Abstract
A technique is presented for reconstructing a three-dimensional myocardial strain map from a set of parallel-tagged magnetic resonance images. This technique was demonstrated on high resolution tagging data from an anesthetized dog. The strain was reconstructed with a precision of ±6.0% for a tag detection accuracy of 0.1mm and a tag spacing of 2.5mm. The reconstruction spatial resolution was demonstrated by reconstructing a displacement field in response to a displaced cloud of tag points. In the circumferential direction, the cloud that resulted in a 50% displacement attenuation had a full width at half maximum (FWHM) of 5.4mm±0.4mm (mean ± standard deviation). The FWHM of the strain field reconstructed from a single in plane displaced tag point was 5.2mm±0.3mm. CONCLUSION: The combination of high-resolution parallel-tagged MR images and the model-free, coordinate system-free strain reconstruction technique presented in this paper is capable of producing accurate, high-resolution strain maps of the myocardium.
| Original language | English (US) |
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| Title of host publication | Southern Biomedical Engineering Conference - Proceedings |
| Editors | J.D. Bumgardner, A.D. Puckett |
| Publisher | IEEE |
| Pages | 246-249 |
| Number of pages | 4 |
| State | Published - 1997 |
| Externally published | Yes |
| Event | Proceedings of the 1997 16th Southern Biomedical Engineering Conference - Biloxi, MS, USA Duration: Apr 4 1997 → Apr 6 1997 |
Other
| Other | Proceedings of the 1997 16th Southern Biomedical Engineering Conference |
|---|---|
| City | Biloxi, MS, USA |
| Period | 4/4/97 → 4/6/97 |
ASJC Scopus subject areas
- General Engineering