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MR Aortogram

MR Aortogram

MR Aortogram
MR Aortogram

MR Aortogram (Magnetic resonance aortogram) is imaging of the aorta using magnetic resonance imaging (MRI). MRI can be done with out without contrast enhancement. Gadolinium based contrasts are used for enhancement in case of MRI, whereas iodine based contrasts are used in conventional angiography. MRI can image blood vessels without injection of any contrast and the technique is often called as dyeless angiography. The changes in hydrogen nuclei in response to a magnetic field forms the basis of MR imaging. Since hydrogen nuclei are plentiful in blood which has a high water content, it can be imaged well in MRI.

The image shown above demonstrates the heart, lung and its blood vessels, ascending aorta, arch vessels, descending aorta and its branches. Major visceral branches arise from the descending aorta.

Asc aorta: ascending aorta; Desc aorta: descending aorta

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MCQs in Medicine - Cardiovascular System is based on undergraduate medical curriculum. Though the questions are aimed at basic post graduate entrance examinations, candidates taking competitive exams at the post graduate exit level may also find them useful, especially the explanations for the answers. Undergraduate medical students will find them useful for answering MCQ tests in their regular exams. More than just answering MCQs, the explanations will improve the knowledge and understanding about the conditions discussed.Medicine MCQs - Cardiovascular System Kindle Edition: Click Here for a Preview Comments and suggestions are most welcome.