Sentinel Lymph Node Detection:The TruNode is a sterile, wireless, single-use gamma probe optimized for the most common radio-guided surgical procedures. The TruNode senses hotspots better than existing surgical gamma probes due to its innovative detector and heuristic audio feedback technology. It is simple to use, with finger-tip pushbutton switches. These switches give the surgeon complete control from the sterile field, including switching among high-sensitivity ‘scan’, high-resolution ‘point’ and I-125 ‘Seed’ modes. Voice reporting and statistical algorithms take the guesswork out of count-rate determination.