Clinical trial Recruiting at 1 site Interventional Ages 18 to 100

Evaluating new radiation techniques for heart imaging

Official title: Prospective Evaluation of New Techniques in Radiation Reduction for Cardiovascular Computed Tomographic Angiography

Run by National Institutes of Health Clinical Center (CC) · NCT01621594 · Data updated 2026-11-12

This study is testing new heart imaging techniques that use less radiation to see if they can still provide accurate results for diagnosing coronary disease.

Quick facts

Study typeInterventional
Ages18 Years to 100 Years
SexAll
Enrollment5000 (estimated)
SponsorNational Institutes of Health Clinical Center (CC)
NIH
Drugs / interventionsRadiation
Locations1 site (Bethesda, Maryland)
StatusRecruiting
StartedJune 21, 2012
Main results expectedApril 1, 2027
Study endsApril 1, 2027
Registry record updatedOctober 8, 2026
Trial IDNCT01621594 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18 and older who require a coronary CT angiography exam.

Probably not a fit

Patients who are pregnant or have severe renal dysfunction may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study aims to assess new methods of computed tomography (CT) imaging that reduce radiation exposure while maintaining image accuracy for diagnosing coronary disease. Participants will undergo a CT scan of the heart and blood vessels, potentially using a contrast agent to enhance image quality. The study will involve screening participants through physical exams and medical history, along with blood tests to evaluate kidney function. The goal is to determine the effectiveness of these innovative imaging techniques in producing reliable results.

Why it matters

Potential benefit: If successful, this study could lead to safer imaging techniques that minimize radiation exposure for patients undergoing heart evaluations.

How similar studies have gone: Other studies have explored radiation reduction techniques in imaging, showing promising results, but this specific approach is novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
* INCLUSION CRITERIA:

  1. Clinical indication for a coronary CT angiography exam
  2. Age equal to or greater than 18 years
  3. Able to understand and willing to sign the Informed Consent Form
  4. Able and willing to provide follow-up information

EXCLUSION CRITERIA:

1. Pregnancy
2. If receiving intravenous contrast, severe renal excretory dysfunction, estimated glomerular filtration rate \< 30 mL/min/1.73m2 body surface area according to the Modification of Diet in Renal Disease criteria or as reported by the clinical lab. Glomerular filtration rate will be estimated using the 2021 CK-EPI equation that eliminate the use of race coefficient as reported in CRIS.

Screen Failures: Subjects who are screen failures can be re-enrolled once they meet eligibility criteria. Rescreened participants will be assigned the same participant number as for the initial screening.

Where it's running

  • National Institutes of Health Clinical Center
    Bethesda, Maryland, United States
    Recruiting

Study contacts

  • Principal investigator: Marcus Y Chen, M.D. — National Heart, Lung, and Blood Institute (NHLBI)
  • Study coordinator: Margaret C Lowery, R.N.
  • Email: peg.lowery@nih.gov
  • Phone: (301) 412-9255

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.