New imaging technique moves from lab to clinic

Four applications of the new imaging technique photoacoustic tomography are moving into clinical trials. One is to visualize the sentinel lymph nodes that are important in breast cancer staging; a second to monitor early response to chemotherapy; a third to image melanomas; and the fourth to image the gastrointestinal tract. Biomedical engineer Lihong Wang believes photoacoustic tomography might also allow early diagnosis of cancer because the technique can reveal the hypermetabolism that is cancer’s hallmark.