60.圖為何種射源所形成的矢狀面等劑量分布曲線? (A)Ra-2..-阿摩線上測驗
1F Goal 國二下 (2019/07/08)
Palladium-103 103Pd seeds have recentlynbecome available for use in brachytherapy. Their clinical applications arensimilar to those of 125I. Having a shorter half-life (17 days) than thatnof 125I (59.4 days), 103Pd may providena biologic advantage in permanent implants because the dose is delivered at anmuch faster rate (22). The palladium-103nseed model 2003 consists of a laser-welded titanium tube containing twongraphite pallets plated with 103Pd (Fig. 15.5).nA lead marker between the pallets provides radiographic identification. 以上引用自: https://radiologykey.com/brach... 查看完整內容 |