magnetic resonance angiography (MRA)
Jump to navigation
Jump to search
Indications
- coronary MRA
- overall specificity 93%, sensitivity 42% (2002),
- for left main or 3-vessel disease: sensitivity 100%, specificity 85%[2]
- non-invasive evaluation for carotid artery stenosis[3], thoracic & abdominal aortic aneurysm, renal artery stenosis, peripheral vascular disease of lower extremities is called 'run-off'
Procedure
- time of flight (TOF) or phase contrast (more sensitive to flow)
- magnetized protons moving into imaged field
- sensitive to flow & turbulence
- 3D requires stacked images
- sensitive to movement
- larger voxels, more flow artifacts
- 3D field acquisition times long
- gadolinium reduces acquisition time
- artifact reduced by gadolinium
More general terms
More specific terms
- contrast-enhanced magnetic resonance angiography (CEMRA)
- magnetic resonance angiography (MRA) aorta
- magnetic resonance angiography (MRA) carotid & neck vessels
- magnetic resonance angiography abdomen
- magnetic resonance angiography celiac & superior mesenteric vessels
- magnetic resonance angiography chest
- magnetic resonance angiography extremity
- magnetic resonance angiography head & neck
- magnetic resonance angiography pelvis
- magnetic resonance angiography spinal cord
Additional terms
References
- ↑ J Rapp, UCSF Fresno Invited Lecture, May 13, 1997
- ↑ 2.0 2.1 Journal Watch 22(3):19, 2002 Kim WY et al Coronary magnetic resonance angiography for the detection of coronary stenoses. N Engl J Med 345:1863, 2001 PMID: https://www.ncbi.nlm.nih.gov/pubmed/11756576
- ↑ 3.0 3.1 Wardlaw JM et al, Non-invasive imaging compared with intra-arterial angiography in the diagnosis of symptomatic carotid stenosis: A metananalysis. Lancet 2006; 367:1503 PMID: https://www.ncbi.nlm.nih.gov/pubmed/16679163
- ↑ Wikipedia: Magnetic resonance angiography http://en.wikipedia.org/wiki/Magnetic_Resonance_Angiography
- ↑ Medical Knowledge Self Assessment Program (MKSAP) 16 American College of Physicians, Philadelphia 2012