Controlled Cardiac Computed Tomography
Cardiac computed tomography (CT) has been a hot topic for years because of the clinical importance of cardiac diseases and the rapid evolution of CT systems. In this paper, we propose a novel strategy for controlled cardiac CT that may effectively reduce image artifacts due to cardiac and respirator...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Hindawi Limited
2006-01-01
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| Series: | International Journal of Biomedical Imaging |
| Online Access: | http://dx.doi.org/10.1155/IJBI/2006/12819 |
| Summary: | Cardiac computed tomography (CT) has been a hot topic for years
because of the clinical importance of cardiac
diseases and the rapid evolution of CT systems. In this paper, we
propose a novel strategy for controlled cardiac CT that may
effectively reduce image artifacts due to cardiac and respiratory
motions. Our approach is radically different from existing ones
and is based on controlling the X-ray source rotation velocity and
powering status in reference to the cardiac motion. We
theoretically show that by such a control-based intervention the
data acquisition process can be optimized for cardiac CT in the
cases of periodic and quasiperiodic cardiac motions.
Specifically, we formulate the corresponding coordination/control
schemes for either exact or approximate matches between the ideal
and actual source positions, and report representative simulation
results that support our analytic findings. |
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| ISSN: | 1687-4188 1687-4196 |