TO THE EDITOR: In an effort to maximize the utility of the thallium scan, the subject of the reinjection of thallium has become an issue of recent concern (1). The rationale of the reinjection procedure is the observation that a stress/reinjection comparison does a better job of identifying viable myocardium than a stress/redistribution scan. Some authors propose performing stress/redistributio...

Abstract There are several finite element-based modeling approaches to deal with fissures, fractures and discontinuities in rocks.

Intergenerational Earnings Mobility and Preferences for Redistribution This paper analyzes the extent to which intergenerational upward and downward mobility in earnings are related to individuals’ preferences for redistribution. A novel survey question from the German Socio-Economic Panel Study – whether the taxes paid by unskilled workers are too high, adequate or too low – are used to elicit...

To examine the value of stress and redistribution thallium-201 single photon emission computed tomography (SPECT) for predicting improvement after coronary artery bypass grafting (CABG) and for assessing graft patency, 17 patients underwent SPECT before and after CABG. Preoperatively, 16 patients (94%) showed reversible ischemia with redistribution, and defect score decreased from 16.4 +/- 7.6 ...

OBJECTIVE To assess the value of dobutamine over dipyridamole as a pharmacological stressing agent in myocardial perfusion imaging with thallium-201. DESIGN Stress and redistribution tomographic images were taken in a group of patients in a randomised crossover study of both agents. The scans were scored to give a value for the stress and redistribution images and a reversibility score (redis...

Redistribution thallium-201 imaging 2 to 4 h after exercise may be incomplete and therefore may be inadequate to fully assess myocardial variability. Late redistribution imaging 24 h after exercise has been proposed to overcome this limitation of thallium stress imaging. However, because of poor count density the image quality on these studies is often suboptimal. In the present study the diagn...

AIM A simple stress/redistribution thallium-201 myocardial perfusion imaging protocol may underestimate the degree of thallium redistribution in a defect identified on the stress images. We sought to investigate whether a slow-bolus injection of D-ribose improves the identification of thallium redistribution following combined adenosine/dynamic exercise stress. MATERIALS AND METHODS Fifteen p...

Background 99"Tc-sestamibi and thallium imaging have similar accuracy when used for diagnostic purposes, but whether sestamibi provides accurate information regarding myocardial viability in patients with chronic coronary artery disease has not been established. Since there is minimal redistribution of sestamibi over time, it may overestimate nonviable myocardium in patients with left ventricul...