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Radiation Dose Audit Reports to Reduce Radiation Exposure From CT Exams

This study is ongoing, but not recruiting participants.
Sponsor:
Collaborator:
University of California, San Francisco
Information provided by (Responsible Party):
Group Health Cooperative
ClinicalTrials.gov Identifier:
NCT01405066
First received: July 21, 2011
Last updated: July 22, 2013
Last verified: July 2013
  Purpose

The purpose of this study is to quantify variation in radiation dose levels across CT technologists, and determine the effectiveness of combining radiation dose audit reports and an educational seminar as a means to reduce the variation and level of patient exposure to radiation.

The investigators expect the radiation dose audit reports and educational seminar will lead to reduced radiation exposure to patients by making technologists more aware of the risks of radiation exposure from CT exams and identifying technologists with higher radiation exams compared with their peers.

The investigators expect the degree to which a technologist is concerned and aware about radiation exposure and cancer risk will be associated with adherence to radiation reduction protocols and the subsequent level of radiation their patients are exposed to when receiving a CT examination.


Condition Intervention
Decrease the Variability and Amount of Radiation Dose From CT Examinations.
Behavioral: Radiation Dose Audit Reports
Behavioral: Educational Seminar: Radiation Dose Reduction

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Health Services Research
Official Title: CT Technologists Dose Audit Reports and Educational Seminar to Reduce Patient Radiation Exposure From Medical Imaging

Further study details as provided by Group Health Cooperative:

Primary Outcome Measures:
  • 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. [ Time Frame: April 2011 and September 2011 ] [ Designated as safety issue: No ]
    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.


Secondary Outcome Measures:
  • CT Tech technologists attitudes and awareness towards radiation exposure from CT imaging [ Time Frame: April 2011 to September 2011 ] [ Designated as safety issue: No ]

Enrollment: 19
Study Start Date: November 2010
Estimated Study Completion Date: September 2014
Estimated Primary Completion Date: September 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Dose Reports and Educational Seminar Behavioral: Radiation Dose Audit Reports
Audit reports by CT technologist, with graphs of radiation dose levels of 20 exams from each of the 4 most common CT exams. Reports show the distribution of radiation dose levels by each exam type, and compares the technologist's dose levels to the overall levels from the clinic where they work and to the United Kingdom's 2003 Reference Dose. Prior to the graphs, the reports include an introductory page explaining the organization of the report and defining the dosimetry metrics. The final page of the report lists exams meriting individual review because their doses are higher than that of the clinic averages.
Behavioral: Educational Seminar: Radiation Dose Reduction
Seminar led by a Radiologic Physicist and Radiologist. Discussion of the parameters associated with radiation dosage from CT exams and methods for changing these parameters to lower radiation dose.

Detailed Description:

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.

  Eligibility

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Group Health CT Technologist from Capitol Hill, Tacoma and Bellevue Clinics

Exclusion Criteria:

  • None
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01405066

Sponsors and Collaborators
Group Health Cooperative
University of California, San Francisco
Investigators
Principal Investigator: Diana Miglioretti, PhD Group Health Research Institute
  More Information

No publications provided

Responsible Party: Group Health Cooperative
ClinicalTrials.gov Identifier: NCT01405066     History of Changes
Other Study ID Numbers: GroupHealthCoop Foundation2011
Study First Received: July 21, 2011
Last Updated: July 22, 2013
Health Authority: United States: Institutional Review Board

Keywords provided by Group Health Cooperative:
Computed Tomography (CT)
Ionizing radiation
Advanced medical imaging
Radiation Dose Audit Reports

ClinicalTrials.gov processed this record on November 23, 2014