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Usefulness of Three Dimensional Proset MR Images for Diagnosis of Symptomatic L5-S1 Foraminal and Extraforaminal Stenosis

Kim SW, Kim CH, Kim MS, Jung YJ, Byun WM

OBJECTIVE: To suggest a new useful diagnostic technique, principles of the selective excitation technique-magnetic resonance images (Proset-MRI), and to know the precise radiologic findings that can prove symptomatic foraminal and...
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Differentiation between Symptomatic and Asymptomatic Extraforaminal Stenosis in Lumbosacral Transitional Vertebra: Role of Three-Dimensional Magnetic Resonance Lumbosacral Radiculography

Byun WM, Kim JW, Lee JK

OBJECTIVE: To investigate the role of lumbosacral radiculography using 3-dimentional (3D) magnetic resonance (MR) rendering for diagnostic information of symptomatic extraforaminal stenosis in lumbosacral transitional vertebra. MATERIALS AND METHODS: The study...
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Three-Dimension Magnetic Resonance Lumbosacral Radiculography by Principles of the Selective Excitation Technique Imaging in the Diagnosis of Symptomatic Foraminal Stenosis

Lim JK, Byun WM

PURPOSE: To investigate significance of three-dimension (3D) magnetic resonance (MR) lumbosacral radiculography by principles of the selective excitation technique (Proset) in the diagnosis of symptomatic foraminal stenosis. MATERIALS AND METHODS: A...
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Cerebral Post-Transplant Lymphoproliferative Disorder Occurring after Renal Transplantation: A Case Report

Suh JH, Byun WM, Kim HC, Hwang MS

Post-transplant lymphoproliferative disorder (PTLD) is a complication of organ transplantation and immunosuppression. A 36-year-old woman with a history of renal transplantation visited the hospital complaining of headache and on pathology...
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Acute Cerebral Infarction after FK 506 Administration in a Kidney Transplantation Recipient: A Case Report

Lim JK, Byun WM, Kim JW

FK506 is widely used as a potent immunosuppressive agent following organ transplantation. However, the use of FK506 is associated with a wide spectrum of neurotoxicity. FK506-induced cerebral infarctions have rarely...
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Extensive demyelinating change in cerebrum after a total knee replacement: A case report

Park SJ, Kim SD, Jee DL, Byun WM

Demyelination is characterized by the loss of myelin with the preservation of axons. Demyelinating diseases can be classified into several categories: demyelination due to inflammation, viral infection, osmotic derangements and...
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Quantitative Evaluation of the Corticospinal Tract Segmented by Using Co-registered Functional MRI and Diffusion Tensor Tractography

Jang SH, Hong JH, Byun WM, Hwang CH, Yang DS

  • KMID: 1471617
  • J Korean Soc Magn Reson Med.
  • 2009 Jun;13(1):40-46.
PURPOSE: The purpose of this study was to investigate the quantitative evaluation of the corticospinal tract (CST) at the multiple levels by using functional MRI (fMRI) co-registered to diffusion tensor...
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Bilateral Medial Medullary Infarction Demonstrated by Diffusion-Weighted Imaging: Case Report

Jang HW, Byun WM

A 78-year-old woman presented with weakness of the extremities, dysarthria, dizziness, and sensory impairment. Magnetic resonance imaging showed acute bilateral medial medullary infarction. Contrast enhanced magnetic resonance angiography demonstrated stenosis...
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Hemangioblastoma of the Fourth Ventricle: Case Report

Son RC, Byun WM, Lee HJ, Jang HW, Choi JH

Tumors arising from ventricular wall are usually ependymomas, subependymomas, and subependymal giant cell astrocytomas. Intraventricular hemangioblastomas are very unusual, especially hemangioblastomas in the fourth ventricle. Here, we described a hemangioblastoma...
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MR Imaging of a Cerebello-Pontine Angle Epidermoid Cyst with a Malignant Transformation: Case Report

Jang HW, Byun WM

The malignant transformation of an epidermoid cyst can be discovered at the same time as a pre-existing epidermoid cyst, or during a follow-up examination after an incomplete excision. We describe...
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Diffusion Weighted MRI Patterns Caused by Acute Border Zone Infarction

Jang HW, Byun WM

PURPOSE: We investigated the causes and mechanisms driving acute border zone infarctions using diffusion-weighted imaging (DWI). MATERIALS AND METHODS: We analyzed DWI in 104 patients (male: 72 years, female: 32 years,...
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MR Manifestations of the Brain in Neuropsychiatric Systemic Lupus Erythematosus Patients

