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12 May 1995 Autocorrelation of ultrafast computed tomography coronary calcification scans
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Abstract
Ultrafast computed tomography is currently being investigated for the screening of early asymptomatic heart disease by evidence of the amount of calcium in the coronary arteries. The scanning technique for this test assumes that perfectly contiguous slices can be made by ECG gating and breath holds. Only subjective interpretation of the sequence of images is used to assess the adequacy of axial spatial sampling. This report investigates the autocorrelation matrix of thresholded binary images of heart cross sections in 10 subjects with and without ECG gating problems. In subject with gating problem the average correlation of adjacent slices was statistically reduced compared to subjects without gating problems. The incidence of extremely low or high adjacent slice correlations was greater in the poorly gated group. These preliminary results show that image based information may be used to assess the axial sampling adequacy of UFCT coronary calcification scans.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Christopher J. Wolfkiel "Autocorrelation of ultrafast computed tomography coronary calcification scans", Proc. SPIE 2434, Medical Imaging 1995: Image Processing, (12 May 1995); https://doi.org/10.1117/12.208684
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