Forte, Ernesto and Monti, Serena and Parente, Chiara Anna and Beyer, Lukas and De Rosa, Roberto and Infante, Teresa and Cavaliere, Carlo and Cademartiri, Filippo and Salvatore, Marco and Stroszczynski, Christian and Tedeschi, Carlo (2018) Image Quality and Dose Reduction by Dual Source Computed Tomography Coronary Angiography: Protocol Comparison. DOSE-RESPONSE, 16 (4): 1559325818. ISSN 1559-3258,
Full text not available from this repository. (Request a copy)Abstract
Purpose: To compare image quality and radiation dose among different protocols in patients who underwent a 128-slice dual source computed tomography coronary angiography (DSCT-CTCA). Methods: Ninety patients were retrospectively grouped according to heart rate (HR): 26 patients (group A) with stable HR <= 60 bpm were acquired using high pitch spiral mode (FLASH); 48 patients (group B) with irregular HR <= 60 bpm or stable HR between 60 and 70 bpm using step and shoot mode; and 16 patients (group C) with irregular HR >60 bpm or stable HR >= 70 bpm by retrospective electrocardiogram pulsing acquisition. Signal to noise ratio (SNR) and contrast to noise ratio (CNR) were measured for the main vascular structures. Moreover, the dose-length product and the effective dose were assessed. Results: Both SNR and CNR were higher in group A compared to group C (18.27 +/- 0.32 vs I 1.22 +/- 0.50 and 16.75 +/- 0.32 vs 10.17 +/- 0.50; P = .001). The effective dose was lower in groups A and B (2.09 +/- 1.27 mSv and 4.60 +/- 2.78 mSv, respectively) compared to group C (9.61 +/- 5.95 mSv) P < .0001. Conclusion: The correct selection of a low-dose, HR-matched CTCA scan protocol with a DSCT scanner provides substantial reduction of radiation exposure and better SNR and CNR.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PITCH SPIRAL ACQUISITION; DIAGNOSTIC-ACCURACY; CT ANGIOGRAPHY; HEART-RATE; RADIATION-EXPOSURE; CARDIOVASCULAR CT; ENERGY CT; MODE; image quality; radiation dose; computed tomography coronary angiography; dual source computed tomography; coronary artery disease |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Röntgendiagnostik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 05 Dec 2019 08:34 |
| Last Modified: | 05 Dec 2019 08:34 |
| URI: | https://pred.uni-regensburg.de/id/eprint/13687 |
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