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Home > ÇÐȸȰµ¿ > ±¹Á¦ÇмúÁö |
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ÀÛ¼ºÀÏ : 16-06-09 16:03
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Min-Seok Cho et al |
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A noble technique a using force-sensing resistor for immobilization-device quality assurance: A feasibility study |
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Journal of the Korean Physical Society |
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68, 6 |
ÆäÀÌÁö |
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803-809 |
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2016-4-12 |
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http://link.springer.com/article/10.3938%2Fjkps.68.803 [2320] |
Abstract |
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Many studies have reported that a patient can move even when an immobilization device is used. Researchers have developed an immobilization-device quality-assurance (QA) system that evaluates the validity of immobilization devices. The QA system consists of force-sensing-resistor (FSR) sensor units, an electric circuit, a signal conditioning device, and a control personal computer (PC) with in-house software. The QA system is designed to measure the force between an immobilization device and a patient¡¯s skin by using the FSR sensor unit. This preliminary study aimed to evaluate the feasibility of using the QA system in radiation-exposure situations. When the FSR sensor unit was irradiated with a computed tomography (CT) beam and a treatment beam from a linear accelerator (LINAC), the stability of the output signal, the image artifact on the CT image, and changing the variation on the patient¡¯s dose were tested. The results of this study demonstrate that this system is promising in that it performed within the error range (signal variation on CT beam < 0.30 kPa, root-mean-square error (RMSE) of the two CT images according to presence or absence of the FSR sensor unit < 15 HU, signal variation on the treatment beam < 0.15 kPa, and dose difference between the presence and the absence of the FSR sensor unit < 0.02%). Based on the obtained results, we will volunteer tests to investigate the clinical feasibility of the QA system |
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