Automated tube voltage selection for radiation dose and contrast medium reduction at coronary CT angiography using 3(rd) generation dual-source CT.
Objectives: To investigate the relationship between automated tube voltage selection (ATVS) and body mass index (BMI) and its effect on image quality and radiation dose of coronary CT angiography (CCTA).Methods: We evaluated 272 patients who underwent CCTA with 3(rd) generation dual-source CT (DSCT)...
| Published in: | European Radiology Vol. 26; no. 10; pp. 3608 - 3617 |
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| Main Authors: | , , , , , , , , , , , , , |
| Format: | research Journal Article |
| Published: |
Springer Nature
Oct2016
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=118060273&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 118060273 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09387994 NPH jtl: European Radiology issn: 09387994 maglogo: N pubinfo: dt: Oct2016 vid: 26 iid: 10 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 118060273 118060273 NLM26847044 118060273 10.1007/s00330-015-4191-4 NLM26847044 118060273 ppf: 3608 ppct: 9 formats: fmt: @attributes: type: P tig: atl: Automated tube voltage selection for radiation dose and contrast medium reduction at coronary CT angiography using 3(rd) generation dual-source CT. aug: au: Mangold, Stefanie Wichmann, Julian Schoepf, U. Poole, Zachary Canstein, Christian Varga-Szemes, Akos Caruso, Damiano Bamberg, Fabian Nikolaou, Konstantin Cecco, Carlo Wichmann, Julian L Schoepf, U Joseph Poole, Zachary B De Cecco, Carlo N affil: Division of Cardiovascular Imaging, Department of Radiology and Radiological Science , Medical University of South Carolina , Charleston USA sug: subj: Coronary Angiography Methods Human Aged Female Retrospective Design Radiographic Image Interpretation, Computer-Assisted Methods Contrast Media Administration and Dosage Drug Administration Schedule Sensitivity and Specificity Male Electrocardiography Methods Body Mass Index Adult Middle Age Radiation Dosage Validation Studies Comparative Studies Evaluation Research Multicenter Studies Ferrans and Powers Quality of Life Index Aged: 65+ years Adult: 19-44 years Middle Aged: 45-64 years Female Male ab: Objectives: To investigate the relationship between automated tube voltage selection (ATVS) and body mass index (BMI) and its effect on image quality and radiation dose of coronary CT angiography (CCTA).Methods: We evaluated 272 patients who underwent CCTA with 3(rd) generation dual-source CT (DSCT). Prospectively ECG-triggered spiral acquisition was performed with automated tube current selection and advanced iterative reconstruction. Tube voltages were selected by ATVS (70-120 kV). BMI, effective dose (ED), and vascular attenuation in the coronary arteries were recorded. Signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were calculated. Five-point scales were used for subjective image quality analysis.Results: Image quality was rated good to excellent in 98.9 % of examinations without significant differences for proximal and distal attenuation (all p ≥ .0516), whereas image noise was rated significantly higher at 70 kV compared to ≥100 kV (all p < .0266). However, no significant differences were observed in SNR or CNR at 70-120 kV (all p ≥ .0829). Mean ED at 70-120 kV was 1.5 ± 1.2 mSv, 2.4 ± 1.5 mSv, 3.6 ± 2.7 mSv, 5.9 ± 4.0 mSv, 7.9 ± 4.2 mSv, and 10.7 ± 4.1 mSv, respectively (all p ≤ .0414). Correlation analysis showed a moderate association between tube voltage and BMI (r = .639).Conclusion: ATVS allows individual tube voltage adaptation for CCTA performed with 3(rd) generation DSCT, resulting in significantly decreased radiation exposure while maintaining image quality.Key Points: • Automated tube voltage selection allows an individual tube voltage adaption in CCTA. • A tube voltage-based reduction of contrast medium volume is feasible. • Image quality was maintained while radiation exposure was significantly decreased. • A moderate association between tube voltage and body mass index was found. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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