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Added Value of Chemical Exchange-Dependent Saturation Transfer MRI for the Diagnosis of Dementia

Oh JH, Choi BG, Rhee HY, Lee JS, Lee KM, Park S, Cho AR, Ryu CW, Park KC, Kim EJ, Jahng GH

Objective: Chemical exchange-dependent saturation transfer (CEST) MRI is sensitive for detecting solid-like proteins and may detect changes in the levels of mobile proteins and peptides in tissues. The objective of...
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Magnetic Resonance Imaging: Historical Overview, Technical Developments, and Clinical Applications

Jahng GH, Park S, Ryu CW, Cho ZH

The authors congratulate the cerebrations for the 30 years of the Korean Society of Medical Physics (http://www.ksmp.or.kr/). The paper is published to recognize the anniversary. Geon-Ho Jahng invited Professor Z....
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The Role of Double Inversion Recovery Imaging in Acute Ischemic Stroke

Choi NY, Park S, Lee CM, Ryu CW, Jahng GH

PURPOSE: The purpose of this study was to investigate if double inversion recovery (DIR) imaging can have a role in the evaluation of brain ischemia, compared with diffusion-weighted imaging (DWI)...
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Changes in the Laterality of Functional Connectivity Associated with Tinnitus: Resting-State fMRI Study

Shin Y, Ryu CW, Jahng GH, Park MS, Byun JY

PURPOSE: One of the suggested potential mechanisms of tinnitus is an alteration in perception in the neural auditory pathway. The aim of this study was to investigate the difference in...
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Assessment of the Cerebrospinal Fluid Effect on the Chemical Exchange Saturation Transfer Map Obtained from the Full Z-Spectrum in the Elderly Human Brain

Park S, Jang J, Oh JH, Ryu CW, Jahng GH

PURPOSE: With neurodegeneration, the signal intensity of the cerebrospinal fluid (CSF) in the brain increases. The objective of this study was to evaluate chemical exchange saturation transfer (CEST) signals with...
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Characteristic Signs on T2*-Based Imaging and Their Relationship with Results of Reperfusion Therapy for Acute Ischemic Stroke: A Systematic Review and Evidence to Date

Ko HC, Ryu CW, Yun SJ, Koh JS, Shin HS, Kim EJ

PURPOSE: Characteristic signs – the susceptibility vessel sign (SVS) and the prominent hypointense vessel sign (PHVS) – on T2*-based magnetic resonance imaging (T2*MRI) can be seen for acute ischemic stroke...
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Towards More Readable and Citable Journal

Lee JS, Kim DJ, Ryu CW

No abstract available.
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Alberta Stroke Program Early CT Score in the Prognostication after Endovascular Treatment for Ischemic Stroke: A Meta-analysis

Ryu CW, Shin HS, Park S, Suh SH, Koh JS, Choi HY

PURPOSE: The Alberta Stroke Program Early CT Score (ASPECTS) was devised to quantify the extent of early ischemic changes in the middle cerebral artery territory on brain CT. We performed...
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Patient Radiation Exposure During Diagnostic and Therapeutic Procedures for Intracranial Aneurysms: A Multicenter Study

Ihn YK, Kim BS, Byun JS, Suh SH, Won YD, Lee DH, Kim BM, Kim YS, Jeon P, Ryu CW, Suh SI, Choi DS, Choi SS, Choi JW, Chang HW, Lee JW, Kim SH, Lee YJ, Shin SH, Lim SM, Yoon W, Jeong HW, Han MH

PURPOSE: To assess patient radiation doses during cerebral angiography and embolization of intracranial aneurysms across multi-centers and propose a diagnostic reference level (DRL). MATERIALS AND METHODS: We studied a sample of...
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Change in Functional Connectivity in Tinnitus and its Relation with Tinnitus Laterality

Song EJ, Ryu CW, Jahng GH, Park MS, Byun JY, Park S, Kim EJ, Choi WS

PURPOSE: To identify potential differences in resting-state networks according to laterality of tinnitus using resting-state functional MRI (fMRI). MATERIALS AND METHODS: A total of 83 age-matched subjects consisting of 19 patients...
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Incidental Saccular Aneurysms on Head MR Angiography: 5 Years' Experience at a Single Large-Volume Center

Park S, Lee DH, Ryu CW, Pyun HW, Choi CG, Kim SJ, Suh DC

BACKGROUND AND PURPOSE: The diagnostic accuracy for unruptured intracranial aneurysms has increased, and incidental asymptomatic aneurysms have come to represent a substantial clinical burden because of their controversial natural history....
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High-Resolution MRI of Intracranial Atherosclerotic Disease

Ryu CW, Kwak HS, Jahng GH, Lee HN

Intracranial atherosclerotic disease (ICAD) causes up to 10% of all ischemic strokes, and the rate of recurrent vascular ischemic events is very high. Important predictors of vulnerability in atherosclerotic plaques...
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Intrathyroidal thymic tissue mimicking a malignant thyroid nodule in a 4-year-old child

Park SH, Ryu CW, Kim GY, Shim KS

  • KMID: 2049900
  • Ultrasonography.
  • 2014 Jan;33(1):71-73.
Intrathyroidal thymic tissue is rare and may be confused with a malignant thyroid nodule because of hyperechoic dots mimicking calcifications. We report the case of a thyroid nodule with malignant...
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Voxel-based Investigations of Phase Mask Effects on Susceptibility Weighted Images

Hwang EJ, Kim MJ, Kim HG, Ryu CW, Jahng GH

  • KMID: 2315741
  • Prog Med Phys.
  • 2013 Mar;24(1):25-34.
To investigate effects of phase mask on susceptibility-weighted images (SWI) using voxel-based analyses in normal elderly subjects. A three-dimensional (3D) gradient echo sequence ran to obtain SWIs in 20 healthy...
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A Myth Debunked: the Results of SYNTHESIS Expansion and IMS III

Ryu CW

No abstract available.
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Changes of Motor Deactivation Regions in Patients with Intracranial Lesions

Lee SH, Koh JS, Ryu CW, Jahng GH

OBJECTIVE: There is a rich literature confirming the default mode network found compatible with task-induced deactivation regions in normal subjects, but few investigations of alterations of the motor deactivation in...
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Investigation of the Correlation between Seoul Neuropsychological Screening Battery Scores and the Gray Matter Volume after Correction of Covariates of the Age, Gender, and Genotypes in Patients with AD and MCI

Lee SY, Yoon SY, Kim MJ, Rhee HY, Ryu CW, Jahng GH

PURPOSE: To investigate the correlations between Seoul Neuropsychological Screening Battery (SNSB) scores and the gray matter volumes (GMV) in patients with Alzheimer's disease (AD) and mild cognitive impairment (MCI) and...
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Late Spontaneous Recanalization of Chronic Middle Cerebral Artery Occlusion

Lee CY, Ryu CW, Koh JS, Kim GK

Early spontaneous recanalization of the middle cerebral artery in acute ischemic phase artery is not uncommon, whereas the late spontaneous recanalization of chronic occluded artery is a very rare phenomenon...
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Welcome to the New Members of the Editorial Board

Ryu CW

No abstract available.
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Structural and Functional Changes of Hippocampus in Long Life Experienced Taxi Driver

You MW, Lee DK, Lee JM, Kim SM, Ryu CW, Kim EJ, Jahng GH

PURPOSE: The objective of this study was to investigate the differences of hippocampal volume and shape as well as the functional change between long life experienced taxi drivers and controls...
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