Diagnostic and Interventional Radiology
Radiology Physics - Original Article

CT dose management for neurologic events in patients with cardiac devices: Radiation exposure variation in patients with cardiac devices


Department of Radiology, Hacettepe University Faculty of Medicine, Ankara, Turkey


Department of Radiology, Ministry of Health Ankara City Hospital, Ankara, Turkey


Department of Radiology, Ege University Faculty of Medicine, İzmir, Turkey


Department of Cardiology, Hacettepe University Faculty of Medicine, Ankara, Turkey

Diagn Interv Radiol 2020; 1: -
DOI: 10.5152/dir.2021.20673
Read: 47 Downloads: 25 Published: 18 January 2021

PURPOSE: To compare the inter-center cranial computed tomography (CT) acquisition rates, CT findings, CT related radiation dose, and variability of CT acquisition parameters for neurologic events among patients with implantable cardioverter-defibrillator (ICD) or left ventricular assist device (LVAD).

METHODS: A total of 224 patients [ICD group (n = 155) and LVAD group (n = 69)] who had at least one cranial CT scan were enrolled from three medical centers. The variability and effect of the number, indication, and findings of cranial CT scans as well as CT acquisition parameters including tube potential, tube current, tube rotation time (TI), slice collimation (cSL), and spiral or sequential scanning techniques on CT dose index volume (CTDIvol), total dose length product (DLP) were analyzed.

RESULTS: The mean DLP value of Center A and mean CTDIvol values of Center A and C were significantly lower than Center B (p < 0.001). The mean CTDIvol and DLP values in the ICD group were substantially lower than the LVAD group (p<0.001). The most potent parameters causing the changes in CTDIvol and DLP were kV, mAs values, and CT scanning technique as sequential or spiral according to multivariate linear regression analysis.

CONCLUSION: Cranial CT acquisition parameters and radiation doses vary significantly between centers, which necessitates optimization of cranial CT protocols to overcome the cumulative radiation dose burden in patients with neurologic events. 

Cite this article as: Coban G, Parlak S, Onur MR, et al. CT dose management for neurologic events in patients with cardiac devices: Radiation exposure variation in patients with cardiac devices. Diagn Interv Radiol. XX XXX 2021 10.5152/dir.2021.20673 [Epub Ahead of Print].

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