- Renal Tubular Acidosis Mimicking Guillain Barre Syndrome
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Koh WS, Kwon KH, Kang KS, Lee BC, Cheong KH
- KMID: 1659747
- J Korean Neurol Assoc.
- 1996 Dec;14(4):1060-1066.
The typical attacks of hypokalemic periodic paralysis come on during sleep or at late night. The patients usually awaken to find mild or severe weakness of the limbs and the... -
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- Use of Statistical Process Control for Quality Assurance in Radiation Therapy
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Cheong KH
- KMID: 1889937
- Prog Med Phys.
- 2015 Jun;26(2):59-71.
- doi: 10.14316/pmp.2015.26.2.59
The goal of quality assurance (QA) is to minimize systematic errors in order to maintain the quality of a certain process. Statistical process control (SPC) has been utilized for QA... -
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- A Case of Cervical cord Tumor with Focal Myokymic Discharge in Intrinsic Hand Muscles
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Hong SH, Bae JC, Cheong KH, Cho PZ, Sunwoo IN
- KMID: 2065945
- J Korean Neurol Assoc.
- 1991 Dec;9(4):481-484.
Myokymic discharge is a train of motor unit potentials that occur spontaneously, recur regularly, and sometimes may be associated with clinical myokymia. We report a 39-years-old male with progressive muscle... -
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- Cone-beam Reconstruction using Limited EPID Projections for Seeds Localization
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Chang J, Jung WK, Park SH, Cheong KH, Suh TS
- KMID: 1482435
- Korean J Med Phys.
- 2008 Sep;19(3):186-190.
In this study, we describe the preliminary application for the delineation of a metal object using cone-beam reconstruction (CBR) based on limited electronic portal imaging device (EPID) projections. A typical... -
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- Solitary Plasmacytoma associated with Peripheral Neuropathy
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Rho SY, Cheong KH, Cho PZ, Park SC
- KMID: 2342447
- J Korean Neurol Assoc.
- 1994 Sep;12(3):527-533.
Solitary plasmacytoma, in contrast to the disseminated neoplastic proliferation of plasma cells with marked infiltration of multiple organ system in multiple myeloma, is plasma cell neoplasm of a single focus... -
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- Monte Carlo Photon and Electron Dose Calculation Time Reduction Using Local Least Square Denoising Filters
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Cheong KH, Suh TS, Cho BC, Jin H
- KMID: 2080300
- Korean J Med Phys.
- 2005 Sep;16(3):138-147.
The Monte Carlo method cannot have been used for routine treatment planning because of heavy time consumption for the acceptable accuracy. Since calculation time is proportional to particle histories, we... -
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- Intracellular trafficking and metabolic turnover of yeast prepro-alpha-factor-SRIF precursors in GH3 cells
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Lee MA, Cheong KH, Shields D, Park SD, Hong SH
- KMID: 931879
- Exp Mol Med.
- 2002 Sep;34(4):285-293.
Chimeric genes coding for prepro region of yeast alpha-factor and anglerfish SRIF were expressed in rat GH3 cells to determine whether yeast signals could regulate hormone processing in mammalian... -
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- Intraexaminer Variability of Nerve Conduction Study in Healthy Person
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Kim SH, Kim SM, Jung YK, Kang SY, Kwon SH, Roh SY, Cheong KH, Moon JS, Kwon KH, Nam JM, Sunwoo IN
- KMID: 1956951
- J Korean Neurol Assoc.
- 2004 Jun;22(3):235-239.
BACKGROUND: Nerve conduction study (NCS) is an objective and quantitative test in evaluating peripheral nerve disorders. Several physiological and technical factors are well known to influence the results of NCS,... -
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- Cliaical Characteristics of Benign Focal Amyotrophy
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Cheong KH, Cho PZ, Sunwoo IN, Park YK, Lee SA, Kim KW, Park KD
- KMID: 1686373
- J Korean Neurol Assoc.
- 1992 Dec;10(4):447-456.
A discription is given of 24 patients with the benigen focal amyotrophy; Nineteen had upper-limb and five had lower-limb involvement. The characteristic clinca! Features were insidious onset in the second... -
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- Evaluation of the Radiochromic Film Dosimetry for a Small Curved Interface
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Kang SK, Park S, Hwang T, Cheong KH, Han T, Kim H, Lee MY, Kim KJ, Bae H
- KMID: 2315728
- Prog Med Phys.
- 2012 Dec;23(4):234-238.
A tumor on the eyelid is often treated using a high-energy electron beam, with a metallic eye shield inserted between the eyelid and the eyeball to preserve the patient's sight.... -
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- Implementation and Evaluation of the Electron Arc Plan on a Commercial Treatment Planning System with a Pencil Beam Algorithm
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Kang SK, Park S, Hwang T, Cheong KH, Lee MY, Kim KJ, Oh DH, Bae H
- KMID: 1460197
- Korean J Med Phys.
