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Optimized protocols for cardiac magnetic resonance imaging in patients with thoracic metallic implants
- Source :
- Pediatr Radiol
- Publication Year :
- 2015
- Publisher :
- Springer Science and Business Media LLC, 2015.
-
Abstract
- BACKGROUND: Cardiac magnetic resonance (MR) imaging is a valuable tool in congenital heart disease; however patients frequently have metal devices in the chest from the treatment of their disease that complicate imaging. Methods are needed to improve imaging around metal implants near the heart. Basic sequence parameter manipulations have the potential to minimize artifact while limiting effects on image resolution and quality. OBJECTIVE: Our objective was to design cine and static cardiac imaging sequences to minimize metal artifact while maintaining image quality. MATERIALS AND METHODS: Using systematic variation of standard imaging parameters on a fluid-filled phantom containing commonly used metal cardiac devices, we developed optimized sequences for steady-state free precession (SSFP), gradient recalled echo (GRE) cine imaging, and turbo spin-echo (TSE) black-blood imaging. We imaged 17 consecutive patients undergoing routine cardiac MR with 25 metal implants of various origins using both standard and optimized imaging protocols for a given slice position. We rated images for quality and metal artifact size by measuring metal artifact in two orthogonal planes within the image. RESULTS: All metal artifacts were reduced with optimized imaging. The average metal artifact reduction for the optimized SSFP cine was 1.5+/−1.8 mm, and for the optimized GRE cine the reduction was 4.6+/−4.5 mm (P
- Subjects :
- Adult
Heart Defects, Congenital
Male
medicine.medical_specialty
Adolescent
Image quality
Aorta, Thoracic
Article
Imaging phantom
Young Adult
Metal Artifact
Cardiac magnetic resonance imaging
medicine
Humans
Radiology, Nuclear Medicine and imaging
Child
Cardiac imaging
Artifact (error)
medicine.diagnostic_test
Phantoms, Imaging
business.industry
Myocardium
Reproducibility of Results
Magnetic resonance imaging
Prostheses and Implants
Steady-state free precession imaging
Magnetic Resonance Imaging
Metals
Child, Preschool
Pediatrics, Perinatology and Child Health
Female
Radiology
Artifacts
business
Biomedical engineering
Subjects
Details
- ISSN :
- 14321998 and 03010449
- Volume :
- 45
- Database :
- OpenAIRE
- Journal :
- Pediatric Radiology
- Accession number :
- edsair.doi.dedup.....1e269ecc37ab71b69bf8cd43ae4d9243