RESEARCH

RESEARCH OVERVIEW


Our research topics are based on medical imaging. To enhance the image quality for 2D radiography, CT, PET and SPECT, we are studying diverse research fields.

COMPLETED PROJECTS


Reconstruction of Dose Distribution in In-beam PET for Carbon Theraphy

In this study, we aim to compensate the artifacts which come from two kinds of gap in in-beam PET system : gaps for hardrons and gaps between the modules.

Image Registration for Breast Cancer Study

We have been developing 3D free-form deformable registration algorithm for breast PET-CT and MR images to make the PET/MR fusion images.

High Energy Collimator Design for I-131

In this study, we designed the multi-pinhole collimator for I-131 source and physically simulated the pinhole structure. And we implemented MLEM algorithm to get reconstruction image for tomographic result

Plasma-Display-Panel based X-ray Detector (PXD)

Plasma display panel (PDP) has a similar structure to conventional gas type radiation detectors and can be manufactured with lower cost than TFT-based detector panels.

Optical Lens Coupled CCD based Gamma-ray Detector

We developed an optical lens coupled CCD-based gamma camera for preclinical system with pinhole collimator, and CsI(Tl) columnar scintillator.

Abdomen Registration for PET/CT and MR images

To develop an image registration algorithm for abdominal PET/CT and standalone MR images, we developed a 3D elastic image registration algorithm which consists of NMI based global matching and ICA-based refinement.

Performance Optimization by Patient Dose Analysis and Image Quality Assessment in Next Generation Digital Fluoroscopy (CTF)

We investigated radiation doses to patients and operators by simulating an orthopedic surgery using CT fluoroscopy systems in their 2-D fluoroscopy modes.

Cone-beam based system matrix for a pixelated SPECT detector

In this study, we designed a high sensitive collimator, i.e., registered collimator. Its opening was designed to align with the pixel by having same pitch and shape.

Development of Time-of-Flight Method for Improvement of Signal-to-Noise Ratio

The proposed TOF reconstruction image show higher contast than back-projection method which apply time spead fuction(TSF), and acceleration method show faster and stable than conventional method.

HPC Cluster Design for Monte-Carlo Simulation

To develop a small laboratory level HPC system, we designed a compact, scalable and cost-effective cluster.

