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近距离放射疗法(brachytherapy,BT)是指当癌变组织包绕正常组织的时候,在目的区域局部施放大剂量放射线的治疗方法。在头颈部恶性肿瘤治疗中,通过计算机计算放射剂量治疗后,可以明显减少下颌部硬组织和软组织损伤。为了有效治疗头颈部恶性肿瘤,不仅要根据肿瘤的部位也同样要根据患者的身体和心理情况进行近距离放射疗法的选择。血运丰富和解剖位置原因促使口腔恶性肿瘤常常发生早期颈淋巴结转移、血行转移及部分远处转移,因此使用BT治疗头颈部恶性肿瘤后,医生需要注意的是预防头颈部肿瘤的转移和上呼吸道或者消化道的继发肿瘤,以及放射诱发的癌变。
Brachytherapy (BT) refers to the treatment of locally administered high-dose radiation in a target area when the cancerous tissue surrounds normal tissue. In the treatment of head and neck malignant tumors, calculated by computer treatment of radiation dose, can significantly reduce the mandibular hard tissue and soft tissue injury. In order to effectively treat malignant head and neck cancer, not only according to the tumor site also need to be based on the patient’s body and psychological conditions for brachytherapy options. Abundant blood supply and anatomical location causes oral malignant tumors often lead to early cervical lymph node metastasis, hematogenous metastasis and some distant metastases, so the use of BT treatment of head and neck cancer, the doctor should pay attention to the prevention of head and neck cancer metastasis and Secondary to upper respiratory tract or digestive tract, and radiation-induced carcinogenesis.