In:
Current Medical Imaging Formerly Current Medical Imaging Reviews, Bentham Science Publishers Ltd., Vol. 15, No. 4 ( 2019-04-11), p. 373-379
Abstract:
〈 P 〉 Purpose: To investigate image quality, and radiation dose between ECG-gated singlesource
and dual-source CT Angiography (CTA) protocols for planning of Trans-catheter Aortic Valve Implantation (TAVI) with a reference non ECG-gated single-source protocol. Methods: A total of 120 patients were included in four groups: Non ECG-gated single-source (SS),
ECG-gated single-source (SSECG), ECG-gated dual-source high-pitch (DSECG), or non-ECG-gated dual-source high-pitch mode (DS). Qualitative image quality of the aortic annulus, aortic valve,
and coronary ostia as well as presence of motion or stair-step artefacts of the thoracic aorta were independently assessed by two readers. Quantitative image quality was assessed to calculate contrast
to noise ratio. Results: Subjective and objective scoring of motion artefacts was significantly reduced in SSECG,
DSECG and DS (p= 0.010). The imaging length was comparable between groups. Aortic annulus, aortic valve, and coronary ostia were reliably evaluable in all patients with SSECG, DSECG and DS
protocols. Conclusion: High-pitch, dual-source CT angiography of the whole aorta with or without ECG gating
is a dose-efficient and time-saving examination strategy before TAVI. However acquisition timing within the cardiac cycle needs to be taken into account. 〈 /P 〉
Type of Medium:
Online Resource
ISSN:
1573-4056
DOI:
10.2174/1573405614666180528102949
Language:
English
Publisher:
Bentham Science Publishers Ltd.
Publication Date:
2019
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