超声加热对治疗眼内肿瘤非常有用,但迄今眼科上只使用聚焦超声换能器,这种换能器要受到某些限制。使聚焦超声不穿经晶状体传播是可取的.但难以对肿瘤各处进行均匀加热。本试验使用直径为1 smm的平面换能器(超声频率为2.64MHz).并在其中心固定有直径为smm的吸收用的橡皮掩蔽层,并使换能器以每分钟25周的速度旋转,以便防止晶状体可能受热而损坏,同时还可使 Ultrasound heating is very useful for the treatment of intraocular tumors, but to date only focused ultrasound transducers have been used in ophthalmology, subject to certain limitations. It is advisable to focus ultrasound without transmitting through the lens, but it is difficult to heat the tumor evenly. In this experiment, a 1 mm diameter planar transducer (ultrasonic frequency 2.64 MHz) was used, and an absorbent rubber mask having a diameter of s mm was fixed at the center thereof and the transducer was rotated at a rate of 25 cycles per minute , In order to prevent the lens may be damaged by heat, while still making