Title :
The compensation method for the effects of system resolution to the left ventricular volume measurements using QGS program
Author :
Takayama, Takuzo ; Motomura, Nobutoku ; Ogawa, Koichi
Author_Institution :
Med. Eng. Lab., Toshiba Corp., Japan
Abstract :
We evaluated the accuracy of left ventricular volume calculations performed using the left ventricular function automatic analysis software (QGS program), which automatically extracts the left ventricular profile from ECG-gated myocardial SPECT data and then measures the left ventricular volume. We used a myocardial phantom for this evaluation. The results of our experiments showed that the left ventricular volume was underestimated by up to 13% as the SPECT spatial resolution deteriorated. To overcome this problem, we have developed a method for correcting the left ventricular volume measured by the QGS program according to the SPECT spatial resolution of the detectors. This new correction method permits the left ventricular volume of the phantom to be calculated with an error of less than 1.4%
Keywords :
biomedical measurement; cardiology; error compensation; image resolution; image restoration; medical image processing; single photon emission computed tomography; volume measurement; ECG-gated myocardial SPECT; QGS program; automatic analysis software; compensation method; errors evaluation; left ventricular function; left ventricular profile; left ventricular volume measurements; myocardial phantom; spatial resolution; system resolution effects; Data mining; Detectors; Imaging phantoms; Myocardium; Performance analysis; Performance evaluation; Software measurement; Software performance; Spatial resolution; Volume measurement;
Conference_Titel :
Nuclear Science Symposium, 1998. Conference Record. 1998 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-5021-9
DOI :
10.1109/NSSMIC.1998.773913
