CT Technologists Dose Audit Reports and Educational Seminar to Reduce Patient Radiation Exposure From Medical Imaging
The use of advanced diagnostic imaging has increased dramatically over the past decade, not
only contributing to rising medical costs but also exposure to ionizing radiation, of which
CT imaging plays a prominent role because it requires a relatively high dose of radiation to
produce an image when compared to conventional X-rays. The growth in the use of CT imaging
along with all other advanced medical imaging has been well documented, and taken as a whole
the use of these services has grown quicker than all other services provided by physicians.
Research has also shown great variability in the amount of radiation exposure to individual
patients, even when patient and other characteristics are controlled for. Given the
increase in the use of CT imaging and the variability in radiation exposure between similar
imaging exams, it is important to study ways of standardizing and reducing radiation levels
from CT imaging. Little is understood about the role of CT technologists' attitudes and how
they may influence patient radiation exposure, therefore, this project also give us the
opportunity to survey the technologists and determine if there is a relationship between
technologist attitudes and awareness and the radiation exposure of patients.
Allocation: Non-Randomized, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Health Services Research
Radiation dose levels (measured by dose linear product (DLP) and effective dose (ED)) from CT exams as a measure of the effectiveness of radiation dose audit reporting and educational intervention for lowering patient exposure to radiation from CT exams.
We will report dose data at two time points, April 2011 (data for these reports collect from November 2010 to March 2011), and September 2011 (data collected from April 2011 to August 2011), and compare the data from the two time points to see if there was a change in dose levels (DLP and ED) for the time period (April to August) after the presentation of the first audit reports and delivery of the educational interventions to the CT technologists.
April 2011 and September 2011
Diana Miglioretti, PhD
Group Health Research Institute
United States: Institutional Review Board