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Published on: September 24, 2017
[A new algorithm for affine motion compensation in PROPELLER MRI based on image domain].
Yanli Song1, Yanqiu Feng, Xiaowu Liu
1Institute for Medical Information & Technology, School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China.
Summary
This study introduces an improved image-domain algorithm for affine motion compensation in PROPELLER MRI. The new method effectively reduces motion artifacts in abdominal and soft tissue imaging.
Area of Science:
- Medical Imaging
- Image Processing
- Magnetic Resonance Imaging (MRI)
Context:
- Affine motion is prevalent in PROPELLER MRI of abdominal and soft tissues.
- Existing frequency-domain algorithms for motion compensation can introduce aliasing and artifacts.
Purpose:
- To develop a novel image-domain algorithm for affine motion compensation in PROPELLER MRI.
- To overcome limitations of current frequency-domain methods.
Summary:
- The proposed method utilizes image registration to obtain precise affine motion information.
- It corrects k-space coordinates and compensates inverse FFT images, followed by rotational compositing.
- This approach aims for more effective motion artifact suppression.
Impact:
- The new image-domain algorithm demonstrates superior performance in suppressing motion artifacts compared to existing frequency-domain techniques.
- This advancement can lead to clearer MRI images for abdominal and soft tissue diagnostics.
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