Singh S, Gibikote S V
Department of Radiodiagnosis and Imaging, Christian Medical College and Hospital, Vellore, Tamilnadu, India.
Australas Radiol. 2001 May;45(2):128-33. doi: 10.1046/j.1440-1673.2001.00892.x.
The MRI features of hydatid cysts were retrospectively studied in 12 patients to look for specific signal characteristics. Twelve patients in the series included eight with abdominal, two with abdominal-pelvic, one with a sacral and one with a lung hydatid cyst. The T1-, T2- and proton density (PD)-weighted images of spin-echo sequence were used for imaging. The signal characteristics of the hydatid parent cyst capsule and fluid, daughter cyst fluid, detached germinal membrane and surrounding soft tissue reaction were noted. Observations revealed that the capsule is best seen on T2- and PD-weighted images. The daughter cysts are best demonstrated on T1-weighted images, whereas the difference in the signal intensities of parent cyst and daughter cyst fluid is better demonstrated on T2-weighted and T1-weighted images, and the detached germinal membrane is best seen on T2- and PD-weighted images. The signal characteristics of hydatid cyst morphology can help distinguish it from other entities.
回顾性研究了12例包虫囊肿的MRI特征，以寻找其特定的信号特征。该系列中的12例患者包括8例腹部包虫囊肿、2例腹盆腔包虫囊肿、1例骶骨包虫囊肿和1例肺包虫囊肿。采用自旋回波序列的T1加权、T2加权和质子密度（PD）加权图像进行成像。记录了包虫母囊壁及囊液、子囊液、游离生发层膜及周围软组织反应的信号特征。观察发现，囊壁在T2加权和PD加权图像上显示最佳。子囊在T1加权图像上显示最佳，而母囊和子囊液信号强度的差异在T2加权和T1加权图像上显示更好，游离生发层膜在T2加权和PD加权图像上显示最佳。包虫囊肿形态的信号特征有助于将其与其他病变区分开来。
