Towards Imaging the Beating Heart Usefully with a Conventional CT Scanner

Using a stroboscopic procedure based on electrocardiographic gating, "stationary" images of the beating heart can be obtained from X-ray computed tomography body scanners. However, due to the limited amount of time over which the heart motion is periodic, only a small number of projections...

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Bibliographic Details
Published inIEEE transactions on biomedical engineering Vol. BME-28; no. 2; pp. 123 - 127
Main Authors Mc Kinnon, Graeme C., Bates, R. H. T.
Format Journal Article
LanguageEnglish
Published United States IEEE 01.02.1981
Subjects
Computed tomography
Electrocardiography
Heart
Heart - diagnostic imaging
Image quality
Image reconstruction
Motion measurement
Optical imaging
Phase measurement
Time measurement
Tomography, X-Ray Computed
X-ray imaging
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Summary:Using a stroboscopic procedure based on electrocardiographic gating, "stationary" images of the beating heart can be obtained from X-ray computed tomography body scanners. However, due to the limited amount of time over which the heart motion is periodic, only a small number of projections (X-ray views) per phase of the heart cycle can be measured. It is suggested here how to obtain satisfactory image quality when only a limited number of projections per phase are available. The procedure involves recognizing that the material surrounding the heart is stationary, and so can be estimated using a large number of projections. It is shown how this estimate can be used to alter the measured projections in such a way that the image of the heart region can be significantly improved.
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ISSN:0018-9294
1558-2531
DOI:10.1109/TBME.1981.324785