長期以來加馬偵檢器曾一直被使用於局部身體的掃描。近來由於淋巴偵檢技術庭.用於外科治療黑色素飛及事L痞的進展，大幅擴展了手術用加馬偵檢器的應用。由於前哨淋巴結切除術容易施行且有利於病人痊癒'這項技術已成為治療黑色素瘤及乳弟的標準程序。當外科醫師期待對病人施行前哨淋巴結切除術峙，就有必要學習如何利用手術用加馬偵檢器協助定位前哨淋巴結。本文探討手術用偵檢系統一些重要的規格特性，並介紹一些將來可能運用於腫瘤外科的核醫裝備

The gamma probe has long been used for scanning a region of the body. Until recently， the advent of the application of lymphatic mapping technique in melanoma and breast cancer during surgery has made the use of the intra-operative gamma probe widespread. With the ease of use and patient benefits that sentinel lymph node dissections offer， this technique has become the standard of management for melanoma as well as breast cancer patients. While surgeons at hospitals are eager to perform sentinel lymph node dissections in patients， there is a learning period for surgeons to be able to localize the sentinel lymph node with intra-operative gamma probe. Several critical characteristics for intra-operative detection systems are discussed in this article.