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目的 :本文旨在观察和探讨头颈部肿瘤放疗后软组织损伤的CT表现 ,以提高对头颈部放射性损伤的影像学认识。方法 :对头颈部恶性肿瘤放疗后 70例作CT扫描观察 ,计 13 3次扫描 ,扫描 1次 3 8例 ,2次 15例 ,3次以上 17例。观察时间分为放疗后近期 ( 6个月以内 )、中期 ( 6～ 12个月 )和远期 ( 12个月以上 )。放疗剂量为 40～ 72Gy(单程放疗 )、14 0Gy(二程及二程以上放疗 )。全部病例均有放疗前CT图像对照。结果 :CT所见包括皮下脂肪层变薄 2 6例 ,皮肤增厚15例 ,皮肤凹陷 2 6例 ,肌肉萎缩 19例 ,颈深筋膜增厚 15例 ,皮下纤维性增生 18例 ,涎腺萎缩 19例 ,复发性肿瘤 18例。结论 :CT对头颈部软组织放射性损伤的表现和程度的判断是准确的 ,能为临床治疗提供参考依据
Objective: This article aims to observe and explore the head and neck cancer after radiotherapy soft tissue injury of the CT findings in order to improve the head and neck radiological damage imaging understanding. Methods: The CT scan of 70 patients with head and neck malignant tumor after radiotherapy was performed, including 13 3 scans, 38 scans once, 15 screened twice and 17 screened more than 3 times. Observation time is divided into short-term after radiotherapy (within 6 months), medium (6 to 12 months) and long-term (12 months). Radiation dose 40 ~ 72Gy (one-way radiotherapy), 14 0Gy (two-way and two-way radiotherapy). All cases had CT images before radiotherapy. Results: CT findings included 26 cases of subcutaneous fat layer thinning, 15 cases of skin thickening, 26 cases of skin degeneration, 19 cases of muscle atrophy, 15 cases of deep cervical fascia, 18 cases of subcutaneous fibrous hyperplasia, salivary gland 19 cases of atrophy, recurrent tumors in 18 cases. Conclusion: CT is accurate in judging the extent and degree of radioactive injury of head and neck soft tissue, and can provide a reference for clinical treatment