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| Comparative study of four types of 3D sequences at displaying the structure of both hip joints and measuring each acetabular index in children |
| WU Qian-qian, LIU Hong-sheng, CHEN Yuan-kai, KUANG Min-wei, LIU Zhen-qing |
| Medical Imaging Department, Guangzhou Women and Children’s Medical Center, Guangzhou 510120, China |
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Abstract Objective: To analyze and compare the reliability of 3D-DESS, 3D-CISS, 3D-MEDIC, and 3D-True FISP in displaying both hip joints and measurement of each acetabular index in children. Methods: With 3.0T MRI imaging system, four types of 3D sequence were performed in all 34 cases of 6～12 years old children. The SNR of femoral head and articular cartilage, CNR, subjective image quality score and each acetabular index was analyzed. Results: The SNR of articular cartilage was as followed: 3D-MEDIC>3D-DESS/3D-CISS>3D-True FISP. The SNR of femoral head was as followed: 3D-DESS/3D-CISS>3D-MEDIC>3D-True FISP. The CNR was as followed: 3D-MEDIC/3D-True FISP>3D-DESS/3D-CISS. The subjective image quality score was as followed: 3D-MEDIC/3D-DESS>3D-CISS>3D-True FISP. There was no statistically significant difference in the measurement of acetabular index. Conclusion: 3D-MEDIC sequence shows more advantages in cartilage displaying with high CNR, while 3D-DESS and 3D-CISS sequences show more advantages in bone displaying.
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Received: 24 January 2018
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2019, Vol. 30 
