<abstract xmlns="http://www.w3.org/1999/xhtml"><p>A survey was performed to evaluate patient exposure after a procedure for the CT X-ray tube’s emergency warm-up, with the patient positioned on the table within the CT gantry. Three CT units, situated in three different University hospitals, were included in the survey. The evaluation was performed with AGFA personal monitoring films to visualize the results and discuss them with the radiographers who operate the systems. Additional measurements were performed with the RaySafe X2 system to demonstrate the presence of exposure. The air kerma resulting from implementing the warm-up protocol was evaluated to be higher than 112 μGy, 409 μGy, and 807 μGy for each of the CT units. Those values were underestimated because of the dosimetry equipment used and the methodology. A discussion between medical staff, engineers, and medical physicist was initiated. The practice with unnecessary patient exposure was terminated.</p></abstract>

A survey was performed to evaluate patient exposure after a procedure for the CT X-ray tube’s emergency warm-up, with the patient positioned on the table within the CT gantry. Three CT units, situated in three different University hospitals, were included in the survey. The evaluation was performed with AGFA personal monitoring films to visualize the results and discuss them with the radiographers who operate the systems. Additional measurements were performed with the RaySafe X2 system to demonstrate the presence of exposure. The air kerma resulting from implementing the warm-up protocol was evaluated to be higher than 112 μGy, 409 μGy, and 807 μGy for each of the CT units. Those values were underestimated because of the dosimetry equipment used and the methodology. A discussion between medical staff, engineers, and medical physicist was initiated. The practice with unnecessary patient exposure was terminated.

Evaluation of Patient Exposure After an Emergency Warm-Up of the CT X-Ray Tube

University Hospital Aleksandrovska -Sofia

Journal of Biomedical and Clinical Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Evaluation of Patient Exposure After an Emergency Warm-Up of the CT X-Ray Tube"}

A survey was performed to evaluate patient exposure after a procedure for the CT X-ray tube’s emergency warm-up, with the patient positioned on the table...

Evaluation of Patient Exposure After an Emergency Warm-Up of the CT X-Ray Tube

Published Online: Jan 21, 2021

Page range: 122 - 126

Received: Jun 19, 2020

Accepted: Dec 11, 2020

DOI: https://doi.org/10.2478/jbcr-2020-0017

Keywords
patient dosimetry, computed tomography, X-ray tube, warming procedure, patient exposure

© 2020 Desislava Z. Kostova-Lefterova et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Evaluation of Patient Exposure After an Emergency Warm-Up of the CT X-Ray Tube

Published Online: Jan 21, 2021

Page range: 122 - 126

Received: Jun 19, 2020

Accepted: Dec 11, 2020

DOI: https://doi.org/10.2478/jbcr-2020-0017

Keywordspatient dosimetry, computed tomography, X-ray tube, warming procedure, patient exposure

© 2020 Desislava Z. Kostova-Lefterova et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
patient dosimetry, computed tomography, X-ray tube, warming procedure, patient exposure