http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
손재범,김광기,Son, Jaebum,Kim, Kwang Gi 대한의용생체공학회 2012 의공학회지 Vol.33 No.3
Biopsy is a type of histopathological examinations, in which a physician samples cells or tissues from a patient's suspicious lesion. Such a lesion frequently resides deep inside human body, and then a percutaneous biopsy is therefore performed using a thick needle with the assistance of medical imaging such as computed tomography(CT) and magnetic resonance imaging(MRI). Recently modern robotic technology is being introduced to percutaneous biopsy in order to reduce any possible human error and hazard on physicians caused by medical imaging. After medical imaging locates the exact location of lesion, an optimization algorithm plans the path for a biopsy needle. Subsequently, a robot system moves the biopsy needle to the lesion in accurate and safe way with the control of a practitioner or automatically. In this article, we try to look into the state-of-art of percutaneous biopsy using such robotic technology. We classified percutaneous biopsy robots by mechanical characteristics and by imaging technology. Then, advantage and disadvantage of each class type are described as well as the basic description, and a few representative designs for each type are introduced. Current research issues of robotized percutaneous biopsy are subjectively selected for the readers' convenience. We emphasize the basic technology of actuator and sensors compatible with imaging technology to conclude this review.
Quantitative Analysis of Applied Force on Biopsy Needle Insertions
Min Tae Kim,Jaebum Son,Chang Nho Cho,김광기,Chang Min Park 대한의용생체공학회 2012 Biomedical Engineering Letters (BMEL) Vol.2 No.4
Purpose The major drawback of conventional computed tomography (CT)-guided biopsy is the exposure of the operator to radiation during the procedure. One of the solutions to this problem is the biopsy utilizing modern robotic technology with the assistance of imaging technology. Methods In the design of a biopsy robot system, the structure and the size of the needle manipulator need to be optimized based on the quantitative analysis of the magnitude and pattern of the axial force applied during a biopsy. In this study, simulated biopsy experiments were conducted using the biopsy robot system previously developed at the National Cancer Center of Korea. The magnitude and the pattern of the axial forces applied to the needle insertion device located at the end of the slave arm were measured while varying the shape, diameter, and insertion angle of the biopsy needle and the specimen for biopsy. Results The results showed that the amount and the pattern of the axial force applied to the biopsy needle are affected by the physical properties of the biopsy specimen as well as the tip shape, diameter, and insertion angle of the needle. These results will facilitate the optimization of the required workspace, size, and weight of robot systems for robotic biopsy. Conclusions A quantitative analysis was performed to examine changes in the shape, diameter, and insertion angle affect the force on the biopsy needle. We found that the force applied on the needle might vary depending on the physical characteristics of the various internal organs and structures.
Performance of 3D printed plastic scintillators for gamma-ray detection
Kim, Dong-geon,Lee, Sangmin,Park, Junesic,Son, Jaebum,Kim, Tae Hoon,Kim, Yong Hyun,Pak, Kihong,Kim, Yong Kyun Korean Nuclear Society 2020 Nuclear Engineering and Technology Vol.52 No.12
Digital light processing three-dimensional (3D) printing technique is a powerful tool to rapidly manufacture plastic scintillators of almost any shape or geometric features. In our previous study, the main properties of light output and transmission were analyzed. However, a more detailed study of the other properties is required to develop 3D printed plastic scintillators with expectable and reproducible properties. The 3D printed plastic scintillator displayed an average decay time constants of 15.6 ns, intrinsic energy resolution of 13.2%, and intrinsic detection efficiency of 6.81% for 477 keV Compton electrons from the <sup>137</sup>Cs γ-ray source. The 3D printed plastic scintillator showed a similar decay time and intrinsic detection efficiency as that of a commercial plastic scintillator BC408. Furthermore, the presented estimates for the properties showed good agreement with the analyzed data.
저 전력 블루투스 기반으로 의료데이터 전송 시 통신 거리와 연동 장치의 수가 데이터 손실률에 미치는 영향
박영상,손병진,손재범,이호열,정유수,송찬호,정의성,Park, Young-Sang,Son, ByeongJin,Son, Jaebum,Lee, Hoyul,Jeong, Yoosoo,Song, Chanho,Jung, Euisung 대한의용생체공학회 2021 의공학회지 Vol.42 No.6
Recently, the market for personal health care and medical devices based on Bluetooth Low Energy(BLE) has grown rapidly. BLE is being used in various medical data communication devices based on low power consumption and universal compatibility. However, since data errors occurring in the transmission of medical data can lead to medical accidents, it is necessary to analyze the causes of errors and study methods to reduce data error. In this paper, the minimum communication speed to be used in medical devices was set to at least 800 byte/sec based on the wireless electrocardiography regulations of the Ministry of Food and Drug Safety. And the data loss rate was tested when data was transmitted at a speed higher than 800 byte/sec. The factors that cause communication data error were classified, and the relationship between each factor and the data error rate was analyzed through experiments. When there were two or more activated peripherals connected to the central, data error occurred due to channel hopping and bottleneck, and the data error rate increased in proportion to the communication distance and the number of activated peripherals. Through this experiment, when the BLE is used in a medical device that intermittently transmits biosignal data, the risk of a medical accident is predicted to be low if the number of peripherals is 3 or less. But, it was determined that BLE would not be suitable for the development of a biosignal measuring device that must be continuously transmitted in real time, such as an electrocardiogram.