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Proceedings Paper

Assessment of temporal jitter in ECG gated dynamic three-dimensional echocardiography
Author(s): Seemantini K. Nadkarni; Derek R. Boughner; Aaron Fenster
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Paper Abstract

Dynamic-3D echocardiography can potentially provide an accurate representation of the complex cardiac anatomy and dynamics over the cardiac cycle. However, the image quality of dynamic-3D echocardiography is limited by temporal jitter artifacts; which result from the asynchronous acquisition of video frames with respect to the cardiac cycle. In our study, we estimate the extent of temporal jitter in dynamic-3D echocardiography using in-vitro studies, and also provide a theoretical method to predict temporal jitter. Dynamic-3D images of a myocardial motion phantom were reconstructed and analyzed for cardiac wall motion at different heart rates. Our algorithm to quantify temporal jitter consisted of three steps. First, the distance of a reference plane to the surface of the phantom was computed and plotted as a 2D grayscale distance map in each 3D image. Second, surface variation maps were derived and finally, 2D jitter maps were plotted to provide a measure of temporal jitter in each 3D image at each cardiac phase. Temporal jitter was as large as 3.5 mm in peak systole and 1.5 mm in end diastole. The standard deviation in the jitter maps ranged from 0.5 mm in end-diastole to 1.0 mm in peak-systole; which agreed well with our theoretical analysis.

Paper Details

Date Published: 12 April 2000
PDF: 9 pages
Proc. SPIE 3982, Medical Imaging 2000: Ultrasonic Imaging and Signal Processing, (12 April 2000); doi: 10.1117/12.382257
Show Author Affiliations
Seemantini K. Nadkarni, John P. Robarts Research Institute (Canada) and Univ. of Western Ontario (Canada)
Derek R. Boughner, Univ. of Western Ontario (Canada) and London Health Sciences Ctr. (Canada)
Aaron Fenster, John P. Robarts Research Institute (Canada) and Univ. of Western Ontario (Canada)

Published in SPIE Proceedings Vol. 3982:
Medical Imaging 2000: Ultrasonic Imaging and Signal Processing
K. Kirk Shung; Michael F. Insana, Editor(s)

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