MASAMUNE Ken    Department   Research Institutes and Facilities, Research Institutes and Facilities    Position   Professor
Language	English
Title	Measurement of magnetic field from radio-frequency identification antenna for use in operation room
Conference	2017 IEEE Conference on Antenna Measurements & Applications (CAMA)
Conference Type	Nationwide Conferences
Publisher and common publisher	◎KUSUDA Kaori, MASAMUNE Ken, MURAGAKI Yoshihiro, AMEYA Michitaka , KUROKAWA Satoru, YAMASHITA Kazuhiko, OHTA Yuji
Date	2017/12/04
Venue (city and name of the country)	Tsukuba, Japan
Society abstract	2017 IEEE Conference on Antenna Measurements & Applications (CAMA) 414-415
Summary	Retaining of surgical instruments in the patient's bodies has occasionally happened. To prevent it, surgical instruments with radio-frequency identification tags and new antenna for use in an operation room (ORAnt) were developed. With the use of such surgical instruments can be identified automatically during surgery. The system should precisely recognize the surgical instruments and not to interfere with work of intraoperative medical equipment. The purpose of this study was measurement of the magnetic field distribution of ORAnt. It revealed that with increase of the distance in z-axis direction, the magnetic field strength attenuated to the -4th powers of the distance.