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Three-dimensional Navigation for Thoracoscopic Sublobar Resection Using a Novel Wireless Marking System.

Yojiro Yutaka¹, Toshihiko Sato², Koichi Matsushita³

¹Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan; Department of Bioartificial Organs, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan.

Seminars in Thoracic and Cardiovascular Surgery

|March 14, 2018

Summary

This summary is machine-generated.

Radiofrequency identification (RFID) markers precisely locate small lung lesions for surgical removal. This novel wireless system offers accurate 3D positioning, improving surgical margins and potentially replacing traditional methods.

Keywords:

electromagnetic navigation bronchoscopy localization navigation surgery radiofrequency identification small lung lesions video-assisted thoracoscopic surgery

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Area of Science:

Medical Devices
Surgical Technology
Pulmonary Medicine

Background:

Locating small intrapulmonary lesions for resection is challenging.
Current localization methods may have limitations in accuracy and invasiveness.

Purpose of the Study:

To develop and evaluate a novel radiofrequency identification (RFID) based localization technique for small intrapulmonary lesions.
To assess the feasibility and three-dimensional positional accuracy of micro-RFID markers in a preclinical model.

Main Methods:

Micro-RFID markers with nickel-titanium coils were designed for placement in peripheral lung parenchyma via subsegmental bronchi.
A preclinical study in canines utilized thoracoscopic subsegmentectomy on a pseudotumor model.
Markers were placed to define resection margins, and located wirelessly using a wand probe with auditory feedback.

Main Results:

Thirty-four RFID markers were placed for 10 pseudotumors in 10 canines.
Markers were accurately detected wirelessly, with central markers found in small bronchi within seconds.
Surgical resection stumps were consistently within 5.4 mm of markers, ensuring adequate margins around the pseudotumors.

Conclusions:

RFID wireless markers provide precise three-dimensional positional information for intrapulmonary lesions.
This technology is a potential viable alternative to conventional localization markers.
The system demonstrates feasibility for guiding surgical resection of small lung nodules.