Computer-assisted calculation of myocardial infarct size shortens the evaluation time of contrast-enhanced cardiac MRI.
Clin Physiol Funct Imaging
; 28(1): 1-7, 2008 Jan.
Article
in En
| MEDLINE
| ID: mdl-18005080
ABSTRACT
BACKGROUND:
Delayed enhancement magnetic resonance imaging depicts scar in the left ventricle which can be quantitatively measured. Manual segmentation and scar determination is time consuming. The purpose of this study was to evaluate a software for infarct quantification, to compare with manual scar determination, and to measure the time saved.METHODS:
Delayed enhancement magnetic resonance imaging was performed in 40 patients where myocardial perfusion single photon emission computed tomography imaging showed irreversible uptake reduction suggesting a myocardial scar. After segmentation, the semi-automatic software was applied. A scar area was displayed, which could be corrected and compared with manual delineation. The different time steps were recorded with both methods.RESULTS:
The software shortened the average evaluation time by 12.4 min per cardiac exam, compared with manual delineation. There was good correlation of myocardial volume, infarct volume and infarct percentage (%) between the two methods, r = 0.95, r = 0.92 and r = 0.91 respectively.CONCLUSION:
A computer software for myocardial volume and infarct size determination cut the evaluation time by more than 50% compared with manual assessment, with maintained clinical accuracy.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Software
/
Image Interpretation, Computer-Assisted
/
Magnetic Resonance Imaging, Cine
/
Contrast Media
/
Gadolinium DTPA
/
Myocardial Infarction
Type of study:
Evaluation_studies
/
Guideline
/
Prognostic_studies
Limits:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
Clin Physiol Funct Imaging
Journal subject:
FISIOLOGIA
/
PATOLOGIA
Year:
2008
Document type:
Article
Affiliation country:
Suecia