different aspects of transient ischemic dilation

نویسندگان

vahid reza dabbagh kakhki

چکیده

transient ischemic left ventricular dilation (tid) is a marker of severe and extensive coronary artery disease as well as an increased risk of adverse outcomes. the patients with more severe and extensive ischemia, multivessel-type of perfusion abnormality as well as patients with left anterior descending artery (lad) territory perfusion abnormality have more probability of having tid. evaluation of tid may be purely visual, or based on calculation of tid ratio between stress and rest images. cutoff values for an abnormal tid ratio vary widely throughout the literature and may be related to different factors like patient populations and imaging protocols. on the other hand, several other causes of tid in the absence of significant epicardial stenoses have been reported. these include severe hypertension with myocardial hypertrophy; hypertrophic cardiomyopathy; and dilated cardiomyopathy.

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Different aspects of transient ischemic dilation

  Transient ischemic left ventricular dilation (TID) is a marker of severe and extensive coronary artery disease as well as an increased risk of adverse outcomes. The patients with more severe and extensive ischemia, multivessel-type of perfusion abnormality as well as patients with left anterior descending artery (LAD) territory perfusion abnormality have more probab...

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Transient Ischemic Dilation

1. Miyamoto T, Neuman Y, Luo H, et al. Coronary vasodilation by noninvasive transcutaneous ultrasound. J Am Coll Cardiol 2003;41: 1623–7. 2. Kipshidze NN, Chapidze G, Shperling LV, et al. USSR patent no. 1172554: method for the treatment of patients with acute myocardial ischemia. January 18, 1982. 3. McPherson DD, Holland CK. Seizing the science of ultrasound: beyond imaging and into physiolog...

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Assessment of transient ischemic dilation with cardiac MRI

Background Transient ischemic dilation of the left ventricle may be suggestive of global myocardial ischemia on SPECT stress imaging. While SPECT stress/rest imaging relies on computation-adjusted volumetric data to calculate a stress/rest “TID ratio,” measured at 20 to 30 minutes after peak regadenoson stress, cardiac MRI (CMR) allows for the direct measurement of LV wall thickness and cavity ...

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Variation in heart rate influences the assessment of transient ischemic dilation in myocardial perfusion scintigraphy

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Comparison of transient ischemic dilation ratios in SPECT and SPECT-CT myocardial perfusion imaging in the low pre-test probability group

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UNLABELLED Transient ischemic dilation (TID) in the setting of abnormal stress-rest cardiac SPECT myocardial perfusion imaging (MPI) has been linked with increased cardiovascular risk. However, the significance of TID in the setting of an otherwise normal SPECT MPI study has not been clearly established. In this study, cardiac CT was used to evaluate the prevalence of atherosclerotic lesions an...

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عنوان ژورنال:
iranian journal of nuclear medicine

ناشر: tehran university of medical sciences

ISSN 1681-2824

دوره 15

شماره 2 2007

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