This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

Dose Reduction in Thoracic CT

This study has been completed.
Information provided by:
University Health Network, Toronto Identifier:
First received: September 12, 2005
Last updated: April 20, 2007
Last verified: September 2005
Hypothesis: Does a 50% reduction in radiation in dose significantly affect the diagnostic quality of chest CT

Condition Intervention Phase
Lymphoma Device: CT Thorax Phase 1

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Diagnostic
Official Title: Dose Reduction in Thoracic CT: A Comparison of on Line Automatic Dose Reduction and a 50% Reduction in Dose

Resource links provided by NLM:

Further study details as provided by University Health Network, Toronto:

Primary Outcome Measures:
  • Evaluating the diagnostic quality of thoracic CT exams performed at 50% of standard dose parameters

Estimated Enrollment: 100
Study Start Date: January 2004
Estimated Study Completion Date: August 2005
Detailed Description:
Patients with Lymphoma are recruited and have a follow up CT performed at 50% of the standard exposure parameters. The studies are compared for image quality with a recent (<3 months) thoracic CT performed at standard exposure parameters.

Ages Eligible for Study:   16 Years and older   (Child, Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients with Lymphoma

Exclusion Criteria:

  • No recent (<3 months) thoracic CT
  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 identifier: NCT00188461

Canada, Ontario
Toronto General Hospital
Toronto, Ontario, Canada
Sponsors and Collaborators
University Health Network, Toronto
Principal Investigator: Narinder Paul, FRCP C University Health Network, Toronto
  More Information Identifier: NCT00188461     History of Changes
Other Study ID Numbers: 03-0875
Study First Received: September 12, 2005
Last Updated: April 20, 2007 processed this record on August 18, 2017