Dose levels at coronary CT angiography-a comparison of Dual Energy-, Dual Source- and 16-slice CT

被引：31

作者：

Kerl, J. Matthias ^{[1
,3
]}

Bauer, Ralf W. ^{[1
,3
]}

Maurer, Tobias B. ^{[1
,3
]}

Aschenbach, Rene ^{[1
,3
]}

Korkusuz, Huedayi ^{[1
,3
]}

Lehnert, Thomas ^{[1
,3
]}

Deseive, Simon ^{[1
,3
]}

Ackermann, Hanns ^{[2
,3
]}

Vogl, Thomas J. ^{[1
,3
]}

机构：

[1] Goethe Univ Frankfurt, Dept Diagnost & Intervent Radiol, D-60590 Frankfurt, Germany

[2] Goethe Univ Frankfurt, Dept Dept Biomath, D-60590 Frankfurt, Germany

[3] HELIOS Clin Erfurt, Dept Diagnost & Intervent Radiol & Neuroradiol, D-99089 Erfurt, Germany

来源：

EUROPEAN RADIOLOGY | 2011年 / 21卷 / 03期

关键词：

Cardiac CT; Dual energy CT; Computed tomography; Dual source CT; Coronary CT angiography; CARDIAC COMPUTED-TOMOGRAPHY; LOW-TUBE-VOLTAGE; IMAGE QUALITY; MYOCARDIAL-ISCHEMIA; ABDOMINAL CT; INITIAL-EXPERIENCE; RADIATION-EXPOSURE; FEASIBILITY; HEART; OPTIMIZATION;

D O I：

10.1007/s00330-010-1954-9

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

To compare the dose estimates and image quality of Dual Energy CT (DECT), Dual Source CT (DSCT) and 16-slice CT for coronary CT angiography (cCTA). Sixty-eight patients were examined with 16 - slice MDCT (group 1), 68 patients with DSCT (group 2) and 68 patients using DSCT in dual energy mode (DECT group 3). CT dose index volume, dose length product, effective dose, signal-to-noise, and contrast-to-noise ratio were compared. Subjective image quality was rated by two observers, blinded to technique. The mean estimated radiation dose of all patients investigated on a 16 - slice MDCT was 12 +/- 3.59 mSv, for DSCT in single energy 9.8 +/- 4.77 mSv and for DECT 4.54 +/- 1.87 mSv. Dose for CTA was significantly lower in group 3 compared to group 1 and 2. The image noise was significantly lower in Group 2 in comparison to group 1 and group 3. There was no significant difference in diagnostic image quality comparing DECT and DSCT. cCTA shows better dose levels at both DECT and DSCT compared to 16-slice CT. Further, DECT delivers significantly less dose than regular DSCT or single source single energy cCTA while maintaining diagnostic image quality.

引用

页码：530 / 537

页数：8

共 41 条

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