• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2019.06a
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• pp.285-287
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• 2019

MPEG - IoMT(Internet of Media Things) 는 사물 인터넷 및 웨어러블 환경에서의 효율적인 미디어 서비스 제공을 위한 데이터 포맷 및 API(Application Programming Interface) 표준을 제공하고 있다. 본 논문에서는 MPEG - IoMT 에 채택된 헬스케어(healthcare) 정보 서술 툴에 대한 IoMT 참조 SW 에서의 검증 실험내용을 기술한다. IoMT 는 의료영상 저장/관리 및 통신을 위한 표준인 DICOM (Digital Imaging a nd Communication in Medical)을 기반으로 의료 미디어 정보를 기술하기 위한 Healthcare Information 스키마(schema)와 이를 기반으로 서술된 정보를 IoT 및 웨어러블 환경에서 활용하기 위한 API 표준을 포함하고 있다. 본 논문에서는 IoMT 참조 SW 를 이용하여 헬스케어 스키마에 따른 헬스케어 정보의 생성 및 파싱(parsing) 을 검증하고, 서술정보를 MThing (Media Thing) 들 간의 교환을 위한 API 에 대한 검증 내용을 보인다.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.04a
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• pp.932-933
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• 2009

최근 의료기기의 디지털화와 더불어 IT 기술의 융복합화에 따라 다양한 의료기기들이 등장하고 있다. 특히 의료분야에서 발생하는 파형을 디지털화 시킴으로써 컴퓨터 등과 같은 기기를 통하여 정확한 분석이 가능하며 장기적으로 보관이 가능하다. 또한 디지털 파형의 포맷 규격을 정형화 함으로써 HL7 이나 DICOM 과 같이 상호 호환성, 정보교환이 가능하다. 특히 ECG, EEG 등과 같은 파형들은 개개인의 건강정보를 분석하기 위해 필수적인 요소이다. 본 논문에서는 ISO/TS 11073-92001 규격으로 제정된 MFER (Medical waveform description Format Encoding Rules)를 기반으로 바이오 레이더 신호를 저장할 수 있는 모듈에 관하여 기술한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2022.11a
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• pp.318-321
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• 2022

최근 의료데이터 표준화에 대한 중요성이 보건의료 빅데이터 구축과 맞물려 보건의료데이터 표준화와 마이데이터 생태계 조성을 추진하고 있다. 그리고 개인들의 휴대용 기기 이용증가와 모바일 환경으로 전반적인 디지털헬스의 패러다임 변화에 따라 HL7 FHIR의 사용이 점차 확대될 것으로 예측된다. 본 논문에서는 의료정보 표준인 HL7 FHIR와 의료영상 표준인 DICOM으로 환자 정보를 전달하기 위한 다중 의료 정보 중재 플랫폼에 대해서 기술한다. 이를 구현하기 위해 HL7 FHIR의 Patient, Observation, DiagnosticReport, Bundle 리소스를 활용하여 환자 정보와 임상 리포트 정보를 전달하여 StudyList에서 보여줄 수 있도록 구현하였다. 현재 구현된 내용은 FHIR 기반의 임상데이터로 의료영상을 포함한 표준화된 정보로 제공하여 마이데이터 실증 플랫폼으로 활용될 것으로 기대된다.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.1095-1098
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• 2008

최근 디지털 의료영상 자료들이 급격히 증가하고 의학과 임상에서 많은 병원과 기관 사이의 협업연구가 증가함에 따라 지리적으로 분산된 외부 기관과의 원격 데이터 공유 및 원격의 데이터 접근이 필요하게 되었다. 의료 장비 사이의 데이터 교환을 위한 DICOM은 외부 기관의 방화벽으로부터 의료 이미지 데이터 접근을 지원하는 보안 방법과 전송 속도 문제로 인해 협업 환경에 적합하지 않으며, 의료 이미지 데이터 관리 기능을 제공하지 못한다. 본 논문에서는 그리드 기반의 협업 환경을 제안하고 웹 서비스를 이용한 그리드 데이터 관리 기능을 구현하여 의료 분야의 PACS 통합과 의료 이미지 데이터 교환 문제를 해결하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.05a
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• pp.745-748
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• 2007

