LV Contrast: Difference between revisions
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Contrast echocardiography is used to improve the picture quality and at the same time provide information on myocardial perfusion. Contrast echocardiography can save the patient for further invasive investigations. Because in addition to improving quality contrast, echocardiography provides a secure and comprehensive investigation of cardiac structure, function and coronary flow reserve. | Contrast echocardiography is used to improve the picture quality and at the same time provide information on myocardial perfusion. Contrast echocardiography can save the patient for further invasive investigations. Because in addition to improving quality contrast, echocardiography provides a secure and comprehensive investigation of cardiac structure, function and coronary flow reserve. | ||
Contrast echocardiography is used to enhance the echogenicity of blood (better signal/noise ratio) and is used only in patients in whom no contrast has delivered (if there are 2 or more segments | Contrast echocardiography is used to enhance the echogenicity of blood (better signal/noise ratio) and is used only in patients in whom no contrast has delivered (if there are 2 or more segments, LV myocardium cannot be judged) any result. Contrast highlights the left ventricle white and enhances the outline of the endocardial border thereby accurate detection or exclusion of abnormalities increases. | ||
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|+ Indication/contra-indication | |+ Indication/contra-indication | ||
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*<7 days after acute coronary syndrome | *<7 days after acute coronary syndrome | ||
*Significant shunt (suspected or proven) | *Significant shunt (suspected or proven) | ||
* | *Hypersensitive LV contrast | ||
*Intracoronary lesion | *Intracoronary lesion | ||
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|- | |- | ||
!Indications for LV contrast | !Indications for LV contrast | ||
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*LV volume and ejection fraction<nowiki>*</nowiki> | *LV volume and ejection fraction<nowiki>*</nowiki> | ||
*Apical hypertrophic CMP | *Apical hypertrophic CMP | ||
*Non - compaction CMP | *Non-compaction CMP | ||
*Apical thrombus | *Apical thrombus | ||
*LV pseudoaneurysm | *LV pseudoaneurysm | ||
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==Mechanical index== | ==Mechanical index== | ||
Transducers generate an acoustic field by a high input (power) of emitted sound waves (vibrations). One measure of this is the mechanical index. High mechanical index destroy the contrast bubbles | Transducers generate an acoustic field by a high input (power) of emitted sound waves (vibrations). One measure of this is the mechanical index. High mechanical index destroy the contrast bubbles therefore, a reduction in the input of the sound waves transmitted is necessary. | ||
==Example== | ==Example== | ||
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|Video | |Video | ||
Latest revision as of 13:40, 5 February 2014
Contrast echocardiography is used to improve the picture quality and at the same time provide information on myocardial perfusion. Contrast echocardiography can save the patient for further invasive investigations. Because in addition to improving quality contrast, echocardiography provides a secure and comprehensive investigation of cardiac structure, function and coronary flow reserve.
Contrast echocardiography is used to enhance the echogenicity of blood (better signal/noise ratio) and is used only in patients in whom no contrast has delivered (if there are 2 or more segments, LV myocardium cannot be judged) any result. Contrast highlights the left ventricle white and enhances the outline of the endocardial border thereby accurate detection or exclusion of abnormalities increases.
| Contra-indications for LV contrast |
|---|
|
| Indications for LV contrast |
|---|
|
| *At suboptimal 2D images to enhance image quality |
Mechanical index
Transducers generate an acoustic field by a high input (power) of emitted sound waves (vibrations). One measure of this is the mechanical index. High mechanical index destroy the contrast bubbles therefore, a reduction in the input of the sound waves transmitted is necessary.
Example
| Video | Video |