| Japanese |
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| Title | QGSプログラム (左室輪郭自動抽出法) による左室容積算出精度, およびSPECT空間分解能を用いた補正方法の検討 |
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| Subtitle | 原著 |
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| Authors | 高山卓三*, 本村信篤* |
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| Authors(kana) | |
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| Organization | *(株)東芝 医用機器・システム技術研究所 |
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| Journal | 核医学 |
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| Volume | 35 |
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| Number | 8 |
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| Page | 721-726 |
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| Year/Month | 1998/10 |
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| Article | 原著 |
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| Publisher | 日本核医学会 |
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| Abstract | 「要旨」 心電図同期心筋SPECTデータより左室輪郭を自動抽出し, 左室内容積を計測する左室機能自動解析ソフト(QGSプログラム)の左室容積算出精度を心筋ファントムを用いて評価した. 実験の結果, SPECT空間分解能の劣化に伴って最大13%過小評価していることがわかった. そこで, 検出器のSPECT空間分解能を用いてQGSプログラムから測定される左室容積を補正する方法を開発した. 本補正方法を使用することにより, 心筋ファントムでは誤差1.4%以内で左室容積が算出可能であることがわかった. |
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| Practice | 臨床医学：一般 |
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| Keywords | Gated myocardial SPECT, SPECT resolution, Compensation |
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| English |
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| Title | The Compensation Method for the Effects of System Resolution to the Left Ventricular Volume Measurements Using QGS Program |
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| Subtitle | |
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| Authors | Takuzo TAKAYAMA, Nobutoku MOTOMURA |
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| Authors(kana) | |
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| Organization | Medical Engineering Laboratory, Toshiba Corporation |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 35 |
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| Number | 8 |
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| Page | 721-726 |
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| Year/Month | 1998/10 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] 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%. |
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| Practice | Clinical medicine |
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| Keywords | Gated myocardial SPECT, SPECT resolution, Compensation |
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