본 논문은 현재 대형 병원에서 널리 사용되고 있는 PACS의 데이터 백업, 데이터의 관리 등의 문제점을 해결하고자 지리적으로 분산된 PACS를 그리드 기술로 통합 연동하여 PACS의 효용성을 높이고 원격 이미지 파일 전송 및 협업, 원격진단과 같은 향상된 의료 정보기능을 제공하기 위하여 PACS-Grid DICOM Server, PACS-Grid 브라우저, PACS-Grid Provider를 정의하여 PACS-Grid 서비스 시스템을 설계하고 구현하였다.

• Journal of Internet Computing and Services
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• v.16 no.2
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• pp.109-115
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• 2015

The new medical device technologies for bio-signal information and medical information which developed in various forms have been increasing. Information gathering techniques and the increasing of the bio-signal information device are being used as the main information of the medical service in everyday life. Hence, there is increasing in utilization of the various bio-signals, but it has a problem that does not account for security reasons. Furthermore, the medical image information and bio-signal of the patient in medical field is generated by the individual device, that make the situation cannot be managed and integrated. In order to solve that problem, in this paper we integrated the QR code signal associated with the medial image information including the finding of the doctor and the bio-signal information. bio-signal. System implementation environment for medical imaging devices and bio-signal acquisition was configured through bio-signal measurement, smart device and PC. For the ROI extraction of bio-signal and the receiving of image information that transfer from the medical equipment or bio-signal measurement, .NET Framework was used to operate the QR server module on Window Server 2008 operating system. The main function of the QR server module is to parse the DICOM file generated from the medical imaging device and extract the identified ROI information to store and manage in the database. Additionally, EMR, patient health information such as OCS, extracted ROI information needed for basic information and emergency situation is managed by QR code. QR code and ROI management and the bio-signal information file also store and manage depending on the size of receiving the bio-singnal information case with a PID (patient identification) to be used by the bio-signal device. If the receiving of information is not less than the maximum size to be converted into a QR code, the QR code and the URL information can access the bio-signal information through the server. Likewise, .Net Framework is installed to provide the information in the form of the QR code, so the client can check and find the relevant information through PC and android-based smart device. Finally, the existing medical imaging information, bio-signal information and the health information of the patient are integrated over the result of executing the application service in order to provide a medical information service which is suitable in medical field.

• Journal of the Korean Society of Radiology
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• v.11 no.5
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• pp.371-377
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• 2017

General phantom for practical X-ray photography Practical phantom is an indispensable textbook for radiology, but it is difficult for existing commercially available phantom to be equipped with various kinds of phantom because it is an expensive import. Using 3D printing technology, I would like to make the general phantom for practical X-ray photography less expensive and easier. We would like to use a skeleton model that was produced based on CT image data using a 3D printer of FDM (Fused Deposition Modeling) method as a phantom for general X-ray imaging. 3D slicer 4.7.0 program is used to convert CT DICOM image data into STL file, convert it to G-code conversion process, output it to 3D printer, and create skeleton model. The phantom of the completed phantom was photographed by X - ray and CT, and compared with actual medical images and phantoms on the market, there was a detailed difference between actual medical images and bone density, but it could be utilized as a practical phantom. 3D phonemes that can be used for general X-ray practice can be manufactured at low cost by utilizing 3D printers which are low cost and distributed and free 3D slicer program for research. According to the future diversification and research of 3D printing technology, it will be possible to apply to various fields such as health education and medical service.

