Pulmonary embolism MRI
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Pulmonary Embolism Microchapters |
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Diagnosis |
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Pulmonary Embolism Assessment of Probability of Subsequent VTE and Risk Scores |
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Pulmonary embolism MRI On the Web |
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Risk calculators and risk factors for Pulmonary embolism MRI |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editors-in-Chief: Ujjwal Rastogi, MBBS [2]
Overview
- Gadolinium-enhanced MRI is also a non-invasive diagnostic modality that has the advantage of no contrast exposure.
- A study examined 30 patients with suspected PE via angiography and Magnetic Resonance Angigraphy (MRA).[1]
- 8 patients had + PA grams, and MRA identified all 5 lobar emboli, in addition to 16 of 17 segmental emboli.
- Another potential benefit of MR, is that is incredibly sensitive, perhaps even better than contrast venography, in imaging clot in the inferior vena cava (IVC) and pelvic veins, and these images can be obtained at the same time as the lung scan.
- Additionally, although MR is more expensive than V/Q scanning, when one takes into account the high number of indeterminate findings on V/Q, the effective cost per diagnosis may be cheaper with MR.
- A study examined 30 patients with suspected PE via angiography and Magnetic Resonance Angigraphy (MRA).[1]
- It needs to be pointed out, that although the criticism of using CT and MR angio lacks sensitivity when examining the subsegmental arteries, inter-reader agreement was only 66% with pulmonary angiography in PIOPED Study. However, the clinical significance of undetected subsegmental PE is uncertain because they rarely cause severe symptoms.[2]
References
- ↑ Meaney JF, Weg JG, Chenevert TL, Stafford-Johnson D, Hamilton BH, Prince MR (1997). "Diagnosis of pulmonary embolism with magnetic resonance angiography". N. Engl. J. Med. 336 (20): 1422–7. doi:10.1056/NEJM199705153362004. PMID 9145679. Retrieved 2011-12-14. Unknown parameter
|month=ignored (help) - ↑ Hull RD, Raskob GE, Ginsberg JS, Panju AA, Brill-Edwards P, Coates G; et al. (1994). "A noninvasive strategy for the treatment of patients with suspected pulmonary embolism". Arch Intern Med. 154 (3): 289–97. PMID 8297195.