- 2010 Sep;21(3):304-310.
Less execution of the electron arc treatment could in large part be attributed to the lack of an adequate planning system. Unlike most linear accelerators providing the electron arc mode,... -
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- A Monte Carlo Simulation for the Newly Developed Head-and-Neck IMRT Phantom: a Pilot Study
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Kang SK, Cheong KH, Ju RH, Cho BC, Oh DH, Kim SS, Kim KJ, Bae H, Han Y, Shin EH, Park SH, Lim C
- KMID: 2243996
- Korean J Med Phys.
- 2007 Sep;18(3):126-133.
A head-and-neck phantom was designed in order to evaluate remotely the quality of the delivery dose of intensity modulated radiation therapy (IMRT) in each institution. The phantom is homogeneous or... -
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- CT Findings in Eclampsia
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Suk SH, Sunwoo IN, Bae JC, Cheong KH, Cho PZ
- KMID: 1957357
- J Korean Neurol Assoc.
- 1993 Dec;11(4):533-540.
Eclampsia is characterized by hypertension. Proteinuria, edema. And seizures or mental changes after the 20th week of gestation. The incidence of abnormal CT findings in eclamptic patients are reported in... -
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- Two Fatal Cases due to Porphyric Peripheral Neurophathy
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Bae JC, Cheong KH, Cho PZ, Rho SY, Sunwoo IN, Koo HS
- KMID: 1957367
- J Korean Neurol Assoc.
- 1993 Dec;11(4):599-606.
We report two cases of porphyric peripheral neuropathy in a 19-year-old male with variegate porphyria and in a 39 year-old male with intermittent acute prophyria. Clinically, there were sensory, motor... -
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- Evaluation of Geometric Correspondence of kV X-ray Images, Electric Portal Images and Digitally Reconstructed Radiographic Images
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Cheong KH, Kim KJ, Cho BC, Kang SK, Juh RH, Bae HS, Suh TS
- KMID: 2243995
- Korean J Med Phys.
- 2007 Sep;18(3):118-125.
In this study we estimated a geometric correlation among digitally reconstructed radiographic image (DRRI), kV x-ray image (kVXI) from the On-Board Imager (OBI) and electric portal image (EPI). To verify... -
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- Convolution-Superposition Based IMRT Plan Study for the PTV Containing the Air Region: A Prostate Cancer Case
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Kang SK, Yoon JW, Park S, Hwang T, Cheong KH, Han T, Kim H, Lee MY, Kim KJ, Bae H
- KMID: 1910569
- Prog Med Phys.
- 2013 Dec;24(4):271-277.
- doi: 10.14316/pmp.2013.24.4.271
In prostate IMRT planning, the planning target volume (PTV), extended from a clinical target volume (CTV), often contains an overlap air volume from the rectum, which poses a problem inoptimization... -
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- Error Analysis of Delivered Dose Reconstruction Using Cone-beam CT and MLC Log Data
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Cheong KH, Park S, Kang SK, Hwang TJ, Lee MY, Kim KJ, Bae H, Oh DH
- KMID: 1460184
- Korean J Med Phys.
- 2010 Dec;21(4):332-339.
We aimed to setup an adaptive radiation therapy platform using cone-beam CT (CBCT) and multileaf collimator (MLC) log data and also intended to analyze a trend of dose calculation errors... -
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- Development of an Automatic Seed Marker Registration Algorithm Using CT and kV X-ray Images
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Cheong KH, Cho BC, Kang SK, Kim KJ, Bae HS, Suh TS
- KMID: 2198534
- J Korean Soc Ther Radiol Oncol.
- 2007 Mar;25(1):54-61.
PURPOSE: The purpose of this study is to develop a practical method for determining accurate marker positions for prostate cancer radiotherapy using CT images and kV x-ray images obtained from... -
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- Dose Verification Study of Brachytherapy Plans Using Monte Carlo Methods and CT Images
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Cheong KH, Lee MY, Kang SK, Bae H, Park S, Kim KJ, Hwang TJ, Oh DH
- KMID: 1460191
- Korean J Med Phys.
- 2010 Sep;21(3):253-260.
Most brachytherapy treatment planning systems employ a dosimetry formalism based on the AAPM TG-43 report which does not appropriately consider tissue heterogeneity. In this study we aimed to set up... -
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- The usefulness of standardization of the nerve conduction study in the diagnosis and follow up of the demyelinating polyneuropathy
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Lee KY, Kim WK, Kwon SH, Cho TY, Lee SH, Cheong KH, Park KD, Kim SM, Sunwoo IN
- KMID: 2342697
- J Korean Neurol Assoc.
- 1998 Aug;16(4):510-518.
BACKGROUND: Nerve conduction study is an objective and quantitative diagnostic method for the diagnosis and follow-up study of polyneuropathy. Sometimes it is hard to interpret the nerve conduction study, because... -
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