C\u002Fa> course, \u003Ca href=\"https:\u002F\u002Fwww.medmastery.com\u002Fteacher\u002Fnikolaus-mayr\">Dr Nikolaus Mayr\u003C\u002Fa> will take you on a fast-paced journey into and around the liver as he prepares you to tackle your very first liver ultrasound. You'll get a refresher on the position of the liver (in relation to other anatomical landmarks), an overview of the blood supply to the organ, and a breakdown of the segments and transverse anatomy of the liver.\u003C\u002Fp>",{"type":230,"data":235},{"readDurationInSeconds":236,"title":237,"text":238},14.666666666666668,"Join our Abdominal Ultrasound Essentials course now!","\u003Cp>Abdominal complaints are very common, so knowing how to perform an abdominal ultrasound examination is a great skill to have! This course will teach you how to image the upper abdominal organs, retroperitoneal space, and gastrointestinal tract. You’ll learn how to identify common variants, detect and diagnose benign and malignant pathologies, and write an appropriate ultrasound report.\u003C\u002Fp>",{"type":240,"data":241},"cta",{"readDurationInSeconds":242,"text":243,"buttonText":244,"buttonUrl":245,"teachIllustration":246},3.7333333333333334,"Start the first chapter of our Abdominal Ultrasound Essentials course for free","Start chapter 1 now","https:\u002F\u002Fwww.medmastery.com\u002Fuser\u002Fregister?target=%2Fcourses%2Fabdominal-ultrasound-essentials","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F99f55edd-07bc-4a55-aca2-819e143ce76b",{"type":230,"data":248},{"readDurationInSeconds":249,"title":250,"text":251},117.6,"Video Transcript","\u003Cp dir=\"ltr\">\u003Cb id=\"docs-internal-guid-0c63ef4d-7fff-2032-ef6e-ffd666dbd53a\">[00:00:00] \u003C\u002Fb>We find the liver in the right hypochondriac region and the epigastric region. It lies directly beneath the diaphragm and is fixed to the lower surface of the diaphragm through the parsa fixa. The parsa fixa is an area without peritoneal lining and through the falciform ligament it is fixed to the ventral abdominal wall. The falciform ligament is a peritoneal thickening that is thicker on its caudal border. \u003C\u002Fp>\u003Cp dir=\"ltr\">\u003Cb id=\"docs-internal-guid-0c63ef4d-7fff-2032-ef6e-ffd666dbd53a\">[00:00:30] \u003C\u002Fb>It is also known as the teres hepatis ligament. It forms the border between the left and right liver lobe. The liver is bordered by the pancreas with its pancreas duct. Since the liver excretes gall, which is stored in the gallbladder, the gall flows over the bile ducts and joins the pancreas duct and excretes into the duodenum. The portal vein enters the liver here. We see the common bile duct leaving the liver. We see the liver veins draining the blood from the liver \u003C\u002Fp>\u003Cp dir=\"ltr\">\u003Cb id=\"docs-internal-guid-0c63ef4d-7fff-2032-ef6e-ffd666dbd53a\">[00:01:00] \u003C\u002Fb>and the hepatic artery brings oxygenated blood into the liver. The vessel structures, here, at the liver hilum are sheathed by peritoneal tissue, forming the hepatoduodenal ligament. The liver has a dual blood supply. The arterial supply of the hepatic artery coming from the aorta and the portal vein, bringing blood from the gastrointestinal tract, to be cleared. The underlying structure of the liver is the liver lobule. It is organized into a hexagonal field. On the edge of each corner, \u003C\u002Fp>\u003Cp dir=\"ltr\">\u003Cb id=\"docs-internal-guid-0c63ef4d-7fff-2032-ef6e-ffd666dbd53a\">[00:01:30] \u003C\u002Fb>of the liver lobule, is a portal triad. It consists of a portal vein branch, a hepatic artery branch, and a bile duct. The blood flows from the portal triad into the liver lobule center, where it is drained by a central vein. As it flows through the capillary sinusoids, it is cleared. The bile flows in the opposite direction being drained over the bile ducts. When using ultrasound to find bile ducts or liver artery branches, it is always important to know \u003C\u002Fp>\u003Cp dir=\"ltr\">\u003Cb id=\"docs-internal-guid-0c63ef4d-7fff-2032-ef6e-ffd666dbd53a\">[00:02:00]\u003C\u002Fb> that a bile duct and the hepatic artery run alongside the portal vein. They are surrounded by echogenic connective tissue. This structure is called the triad of Glisson. It is sometimes also referred to as the portal triad. The liver is organized in eight liver segments, after the Couinaud classification. The classification divides the liver into eight functionally independent segments, as they all have their own segmental vessels. Normally, segment 4 is divided into segment 4A and segment 4B \u003C\u002Fp>\u003Cp dir=\"ltr\">\u003Cb id=\"docs-internal-guid-0c63ef4d-7fff-2032-ef6e-ffd666dbd53a\">[00:02:30] \u003C\u002Fb>but to make things more simple, we will just talk about this as segment 4. The organization of segments can be demonstrated using three levels, starting cranially and going caudally: the level of the hepatic vein star, the level of the portal main branching, and the level of the gallbladder or splenic vein. The most cranial level of the transverse anatomy of the liver is the level of vein confluency, also known as the liver vein star. We see the cranial segments of the liver 1, 2, \u003C\u002Fp>\u003Cp dir=\"ltr\">\u003Cb id=\"docs-internal-guid-0c63ef4d-7fff-2032-ef6e-ffd666dbd53a\">[00:03:00]\u003C\u002Fb> 4, 8, and 7. The next level of the transverse anatomy of the liver is the level of left portal vein branch. We see the following segments: segment 1, the segment border 2–3, the segment 4, the segment border 8–5, and segment 7. The vast most caudal level of transverse anatomy of the liver is the level of the splenic vein. We see the segments \u003C\u002Fp>\u003Cp dir=\"ltr\">\u003Cb id=\"docs-internal-guid-0c63ef4d-7fff-2032-ef6e-ffd666dbd53a\">[00:03:30] \u003C\u002Fb>3, 4, 5, and 6.\u003C\u002Fp>",{"courses":253,"showAwardsBelow":48},[254],{"id":255,"isFreeCmeCourse":256,"title":257,"type":258,"specialization":259,"teachers":261,"cmeCredits":263,"teacherIllustration":246,"backgroundImage":264,"relativeUrl":265,"lastChanged":266,"created":267,"description":268,"relativeURL":265,"meta":269},4048,false,"Abdominal Ultrasound Essentials","course",[260],"Ultrasound",[262],"Nikolaus Mayr, MD",5.5,"https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F99f55edd-dd25-462b-b5b6-c164498ec8c2","\u002Fcourses\u002Fabdominal-ultrasound-essentials","1763556389","1508407210","Abdominal complaints are very common; knowing how to perform an abdominal ultrasound examination is a great skill to have. This course will teach you how to image the upper abdominal organs, retroperitoneal space, and gastrointestinal tract. You’ll learn to identify common variants, detect and diagnose benign and malignant pathologies, and write an appropriate ultrasound report.",{"duration":270,"quizzes":271,"lessons":272},12539,9,62,{"id":274,"name":262,"image":275,"profession":276,"relativeUrl":279,"specializations":280},4047,"https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F9c43cef4-9314-4ed9-92aa-5247859b1c3a",{"name":277,"description":278},"Radiologist","Nikolaus is Chief Resident of Radiology, Department of Radiology and Nuclear Medicine at the Hospital of the Brothers of St. John of God in Salzburg.","\u002Fteachers\u002Fnikolaus-mayr-md",[260],157,"3m",[284,311,330],{"id":285,"title":286,"text":287,"image":288,"author":296,"path":305,"readDuration":306,"readDurationFormatted":282,"internal":307},1350,"How