肝恶性肿瘤的激光消融

Laser Ablation of Liver Malignant Tumor

目的：评价半导体激光对肝脏恶性肿瘤的治疗效果。材料和方法：经病理证实肝肿瘤１２例（原发肝癌４例，肝转移癌 ８例），用达美德半导体激光治疗仪行激光治疗。治疗所用功率为２Ｗ，能量为２８００～６４００Ｊ。６例于治疗后１４天行ＣＴ复查，评价坏死程度；６例分别于治疗后当天和第３天行Ｂ超随访。结果：应用激光消融即刻超声复查，发现原肿瘤低回声区出现气化所致高回声２３天以后，靶区呈３层回声中央呈无回声，中间高回声，周围低回声。１４天后，病灶均有不同程度的缩小。结论：对于一些无法手术或放疗的肝脏恶性肿瘤患者，半导体激光治疗提供了一种可行而有效的方法。

To evaluate the effect of semiconductive laser hyperthermia to treat the liver malignancy. Materials and Methods: 12 patients with confirmed liver tumor (4 hepatocytic carcinoma, 8 hepatic metastases) were treated with a Diomed semiconductive laser device. The power was 2W and the energy was 2800-6400J during the innatment. The extent of Laser induced necrosis in 6 patients was assessed by CY 14 days after the treatment. Six patients were checked by ultrasound to observe the treatment results right after the laser ablation and on 3rd days after the treatment. Results: Right after the laser ablation, instead of the original low echogenic tumor area,a high echogenic area representing the gas bubbles, was showed by sonography. Three days after the treatment ,the target was showed by ultrasound as 3 different zones: the inner zone was echo free, the medial zone was high echogenic and the outer zone was low echogenic. Fourteen days after the treatment, the size of all lesions was decreased to a greater or less degree. Conclusion: Laser ablation can be effectively and alternatively used to treat the primary and secondary hepatic cancers in some patients who can not be treated with surgery or radiation