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• Clinical Article •
Application of MR 3D-PD-SPACE sequence in evaluation of ligaments and tendon of the ankle in healthy volunteer
QIN Hong-wei  WANG Juan  HUANG Yao-qu  ZAO Xiao-mei  WU Hui-qiong 

DOI:10.3969/j.issn.1674-8034.2014.02.009.


[Abstract] Objective: To assess the value of MR 3D-SPACE sequence and conventional 2D-TSE sequence in evaluation of ligaments and tendon of the ankle in healthy volunteers.Materials and Methods: The ankles in 21cases were examined with MR imaging, including at coronal, sagittal, and axial postions 2D-fast spin echo-T2 Weighted imaging (2D-T2WI-FSE) and at sagittal position 3D-PD-SPACE. The signal noise ratio (SNR) of ligaments, tendon, cartilage, joint fluid and muscle, and the contrast noise ratio (CNR) of joint fluid-cartilage, fat-ligament and muscle-tendon were calculated. 2 radiologists independently assessed depiction of ligaments cartilage, joint fluid and tendons, as well as detection and grading of abnormalities of these structures (5-point Likert scale). The ability in visualization of artifacts, signal homogenity, partial volume effects and faintness were evaluated.Results: SPASE sequence provided a significantly higher SNR for all examined structures compared with conventional 2D sequence (P<0.01). SPASE sequence provided a significantly higher CNR for joint fluid-cartilage, joint fluid-ligament, joint fluid-fat and muscle-tendon compared with conventional 2D sequence (P<0.01). In imaging quality, SPACE sequence reconstructed imaging in displaying anterior talofibular ligament, calcaneofibular ligament, medial collateral ligament and calcaneonavicular ligament was better than conventional 2D sequence (P<0.05). At the same time, SPACE sequence reconstructed imaging in displaying extensor digitorum longus tendon, extensor pollicis longus, peroneus longus tendon, peroneus brevis tendon and flexor digitorum longus tendon was better than conventional 2D sequence. There was a significant difference between SPACE and conventional 2D sequence (P<0.05).Conclusion: 3D-PD-SPASE is a valuable technique for examination of ligament and tendon of ankle with multiplanar and curved reconstruction, which can provide more information for clinic.
[Keywords] Ankle；Magnetic resonance imaging

QIN Hong-wei Department of MRI, Foshan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Foshan 528000, Chine

WANG Juan Department of MRI, Foshan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Foshan 528000, Chine

HUANG Yao-qu Department of MRI, Foshan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Foshan 528000, Chine

ZAO Xiao-mei Department of MRI, Foshan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Foshan 528000, Chine

WU Hui-qiong Department of MRI, Foshan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Foshan 528000, Chine

Conflicts of interest   None.

Received  2013-12-18
Accepted  2014-01-30
DOI: 10.3969/j.issn.1674-8034.2014.02.009
DOI:10.3969/j.issn.1674-8034.2014.02.009.

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