[Clinical value of dual source computerized tomography in primary diagnosis of coronary heart disease]. / Klinische Wertigkeit der Dual-Source-Computertomographie (DSCT) in der Primärdiagnostik der koronaren Herzkrankheit.
Rontgenpraxis
; 56(5): 155-63, 2008.
Article
in De
| MEDLINE
| ID: mdl-19294872
ABSTRACT
UNLABELLED Dual-source-CT-technology (DSCT) improves temporal resolution of cardiac computed tomography to 83 ms per heart-phase. In this study, the clinical performance of this new method is evaluated. MATERIALS AND METHODS:
In fifty patients (33 male, 17 female; age 50 +/- 13 years) with suspected coronary heart disease, CT angiography (slice thickness 0.75 mm, contrast-agent 60-80 ml iomeprol) was performed with a Somatom Definition scanner. Based on the coronary 15-segment-model of the AHA, scores for image quality and lumen reduction were established to enable the observer, to give recommendations for further therapy.RESULTS:
Out of 750 possible AHA-segments, 655 were depicted (87.3%). 591 segments (90.2%) were assessed without any limitation of quality, 49 (7.5%) segments showed moderate, and 15 (2.3%) segments severe limitation in image quality. 508 (77.6%) segments were without pathological findings, 92 (14.0%) segments had minimal atherosclerotic lesions, 42 (6.4%) segments suffered from stenoses with lumen reduction less than 70%, and 13 (2.0%) showed significant stenoses of more than 70%. In 31 patients (62%), coronary heart disease was ruled out by CT angiography without any need for further non-invasive or invasive diagnostics. 8 patients (16%) underwent stress-testing for ischemia. In 11 (22%) patients coronary angiography was recommended, and DSCT findings were confirmed in 10 cases. Only one LCx stenosis was overestimated in DSCT.CONCLUSION:
Contrast-enhanced DSCT is a powerful tool in diagnosis of coronary heart disease. 98% of coronary segments could be assessed in diagnostic quality, and at least 90% of haemodynamically significant coronary stenoses were detected.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Coronary Artery Disease
/
Image Processing, Computer-Assisted
/
Image Enhancement
/
Tomography, X-Ray Computed
/
Coronary Angiography
/
Coronary Stenosis
Type of study:
Diagnostic_studies
/
Guideline
/
Prognostic_studies
Aspects:
Patient_preference
Limits:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Language:
De
Journal:
Rontgenpraxis
Year:
2008
Document type:
Article