Search Results - "Lee, HakJae"

Follow-up of cognitive impairment in surgical critically ill survivors by Jung, Yooun Joong, Jeung, Kijae, An, Sungbak, Lee, Hakjae Lee, Hong, Suk Kyung, Ok, Jeonghui

“…Survivors of critical illness often suffer from cognitive impairment. Long-term cognitive impairment affects patient's quality of life and ability to adapt to…”
Get full text

Monte Carlo simulation study of an in vivo four-dimensional tracking system with a diverging collimator for monitoring radiation source (Ir-192) location during brachytherapy: proof of concept and feasibility by Oh, Geon, Lee, Jeongshim, Kim, Hunjung, Kim, Woochul, Kang, Sangwon, Chung, Jinbeom, Jeong, Seonghoon, Lee, Hakjae, Yoon, Myonggeun, Lee, Boram

“…The aim of this study was to demonstrate the potential of an four-dimensional (4D) tracking system to accurately localize the radiation source, Iridium-192…”
Get full text

Comparison of polymers to enhance mechanical properties of microneedles for bio-medical applications by Bonfante, Gwenaël, Lee, Hakjae, Bao, Leilei, Park, Jongho, Takama, Nobuyuki, Kim, Beomjoon

“…To pierce through the skin and interact with the first biofluid available, microneedles should be mechanically strong. However, some polymers used to fabricate…”
Get full text

Feasibility study of spent fuel internal tomography (SFIT) for partial defect detection within PWR spent nuclear fuel by Choi, Hyung-Joo, Park, Hyojun, Cheon, Bo-Wi, Choi, Hyun Joon, Lee, Hakjae, Chung, Yong Hyun, Min, Chul Hee

“…The International Atomic Energy Agency (IAEA) mandates safeguards to ensure non-proliferation of nuclear materials. Among inspection techniques used to detect…”
Get full text

Development of clinical application program for radiotherapy induced cancer risk calculation using Monte Carlo engine in volumetric-modulated arc therapy by Kang, Dong-Jin, Shin, Young-Joo, Jeong, Seonghoon, Jung, Jae-Yong, Lee, Hakjae, Lee, Boram

“…Background The purpose of this study is to develop a clinical application program that automatically calculates the effect for secondary cancer risk (SCR) of…”
Get full text

Optimization using Monte Carlo simulations of the thickness of a variable collimator for radiation monitoring by Han, Dong-Hee, Won, Jong-Hun, Lee, Seung-Jae, Lee, HakJae, Baek, Cheol-Ha

“…In this study, we used GATE v8.0 to optimize the design parameters for the layer thickness and the shape of holes in variable collimators with new methods for…”
Get full text

Development of a Multipurpose Gamma-Ray Imaging Detector Module With Enhanced Expandability by Min, Eungi, Jung, Young-Jun, Lee, Hakjae, Jang, Jinwook, Kim, Kyeong Min, Joo, Sung-Kwan, Lee, Kisung

“…A silicon photomultiplier (SiPM) is considered a next generation photo-sensor for low-light applications. In this study, we propose and develop the general…”
Get full text

Precise System Models using Crystal Penetration Error Compensation for Iterative Image Reconstruction of Preclinical Quad-Head PET by Lee, Sooyoung, Bae, Seungbin, Lee, Hakjae, Kim, Kwangdon, Lee, Kisung, Kim, Kyeong-Min, Bae, Jaekeon

“…A-PET is a quad-head PET scanner developed for use in small-animal imaging. The dimensions of its volumetric field of view (FOV) are 46.1 × 46.1 × 46.1 mm 3…”
Get full text

Simulation Study of Plasma Display Panel-Based Flat Panel X-Ray Detector by Hakjae Lee, Kisung Lee, Sangheum Eom, Hanho Park, Jungwon Kang

“…Screen-film-based radiography is being rapidly replaced by digital radiography (DR). Thin-film-transistors (TFT) with amorphous silicon (a-Si) or amorphous…”
Get full text

Development of a DAQ circuit for a plasma-display-panel-based X-ray detector by Hakjae Lee, Kisung Lee, Eungi Min, Sangheum Eom, Hanho Park, Jungwon Kang

