Heart Disease Clinical Trial
Official title:
MR Compatible Accelerometer for Respiratory MOTion Measurement
A novel magnetic resonance (MR) compatible accelerometer for respiratory motion sensing (MARMOT) has been developed as a surrogate of the vendors' pneumatic belts. The aim is to model and correct respiratory motion for free-breathing thoracic-abdominal MR imaging and to simplify patient installation.
Respiratory motion is a serious problem in the acquisition of high-quality
thoracic/abdominal magnetic resonance (MR) images. Various methods have been proposed to
compensate the motion-induced artefacts, including breathholding, respiratory gating and
model-driven motion correction.
Breath-holding is the simplest among the three. However this conventional clinical method
induces various problem, including inefficient use of scanners, inconsistent organ position
between each breath-hold, imaging an altered physiological status and patient inconvenience
especially for those who suffer from respiration difficulties. Free-breathing MR acquisition
has therefore become of great clinical interest recently.
The investigators intend to examine the efficacy of the MARMOT sensors for:
- modelling and predicting the respiratory motions in abdominal scans,
- correcting for the respiratory motion in a cardiac cine scan, via a
reconstruction-based method.
;
Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic
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