Imaging technique of near-infrared laser distribution on tissue by CCD-based video camera

Kazuichi Katoh; Akinori Nagasawa

doi:10.1117/12.146988

30 June 1993 Imaging technique of near-infrared laser distribution on tissue by CCD-based video camera

Kazuichi Katoh, Akinori Nagasawa

Proceedings Volume 1897, Medical Imaging 1993: Image Capture, Formatting, and Display; (1993) https://doi.org/10.1117/12.146988
Event: Medical Imaging 1993, 1993, Newport Beach, CA, United States

Abstract

To obtain successful results in the therapeutic application of lasers, understanding laser beam distribution in lased tissue is essential. However there are few practical available techniques to observe the distribution of near-infrared lasers. Charge-coupled device (CCD) image sensors have an excellent sensitivity to near-infrared ranges, and so the authors have studied an imaging technique for near-infrared laser beam distribution in tissues using a video camera with a CCD image sensor. As the result of this experiment, it has been confirmed that the near-infrared laser beam distribution in tissues was easily captured as a visible pattern by a CCD camera on a CRT frame. Since the CCD camera can visualize the near-infrared laser beam distribution in tissues directly on the image of a subject, every part of the near-infrared laser beam distribution can be exactly corresponded to the subject. And so this technique is very useful for the clinical application of near-infrared lasers. The greatest advantage of this technique is the applicability to monitor the laser distribution in the tissue during an operation with near-infrared lasers. The results of this experiment suggested the possibility to lead to 'laser-intensitography', which was also experimented.

Citation Download Citation

Kazuichi Katoh and Akinori Nagasawa "Imaging technique of near-infrared laser distribution on tissue by CCD-based video camera", Proc. SPIE 1897, Medical Imaging 1993: Image Capture, Formatting, and Display, (30 June 1993); https://doi.org/10.1117/12.146988

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