20. Method for quantifying radioactivity using Compton camera (Patent Number 10-2066353), 2020

19. System and method of Compton computed tomography (Patent Number 10-2056001), 2019

18. System and method for three-dimensional dose distribution verification (Patent Number 10-2056001), 2019

17. Dose calculation method, dose calculation device, and computer readable storage medium (Patent Number EP 3 124 076 B1, EU), 2019

16. Dose calculation method, dose calculation device, and computer readable storage medium (Patent Number US 10,016,622 B2 , U.S.A), 2018

15. Estimation method of radioactivity (Patent Number 10-1874235, Korea), 2018

14. Apparatus and method for detecting gamma-ray (Patent Number 10-1799655, Korea), 2017

13. Defect verification system and method of spent nuclear fuel assembly using gamma- ray imaging device (Patent Number 10-1589258, Korea), 2016

12. Dose calculation method and apparatus (Patent Number 10-1638990, Korea), 2016

11. Gamma ray detecting apparatus and method for detecting gamma ray using the same (Patent Number US 8,993,975,B2, U.S.A), 2015

10. Method and apparatus for calculating radiation dose based on tetrahedron phantom (Patent Number 10-1459241, Korea), 2014

9. Gamma-ray detection apparatus and gamma-ray detection method using the same (Patient Number 10-1206005, Korea), 2012

8. Multi-layer collimated industrial process gamma tomography system (Patient Number 110-1128230-0000, Korea), 2012

7. Apparatus for charged particle beam computed tomography using toroidal coils and method of the same (Patient Number 10-1127680-0000, PCT/KR2010/001172, PCT), 2012

6. PRDC (Personnel Radiation Dose Calculation) (Program Registration Number. 2011-01-123-000115), 2011

5. CIS (Compton Imaging Simulator) (Program Registration Number 2010-01-121-006589), 2010

4. A device for medical imaging (Patient Number 10-0958791, Korea), 2010

3. Prompt gamma scanning system and a discrimination level determination method for detecting prompt gammas using the same (Patient Number 10-0935801, Korea), 2009

2. Apparatus for improvement in the image resolution of a Compton camera and its principle (Patient Number 10-0859740, Korea), 2008

1. Prompt gamma scanning system and prompt gamma scanning method using the same (Patent Number 10-0783506, Korea), 2007