書誌事項
- タイトル別名
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- Reconstruction of Coronary 64-multidetector-row Computed Tomography Angiography in Patients with Atrial Fibrillation: Delete Short RR Intervals Using Electorocardiogram
- シンボウサイドウ ショウレイ ニ オケル 64レツカン ドウミャク MDCT ノ サイコウセイ : ECG-edit オ モチイテ ドノ テイド ミジカイ RR カンカク ノ シンパク オ サクジョ スベキ カ?
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Background: The image qualities of coronary 64-multidetector-row computed tomography angiography (CCTA) in patients with atrial fibrillation (Afib) are often not enough. This study clarifies how to use electrocardiogram (ECG) -editing in Afib. Methods: We performed CCTA (Aquilion 64 with beam pitch: 0.125, 0.35 s/r) in 33 patients (M/F=24/9, age: 71±9 yr, mean heart rate: 71±12 bpm) with Afib. We injected 5 mg of verapamil into the vein when the mean HR was ≥80 bpm. First, we reconstructed images after deleting short RR (<800, 750, 700, 650, or 600). Second, we reconstructed images in 4 different methods: (1) end-systolic images with Phase Navi (automatically selecting an optimal phase) (ES-Navi), (2) Mid-diastolic images with Phase Navi (MD-Navi), (3) Mid-diastolic images reconstructed by the “R+absolute time method” [Edit-MD (R+)], and (4) Mid-diastolic images reconstructed by the “R-absolute time method” [Edit-MD (R–)]. We reconstructed 1 and 2 without ECG-editing, and 3 and 4 were reconstructed after ECG-editing without a data deficit. The quality of the images was classified into 3 ranks: no artifact (3), mild artifact (2), and severe artifact (1). Results: The image quality point of CCTA, reconstructed after deleting RR<750, was similar to RR<800, and RR<750 was even higher than that after deleting HR<600, 650, or 700. The mean image quality point of CCTA that was reconstructed by Edit-MD (R–) or Edit-MD (R+) was significantly higher than ES-Navi or MD-Navi. Conclusion: The high image quality of CCTA could be reconstructed after deleting RR<750 in 76% or after deleting RR<800 in 70% of Afib. The reconstruction using Edit-MD (R–) or Edit-MD (R+) without a data deficit could provide a better quality CCTA than using PhaseNavi in Afib.
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 68 (1), 50-58, 2012
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
- 1390282681339324288
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- NII論文ID
- 10030042752
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- NII書誌ID
- AN00197784
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- ISSN
- 18814883
- 03694305
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- NDL書誌ID
- 023519920
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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
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可