MR水成像技术诊断泡状棘球蚴病的价值

MR hydrography in the diagnosis of alveolar echinococcosis

目的探讨MR水成像（MRH）技术在泡状棘球蚴病临床诊断中的作用。方法搜集34例临床怀疑为泡状棘球蚴病的患者，其中32例经手术和病理证实为泡状棘球蚴包虫病，均行常规MR和MRH检查，以病理结果为金标准，比较两种方法的灵敏性、特异性和准确性。2种方法结果符合率的比较采用U检验。结果32例泡状棘球蚴病患者的128个病灶中，常规MRI检查发现68个、MRH发现108个。常规MRI检查泡状棘球蚴的灵敏性为（53．13±0．04）％，特异性为（92．59±0．05）％，符合率为（60．00±0．03）％；MRH检查泡状棘球蚴病灶的灵敏度为（84．38±0．03）％，特异度（81．48±0．08）％，符合率为（83．87±0．03）％，常规MRI和MRH符合率比较，差异具有统计学意义（U=5．44，P〈0．01）。结论MRH技术可以提高泡状棘球蚴病病灶检出的灵敏性和符合率。

Objective To investigate the clinical application of MR hydrography （MRH） in diagnosing alveolar echinococcosis （AE）. Methods Thirty-four patients with suspected alveolar echinococcosis were examined using MRH in addition to conventional magnetic resonance imaging（cMRI）. Thirty-two of the 34 patinets had surgery and the pathological diagnoses were alveolar echinococcosis. Results Among 128 lesions in these 32 patients found at surgery, cMRI examination found 68 lesions and MRH found 108 lesions. The sensitivity of cMRI examination was （53. 13 ± 0. 04）% , the specificity was （92. 59 ± 0. 05） % , concordance rate was （ 60. 00 ± 0. 03 ） %. The sensitivity of MRH examination was （ 84. 38 ± 0. 03）%, the specificity was （81.48 ± 0. 08）%, concordance rate was （83.87 ± 0. 03）%. Comparing concordance rate of cMRI examination and MRH, significant difference was found （ U = 5.44, P 〈 0. 01 ）. Conclusion MRH technique can raise the sensitivity and concordance rate for diagnosing AE. This technique should be employed in the evaluation of patients suspected of AE.