Accelerated Contrast-Enhanced High Resolution Whole Heart Cardiac MRI

Terminated

• Conditions: Cardiac Disease
• Interventions: Drug: MRI Contrast

• Registration Number: NCT02550366
• Lead Sponsor: University of Minnesota

Brief Summary

Coronary artery disease (CAD) is the leading cause of death in the United States. Cardiac MRI is a non-invasive non-ionizing technique for a comprehensive cardiac exam, which can be used in the diagnosis of CAD. In this work, the investigators will develop and validate techniques for accelerated cardiac MRI, offering better volumetric coverage of the heart, improved contrast, and superior spatial and temporal resolutions.

Detailed Description

Coronary artery disease (CAD) is the leading cause of death in the United States, even though significant efforts have been made in prevention and diagnosis. The clinical gold standard for diagnosis of CAD is catheter-based invasive x-ray angiography, performed more than a million times per year. Of these examinations, up to 35% have been found to have no significant stenosis, yet these patients had to go through the potential risks and complications of an invasive test that further exposes the patient to ionizing radiation and iodinated contrast. Thus, non-invasive diagnostic alternatives are highly desirable.

Cardiac MRI (CMR) provides a method for a comprehensive non-invasive cardiac exam, including contractile functional assessment (cine) to detect wall-motion abnormality, myocardial CMR perfusion for diagnosing perfusion defects, viability assessment using late gadolinium enhancement for evaluation of acute and chronic myocardial infarction, and coronary MRI for the identification of stenosis. CMR is advantageous in several respects, since it does not require ionizing radiation or iodinated contrast, thereby facilitating repeated or follow-up scanning. However, long data acquisition time remains as one of its main limitations. Several approaches have been studied to facilitate rapid CMR acquisition. Nonetheless, the acquisition time for high-resolution CMR remains long, and spatial and temporal resolution is traded off for acquisition time. Therefore, developments of methods to reduce the duration of data acquisition beyond what is available now are appealing. The investigators will develop novel reconstruction methodologies for high-resolution CMR that learn the anatomical structures in the images being reconstructed. The investigators will validate these techniques in a range of contrast-enhanced CMR imaging protocols, providing better volumetric coverage of the heart, efficient use of the contrast agents, and higher spatial and temporal resolution.

Study Timeline

• Study First Submitted: 2015-08-27
• Study First Submitted QC: 2015-09-11
• Study First Posted: 2015-09-15
• Study Start: 2016-01-01
• Status Verified: 2024-01
• Primary Completion: 2024-01-19
• Study Completion: 2024-01-19
• Last Update Submitted: 2024-01-19
• Last Update Posted: 2024-01-23

Recruitment & Eligibility

• Status: TERMINATED
• Sex: All
• Target Recruitment: 44

Inclusion Criteria

• "Healthy" subjects 18 years and older
• Cardiovascular disease patients referred from the Department of Cardiology, who do not meet any of the exclusion criteria.

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Exclusion Criteria

• Exclusion criteria include those associated with the use of MR as the imaging modality. Patients with pacemakers, implanted cardioverter-defibrillators, intracerebral clips or other implants that are not MR incompatible, atrial flutter or frequent atrial or ventricular ectopic activity, weight over 250 pounds, or significant claustrophobia will be excluded.
• Subjects should not have the following which may be hazardous to their health or interfere with MRI examinations: cardiac pacemaker; implanted cardiac defibrillator; carotid artery vascular clamp; intravascular stents, filters, or coils; aortic clip; internal pacing wires; vascular access port and/or catheter; Swan-Ganz catheter; shunt (spinal or intraventricular); aneurysm clip(s); neurostimulator; electrodes (on body, head, or brain);heart valve prosthesis; any type of prosthesis (eye, penile, etc.); artificial limb or joint replacement; bone growth/fusion stimulator; bone/joint pin, screw, nail, wire, plate; metal rods in bones; Harrington rods (spine); metal or wire mesh implants; wire sutures or surgical staples; insulin pump or infusion device; any metal fragments (i.e. metal shop); any implant held in place by a magnet; cochlear, otologic, or ear implant.

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Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
CMR	MRI Contrast	Subjects with no contraindication to magnetic resonance imaging, who will undergo cardiac MRI scanning.

Primary Outcome Measures

Name	Time	Method
left and right ventricular volumes and masses,	1 and 3 years	quantitative measures
Quantitative comparison of the proposed techniques with existing imaging techniques	1 and 3 years	vessel length and sharpness
high-resolution approaches with existing standard resolution imaging technique	1 and 3 years	quantitative measures
infarct size,	1 and 3 years	quantitative measures
time-intensity-curve upslopes,	1 and 3 years	quantitative measures

Secondary Outcome Measures

Name	Time	Method
presence of stenosis (yes/no dichotomous)	1 and 3 years	Qualitative comparison
presence of infarct (yes/no dichotomous),	1 and 3 years	Qualitative comparison
image quality (scores range from 1 [poor] to 4 [excellent]).	1 and 3 years	Qualitative comparison

Trial Locations

Locations (1)

CMRR; 🇺🇸 Minneapolis, Minnesota, United States