Snu Rdb Foundation

Samsung Life Public Welfare Foundation

Eulji University Industry Academy Cooperation Foundation

Korea Institute of Radiological & Medical Science

Seong Jong Hong

Jae Sung Lee

Mikiko Ito

Ho Young Lee

Dong Soo Lee

Jong Hun Lee

Seung Hoon Lee

Hyung Lee

Kyeong Min Kim

Sun Il Kwon

Hyun Suk Yoon

Han Gyu Kang

Gun Chul Hong

Sang Keun Park

Chan Mi Lee

The present invention provides a triple fusion imaging device for sentinel lymphadenectomy for laparoscopic surgery including: a composite laparoscope for near infrared ray/gamma ray/visible ray acquisition configured to acquire triple images of a gamma ray from a gamma ray radioactive material injected to a diseased part, a visible ray, and a near infrared ray; an optical fiber configured to transmit the triple images acquired from the composite laparoscope; an optical source configured to generate a white light for acquiring a visible image through the optical fiber and a near infrared ray excitation light for acquiring a near infrared ray image by exciting a near infrared ray emitting fluorescence material at the disease part; an optical-to-electrical conversion module configured to separate individual images of the visible ray, near infrared ray and gamma ray from the triple images delivered through the optical fiber and then respectively convert the individual images to electrical signals; a matching unit configured to match a visible image signal, a near infrared image signal and a gamma ray image signal from the optical-to-electrical conversion module to one image; and an image display unit configured to display the image from the matching unit.

Triple-fusion imaging device for sentinel lymphadenectomy during laparoscopic surgery

The present invention provides an apparatus for measuring a Depth-Of-Interaction (DOI), comprising a crystal layerof a mono layer in which a plurality of crystals for absorbing gamma rays are consecutively arranged, scintillation light detectors disposed at one end of the crystals and configured to detect scintillation light emitted from the crystal layerby the gamma rays, change means included in the crystals and configured to linearly change transmittance in a length direction of the crystals, and a control unitconfigured to calculate the DOI in the crystal layeron a basis of the first output signal and the second output signal. The scintillation light detector outputs the first output signal in one direction and the second output signal in a direction at a right angle to the one direction.

Apparatus and method for measuring depth-of-interaction using light dispersion and positron emission tomography using the same

The present invention relates to a system and method for compensating for anode gain non-uniformity in a Multi-anode Position Sensitive Photomultiplier Tube (PS-PMT), in which a compensation unit is disposed between the multi-anode position sensitive photomultiplier tube and a position detection circuit unit and configured to uniform a current signal inputted to the position detection circuit unit, thereby compensating for anode gain non-uniformity. In accordance with the present invention, the compensation unit for changing resistance is used. Accordingly, there is an advantage in that the gain non-uniformity of each of the anodes of the PS-PMT can be compensated for. Furthermore, the gain non-uniformity of each of the anodes of the PS-PMT is compensated for by changing resistance values of the variable resistances of the compensation unit. Accordingly, there is an advantage in that the interaction positions of gamma rays can be calculated more precisely.

System and method for compensating for anode gain non-uniformity in multi-anode position sensitive photomultiplier tube

Growing community of inventors

Seoul, South Korea

Seong Jong Hong