Test Bolus Tracking法を使用した冠動脈 CTにおけるトリガポイントの教育の有用性

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  • Usefulness of the Training of Trigger Point in Coronary CT Using Test Bolus Tracking Method
  • 臨床技術 Test Bolus Tracking法を使用した冠動脈CTにおけるトリガポイントの教育の有用性
  • リンショウ ギジュツ Test Bolus Trackingホウ オ シヨウ シタ カンドウミャク CT ニ オケル トリガポイント ノ キョウイク ノ ユウヨウセイ

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Background: Test bolus tracking (TBT) method has been used in coronary CT examination, because it is possible to examine the optimum contrast timing. However, the scan timing highly depends on an operators' recognition of peak in test bolus, thus there is a possibility of variation in contrast effect. Purpose: The aim of this study is to improve the variation of contrast effect among the operators. Methods: The training for the operators was conducted to acknowledge them the optimal trigger points. The mean CT value and standard deviation of the ascending aorta were calculated to compare before and after the training. Results: The mean CT value of the ascending aorta after the training was 485.02±73.06 HU, compared to 462.53±78.26 HU before the training. Standard deviation was significantly lower than before the training. Conclusion: The variation of contrast effect between the operators has been reduced by the training, and reproducibility of the examination has been improved.

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