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  • Title: Thoracoscopic surgery support system using passive RFID marker.
    Author: Takahata H, Kojima F, Okada M, Sugiura T, Sato T, Oshiro O.
    Journal: Annu Int Conf IEEE Eng Med Biol Soc; 2012; 2012():183-6. PubMed ID: 23365862.
    Abstract:
    This paper proposes a RFID based thoracoscopic surgery support system, which is capable of marking a tumor inside organ tissue. The marker composed of small RFID-tags is implanted in the vicinity of tumor found in the endoscopy test. In the thoracoscopic surgery operation for removing the tumor, an RFID detector determines the accurate position of the implanted RFID-tag markers by measuring the strength of the signal emitted from the target tag. Due to limitation in the size of RFID-tag, the proposed system employs a passive RFID. To activate the passive tag implanted in the organ tissue, this paper designs a saddle-shape efficient power supply antenna. A sensitive and frequency-selective receiver is then designed for detecting the weak signal from the tag. The feasibility test confirms that the proposed method is capable of determining the accurate location of RFID tags implanted in the patient's organ tissue.
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