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Abstract #4202

Improve Free-Breathing Liver DWI with Motion Correction and Complex Averaging

Kai Liu1, Caizhong Chen1, Caixia Fu2, Omar Darwish3, Shenxiang Rao1, and Mengsu Zeng1
1Radiology, Zhongshan Hospital, Fudan University, Shang hai, China, 2MR Application Development, Siemens Shenzhen Magnetic Resonance Ltd.,, Shen Zhen, China, 3MR Application Predevelopment, Siemens Healthineers AG, Forchheim, Germany

Synopsis

Keywords: Diffusion Reconstruction, Diffusion Reconstruction, Complex Averaging; Motion correction

Motivation: Free-breathing (FB) abdominal DWI is prone to motion artifacts from irregular breathing and cardiac motion, with high b-value DWI often impacted by noise bias introduced by magnitude averaging.

Goal(s): This study aimed to validate motion correction and complex averaging for enhanced liver DWI image quality.

Approach: FB DWI was performed with and without motion correction and complex averaging on patients with liver lesions. Image quality and ADC values were compared.

Results: FB DWI reconstructed with advanced processing exhibited significantly better image quality, reduced motion artifacts, higher SNR and CNR.

Impact: Advanced processing techniques, including motion correction and complex averaging, significantly reduce motion artifacts and enhance image quality in free-breathing abdominal diffusion imaging. These improvements make it highly beneficial for adoption in clinical practice.

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