RESEARCH GRANTS


  • Devolopment of a novel 3D photon counting baggage scanning system for explosive detection, 2016.11.01 - 2019.10.31 (3 years), 150M won
    광자계수형 3차원 수하물 검색대 설계 및 폭발물 검출 알고리듬 개발, 과제책임자(이학재), 한국연구재단, 이공분야기초연구사업(대), 학문후속세대양성(중), 리서치펠로우(소)
  • 고에너지분해능 감마영상처리회로 개발, 2017.01.01 - 2017.12.31 (1 year), 50M won, 위탁과제책임자, 원자력의학원주관.
  • Development of organ specific SPECT system using variable-standard multi-pinhole collimator to acquire low dose and small cancer image, 2016.06.06 - 2019.05.31 (3 years), 500M won
    저선량 미소병변 영상획득을 위한 자동 규격변경 멀티핀홀 이용 질병특화촬영 SPECT 개발, 과제책임자, 한국연구재단, 이공분야기초연구사업(대), 중견연구자지원사업(중), 중견연구(소)
  • Development of portable 3D radiation imaging system using CZT detector, 2016.05.01 - 2019.04.30 (3 years), 300M won
    CZT 검출기를 이용한 휴대용 방사선 3차원 영상화 장비 개발, 과제책임자, 에너지기술평가원(대), 에너지기술개발사업(중), 산업기술혁신사업(소)
  • 초소형 감마카메라 개발, 2016.05.01 - 2017.04.30 (1 year), 8.7M won, 과제책임자, 산학연협력 기술개발사업(대), 중소기업청과제(중), 첫걸음과제(소)
  • A high precision wide area radiation monitoring system, 2015.06.01 - 2016.05.31 (1 year), 50M won
    광역 감시용 고해상도 방사선 모니터링 시스템 개발, 과제책임자, 한국연구재단, 원자력연구개발사업(대), 원자력연구기반확충사업(중), 전략기초(소)
  • 핵의학진단영상기기를 위한 범용 감마선 검출기 모듈 개발, 2015.07.29 - 2016.05.28 (10 months), 49M won, 과제책임자, 중소기업청, 중소기업기술개발지원사업(대), 창업성장기술개발사업(중), 이공계창업꿈나무과제(소)
  • 전임상용 quad-head PET을 위한 고해상도 영상재구성 알고리듬 구현, 2015.01.01 - 2015.12.31 (1 year), 25M won, 위탁과제책임자, 원자력의학원주관, 방사성의약품이용기술개발
  • High resolution and multi-purpose SPECT using variable pinhole collimator, 2014.12.11 - 2015.12.10 (1 year), 170M won
    가변형 핀홀 콜리메이터와 이를 이용한 다기능 고해상도 단일광자방출촬영장치, 연구책임자, 미래창조과학부, 기초연구성과활용지원사업(대), 교육인력양성사업(중), 연구성과사업화지원사업(소)
  • I-131용 다중바늘구멍 조준기 부착 감마카메라용 영상재구성법 개발, 위탁과제책임자, 원자력연구개발사업, 한국연구재단, 2012.03.01 - 2014.02.28 (1 year) 
  • 중입자 치료장치를 위한 In-Beam PET의 선량분포 영상화 및 성능평가, 과제책임자, 원자력장학생사업, 한국연구재단, 2011.07.05 - 2012.07.04 (1 year)
  • 국부대칭성 특징 추출을 위한 필터링 알고리즘 연구 및 성능평가, 참여연구원, ETRI 위탁, 2011.06.20 - 2011.11.19 (5 months)
  • Development of a gamma imaging detector for the radiographic nondestructive testing, 2011.06.01 - 2012.12.31 (19 months), 210M won
    방사선 투과 비파괴검사를 위한 디지털 감마영상 검출 모듈 개발, 과제 책임자, 한국산업기술진흥협회, 산학연 협력체제 활성화 지원사업(대), 산학연협력 우수연구실사업(중), 핵심애로기술개발(소)
  • Development of image reconstruction algorithm for a small animal PET system, 2011.06.01 - 2013.05.31 (2 years), 소동물용 핵의학 장비를 위한 영상재구성 알고리듬 개발, 과제책임자, 중소기업기술혁신개발사업 미래선도과제 위탁, (주)뉴캐어메디컬시스템
  • Development of Throughput Enhancement Techniques for Photon-counting-Based Functional Imaging Systems, 2010.05.01 - 2016.03.31 (6 years), 335M won
    고민감도의 획득과 영상품질의 향상을 위한 광자계수기반 고효율 기능영상시스템의 기반기술 개발, 세부과제책임자, 한국연구재단, 원자력연구개발사업(대), 원자력연구기반확충사업(중), 기초공동연구소(소)
  • Development of Throughput Enhancement Techniques for Photon-counting-Based Functional Imaging Systems, 2011.04.01 - 2011.05.31 (1 month), BMD 장비의 Calibration 파라미터 최적화를 위한 시뮬레이션 연구, 과제책임자, 기업용역, (주)오스테오시스
  • A study of image registration algorithm for the longitudinal study of cancer, 2010.03.01 - 2012.02.28 (2 years), 60Mwon
    고형암 종적연구를 위한 PET-MRI영상융합기술개발, 위탁과제책임자, 원자력의학원 주관, 한국연구재단, 원자력연구개발사업(대), 방사선기술개발사업 (중), 방사선의학기술 (소)
  • A study on plasma sensor and detection method for the direct-conversion x-ray imaging detector, 2009.09 01 - 2012.08.31 (3 years), 309.75M won.
    직접방식의 엑스선 영상용 검출기를 위한 플라즈마 센서와 검출방법에 대한 연구, 과제 책임자, 한국연구재단, 기초연구사업(대), 일반연구자지원사업(중), 기본연구지원(협동연구)(소).
  • Development of Time-of-Flight Method for Improvement of Signal-to-Noise Ratio, 2009.07.01 - 2011.06.30 (2 years), 90M won.
    신호대잡음비를 향상시키기 위한 Time-of-Flight(TOF) 적용 방법 개발, 위탁과제책임자, 삼성서울병원주관, 한국연구재단, 원천기술개발사업(대), 미래기반기술개발사업(중), 실시간응답형 고해상도 의료영상기기 기술개발(소).
  • Performance Optimization By Patient Dose Analysis and Image Quality Assessment in Next Generation Digital Fluoroscopy, 2008.12.23 - 2012.02.28 (3 years 2 months), 90M won
    차세대 3D CT fluoroscopy에서의 흡수선량 분석 및 영상품질 성능지표의 최적화 연구, 위탁과제 책임자, 한국전기연구원주관, 지식경제부, 협동연구사업
  • Development of image registration techniques for multi-modality analysis, 2007.03.01 - 2010.02.28 (3 years)
    다중영상분석을 위한 영상정합기술 개발, 75M won, 원자력의학원주관, 과학재단 원자력연구개발사업(대), 방사선기술개발사업(중), 방사선의학기술개발(소)
  • Development of new collimation scheme for a next generation solid-state gamma ray detector in nuclear, 2008.07.01 - 2009.06.30 (1 year), 22M won
    반도체 기반 픽셀방식의 차세대 감마선 검출기를 위한 신개념의 콜리메이션 방법, 연구책임자, 학술진흥재단, 신진교수연구지원사업, 기초과학분야
  • Development of a collimator for detectors in nuclear medicine, 2007.06.15 - 2008.06.14 (1 year), 39.6M won, funded by Siemens Medical Solutions, USA 기업용역과제