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.
Artículo
en Coreano
| WPRIM
| ID: wpr-203649
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.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Perfusión
/
Dolor en el Pecho
/
Enfermedad de la Arteria Coronaria
/
Tomografía Computarizada de Emisión de Fotón Único
/
Función Ventricular Izquierda
/
Voluntarios Sanos
/
Memoria
Límite:
Humanos
Idioma:
Coreano
Revista:
Korean Journal of Nuclear Medicine
Año:
2001
Tipo del documento:
Artículo
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