摘要
目的 探讨T2 Map和mDIXON QuantMRI评价拇外翻(HV)肌肉病变的价值。方法 纳入我院初诊HV患者9人13足,健康志愿者6人10足为对照组。行负重X线片,常规MRI及T2 map、mDIXON Quant检查。在X线片测量拇外翻角和第1、2跖骨间角,足内、外侧纵弓。功能序列测量拇展肌,拇收肌斜头、横头,拇短屈肌内、外侧头T_(2)值和脂肪分数。应用U检验比较HV组与对照组T_(2)值和脂肪分数的差异,Spearman相关检验评价T_(2)值、脂肪分数与平片角度之间相关性。结果 HV组拇短屈肌内、外侧头,拇收肌斜头和横头T_(2)值较对照组均增高(P<0.05)。拇收肌斜头T_(2)值与拇外翻角正相关(R=0.611,P=0.027),与内侧纵弓角度正相关(R=0.69,P=0.009)。两组脂肪分数无统计学差异。结论 T2 map可以定量评价HV肌肉病变,HV患者拇短屈肌和拇收肌水肿更明显,拇收肌斜头水肿程度与HV严重程度和扁平足正相关。
Objective To evaluate the value of T2 Mapping and mDIXON QuantMRI quantitative techniques in evaluating muscle lesions in patients with Hallux Valgus(HV).Methods 9 adult patients(13 feet)with newly diagnosed HV in our hospital were enrolled,and 6 healthy volunteers(10 feet)were used as normal control group.All subjects underwent standard weight-bearing AP and lateral X-ray films,foot routine MRI and functional magnetic resonance T2 mapping and mDIXONQuant examination.The hallux valgus angle(HVA)and the interphalangeal angle(IMA)of the first and second metatarsals were measured on the weight-bearing AP X-ray film,and the medial and lateral longitudinal arch of the foot were measured on the weight-bearing lateral X-ray film.T2 values and fat fractions of Abductor Hallucis,Obliqus head of Adductor Hallucis,Transverse head of Adductor Hallucis,Medial head of Flexor Hallucis Brevis,Lateral head of Flexor Hallucis Brevis were measured on T2mapping and mDIXONQuant sequences.Mann-Whitney U test was used to compare the difference of T2 values and fat fractions between HV group and healthy control group.Spearman correlation test was used to evaluate the correlation between T2 value,fat fractions and the angles measured by plain film.Results The T2 values of the Obliquus head of Adductor Hallucis,Transverse head of Adductor Hallucis,Medial head of Flexor Hallucis Brevis,Lateral head of Flexor Hallucis Brevis in HV patients were higher than those in normal controls(P<0.05).The T2 value of the Oblique head of Adductor Hallucis was positively correlated with the HVA(R=0.611,P=0.027),and also positively correlated with the angle of the medial longitudinal arch(R=0.69,P=0.009).There was no significant difference in the fat fraction of Flexor Hallucis Brevis,Adductor Hallucis,and Adductor Hallucis between HV group and control group.Conclusion T2 mapping can quantitatively evaluate HV muscle lesions.HV patients have more obvious edema in Adductor Hallucis and Flexor Hallucis Brevis.The degree of edema in oblique head of the Adduct
作者
张慧慧
孟祥虹
王植
ZHANG Hui-hui;MENG Xiang-hong;WANG-Zhi(Tianjin University of Traditional Chinese Medicine,Tianjin 301617,China;Department of Radiology,Tianjin Hospital,Tianjin University,Tianjin 300211,China)
出处
《中国CT和MRI杂志》
2023年第5期144-147,共4页
Chinese Journal of CT and MRI
基金
天津市天津医院院级课题(TJYY1809)。
