MRI
Copyright 2007
Outflow Level
Aortic Valve
This axial MRI view is shows the RVOT anterior and leftward of the aortic valve, after it has twisted around the aorta. The thin musculature of the ovoid infundibulum is in red overlay in the second image. Courtesy of Philips Medical Systems and modified by Ashley Davidoff M.D.) 32092 |
07954bWduo heart cardiac aorta aortic valve infundibulum RVOT right ventricular outflow tract position relation MRIscan Davidoff MD |
07258b02 anterior aorta posterior pulmonary artery position connection subaortic conus D TGA TGV D transposition of the great vessels D transposition of the great arteries dextro rightward MRI Davidoff MD |
07974c01 heart cardiac right atrium aortic valve aortic sinus fx right atrial filling defect dx sinus of Valsalva aneurysm of the right aortic sinusprolapsing into the right atrium (RA defect) dx Marfan’s Syndrome MRI T1 weighted Davidoff MD 07973.800 07974c01 07974.800 |
08233b01 |
01651.800 aorta pulmonary arteries branch pulmonary artery fx origin of the branch PA fromthe posterior aspect of the aorta dx TA truncus arteriosus MRI T1 weighted CHD |
Isthmus
This combination of an angiogram and MRI show a focal coarctation of the aorta distal to the dilated left subclavian artery. Note the large internal mmammary artery in the angiogram (a) Courtesy Ashley Davidoff MD 00254c02 code CVS aorta thorax coarctation |
Arch and Descending
38852.800 thorax abdomen ascending aorta aortic arch descending thoracic aorta abdominal aorta shape tortuous MRI Courtesy Ashley Davidoff MD |
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Abdominal Aorta
These two images represent cross sectional imaging of an infrarenal fusiform abdominal aortic aneurysm, with image a, being from a T1 weighted MRI sequence and image b from a CT scan with contrast. MRI fails to have the sensitivity for calcium that CT does, and since calcification is an intrinsic part of aneurysmal disease, when it comes to meausurement of aortic aneurysmal size, CT is superior. Courtesy Ashley Davidoff MD 15153c02 code CVS aorta abdomen AAA aneurysm fusiform infrarenal |
23263b back pain aorta artery abdominal aortic aneursym fusiform shape spine bone MRI T1 sagittal Courtesy James Donnelly MD |
14646.800 aorta kidney artery superior mesenteric artery arc of Drummond IMA inferior mesenteric artery collaterals renovascular disease occluded aorta internal iliac artery fx occluded occlusion small compensatory hypertrophy collaterals MRA MRIscan Davidoff MD |
16910b aorta thorax fx irregular fx narrow dx Takayasu arteritis imaging radiology MRI Courtesy Ashley Davidoff MD DB |