Duties
He has been in charge of everything from manufacturing to development, new business planning, sales, etc. at a major medical device manufacturer, and currently oversees research in the biomedical field using light at the central research laboratory of a major optical device manufacturer. In the life science field, biophotonic measurement technology that enables non-contact, non-invasive, and unconscious measurement is highly anticipated, and since he has been involved in various R&D projects, he has accumulated expertise in this field (such as brain function measurement using light, cancer diagnosis, and blood glucose level measurement). Based on these achievements, in parallel with his current position, he also serves as an extramural lecturer at Kyoto University Graduate School, a part-time lecturer at the University of Tokyo Graduate School, and a director of a special-purpose subsidiary.

Studies
He has been developing a time-resolved diffuse optical tomography (DOT) imaging system involving multi-channel time-resolved spectroscopy. It is highly anticipated that DOT will make it possible to capture images of breast tumors and brain activity in three-dimensions by means of near-infrared light. The use of DOT especially for breast cancer diagnosis, so-called optical mammography, is not expected to provide precise anatomical information; however, it could provide evidence of angiogenesis, metabolic activity and oxygen consumption in the tumor. His system uses the time-correlated single photon counting method. The detector modules and the signal processing circuits were custom-made to obtain a high signal to noise ratio, and high temperature stability with a high temporal resolution. The system had excellent reproducibility in three dimensions and enabled comparison of the total hemoglobin concentration images of the breast during chemotherapy. Therefore, his system also has the potential to evaluate the effectiveness of chemotherapy.