• Journal of Dental Rehabilitation and Applied Science
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• v.33 no.4
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• pp.278-283
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• 2017

Purpose: The aim of this study was to evaluate the interdental distances of anterior, premolar, and molar teeth at the cementoenamel junction (CEJ) and 2 mm below the CEJ in healthy natural dentition with cone-beam computerized tomography (cone-beam CT) in order to provide valuable data for ideal implant positioning relative to mesiodistal bone dimensions. Materials and Methods: Two hundred patients who visited Dental Hospital, Wonkwang University, who had natural dentition with healthy interdental papillae, and who underwent cone-beam CT were selected. The cone-beam CT images were converted to digital imaging and communication in medicine (DICOM) files and reconstructed in three-dimensional images. To standardize the cone-beam CT images, head reorientation was performed. All of the measurements were determined on the reconstructed panoramic images by three professionally trained dentists. Results: At the CEJ, the mean maxillary interdental distances were 1.84 mm (anterior teeth), 2.07 mm (premolar), and 2.08 mm (molar), and the mean mandibular interproximal distances were 1.55 mm (anterior teeth), 2.20 mm (premolar), and 2.36 mm (molar). At 2mm below the CEJ, the mean maxillary interdental distances were 2.19 mm (anterior teeth), 2.51 mm (premolar), and 2.60 mm (molar), and the mean mandibular interproximal distances were 1.86 mm (anterior teeth), 2.53 mm (premolar), and 3.01 mm (molar). Conclusion: The interdental distances in the natural dentition were larger at the posterior teeth than at the anterior teeth and also at 2 mm below the CEJ level compared with at the CEJ level. The distances between mandibular incisors were the narrowest and the distances between mandibular molars were the widest in the entire dentition.

• Journal of the Korean Society of Radiology
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• v.12 no.4
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• pp.443-450
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• 2018

The Geant 4 simulated the linear accelerator (VARIAN CLINAC) based on the previously implemented BEAMnrC data, using the head structure of the linear accelerator. In the 10 MV photon flux, Geant4 was compared with the measured value of the percentage of the deep dose and the lateral dose of the water phantom. In order to apply the dose calculation to the body part, the actual patient's lung area was scanned at 5 mm intervals. Geant4 dose distributions were obtained by irradiating 10 MV photons at the irradiation field ($5{\times}5cm^2$) and SAD 100 cm of the water phantom. This result is difficult to measure the dose absorbed in the actual lung of the patient so the doses by the treatment planning system were compared. The deep dose curve measured by water phantom and the deep dose curve calculated by Geant4 were well within ${\pm}3%$ of most depths except the build-up area. However, at the 5 cm and 20 cm sites, 2.95% and 2.87% were somewhat higher in the calculation of the dose using Geant4. These two points were confirmed by the geometry file of Genat4, and it was found that the dose was increased because thoracic spine and sternum were located. In cone beam CT, the dose distribution error of the lungs was similar within 3%. Therefore, if the contour map of the dose can be directly expressed in the DICOM file when calculating the dose using Geant4, the clinical application of Geant4 will be used variously.

• The Journal of Korean Society for Radiation Therapy
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• v.18 no.2
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• pp.67-73
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• 2006

Purpose: The number of patients receiving radiotherapy has increased every year and will keep increasing in the future. Therefore, the technique of radiotherapy is developing from day to day, as a result of it, the quantities of image and data used for radiotherapy are also considerably increasing. Therefore, there have been many difficulties in storing, keeping and managing them. Then, we developed and applied this system for improving complicated work process as well as solving these problems with the collaboration Medical Information Team. Materials and Methods: We exported its image at R & V (Record and Verify: Varis vision, Varian, USA) system and planning system after giving some code to be able to access from management system(RO) for department of radiation oncology to PACS. And, we programmed their information by using necessary information among many information included in DICOM head. Results: All images and data generated by our working environment (Simulation CT, L-gram image and internal body structure, DRR, does distribution )were realized at PACS and it became to be possible for clear image to be printed from any computer in department of radiation oncology. Conclusion: It was inevitable to use film during radiotherapy for patients in the past, however, due to the development of this system, film-less system became to be possible. Therefore, the darkroom space and its management cost in relation to the development process disappeared and it became to be unnecessary for spending tangible and intangible financial expense including human resources, time needed for finding film storing space and film and purchasing separate storing equipment for storing images. Finally, we think this system would be very helpful to handle ail complicated processes for radiotherapy and increasing efficiency of overall working conditions.