Utility of the Contrast Injection Technique Using the Diluted Test Injection Method and the Test Bolus Tracking Method in the Coronary CT Angiography

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  • 冠動脈 CT 血管造影における希釈 test injection 法と test bolus tracking 法を併用した造影剤注入法の有用性
  • 臨床技術 冠動脈CT血管造影における希釈test injection法とtest bolus tracking法を併用した造影剤注入法の有用性
  • リンショウ ギジュツ カンドウミャク CT ケッカンゾウエイ ニ オケル キシャク test injectionホウ ト test bolus trackingホウ オ ヘイヨウ シタ ゾウエイザイ チュウニュウホウ ノ ユウヨウセイ

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<p>Although the test bolus tracking method is available as a predicting method of scan timing in the coronary computed tomography (CT) angiography, it is known that there is a problem of scan timing due to the use of a part of test bolus method. The diluted test bolus method was adopted for test bolus, and as a result of using in combination with the test bolus tracking method, it showed a higher contrast enhancement compared with the test bolus tracking method; a stable contrast enhancement with less variation in CT number was obtained. The CT number at the peak in the test scan and the CT number of the main scan showed a high correlation. The contrast injection technique using the diluted test bolus method and the test bolus tracking method is a useful method in the coronary CT angiography. We named this contrast injection technique diluted test bolus tracking method.</p>

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