Hyung Myung

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BACKGROUND/AIMS Effective bowel preparation is essential for accurate diagnosis of colon disease. We investigated efficacy and safety of 2 L polyethylene glycol (PEG) solution with 90 mL sodium phosphate (NaP) solution compared with 4 L PEG method. METHODS Between August 2009 and April 2010, 526 patients were enrolled who visited Seoul National University(More)
For the pharmacokinetic analysis of isoniazid transfer into CSF, steady-state isoniazid concentrations of plasma and CSF were measured in eleven tuberculous meningitis patients confirmed with findings of CSF and neuroimazing. Peak plasma levels (4.17-21.5 micrograms/mL) were achieved at 0.25 to 3 hours after multiple isoniazid dose (600 mg/day). Terminal(More)
To evaluate the efficacy of magnetic resonance imaging in brainstem stroke, we studied 21 cases of clinically definite brainstem ischemic stroke with brain magnetic resonance imaging (MRI) and conventional computed tomography (CT). MRI demonstrated brainstem lesions in 79% of the cases (16.5 out of 21), while CT revealed 33% (7 out of 21) when cases with(More)
BACKGROUND/AIMS The aim of this study was to elucidate the antiviral efficacy and the predictors of entecavir treatment in nucleoside-naive chronic hepatitis B patients. METHODS A total of 160 patients treated with entecavir (0.5 mg daily) for at least 24 weeks were consecutively enrolled. The virologic response (HBV DNA<2,000 copies/mL), biochemical(More)
We studied three patients with spontaneous mesencephalic hemorrhages. All presented with some degree of impaired consciousness and abnormal ocular movements. One patient had a convergence-retraction nystagmus with a unilateral hemorrhage confined to the dorsal midbrain. Another patient showed left third nerve palsy due to a unilateral hemorrhage that(More)
Clinical and postmortem findings of a case that had combined alcoholic pellagra encephalopathy and Wernicke disease are described. This 51-year-old malnourished and chronic alcoholic man presented with progressive mental deterioration, pellagra dermatitis, hypertonus of the neck and other musculatures, myoclonic jerks with bizarre involuntary movements, in(More)
To assess the regional cerebral blood flow (rCBF) in ischemic stroke, we analyzed the findings of single photon emission computed tomography (SPECT) using technetium-99m hexamethyl propyleneamine oxime (Tc-99m HMPAO). The SPECT images revealed abnormal areas of decreased perfusion in 29 out of 31 subjects (93.5%), which represented a higher detection rate(More)
This study was intended to correlate the appearance of the cavernous segment of the carotid artery on MR images with the presence of significant stenosis or occlusion of the cervical carotid artery as seen on angiograms in 37 patients with cerebrovascular disorders who had brain MRI and arteriography. Three patients demonstrated an isointense signal within(More)