A comparison of maximal exercise and dipyridamole thallium-201 planar gated scintigraphy

✍ Scribed by U. Buell

• Book ID: 104653961
• Publisher: Springer
• Year: 1992
• Tongue: English
• Weight: 45 KB
• Volume: 19
• Category: Article
• ISSN: 0340-6997
• DOI: 10.1007/bf00182828

✦ Synopsis

A comparison of maximal exercise and dipyridamole thallium-201 planar gated scintigraphy

to assess the 2°IT1 uptake (%) in defects, the results in our study may explain the findings of Martin et al.

[2] that dipyridamole induces fewer and less extensive thallium-perfusion defects than maximal exercise.

Dear Sir,

We read with great interest the article by Martin et al.

[2] comparing the results of maximal exercise vs dipyridamole thallium-201 planar gated myocardial scintigraphy. In 1978, our group undertook a similar study except for gating [1]. We found that it was a problem to compare regional 2°1T1 uptake in myocardium obtained with either protocol. This statement is based on the fact that the regional LV 2°1T1 net count rates in coronary heart disease, measured over the maximum uptake area, did not increase the same amount in coronary dilation as during exercise: the increase in normals was 48 % (exercise) vs 70% (dipyridamole). In coronary heart disease it was 30% (exercise) or 19% (dipyridamole). Thus, since these maximal values are employed for reference in order