PMID: 8951904Oct 1, 1996Paper

Rest or redistribution thallium myocardial imaging for resting myocardial perfusion: a detailed comparison with regional wall motion

Nuclear Medicine Communications
S WoldmanI Hutton

Abstract

Redistribution thallium-201 (201T1) imaging is the most common method of assessing resting myocardial perfusion. However, the equivalence of a redistribution image and a separate rest injection is unclear. Although the presence of a defect on rest imaging has normally been equated with the presence of a myocardial infarction, it has recently been shown that a significant proportion of fixed defects on exercise-redistribution 201T1 actually represent areas of viable myocardium. This study was a detailed comparison of rest and redistribution imaging in 30 patients undergoing routine exercise 201T1 scanning for the assessment of coronary artery disease. A small dose (15 MBq) of 201T1 was administered at rest following the imaging in three standard planar views. Similar stress images were acquired using a further 50-55 MBq of 201T1 administered at peak effort. Redistribution images were acquired 3-4 h later and equilibrium blood pool ventriculography performed using in vivo labelling with 600 MBq 99Tcm-pertechnetate. Of 150 abnormal segments on the exercise scans, 74 (49%) were identified as being reversible on the redistribution scans and 58 (39%) on the rest images. Only 39 (53%) of these reversible defects were identified on bot...Continue Reading

Citations

Nov 1, 1996·Journal of Nuclear Cardiology : Official Publication of the American Society of Nuclear Cardiology·F J Wackers
Oct 31, 1998·Journal of Nuclear Cardiology : Official Publication of the American Society of Nuclear Cardiology·B M TsuiG T Gullberg
Jul 3, 1998·Physics in Medicine and Biology·R SandersonI Hutton

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