DocumentCode :
380132
Title :
Automated quantitation of non-steady flow and lumen area based on temporal correlation
Author :
Lee, Sang H. ; Alperin, Noam
Author_Institution :
Dept. of Radiol., Illinois Univ., Chicago, IL, USA
Volume :
3
fYear :
2001
fDate :
2001
Firstpage :
2613
Abstract :
A robust method for automated quantitation of nonsteady flow and lumen area is presented. The method utilizes temporal information to differentiate between pixels within the lumen and a background region. Cross correlation (CC) is applied to identify the pixels with temporal information similar to a reference obtained from a pixel within the lumen region. The new method incorporates a computation of an optimal threshold; therefore, it provides an unbiased observer-independent quantitation. We have conducted in vitro and in vivo experiments to evaluate the reproducibility and accuracy of the method. Validation of the accuracy of the automated method was performed only on a phantom study since there is no other method that can provide the true lumen size measurement in vivo. The reproducibility of the automated method was evaluated using MRI data from subjects.
Keywords :
biomedical MRI; blood flow measurement; cardiovascular system; correlation methods; image segmentation; medical image processing; MRI data; accuracy; automated quantitation; background region; cardiovascular diseases; cross correlation; in vitro experiments; in vivo experiments; lumen area; lumen region; nonsteady flow; optimal threshold; phantom study; pixels; reproducibility; robust method; temporal correlation; temporal information; unbiased observer-independent quantitation; Arteries; Cranial pressure; Fluid flow measurement; Image segmentation; In vitro; In vivo; Magnetic field measurement; Magnetic resonance imaging; Pressure measurement; Radiology;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE
ISSN :
1094-687X
Print_ISBN :
0-7803-7211-5
Type :
conf
DOI :
10.1109/IEMBS.2001.1017317
Filename :
1017317
Link To Document :
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