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Application value of 3D-MRI based on compressed SENSE technology in meniscal injuries
Peiqi Ma1, Yushan Yuan1, Zongxi Zhang1, Bin Peng1, Jian Xu1, and Xiuzheng Yue2
1Fuyang People's Hospital，Anhui Province，China, Fuyang, China, 2Philips Healthcare, Beijing, China, Beijing, China
1Fuyang People's Hospital，Anhui Province，China, Fuyang, China, 2Philips Healthcare, Beijing, China, Beijing, China
Synopsis
The compressed SENSE(CS-SENSE) technique, which is the combination of the parallel imaging technique SENSE with compressed sensing, has now been widely used in acceleration of MR examinations of various anatomies and anatomical contrasts. The purpose of this study was to explore the possibility of CS-SENSE in 3D knee joint imaging and its diagnostic value for meniscus injury types.
Purpose
To investigate the feasibility of compressed SENSE in 3D-MRI of knee joint and its clinical value in meniscal injuries.Introduction
MRI has been widely used to observe meniscus injury. At present, conventional 2D MRI sequences of knee joints include proton weighted imaging (PDWI) sequence in transverse, sagittal and coronal planes and T1-weighted imaging (T1WI) sequence in sagittal view. Some patients with pain intolerance have difficulty in keeping still. Compressed SENSE (CS-SENSE) technology is the combination of the parallel imaging technique SENSE and compressed sensing, which can significantly shorten the acquisition time. The purpose of this study was to investigate the feasibility of CS-SENSE in 3D acquisition for knee joint scanning and its value in meniscus injury.Materials and methods
Thirty healthy volunteers for right knee examinations and 26 patients with knee pain were performed on the 3.0T MRI scanner (Ingenia CX, Philips). The 30 healthy volunteers, protocol consisted of conventional 2D fat suppression(fs) PDWI scanning in 3 planes of sagittal, coronal and traverse and CS-SENSE 3D-PDWI scanning in sagittal plane. CS-SENSE 3D images were reformatted into sagittal, coronal and traverse axis with the slice thickness, gap and coverage consistent with the conventional 2D scanning. The acquired CS-SENSE 3D data was further reconstructed with 3 denosing（DS） methods (CS-DSweak, CS-DSmedium and CS-DSstrong). Each volunteer obtained a total of 4 groups of images and the image quality in sagittal plane was evaluated through subjective and objective evaluation. Twenty-six patients were examined only by CS-SENSE 3D-PDWI, and the results assessed by two radiologists with 10 years of experience were compared with arthroscopy.Results
The scan time of CS-SENSE 3D reduced by 54.11% when compared with conventional 2D knee PDWI. The subjective image quality evaluation results by two radiologists with 10 years of experience were highly consistent (K =0.91), and the radiologists tended to regard the images in the CS-DSmedium group as the best diagnostic images. In the objective evaluation, SNR of CS-DSstrong was the highest in the four groups of images (P <0.05), and there was no statistically significant difference in CNR between the CS-DSmedium group and the conventional group. The type of tear shown in CS-SENSE 3D images in 26 patients with meniscus tear was highly consistent with the intraoperative arthroscopy results (K =0.94).Conclusion
In summary, CS-SENSE 3D technology can effectively accelerate the scanning speed, andprovide the same knee joint image quality in reformatted images when compared with the conventional 2D MR images. Meanwhile, CS-SENSE 3D knee joint imaging has a high consistency with arthroscopy in the observation of meniscus injury types and is worthy of clinical promotion and use.Acknowledgements
No acknowledgement found.References
[1]ShakoorD, Kijowski R, Guermazi A, et al. Diagnosis of knee meniscal injuries by using three-dimensional MRI: A systematic review and meta-analysis of diagnostic performance[J]. Radiology, 2019,290(2):435-445.
[2] Candes EJ, Romberg JK, Tao T. Stable signal recovery from incomplete and inaccurate measurements[J]. CommunPur Appl Math，2006, 59(8): 1207-1223.
[3] Bratke G, et al. Accelerated MRI of the Lumbar Spine Using Compressed Sensing: Quality and Efficiency[J]. MagnReson Imaging 2018, 49: 164-175.
Figures
Figures 1A-1D show conventional 2D-MRI sagittal fsPDWI, CS-DSweak, CS-DSmediumand CS-DSstrongspectively.Figures 2A and 2B showlongitudinal cracks of the lateral meniscus(thin arrow). 2A is the reformatted transverse axis of CS-SENSE 3D scanning image (slicethickness of 1mm), and 2B is the reformatted sagittal images. Figures 3A and 3B show the horizontal crack in the posterior angle of the medial meniscus. 3A is the reformatted transverse axis of CS-SENSE 3D scanning image (slicethickness of1mm), and 3B is the reformatted sagittal images.