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백승면,김태호,강형근,전성채,진승오,허영,하판봉,박무훈,김영희,Baek, Seung-Myun,Kim, Tae-Ho,Kang, Hyung-Geun,Jeon, Sung-Chae,Jin, Seung-Oh,Huh, Young,Ha, Pan-Bong,Park, Mu-Hun,Kim, Young-Hee 한국정보통신학회 2007 한국정보통신학회논문지 Vol.11 No.2
본 논문에서는 디지털 의료 영상 및 진단 분야 그리고 산업용으로도 활용 가능한 싱글 포톤 계수형 영상센서를 $0.18{\mu}m$ triple-well CMOS(Complementary Metal Oxide Semiconductor) 공정을 사용하여 설계하였다. 설계된 Readout 칩용 싱글 픽셀은 디지털 X-ray 이미지 센서모듈을 간단화 하기 위해 단일 전원전압을 사용하였으며, Preamplifier의 출력 전압인 signal voltage(${\Delta}Vs$)를 크게 하기 위해 Folded Cascode CMOS OP amp를 이용한 Preamplifier를 설계하였으며, 기존의 Readout 칩 외부에서 인가하던 threshold voltage를 Readout 칩 내부에서 생성해 줄 수 있도록 Externally Tunable Threshold Voltage Generator 회로를 새롭게 제안하였다. 그리고, Photo Diode에서 발생하는 Dark Current Noise를 제거하기 위한 Dark Current Compensation 회로를 제안하였으며, 고속 counting이 가능하고, layout 면적이 작은 15bit LFSR(Linear Feedback Shift Resister) Counter를 설계하였다. A single pixel photon counting type image sensor which is applicable for medical diagnosis with digitally obtained image and industrial purpose has been designed with $0.18{\mu}m$ triple-well CMOS process. The designed single pixel for readout chip is able to be operated by single supply voltage to simplify digital X-ray image sensor module and a preamplifier which is consist of folded cascode CMOS operational amplifier has been designed to enlarge signal voltage(${\Delta}Vs$), the output voltage of preamplifier. And an externally tunable threshold voltage generator circuit which generates threshold voltage in the readout chip has been newly proposed against the conventional external threshold voltage supply. In addition, A dark current compensation circuit for reducing dark current noise from photo diode is proposed and 15bit LFSR(Linear Feedback Shift Resister) Counter which is able to have high counting frequency and small layout area is designed.
The Effects of High Intensity Laser Therapy on Pain and Function of Patients with Frozen Shoulder
Jeon, Chun-Bae,Choi, Seok-Joo,Oh, Hyun-Ju,Jeong, Mu-Geun,Lee, Kwan-Sub 대한물리치료학회 2017 대한물리치료학회지 Vol.29 No.4
Purpose: This study was to identify the effectiveness of high-intensity laser therapy on pain and function of a frozen shoulder. Methods: Thirty patients were assigned to two groups: the experimental group (n=15) and the control group (n=15). Both groups received traditional therapy for 4 weeks, 3 days a week. The experimental group, however, received an additional high intensity laser therapy. Pain was measured using the visual analogue scale (VAS). The functional ability was measured using the patient specific functional scale (PSFS). A paired t-test was used to determine any differences before and after the treatment, and an independent t-test was used to determine any differences between treatment groups. Results: Both groups showed a statistically significant difference for VAS and PSFS score (p<0.05). In comparison between two groups, more experimental group than control group statistically significant difference (p<0.05). Conclusion: There seems to be a positive effect on pain and function of frozen shoulder from using high intensity laser therapy.
The Effects of High Intensity Laser Therapy on Pain and Function of Patients with Frozen Shoulder
( Chun-bae Jeon ),( Seok-joo Choi ),( Hyun-ju Oh ),( Mu-geun Jeong ),( Kwan-sub Lee ) 대한물리치료학회 2017 대한물리치료학회지 Vol.29 No.4
Purpose: This study was to identify the effectiveness of high-intensity laser therapy on pain and function of a frozen shoulder. Methods: Thirty patients were assigned to two groups: the experimental group (n=15) and the control group (n=15). Both groups received traditional therapy for 4 weeks, 3 days a week. The experimental group, however, received an additional high intensity laser therapy. Pain was measured using the visual analogue scale (VAS). The functional ability was measured using the patient specific functional scale (PSFS). A paired t-test was used to determine any differences before and after the treatment, and an independent t-test was used to determine any differences between treatment groups. Results: Both groups showed a statistically significant difference for VAS and PSFS score (p<0.05). In comparison between two groups, more experimental group than control group statistically significant difference (p<0.05). Conclusion: There seems to be a positive effect on pain and function of frozen shoulder from using high intensity laser therapy.