“…The plasma display panel (PDP) is one of the most widely used display components in flat panel displays. It is popular in the TV market because of its…”
Get full text

Deformable registration for breast PET-CT and MR images based on perturbation weighted feature information by Mincheol Ko, Hakjae Lee, Kyeong-Min Kim, Sung-Kwan Joo, Kisung Lee

“…The objective of this study is to develop a deformable 3D image registration algorithm for breast PET-CT and MR images based on perturbation-weighted feature…”
Get full text

1227: CLINICAL OUTCOMES AND PROGNOSTIC FACTORS OF PATIENTS WITH SEPSIS CAUSED BY INTRA-ABDOMINAL INFECTION by Park, Chan Hee, Lee, Jeong Woo, Hong, Sukkyung, Lee, Hakjae

Get full text

FPGA-based multichannel data acquisition system for prototype in-beam PET by Eungi Min, Hyun-Il Kim, Kwangdon Kim, Hakjae Lee, Seungbin Bae, Su Jung An, Yongkown Kim, Yong Hyun Chung, Jinhun Joung

“…In-beam positron emission tomography (PET) is a clinically proven imaging technique for the online investigation of position emitters induced by hadron…”
Get full text

Statistics-based position decoding for a block detector by Seungbin Bae, Hakjae Lee, Kisung Lee, Kyeongmin Kim, Hyun-il Kim, Yonghyun Chung, Jinhun Joung

“…We are developing a block detector to be used in in-beam PET for hardron therapy, which consists of a discrete scintillator array and four round-type PMTs. To…”
Get full text

3D breast registration for PET-CT and MR based on surface matching by Hakjae Lee, Kisung Lee, Mincheol Ko, Jungwon Kang, Ilyang Joo, Hyeonjoon Moon, Kyeong-Min Kim

“…The objective of this study is to develop a 3D breast image registration algorithm for PET-CT and MR system. Proposed algorithm consists of three stages:…”
Get full text

Simulation Study on the Effect of Constant Hole Length of Curved Diverging Collimators for Radiation Monitoring Systems by Cha, Hyemi, Leem, Seowung, Cho, Kyeyoung, Kang, Cheolung, Bae, Seungbin, Yu, Byeongjae, Yeom, Jungyeol, Lee, Hakjae, Lee, Kisung

“…The nuclear accident that occurred in Fukushima, Japan, in 2011, resulted in considerable radiation leaks and mass exposure owing to an insufficient initial…”
Get full text

Development of a novel radiation monitoring system using a variable lofthole collimator by Kim, Daehong, Chung, Myung-Ae, Kang, Cheolung, Lee, Boram, Baek, Cheol-Ha, Cha, Hyemi, Yeom, Jungyeol, Lee, Kisung, Lee, Hakjae

“…This study aims to develop a variable lofthole (VL) collimator-based gamma camera with a zoom function for detecting radioactive materials in radiation…”
Get full text

Development of organ-specific dual-head single-photon emission computed tomography using variable pinhole collimator by Cha, Hyemi, Cho, Kyeyoung, Jung, Young-Jun, Bae, Seungbin, Kim, Kyeong Min, Kim, Minho, Lee, Hakjae, Lee, Kisung

“…Single-photon emission computed tomography (SPECT) is a nuclear medical imaging method enabling the user to view functional images of patients. The collimator,…”
Get full text

Image registration for PET/CT and CT images with particle swarm optimization by Hakjae Lee, Kisung Lee, Yongkwon Kim, Jinhun Joung, Kookhyun Moon, Sung-Kwan Joo, Kyeong-Min Kim, Gi-Jeong Chun

“…The objective of this research is to develop 2D/3D registration algorithm for PET/CT and CT or MR images acquired by different systems at different times. We…”
Get full text

Simulation study of a novel target oriented SPECT design using a variable pinhole collimator by Bae, Seungbin, Chun, Jaehee, Cha, Hyemi, Yeom, Jung Yeol, Lee, Kisung, Lee, Hakjae

“…Purpose In the past decade, demands for organ specific (target oriented) single‐photon emission computed tomography (SPECT) is increasing, and several groups…”
Get full text