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Coronary vessel visualization using true 16-row multi-slice computed tomography technology

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Abstract

Background :Multi-slice computed tomography (MSCT) scanners with retrospective ECG-gating permit visualization of the coronary arteries. Limited spatial and temporal resolution as well as breathing artefacts due to the scan time can cause poor distal vessel segment and side branch visualization. The latest MSCT generation with true 16-detector slices (Sensation 16 ®, Siemens, Forchheim, Germany) provides furthermore improved temporal and spatial resolution, as well as significantly reduced scan time. To assess, whether this technical improvement has also an impact on image quality we conducted the following study. Methods and material :Sixty-two consecutive patients (33 male, 29 female, mean age 63±8 [47–79] years, heart rate after β-blockade 63±7 [45–86] bpm) with suspicion of coronary artery disease (CAD) were examined by cardiac MSCT. Parameter settings were: 0.75mm collimation, 2.8mm table feed/rotation, caudocranial scan direction, 80cc contrast media biphasic injection protocol, gantry rotation time 375ms, temporal resolution 188ms). Thirteen coronary segments (sgts) were evaluated in each patient (total number: 806sgts). Image quality of each segment was determined as: excellent – free of motion artefacts, good – mild motion artefacts, relevant artefacts – still diagnostic value, severe calcification and insufficient image quality – not visualized segment. Results :301/806 (37%) sgts showed excellent and 294/806 (36%) sgts good image quality. Relevant artefacts were seen in 107/806 (13%) sgts, calcifications in 41/806 (5%) sgts. 63/806 (8%) sgts could not be visualized (34 of them (54%) either segment 9 or 10). Diagnostic image quality was achieved in 702/806 (87%) sgts. Conclusions :Due to true 16-slice technology and faster gantry rotation time MSCT image quality could be improved and allows a visualization of the entire coronary tree. Larger, randomized, catheter-controlled studies have to be conducted to determine, whether this improved visualization also translates into better diagnostic accuracy.

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Abbreviations

bpm:

beats per minute

CAD:

coronary artery disease

mAs:

milli ampere second

MIP:

maximal intensity projection

MPR:

multiplanar reformation

MSCT:

multi-slice computed tomography

mSV:

millisievert

p.o.:

per os

pts:

patients

sgts:

segments

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Authors and Affiliations

  1. Department of Diagnostic Radiology, Eberhard-Karls-University, Tuebingen, Germany

    Axel Kuettner, Tanja Drosch, Andreas F. Kopp, Martin Heuschmid & Claus D. Claussen

  2. Department of Internal Medicine, Division of Cardiology, Eberhard-Karls-University Tuebingen, Otfried-Mueller-Str. 10, 72076, Tuebingen, Germany

    Christof Burgstahler, Torsten Beck & Stephen Schroeder

Authors
  1. Axel Kuettner
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  2. Christof Burgstahler
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  3. Torsten Beck
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  4. Tanja Drosch
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  5. Andreas F. Kopp
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  6. Martin Heuschmid
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  7. Claus D. Claussen
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  8. Stephen Schroeder
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Corresponding author

Correspondence to Stephen Schroeder.

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Both authors contributed equally

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Kuettner, A., Burgstahler, C., Beck, T. et al. Coronary vessel visualization using true 16-row multi-slice computed tomography technology. Int J Cardiovasc Imaging 21, 331–337 (2005). https://doi.org/10.1007/s10554-004-5807-y

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  • DOI: https://doi.org/10.1007/s10554-004-5807-y

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