Abstract
The authors have developed a method by which any two sets of R-wave-synchronized radionuclide images may be reigstered, color-coded, and displayed in cinematic fashion so that the image sets are superimposed and shown simultaneously in contrasting colors. The technique has been applied to technetium-99m stannous pyrophosphate (Tc-99m PPi) and equilibrium blood-pool images. Gated Tc-99m PPi and gated blood-pool image sets (16 frames per cardiac cycle) were acquired in identical projections. Image sets were then registered, if necessary, and color-coded by a computer algorithm. The initial experience suggests that this overlay technique may be of value to: (a) detect right ventricular infarction with greater precision; (b) provide a better estimate of anatomic location and circumferential extent of Tc-99m PPi myocardial uptake relative to the ventricular blood pool; and (c) distinguish between segmental contraction abnormalities caused by recent infarction (identified by abnormal Tc-99m PPi uptake) and segmental contraction abnormalities caused by ischemia or previous myocardial infarction.
Original language | English (US) |
---|---|
Pages (from-to) | 671-677 |
Number of pages | 7 |
Journal | Journal of Nuclear Medicine |
Volume | 22 |
Issue number | 8 |
State | Published - 1981 |
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging