書誌事項
- タイトル別名
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- Comparison of Radiation Dose Reduction of Prospective ECG-gated One Beat Scan Using 320 Area Detector CT Coronary Angiography and Prospective ECG-gated Helical Scan with High Helical Pitch (FlashScan) Using 64 Multidetector-row CT Coronary Angiography
- 320列面検出器CTを用いた前向き心電図同期1心拍冠動脈撮影による被ばく低減効果--64列MDCTとの対比
- 320レツメン ケンシュツキ CT オ モチイタ マエムキ シンデンズ ドウキ 1 シンパク カンドウミャク サツエイ ニ ヨル ヒバクテイゲン コウカ 64レツ MDCT ト ノ タイヒ
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Background: A high radiation dose associated with 64 multidetector-row computed tomography (64-MDCT) is a major concern for physicians and patients alike. A new 320 row area detector computed tomography (ADCT) can obtain a view of the entire heart with one rotation (0.35 s) without requiring the helical method. As such, ADCT is expected to reduce the radiation dose. We studied image quality and radiation dose of ADCT compared to that of 64-MDCT in patients with a low heart rate (HR≤60). Methods: Three hundred eighty-five consecutive patients underwent 64-MDCT and 379 patients, ADCT. Patients with an arrhythmia were excluded. Prospective ECG-gated helical scan with high HP (FlashScan) in 64 was used for MDCT and prospective ECG-gated conventional one beat scan, for 320-ADCT. Image quality was visually evaluated by an image quality score. Radiation dose was estimated by DLP (mGy･cm) for 64-MDCT and DLP.e (mGy･cm) for 320-ADCT. Results: Radiation dose of 320-ADCT (208±48 mGy･cm) was significantly (P<0.0001) lower than that of 64-MDCT (484±112 mGy･cm), and image quality score of 320-ADCT (3.0±0.2) was significantly (P=0.0011) higher than that of 64-MDCT (2.9±0.4). Scan time of 320-ADCT (1.4±0.1 s) was also significantly (P<0.0001) shorter than that of 64-MDCT (6.8±0.6 s). Conclusions: 320-ADCT can achieve not only a reduction in radiation dose but also a superior image quality and shortening of scan time compared to 64-MDCT.
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 66 (12), 1548-1554, 2010
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
- 1390282681339060224
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- NII論文ID
- 10027125406
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- NII書誌ID
- AN00197784
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- COI
- 1:STN:280:DC%2BC3M7lvVSqtw%3D%3D
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- ISSN
- 18814883
- 03694305
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- NDL書誌ID
- 10961424
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- PubMed
- 21282910
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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