Elliptical Subject Specific model for respiratory motion
Journal Article
2012
Permanent link to this Item
Authors
Journal Title
Journal of Cardiovascular Magnetic Resonance
Link to Journal
Journal ISSN
Volume Title
Publisher
Biomed Central Ltd
Publisher
University of Cape Town
Department
Faculty
Series
Abstract
Respiratory motion of the heart poses a problem for high resolution cardiac MR imaging. Prospective slice following uses the navigator position immediately prior to the imaging segment to correct the slice positions throughout the segment [1]. The navigator is typically placed over the right hemi-diaphragm and a fixed correction factor is used to adjust for the difference to the motion of the heart. The relationship between the motion of the heart and the superior-inferior motion of the diaphragm is approximately linear although highly subject specific, with an element of hysteresis [2]. We investigated a more complex model to incorporate non rigid transformation of the heart as well as hysteresis.
Description
Reference:
Burger, I., Meintjes, E. M., Keegan, J., & Firmin, D. N. (2012). Elliptical Subject Specific model for respiratory motion. Journal of Cardiovascular Magnetic Resonance, 14(1), 1-2.