MR Imaging of Soft Tissue Neoplasm after Treatment with Surgery and Radiation Therapy

磁振造影檢查對治療後軟部組織腫瘤追蹤評估

彭國權(Kwok Kuen Pang) ； Tudor Hudges

《中華放射線醫學雜誌》 25卷1期 (2000/02) Pp. 7-12

摘要

本文回溯性探討磁振造影檢查在診斷軟組織腫瘤的復發。從1994年2月到1998年8月在紐西蘭基督城公立醫院共有24個軟部組織腫瘤的病人接受磁振造影追蹤，在比較68個治療後的磁振造影檢查後，發現腫瘤塊診斷再發有最高的關聯性：敏感度為83%，特異性為93%。如果病人只接受電療或化療，增強顯影來追蹤有必要性，組織水腫或漬水對診斷復發幫忙不大。

關鍵字

軟部組織腫瘤 ； 磁振造影

並列摘要

Magnetic resonance imaging was used as a follow-up technique in 24 patients with known soft tissue neoplasm who underwent surgery and/or radiation therapy at Christchurch Hospital, New Zealand. Sixty-eight MR images were evaluated with regard to: (1) presence of a bulky mass; (2) presence of fluid collection; (3) signal intensity changes at T1 weighted and T2 weighted spin echo and fast spin echo sequences respectively; (4) high signal intensity at STIR T2 images; (5) an increase in paramagnetic contrast enhancement at the surgical region. Tumor recurrence can be differentiated from post-treatment tissue change in patients treated with surgery alone or with radiation by the presence of a discrete mass, with a sensitivity 83% and specificity 93%. For patients who received only radiation with or without chemotherapy, paramagnetic contrast enhancement is justified to monitor tumor activity. Fluid collection and high signal intensity at the surgical region is generally not specific in differentiating post treatment tissue change from tumor recurrence.

並列關鍵字

Magnetic resonance (MR) ； treatment planning ； Soft tissues ； neoplasms ； Soft tissues ； MR