Structural Heart DiseaseNCT05372627
NHLBI-Emory Advanced Cardiac CT Reconstruction
An observational study of Structural Heart Disease, run by National Heart, Lung, and Blood Institute (NHLBI) at 2 sites in United States.
Trial summary
Background: Doctors use computed tomography (CT) to get detailed pictures of the heart. CT uses x-rays to gather raw data. Computers assemble this data to make the images doctors look at. A new computer technique can make higher resolution images from the same CT scans. Read more about this study
- Who is it for?
- Ages 18 to 100 years
- Conditions the study is for
- Structural Heart Disease
- How many people
- 1,000 participants
- Where
- 2 sitesUnited States
- Study dates
- 28 Oct 2026to 30 Jan 2031
- Phase
- Observational
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 100 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Adults undergoing clinically-indicated contrast-enhanced time-resolved cardiac CT for suspected structural heart disease
Who may be able to join
- In order to be eligible to participate in this study, an individual must meet all of the following criteria:
- Male or female, aged >= 18 years
- Undergoing clinically-indicated contrast-enhanced time-resolved cardiac CT for structural heart disease.
- Ability of subject to understand and the willingness to sign a written informed consent document.
Who cannot join
- An individual who meets any of the following criteria will be excluded from participation in this study:
- Unable to complete contrast-enhanced cardiac CT acquisition for any reason
- Unwilling to authorize future use of their imaging data for research
Trial locations and contacts
2 sites in 1 country. Contact the study team or a site near you to ask about taking part.
United States2 sites
Emory University Midtown Hospital
Atlanta, Georgia, 30308
Afua Harris, 404-686-5796, afua.m.harris@emory.edu
National Institutes of Health Clinical Center
Bethesda, Maryland, 20892
For more information at the NIH Clinical Center contact Office of Patient Recruitment (OPR), 800-411-1222 ext. TTY dial 711, ccopr@nih.gov
About this study
Background:
Doctors use computed tomography (CT) to get detailed pictures of the heart. CT uses x-rays to gather raw data. Computers assemble this data to make the images doctors look at. A new computer technique can make higher resolution images from the same CT scans. In this natural history study, researchers will take normal CT images of the heart. They will compare those images to super high-resolution (super high-res) images made with a super-computer.
Read more
Objective:
To improve the quality of heart CT scans by using new methods to create the images.
Eligibility:
People aged 18 years or older who need a CT scan for heart disease.
Design:
Participants will have a normal CT scan. A substance will be injected through a tube in their arm. They will lie on a table in a large, donut-shaped machine. An X-ray tube will move around their body, taking many pictures.
Researchers will use the normal CT scans to create super high-res images. They may do this at the NIH. They may also send the images to the company that made the CT scanner. Participants personal information will be removed before images are sent to the company. The personal information will be replaced by a code.
The super high-res images will be returned to the NIH.
Some information will be collected from participants medical records. Researchers will compare the normal scans to the super high-res images.
Participants' own doctors will also have a chance to see the super high-res images.
Participants' CT pictures will be stored and used for future NIH research.
Read the detailed description
Study Description:
This is an observational technical development study of advanced mathematical image reconstruction of raw CT data on patients with structural heart disease, in order to create better pictures.
The raw CT data are obtained in the course of clinically-indicated contrast-enhanced time-resolved cardiac CT without any change in clinical practice. The raw data are acquired on a specific imaging system (Canon Aquilion One) at the enrolling site(s).
Subjects are recruited among candidates selected clinically to undergo time-resolved cardiac CT in the diagnosis and treatment of structural heart disease. After consenting in writing, data are abstracted from their medical record, and the raw CT data used for standard medical care are copied. There is no investigational component to the standard clinical CT data acquisition and there is no change in radiation exposure from standard clinical CT examination. Subject participation concludes at the end of the standard clinical CT examination.
The raw CT data are sent with PII to NHLBI investigators who will remove identifiers and replace with a code before transmitting the image to the industry collaborator (Canon) for investigational advanced mathematical image reconstruction. The reconstructed CT images are then transmitted back to the NHLBI where the images are re-identified. The NHLBI investigators will then forward the reconstructed image to the site investigators. The advanced image reconstruction may be performed at NHLBI once adequate computer resources are available.
The research analysis consists of a comparison of standard CT images from the enrolling site with the advanced mathematical image reconstructions ("investigational images") for quality metrics.
The investigational advanced mathematical image reconstruction kernel may be changed iteratively for the purpose of technical development during this study.
The advanced image reconstruction is considered investigational because it is a commercial device not yet cleared for marketing by the US Food and Drug Administration. The advanced image reconstruction yields images with four-fold higher spatial resolution that standard images, based on the same standard CT acquisition. The advanced reconstruction images are labeled investigational and offer potential benefit to research subjects who are also patients. Therefore, the images are labeled investigational and returned to the local physician-investigators, to use at their discretion. This includes the possibility of informing medical decision-making based on investigational higher-resolution images.
Objectives:
The objective of this research protocol is to determine whether advanced mathematical image reconstructions create superior images compared with standard cardiac CT image reconstruction in patients with structural heart disease.
Endpoints:
The primary endpoint is a semi-quantitative measure of superiority of advanced mathematical image reconstruction compared with standard cardiac CT image reconstruction for study-specific fine detail.
Secondary endpoints include quantitative signal-to-noise (SNR), contrast-to-noise (CNR), and image noise.
Exploratory endpoints include Likert-type scales of image noise, artifacts, subjective image contrast, image sharpness, and diagnostic confidence.
- Conditions
- Structural Heart Disease
- Keywords
- Heart Disease, Image, Natural History
- Medical subject headings
- Heart Diseases
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| 1 | Adults undergoing clinically-indicated contrast-enhanced time-resolved cardiac CT for suspected structural heart disease |
What is being measured
The primary outcome is the main question the study is designed to answer.
The objective of this research protocol is to determine whether advanced mathematical image reconstructions create superior images compared with standard cardiac CT image reconstruction in patients with structural heart disease.
The primary endpoint is a semi-quantitative measure of superiority of advanced mathematical image reconstruction compared with standard cardiac CT image reconstruction for study-specific fine detail. Specifically, the endpoint is a Likert-like scale assessing visibility of small structures or fine detail.
Measured: 5 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted13 May 2022
- Study start28 Oct 2026 (estimated)
- Primary completion30 Jan 2031 (estimated)
- Study completion30 Jan 2031 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Structural Heart DiseaseStudies of the same condition, open and under way.
- More trials run by National Heart, Lung, and Blood Institute (NHLBI)The sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case only
- Time perspective
- Prospective
- Enrolment
- 1,000 participants (estimated)
Sponsor and investigators
- Sponsor type
- US National Institutes of Health
- Responsible party
- Sponsor
- Investigators
- Marcus Y Chen, M.D., Principal investigator, National Heart, Lung, and Blood Institute (NHLBI)
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05372627
- Sponsor's protocol ID
- 10000556
- Other IDs
- 000556-H
- Status last verified
- 2 Dec 2025
- First submitted
- 12 May 2022
- Last updated
- 23 Oct 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided