書誌事項
- タイトル別名
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- Evaluation of the Individual Tube Current Setting in Electrocardiogram-gated Cardiac Computed Tomography Estimated from Plain Chest Computed Tomography Using Computed Tomography Automatic Exposure Control
- CT-AEC オ モチイタ キョウブ タンジュン CT カラ スイテイ シタ シンゾウ CT ケンサ ニ オケル コベツカン デンリュウ セッテイ ノ ケントウ
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The aim of this study was to estimate the tube current on a cardiac computed tomography (CT) from a plain chest CT using CT-automatic exposure control (CT-AEC), to obtain consistent image noise, and to optimize the scan tube current by individualizing the tube current. Sixty-five patients (Group A) underwent cardiac CT at fixed tube current. The mAs value for plain chest CT using CT-AEC (AEC value) and cardiac CT image noise were measured. The tube current needed to obtain the intended level of image noise in the cardiac CT was determined from their correlation. Another 65 patients (Group B) underwent cardiac CT with tube currents individually determined from the AEC value. Image noise was compared among Group A and B. Image noise of cardiac CT in Group B was 24.4±3.1 HU and was more uniform than in Group A (21.2±6.1 HU). The error with the desired image noise of 25 HU was lower in Group B (2.4%) than in Group A (15.2%). Individualized tube current selection based on AEC value thus provided consistent image noise and a scan tube current optimized for cardiac CT.
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 (5), 508-513, 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
- 1390282681338772096
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- NII論文ID
- 10031159477
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- NII書誌ID
- AN00197784
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- COI
- 1:STN:280:DC%2BC3sbhs1aqsQ%3D%3D
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- ISSN
- 18814883
- 03694305
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- NDL書誌ID
- 024678029
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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