Radiation Dose Audit Reports to Reduce Radiation Exposure From CT Exams

NCT ID: NCT01405066

Last Updated: 2022-02-17

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 19 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2010-11-30
• Study Completion Date: 2014-09-30

Brief Summary

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.

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.

Conditions

Decrease Variability and Amount of Radiation Dose From CT Exams

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: HEALTH_SERVICES_RESEARCH
• Blinding Strategy: NONE

Study Groups

Dose Reports and Educational Seminar

Group Type: EXPERIMENTAL

Radiation Dose Audit Reports

Intervention Type: BEHAVIORAL

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.

Educational Seminar: Radiation Dose Reduction

Intervention Type: BEHAVIORAL

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.

Interventions

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.

Intervention Type: 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.

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

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

Exclusion Criteria

• None

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

University of California, San Francisco

OTHER

Sponsor Role: collaborator

Kaiser Permanente

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Diana Miglioretti, PhD

Role: PRINCIPAL_INVESTIGATOR

Group Health Research Institute

Other Identifiers

GroupHealthCoop Foundation2011

Identifier Type: -

Identifier Source: org_study_id