Effects of Scatter Correction on the Assessment of Myocardial Perfusion and Left Ventricular Function by gated Tc-99m Myocardial SPECT / 대한핵의학회잡지
Korean Journal of Nuclear Medicine
; : 33-42, 2001.
Article
in Korean
| WPRIM (Western Pacific)
| ID: wpr-203649
Responsible library:
WPRO
ABSTRACT
PURPOSE:
The purpose of this study was to evaluate the effect of scatter correction on the assessment of myocardial perfusion and left ventricular function by gated Tc-99m myocardial SPECT. MATERIALS ANDMETHODS:
Subjects were 11 normal volunteers, 20 patients with non-cardiac chest pain and 13 patients with coronary artery diseases. We classified above 3 groups into normal and diseased groups. Scatter correction was done using dual-energy-window scatter correction method (DEW-SC). We compared acquired counts, image contrast, corrected maximum relative counts, indices of left ventricular function, extent and severity of perfusion defects calculated by 'CEqual program' between scatter non-corrected and corrected images.RESULTS:
Scatter corrected studies was lower in counts by 18+/-3% than uncorrected studies, but image contrast were improved in all cases. Scatter correction using DEW-SC took 3 minutes to complete, and 512 kB memory to store. There were no significant differences among indices of left ventricular function between scatter non-corrected and corrected images. Although extents of perfusion defects were not significantly different, severity was severer in scatter corrected images.CONCLUSION:
Scatter correction using DEW-SC is simple to do, and improves image contrast without changing other indices of myocardial perfusion and function.
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Perfusion
/
Chest Pain
/
Coronary Artery Disease
/
Tomography, Emission-Computed, Single-Photon
/
Ventricular Function, Left
/
Healthy Volunteers
/
Memory
Limits:
Humans
Language:
Korean
Journal:
Korean Journal of Nuclear Medicine
Year:
2001
Document type:
Article