1. Trade-off between pulse rate and radiation dose during modified barium swallow examination: what is the reality?
- Author
-
Galgano SJ, Gauntt D, Boyd MR, Trahan D, Jackson BE, Koehler RE, Canon CL, McNamara MM, and Zarzour JG
- Subjects
- Administration, Oral, Adult, Female, Fluoroscopy, Heart Rate, Humans, Male, Phantoms, Imaging, Retrospective Studies, Time Factors, Barium Sulfate administration & dosage, Contrast Media administration & dosage, Deglutition Disorders diagnostic imaging, Radiation Dosage
- Abstract
Aim: To evaluate the effect of modification of dose mode and frame rate on patient radiation dose during modified barium swallow (MBS) examinations., Materials and Methods: A retrospective review was undertaken of consecutive MBS examinations performed over 6 months in the inpatient setting. Patients were divided into two cohorts: pre-implementation of the MBS Impairment Profile (MBSImP; low rate, normal dose) and post-implementation (high rate, low dose). Prior to implementation, pulse rate and dose testing were performed on multiple phantoms., Results: Four hundred and forty-nine patients were included in the pre-implementation cohort and 378 in the post-implementation cohort. Phantom dose testing demonstrated no significant difference in dose on either phantom between low rate/normal dose and high rate/low dose modes. Prior to MBS standardisation, the mean radiation dose was 5.86 (±4.35) mGy. Following standardisation, the mean radiation dose was 4.72 (±3.77) mGy (p<0.0001). The mean fluoroscopy time for MBS prior to standardisation was 83.8 (±44.4) seconds and the mean fluoroscopy time for MBS after standardisation was 82.3 (±39.8) seconds (p=0.62). The dose rate for MBS prior to standardisation was 4.35 (±2.42) and the dose rate for MBS after standardisation was 3.55 (±2.41) mGy/s (p<0.0001)., Conclusion: Adjustments made to lower the dose mode and the increase in fluoroscopy frame rate decreased the patient radiation dose and did not increase fluoroscopy time., (Copyright © 2019 The Royal College of Radiologists. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2019
- Full Text
- View/download PDF