愕部恶性肿瘤近距离放疗中义齿基托布源器的设计与制作

目的:设计与制作含有125I放射性粒子的义齿基托布源器,应用其对腭部腺源性恶性肿瘤进行术后放射性粒子近距离放射治疗。方法:42例硬腭或软硬腭交界处的腺源性恶性肿瘤患者,经局部手术切除术后佩戴含有125I放射性粒子的义齿基托布源器进行近距离放疗。义齿基托布源器由3部分组成:组织面为树脂层,用于容纳放射性粒子;磨光面为钴铬合金层,用于对正常组织提供放射性防护;还有起固位作用的卡环。义齿基托布源器的固位与稳定参考可摘局部义齿的设计原则设计,如患者伴有上颌牙齿缺失,则可在布源器上排列人工牙,以同期恢复患者咀嚼功能。结果:42例患者佩戴使用义齿基托布源器良好,放射性粒子没有移位、丢失。随访12~72个月,照射区组织愈合良好,恶性肿瘤未见复发。所有患者均未观察到严重并发症。结论:放射性粒子治疗腭部恶性肿瘤时,义齿基托布源器有利于实现靶区治疗,该方法具有方便、有效,并对周围正常组织具有放射性防护的特点。

Denture-like applicators with radioactive seeds for treatment of palatal malignant tumors

Objective:To design and make denture-like applicators containing radioactive seeds for treatment of malignant tumors in the hard palate where only thin layers of soft tissues are available.Methods: Forty-two patients were treated with denture-like applicators containing 125I radioactive seeds after local resection of malignant salivary gland tumors the hard palate.Sixteen patients were male,and 26 patients were female.The average age was 37.6 years old(18-74 years old).The denture-like applicators were cons...