Dual-source CT coronary angiography: prospective versus retrospective acquisition technique View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2010-10-27

AUTHORS

C.N. De Cecco, V. Buffa, S. Fedeli, A. Vallone, R. Ruopoli, M. Luzietti, V. Miele, M. Maurizi Enrici, F. Musumeci, V. David

ABSTRACT

PurposeThe aim of our work was to compare image quality and radiation dose in a group of patients who underwent cardiac dual-source computed tomography (DSCT) with prospective electrocardiographic (ECG) gating with those of a control group studied with retrospective gating.Materials and methodsSixty patients were randomly assigned to two groups of 30 individuals each. Patients with heart rates >70 bpm and body mass index (BMI) >30 kg/m2 were excluded. Group A was examined with prospective ECG gating and group B with retrospective gating. The dose-length product (DLP) was recorded to calculate the radiation dose, whereas the effective dose was normalised to a standard 12-cm scan of the heart.ResultsApplying the best reconstruction interval, 98.6% of segments in the prospective group and 99.3% in the retrospective group were diagnostic. No significant difference (p>0.05) in image quality was observed between groups. Mean normalised radiation dose was 4.91±0.4 mSv in the prospective-gating group and 14.62 mSv±4.36 in the retrospective-gating group (p<0.01).ConclusionsCoronary CT with prospective ECG gating, a standard feature on new scanners, allows for a significant reduction in radiation dose without causing any significant decrease in image quality or in the number of segments assessed. The prospective technique is thus recommended for patients with heart rates £70 bpm and BMI £30 kg/m2. More... »

PAGES

178-188

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s11547-010-0584-2

DOI

http://dx.doi.org/10.1007/s11547-010-0584-2

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1050880523

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/20981504


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41 acquisition techniques
42 aim
43 best reconstruction interval
44 body mass index
45 bpm
46 control group
47 decrease
48 differences
49 dose
50 dose-length product
51 effective dose
52 features
53 gating
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58 heart
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60 image quality
61 index
62 individuals
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64 m2
65 mass index
66 materials
67 new scanner
68 normalised radiation dose
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71 patients
72 products
73 prospective ECG gating
74 prospective group
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77 quality
78 radiation dose
79 rate
80 reconstruction interval
81 reduction
82 retrospective acquisition technique
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86 scanner
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92 standard features
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