Chinese Journal of Tissue Engineering Research ›› 2020, Vol. 24 ›› Issue (27): 4333-4337.doi: 10.3969/j.issn.2095-4344.2799

Previous Articles     Next Articles

T2-mapping quantitative imaging technique based on sequence optimization in the ankle talus osteochondral injury

Li Wei1, Chu Zhanfei2, Yu Zechen2, Yu Jinghong1, Jia Yanbo3, Wang Zongbo1   

  1. 1Department of Imaging, 3Department of Sports Medical Surgery, Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010030, Inner Mongolia Autonomous Region, China; 2Siemens Healthineers Co., Ltd., Shanghai 201318, China
  • Received:2020-01-18 Revised:2020-01-20 Accepted:2020-03-04 Online:2020-09-28 Published:2020-09-09
  • Contact: Yu Jinghong, Chief physician, Department of Imaging, Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010030, Inner Mongolia Autonomous Region, China
  • About author:Li Wei, Master, Associate chief physician, Department of Imaging, Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010030, Inner Mongolia Autonomous Region, China
  • Supported by:
    the Natural Science Foundation of Inner Mongolia Autonomous Region, No. 2018MS08024; the Science and Technology Program of Inner Mongolia Autonomous Region of China, No. 2019GG053

Abstract:

BACKGROUND: At present, DWI, DTI, T1-mapping, T2-mapping, and T2*-mapping are commonly used in cartilage functional imaging sequences in both scientific research and clinic. T2-mapping is often used for the quantitative analysis of cartilage, but it was obviously limited due to the long scanning time and poor experience of the patient.

OBJECTIVE: To quantitatively evaluate the talar cartilage injury degree of chronic lateral ankle instability patients by sequence optimized T2-mapping quantitative imaging technique.

METHODS: Totally 53 cases of chronic ankle instability (case group) and 46 healthy subjects (control group) were from the Second Affiliated Hospital of Inner Mongolia Medical University. They underwent conventional Magnetic Resonance Imaging and optimal T2-mapping quantitative imaging scanning. The total talar cartilage was divided into six compartments: internal anterior, internal medial, internal posterior, lateral anterior, lateral center and lateral posterior. Six T2 values were totally taken as each partition had one T2 value. The experiment was approved by the Ethics Committee of Inner Mongolia Medical University.

RESULTS AND CONCLUSION: The T2 values of internal anterior, internal medial, internal posterior areas of case group were higher than those of control group (P < 0.05). The T2 values of lateral anterior, lateral center and lateral posterior areas had no significant difference between the two groups (P > 0.05). The results showed that the talus cartilage injury mainly occurred in the internal talus in patients with chronic lateral ankle instability. The cartilage damage degree could be quantitatively evaluated by magnetic resonance T2-mapping imaging technique. It is possible that T2-mapping based on sequence optimization can be used in functional image routine scan. 

Key words: magnetic resonance imaging, talus osteochondral, ankle, T2-mapping, chronic lateral ankle instability, sequence optimization, arthroscope

CLC Number: