MR imaging of malignant soft-tissue tumors.

摘要: Nearly 6000 cases of soft-tissue sarcoma are diagnosed annually. Many evaluated with MR imaging, which, because its superior tissue contrast, has become the most important tool for detecting, staging, and monitoring treatment primary tumor. Although irregular margins, invasion bone, vascular encasement indicators malignancy, sarcomas may also be localized well-circumscribed. Regardless their histology, similar in intensity to muscle on T1-weighted images intermediate high signal relative fat T2-weighted images. The addition paramagnetic contrast agents can help differentiate between recurrent tumor postoperative fluid collections.