to Recognize INOCA (ANOCA) on an Exercise Stress Test ","Angina, abnormal stress test, clean coronaries—that's INOCA (or ANOCA), and it carries real risk. Learn to recognize and report it with exercise stress ECG.",{"alt":289,"title":290,"size":291,"location":293},"Illustration of the heart's coronary vasculature showing large coronary arteries and the extensive network of smaller vessels affected in INOCA (ischemia with nonobstructive coronary arteries).","",{"width":292,"height":292},1200,{"bucket":294,"key":295},"public-drupal-medmastery-assets-production","\u002F2026-05\u002FC17(1)_magazine image_0.png",{"id":297,"title":298,"relativeURL":299,"image":300,"professionLong":301,"profession":302,"weight":304},1563,"Franz Wiesbauer, MD MPH","\u002Fteachers\u002Ffranz-wiesbauer-md-mph","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F9c43cef0-41ee-4005-9e4a-d8711c816401","Franz is the founder and CEO of Medmastery. He is an internist with a specialization in cardiology and a master’s in public health from Johns Hopkins University.",{"name":303},"Internist",4,"\u002Fmagazine\u002Fexercise-stress-ecg-inoca",141,{"created":308,"updated":309,"published":310},1778115738,1778118425,1778118255,{"id":312,"title":313,"text":314,"image":315,"author":321,"path":323,"readDuration":324,"readDurationFormatted":325,"internal":326},1348,"Hyperlipidemia screening: who, when, & what to measure","Testing for hyperlipidemia can help you mitigate your patients' cardiovascular risk. Learn who to screen and when, which measures to request, and how to stratify risk.",{"alt":316,"title":290,"size":317,"location":319},"Lipid panel blood sample tubes used to test for hyperlipidemia in a laboratory setting",{"width":318,"height":318},600,{"bucket":294,"key":320},"\u002F2026-04\u002FC121_magazine image.png",{"id":297,"title":298,"relativeURL":299,"image":300,"professionLong":301,"profession":322,"weight":304},{"name":303},"\u002Fmagazine\u002Ftest-for-hyperlipidemia",246,"5m",{"created":327,"updated":328,"published":329},1777403036,1777572381,1777412421,{"id":331,"title":332,"text":333,"image":334,"author":339,"path":348,"readDuration":349,"readDurationFormatted":350,"internal":351},1347,"Outpatient care for COPD exacerbations","Most acute COPD exacerbations can be managed with outpatient treatment. Learn how to treat mild and moderate COPD exacerbations—and when to escalate care.",{"alt":335,"title":290,"size":336,"location":337},"Older patient using a handheld nebulizer to inhale bronchodilator medication during an acute COPD exacerbation",{"width":318,"height":318},{"bucket":294,"key":338},"\u002F2026-04\u002FC133(4)_ exacerbations_magazine image.png",{"id":340,"title":341,"relativeURL":342,"image":343,"professionLong":344,"profession":345,"weight":347},5365,"Siamak Moayedi, MD","\u002Fteachers\u002Fsiamak-moayedi-md","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F9c43cf02-1064-4074-817b-0eb5de6ded74","Professor and Director of Medical Student Education, University of Maryland and Course Director, Essential and Critical Procedures, Emergency Medicine.",{"name":346},"Emergency medicine physician",1533,"\u002Fmagazine\u002Facute-copd-exacerbation-treatment",191,"4m",{"created":352,"updated":353,"published":354},1776705362,1776710540,1776710541,{"seo":356,"og":358},{"title":357,"description":213},"Liver ultrasound—mastering the anatomy and topography of the li | Medmastery",{"title":357,"description":213,"image":359},{"alt":290,"title":290,"size":360,"location":363},{"width":361,"height":362},792,443,{"bucket":294,"key":364},"\u002Fmigrated-images\u002F2_1.png",{"id":366,"created":367,"updated":368,"published":367},156,1572540722,1655189586]