title: Role of magnetic resonance spectroscopy and susceptibility weighted imaging in cerebral alveolar echinococcosis.
abstract: BACKGROUND
  To analyze the characteristic performance of magnetic resonance spectroscopy (MRS) and susceptibility weighted imaging (SWI) in cerebral alveolar echinococcosis (CAE).
  
  
  METHODS
  We retrospectively analyzed 10 clinical-identified CAE cases MR performance, and summarized the MRS and SWI performance of CAE.
  
  
  RESULTS
  The 10 cases of CAE all had the history of primary HAE, among who 6 cases had single lesion (60%), while the rest 4 cases had multiple lesions (40%); and 4 cases were concomitant with lung metastases. MRI performance: T2WI lesions were coal-like low-signal shadow, with multiple small vesicles inside the lesions; MRS performance: NAA, Cho and Cr significantly reduced, an abnormally high and steep crest was found at 1.4 ppm; the phase diagram and strength diagram of SWI showed isointensity.
  
  
  CONCLUSIONS
  The MRS and SWI of CAE could provide important supplemental information for the diagnosis of CAE, especially the abnormally high and steep crest at 1.4 ppm provide the reliable image basis for the diagnosis and differential diagnosis of CAE.
authors.affiliation: Dept. of Radiology (MRI), Qinghai Provincial People's Hospital, Xining, China.
authors.forename: Guocai
authors.initials: G
authors.lastname: Yang
authors.affiliation: Dept. of Radiology (MRI), Qinghai Provincial People's Hospital, Xining, China.
authors.forename: Qingxin
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Dept. of Radiology (MRI), Qinghai Provincial People's Hospital, Xining, China.
authors.forename: Guibo
authors.initials: G
authors.lastname: Tang
authors.affiliation: Dept. of Radiology (MRI), Qinghai Provincial People's Hospital, Xining, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Xu
authors.affiliation: Dept. of Radiology (MRI), Qinghai Provincial People's Hospital, Xining, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Yang
authors.affiliation: Dept. of Radiology (MRI), Qinghai Provincial People's Hospital, Xining, China.
authors.forename: Jianzhong
authors.initials: J
authors.lastname: Guo
authors.affiliation: Dept. of Radiology (MRI), Qinghai Provincial People's Hospital, Xining, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Liang
authors.affiliation: Dept. of Radiology (MRI), Qinghai Provincial People's Hospital, Xining, China.
authors.forename: Yonghong
authors.initials: Y
authors.lastname: Qi
keywords: Cerebral alveolar echinococcosis; Magnetic resonance spectroscopy; Susceptibility weighted imaging