You need JavaScript to view this

Correlation of radiation dose and heart rate in dual-source computed tomography coronary angiography

Abstract

Background: Computed tomography coronary angiography (CTCA) has been widely used since the introduction of 64-slice scanners and dual-source CT technology, but the relatively high radiation dose remains a major concern. Purpose: To evaluate the relationship between radiation exposure and heart rate (HR), in dual-source CTCA. Material and Methods: Data from 218 CTCA examinations, performed with a dual-source 64-slices scanner, were statistically evaluated. Effective radiation dose, expressed in mSv, was calculated as the product of the dose-length product (DLP) times a conversion coefficient for the chest (mSv = DLPx0.017). Heart rate range and mean heart rate, expressed in beats per minute (bpm) of each individual during CTCA, were also provided by the system. Statistical analysis of effective dose and heart rate data was performed by using Pearson correlation coefficient and two-sample t-test. Results: Mean HR and effective dose were found to have a borderline positive relationship. Individuals with a mean HR >65 bpm observed to receive a statistically significant higher effective dose as compared to those with a mean HR =65 bpm. Moreover, a strong correlation between effective dose and variability of HR of more than 20 bpm was observed. Conclusion: Dual-source CT scanners are considered to have the capability to  More>>
Authors:
Laspas, Fotios; Roussakis, Arkadios; Kritikos, Nikolaos; Efthimiadou, Roxani; Kehagias, Dimitrios; Andreou, John; [1]  Tsantioti, Dimitra [2] 
  1. CT and MRI Dept., Hygeia Hospital, Athens (Greece)
  2. Statistician, Hygeia Hospital, Athens (Greece)
Publication Date:
Apr 15, 2011
Product Type:
Journal Article
Resource Relation:
Journal Name: Acta Radiologica (online); Journal Volume: 52; Journal Issue: 3; Other Information: refs., figs., tabs.; 10.1258/AR.2010.090573
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; COMPUTERIZED TOMOGRAPHY; BIOMEDICAL RADIOGRAPHY; RADIATION DOSES; HEART
OSTI ID:
1011579
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1600-0455; TRN: SE1108067
Availability:
Available from DOI: http://dx.doi.org/10.1258/ar.2010.090573
Submitting Site:
SWDN
Size:
page(s) 273-277
Announcement Date:
Apr 25, 2011

Citation Formats

Laspas, Fotios, Roussakis, Arkadios, Kritikos, Nikolaos, Efthimiadou, Roxani, Kehagias, Dimitrios, Andreou, John, and Tsantioti, Dimitra. Correlation of radiation dose and heart rate in dual-source computed tomography coronary angiography. Sweden: N. p., 2011. Web. doi:10.1258/AR.2010.090573.
Laspas, Fotios, Roussakis, Arkadios, Kritikos, Nikolaos, Efthimiadou, Roxani, Kehagias, Dimitrios, Andreou, John, & Tsantioti, Dimitra. Correlation of radiation dose and heart rate in dual-source computed tomography coronary angiography. Sweden. doi:10.1258/AR.2010.090573.
Laspas, Fotios, Roussakis, Arkadios, Kritikos, Nikolaos, Efthimiadou, Roxani, Kehagias, Dimitrios, Andreou, John, and Tsantioti, Dimitra. 2011. "Correlation of radiation dose and heart rate in dual-source computed tomography coronary angiography." Sweden. doi:10.1258/AR.2010.090573. https://www.osti.gov/servlets/purl/10.1258/AR.2010.090573.
@misc{etde_1011579,
title = {Correlation of radiation dose and heart rate in dual-source computed tomography coronary angiography}
author = {Laspas, Fotios, Roussakis, Arkadios, Kritikos, Nikolaos, Efthimiadou, Roxani, Kehagias, Dimitrios, Andreou, John, and Tsantioti, Dimitra}
abstractNote = {Background: Computed tomography coronary angiography (CTCA) has been widely used since the introduction of 64-slice scanners and dual-source CT technology, but the relatively high radiation dose remains a major concern. Purpose: To evaluate the relationship between radiation exposure and heart rate (HR), in dual-source CTCA. Material and Methods: Data from 218 CTCA examinations, performed with a dual-source 64-slices scanner, were statistically evaluated. Effective radiation dose, expressed in mSv, was calculated as the product of the dose-length product (DLP) times a conversion coefficient for the chest (mSv = DLPx0.017). Heart rate range and mean heart rate, expressed in beats per minute (bpm) of each individual during CTCA, were also provided by the system. Statistical analysis of effective dose and heart rate data was performed by using Pearson correlation coefficient and two-sample t-test. Results: Mean HR and effective dose were found to have a borderline positive relationship. Individuals with a mean HR >65 bpm observed to receive a statistically significant higher effective dose as compared to those with a mean HR =65 bpm. Moreover, a strong correlation between effective dose and variability of HR of more than 20 bpm was observed. Conclusion: Dual-source CT scanners are considered to have the capability to provide diagnostic examinations even with high HR and arrhythmias. However, it is desirable to keep the mean heart rate below 65 bpm and heart rate fluctuation less than 20 bpm in order to reduce the radiation exposure}
doi = {10.1258/AR.2010.090573}
journal = {Acta Radiologica (online)}
issue = {3}
volume = {52}
place = {Sweden}
year = {2011}
month = {Apr}
}