320列面検出器 CTを用いた心電図同期心臓 CTにおける左室収縮能および拡張能評価：心エコー法との比較

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  • Assessment of Left Ventricular Systolic and Diastolic Function with Retrospective Electrocardiogram Triggered 320-row Area Detector Computed Tomography: A Comparison with Ultrasound Echocardiography
  • 臨床技術 320列面検出器CTを用いた心電図同期心臓CTにおける左室収縮能および拡張能評価 : 心エコー法との比較
  • リンショウ ギジュツ 320レツメン ケンシュツキ CT オ モチイタ シンデンズ ドウキ シンゾウ CT ニ オケル サシツ シュウシュクノウ オヨビ カクチョウノウ ヒョウカ : シンエコーホウ ト ノ ヒカク

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Background: The 320-row area detector computed tomography (ADCT) for the evaluation of left ventricular (LV) systolic function has been reported, but reporting of ADCT for the evaluation of LV diastolic function (LVDF) cannot be found. The purpose of this study was to examine the usefulness of ADCT in the assessment of LV systolic and diastolic function compared to ultrasound echocardiography (Echo) as the standard of reference. Materials and methods: We evaluated 60 consecutive patients (mean age 62.4±13.2 years, male/female 36/24) who underwent ADCT (retrospective electrocardiogram triggered) and Echo. All patients were classified into three groups (A, B, C) according to LVDF evaluated by Echo. We examined peak filling rate (PFR) and time to peak filling (TPF) as indicator of LVDF using ADCT. Results: Good correlations between ADCT and Echo were demonstrated for the assessment of LVSF. PFR of group B (mild diastolic dysfunction) patients (1.92±0.69) and group C (moderate severe diastolic dysfunction) patients (1.90±0.75) were significantly lower than that of group A (normal diastolic function) patients (2.50±0.43). TPF of group B (191.6±54.4 ms) and group C patients (197.5±64.0 ms) were significantly higher than that of group A patients (149.5±34.1 ms). Conclusions: ADCT is useful method for the evaluation of LVSF and LV diastolic dysfunction.

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