A control system approach to subject specific prospective respiratory motion correction in cardiac MRI
Includes bibliographical references. === Respiratory motion of the heart is a problem for high-resolution cardiac MRI. Diaphragmatic navigator gating with a 5mm acceptance window is most commonly used to address this but has an inherently low respiratory efficiency that is further compromised by res...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Doctoral Thesis |
| Language: | English |
| Published: |
University of Cape Town
2014
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/11427/10220 |
| Summary: | Includes bibliographical references. === Respiratory motion of the heart is a problem for high-resolution cardiac MRI. Diaphragmatic navigator gating with a 5mm acceptance window is most commonly used to address this but has an inherently low respiratory efficiency that is further compromised by respiratory drift. A novel method is presented that uses data from multiple navigators prior to the imaging segment as input for a control system to predict the diaphragm position throughout the imaging segment and correct the slice position in real time. |
|---|