Sathiaseelan V, Leybovich L, Emami B, Stauffer P, Straube W
Radiation Oncology Center, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO 63110.
Int J Radiat Oncol Biol Phys. 1991 Mar;20(3):531-9. doi: 10.1016/0360-3016(91)90066-d.
The heating potentials of two newly-developed microwave interstitial antennas are reported in this paper. The longitudinal (parallel to the antenna) and transverse (over a plane perpendicular to the antenna) specific absorption rate (SAR) distributions of single and an array of four parallel antennas were measured in a muscle equivalent phantom and their performance characterized at 915 MHz in terms of the following parameters: peak depth (location of the profile peak with respect to the surface), 50% HL (effective heating length over which SAR greater than 50% of the peak normalized SAR), dead length (axial length at the antenna tip with SAR less than 50% of peak normalized SAR), and the variations of the specific absorption rate pattern relative to the depth of insertion. The results are analyzed and discussed in terms of these parameters and other factors important in the clinical use of these antennas for effective interstitial hyperthermia.
本文报道了两种新开发的微波组织间天线的加热潜力。在肌肉等效体模中测量了单个天线以及由四个平行天线组成的阵列的纵向（平行于天线）和横向（在垂直于天线的平面上）比吸收率（SAR）分布，并在915MHz频率下根据以下参数对其性能进行了表征：峰值深度（剖面峰值相对于表面的位置）、50%半值层（比吸收率大于峰值归一化比吸收率50%的有效加热长度）、死区长度（天线尖端处比吸收率小于峰值归一化比吸收率50%的轴向长度）以及比吸收率模式相对于插入深度的变化。根据这些参数以及在这些天线用于有效组织间热疗的临床应用中重要的其他因素，对结果进行了分析和讨论。
