書誌事項
- タイトル別名
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- Prospective Electrocardiogram Gated Coronary 320-row Area Detector Computed Tomography Angiography Using Low Tube Current Scanning with Full Reconstruction
- テイカン デンリュウ サツエイ ・ フル サイコウセイ ニ ヨル マエムキ シンデンズ ドウキ 320レツメン ケンシュツキ CT カンドウミャク ケッカンゾウエイ
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抄録
Background: It is possible to obtain equivalent image quality and a lower radiation dose using low tube current scanning with full reconstruction as compared to usual tube current scanning with half reconstruction in a 320-row area detector computed tomography (ADCT) angiography. Method: Of 589 patient underwent coronary CT angiography (CCTA), 11 patients with (RR-PQ) ≥1069 ms were enrolled. In those patients, low tube current (50% mA) scanning with full or half reconstruction were performed. As a control, 11 patients with matched pairs of tube voltage, BMI and heart rate who underwent usual scanning with half reconstruction (100% mA with half reconstruction) were selected. Standard deviation of the CT value (SD) was measured in aorta (Ao), left atrium (LA) and left ventricle (LV), and extended dose-length products (DLP.e) were calculated. Result: Significant motion artifact was not observed in any patients. SD of 50% mA with half reconstruction, 50% mA with full reconstruction, and 100% mA with half reconstruction were 28.1±2.6, 20.3±1.9, 20.7±2.5 HU in Ao, 34.4±4.4, 24.9±2.8, 24.9±3.1 HU in LA, and 29.7±2.3, 21.7±1.9, 22.1±2.3 HU in LV, respectively. There were not significant differences between 50% mA with full reconstruction and 100% mA with half reconstruction, but there were significant differences between 50% mA with half reconstruction and 50% mA with full reconstruction in all sites. The DLP.e of 50% mA scanning (74.1±21.8 mGy·cm) was significantly lower than 100% mA scanning (161.9±28.9 mGy·cm). Conclusion: CCTA with lower radiation dose and equivalent image quality can be obtained by ADCT using 50% mA scanning with full reconstruction in patients with (RR-PQ) ≥1069 ms.
収録刊行物
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- 日本放射線技術学会雑誌
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日本放射線技術学会雑誌 69 (3), 244-250, 2013
公益社団法人 日本放射線技術学会
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詳細情報 詳細情報について
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- CRID
- 1390001206363027584
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- NII論文ID
- 10031159435
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- NII書誌ID
- AN00197784
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- COI
- 1:STN:280:DC%2BC3svotlalsA%3D%3D
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- ISSN
- 18814883
- 03694305
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- NDL書誌ID
- 024608825
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- PubMed
- 23514851
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可