Oh KC, Byun WM, Jang HW, Kim KR

PURPOSE: The primary goal of this study was to evaluate the MR findings of systemic lupus erythematosus (SLE) patients with neuropsychiatric symptoms. MATERIALS AND METHODS: The MR images of 38 patients...
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Endovascular Treatment of Traumatic Carotid- Jugular Fistula: Report of Two Cases

Jang HW, Byun WM, Kim JW, Chang CH

We report 2 patients with a traumatic carotid- jugular fistula. The first patient suffered a deep neck penetrating injury. The external carotid-jugular fistula was demonstrated by 3-dimension CT angiography (3D...
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Subcutaneous Emphysema and Inflammation of the Neck after Tracheal Puncture by an Intubating Stylet

Jung G, Byun WM, Lim HJ, Kim JG, Kwak DM, Lee DH, Kim SY, Song SO, Seo IS, Jee DL, Kim HD, Park DP

  • KMID: 2320149
  • Yeungnam Univ J Med.
  • 2007 Dec;24(2):344.
Laryngo-tracheal perforation caused by the use of a stylet during tracheal intubation is a rare complication. We present a case of subcutaneous emphysema and connective tissue inflammation after tracheal intubation....
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In Vivo and In Vitro Studies of the Steady State Free Precession-Diffusion-Weighted MR Imagings on Low b-value: Validation and Application to Bone Marrow Pathology

Byun WM

  • KMID: 2320123
  • Yeungnam Univ J Med.
  • 2007 Dec;24(2):119-128.
PURPOSE: The purpose of this study was a phantom study to measure the diffusion properties of water molecules by steady-state free precession diffusion-weighted imaging (SSFP-DWI) with a low b-value and...
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Evidence of Cortical Reorganization in a Monoparetic Patient with Cerebral Palsy Detected by Combined Functional MRI and TMS

Kwon YH, Jang SH, Lee MY, Byun WM, Cho YW, Ahn SH

  • KMID: 2320209
  • Yeungnam Univ J Med.
  • 2005 Jun;22(1):96-103.
The motor recovery mechanism of a 21-year-old male monoparetic patient with cerebral palsy, who had complained of a mild weakness on his right hand since infancy, was examined using functional...
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Two Cases of Metronidazole-induced Encephalopathy

Kim KH, Choi JW, Lee JY, Kim TD, Paek JH, Lee EJ, Oh HA, Kim JH, Jang BI, Kim TN, Chung MK, Lee HJ, Byun WM

  • KMID: 1767496
  • Korean J Gastroenterol.
  • 2005 Mar;45(3):195-200.
Metronidazole is a 5-nitroimidazole compound known as an antimicrobial agent widely used for the treatment of protozoal infection, anaerobic infection, Helicobacter pylori infection and hepatic encephalopathy. It may produce a...
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The Diagnosis of Motor Tract Disruption in Thalamic and Putaminal Hemorrhage using Diffusion Tensor MRI and Its Relation with Motor Recovery

Shin CS, Kim SH, Jang SH, Byun WM, Chang CH, Kim OL

  • KMID: 2188962
  • J Korean Neurosurg Soc.
  • 2004 Jun;35(6):555-559.
OBJECTIVE: The purpose of this study is to prove and quantify motor tract disruption and to correlate with motor weakness and its recovery in thalamic and putaminal hemorrhage using diffusion...
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High-Resolusion Magnetic Resonance Imaging of Carotid Atherosclerotic Plaque

Byun WM, Cho JH

  • KMID: 2320213
  • Yeungnam Univ J Med.
  • 2004 Dec;21(2):143-150.
A thromboembolic stroke is believed to be precipitated by a rupture of vulnerable atheromatous plaques. Until recently the assessment of a further risk of stroke in high-risk patients in whom...
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Evidence of Microstructural Abnormality on Descending Motor Pathway in Cerebral Plasied Children with Periventricular Leukomalacia: Diffusion Tensor MRI Study

Lee ZI, Park SM, Ahn SH, Jang SH, Son SM, Byun WM

  • KMID: 2323848
  • J Korean Acad Rehabil Med.
  • 2003 Jun;27(3):340-343.
OBJECTIVE: Using diffusion tensor MRI (DTI), to investigate the microstructural abnormality of corticospinal tract in the cerebral palsied children with periventricular leukomalacia on conventional MRI and to recognize the clinical...
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