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H. Furumoto
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P1.16 - Surgery (ID 702)
- Event: WCLC 2017
- Type: Poster Session with Presenters Present
- Track: Surgery
- Presentations: 1
- Moderators:
- Coordinates: 10/16/2017, 09:30 - 16:00, Exhibit Hall (Hall B + C)
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P1.16-010 - Development of a Novel Surgical Marking Method Using Low Power Laser Light (ID 8992)
09:30 - 09:30 | Author(s): H. Furumoto
- Abstract
Background:
Small lung nodules which appear to be ground glass opacity in peripheral lung are difficult to identify during surgery. In order to identify the site of such lesions, various types of preoperative or intraoperative marking methods have been reported. However all of them have advantages and disadvantages, so there is no definitive way. Therefore, we developed a new safe and reliable intraoperative marking method using a thin laser fiber. This is a method to confirm a low power laser light from lung surface irradiated from a small diameter laser fiber inserted into or close to the lesion transbronchoscopically using a navigation system. In this study, we conducted an animal experiment to confirm whether the laser light can actually be observed safely from lung surface.
Method:
Bronchoscopy was performed to a hybrid dog under general anesthesia. A plastic laser probe was inserted into a peripheral bronchus from the biopsy channel of the bronchoscope. The plastic laser probe was a very thin (0.8 mm diameter) and flexible cylindrical-type probe. Therefore, it can be inserted into the peripheral lung. It was developed jointly with Keio University. The probe was induced just below the pleura and 50 mW low power laser irradiation was performed. We examined whether laser light could be confirmed from lung surface under thoracotomy. We also examined the difference in appearance from direct-type laser irradiation.
Result:
When the probe was guided to just below the pleura, laser light could be clearly observed from the lung surface. After that, the probe was gradually withdrawn. The laser light could be observed until the depth of 2.0 cm from the pleura. Moreover, laser irradiation was able to be performed safely without any damage around the laser irradiated area. The laser light was observed consistent with laser irradiation site by the cylindrical probe. On the other hands, it was observed on the pleura ahead of laser irradiation by the direct-type probe. Therefore, it is suggested that cylindrical probe might indicate the target area more accuracy.
Conclusion:
It might be possible to confirm the localization of small nodules in peripheral lung using low power laser light during surgery.
