Cardiology overview imaging: Difference between revisions
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{{Cardiology overview}} | {{Cardiology overview}} | ||
{{CMG}} | {{CMG}} | ||
==Angiography== | |||
* Assess coronary lumen, not wall of artery | |||
* Inaccurate and variable in the assessment of short, diffusely diseased left main lesions | |||
* Provides less functional information than [[fractional flow reserve]] | |||
* Should be combined with [[fractional flow reserve]] in intermediate lesions. PCI should be performed if FFR is < 0.80. It is safe to hold off on PCI in intermediate lesions with an FFR > 0.80 as shown in the FAME study. | |||
==CT Scanning== | ==CT Scanning== | ||
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* CT of stented patients can be difficult to interpret due ot bloassoming artifact | * CT of stented patients can be difficult to interpret due ot bloassoming artifact | ||
* CT is useful in the assessment of [[sapehanous vein graft patency]] | * CT is useful in the assessment of [[sapehanous vein graft patency]] | ||
==Echocardiography== | |||
* The E/E* ratio is a new criteria to assess diastolic dysfunction. | |||
* Echocardiography tends to overestimate that gradient in [[aortic stenosis]] | |||
==MRI== | ==MRI== | ||
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* Useful in the assessment of myocardium in the assessment of fibrosis in [[hypertrophic obstructive cardiomyopathy ]]([[HOCM]]) | * Useful in the assessment of myocardium in the assessment of fibrosis in [[hypertrophic obstructive cardiomyopathy ]]([[HOCM]]) | ||
* Useful in the assessment of [[hemochromatosis]] and to follow magnitude of iron overload | * Useful in the assessment of [[hemochromatosis]] and to follow magnitude of iron overload | ||
==References== | ==References== | ||
Revision as of 15:53, 31 October 2011
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Cardiology Overview |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Angiography
- Assess coronary lumen, not wall of artery
- Inaccurate and variable in the assessment of short, diffusely diseased left main lesions
- Provides less functional information than fractional flow reserve
- Should be combined with fractional flow reserve in intermediate lesions. PCI should be performed if FFR is < 0.80. It is safe to hold off on PCI in intermediate lesions with an FFR > 0.80 as shown in the FAME study.
CT Scanning
- CT scanning is not recommended as a screening tool in the asymptomatic patient
- A negative CT scan in a patient with a low pre test probability of disease has a high negative predictive value (>90%) in excluding the presence of CAD
- CT of stented patients can be difficult to interpret due ot bloassoming artifact
- CT is useful in the assessment of sapehanous vein graft patency
Echocardiography
- The E/E* ratio is a new criteria to assess diastolic dysfunction.
- Echocardiography tends to overestimate that gradient in aortic stenosis
MRI
- Useful in the differentiation of myocarditis (subepicardial pattern) from myocardial infarction (subendocardial pattern)
- Useful in the assessment of pericardial thickening in the assessment of contstrictive pericarditis
- Useful in the assessment of myocardium in the assessment of fibrosis in hypertrophic obstructive cardiomyopathy (HOCM)
- Useful in the assessment of hemochromatosis and to follow magnitude of iron overload