변성완 교수

The data from KNHANES 2010-2012 showed gender differences at hearing thresholds of 3 kHz, 4 kHz, and 6 kHz in a highly-screened population. The most significant gender difference in relation to hearing threshold was observed at 4 kHz. The hearing thresholds at all of the tested frequencies worsened with increasing age. The mean hearing thresholds suggested in this study will be useful for the formulation of healthcare-related hearing policies and used as reference data for disability ratings for

Background and Objectives：Although several Korean PB (phonetically balanced word lists were proposed by many investigators, there is not yet a standard PB word list established in Korea. This study aims to study the actual condition of Korean PB word lists, to investigate the frequencies of Korean phonemes and to delineate the commonly used monosyllabic words among them. Materials and Method：The study materials were collected from 80 training hospitals in Korea. The frequencies of the initial co

OBJECTIVES: The aim of this study was to emphasize the necessity of a standard in segmentation threshold and algorithm for measuring volume and surface area of mastoid air cell system (MACS). METHODS: First, we obtained axial computed tomography scans of 54 normal temporal bones from 27 subjects. Then, we manipulated Hounsfield units (HU) image data in DICOM (digital imaging and communications in medicine) files directly using our program. The volume and surface area of MACS were computed and co

Background and Objective:Recent advances in the computer technology and the explosive increase in the internet contents have made it possible for us to calculate the exact frequencies of phonemes in the everyday dialogue of the Korean language, which can provide the basic data for the standardization of Korean phonetically balanced (PB word lists. This study was aimed to investigate the frequencies of Korean phonemes and to compare the results with the existing Korean PB words lists. Materials a

Background and Objectives：Although several Korean PB (phonetically balanced) word lists were proposed by many investigators, there is not yet a standard PB word list established in Korea. This study aims to study the actual condition of Korean PB word lists, to investigate the frequencies of Korean phonemes and to delineate the commonly used monosyllabic words among them. Materials and Method：The study materials were collected from 80 training hospitals in Korea. The frequencies of the initial c

Background and Objectives：Several investigators have developed word lists for Korean speech audiometry. Many variations audiometry. In this study, we propose new monosylabic and bisylabic word lists, whose performances can be compared with those of previous word lists, verified in clinical situations, and revised in future with proper reasons. We also report why some compromises have ben made in the words number and the phoneme frequencies of the new monosyllabic word lists. There was no comprom

BACKGROUND AND OBJECTIVES: This study investigated the frequencies of phonemes in the colloquial Korean language and compared them with those of the Korean spondee word list (KSWL). MATERIALS AND METHOD: One hundred fifty nine scripts (2, 312, 651 syllables) from several television dramas and news in Korean were selected as study materials. A computer program was developed and used to estimate the frequencies of phonemes from the pronunciated notation of the materials and KSWL. RESULTS: All mate

Background and Objectives：There can be 3,192 sylables in Korean language but the frequencies of each sylables are variable. This study was aimed to investigate the frequencies of each Korean sylable in the everyday dialogue and to compare the result with the existing Korean phoneticaly balanced (PB) word list, which can provide the basic data for the Materials and Method：Using 33 materials (total 537,245 syllables) colected from TV drama (MBC Best Theater), the author calculated the frequencies

Background and Objectives：This study investigated the frequencies of phonemes in the colloquial Korean language and comparedthem with those of the Korean spondee word list (KSWL). Materials and Method：One hundred fifty nine scripts(2,312,651 syllables) from several television dramas and news in Korean were selected as study materials. A computer programwas developed and used to estimate the frequencies of phonemes from the pronunciated notation of the materials and KSWL.Results：All materials exc

Objectives. The aim of this study was to emphasize the necessity of a standard in segmentation threshold and algorithm for measuring volume and surface area of mastoid air cell system (MACS). Methods. First, we obtained axial computed tomography scans of 54 normal temporal bones from 27 subjects. Then, we manipulated Hounsfield units (HU) image data in DICOM (digital imaging and communications in medicine) files directly using our program. The volume and surface area of MACS were computed and co

Despite a very strong correlation between the two thresholds, H3k and H24k showed clinically large LOAs. Therefore, it would be improper to substitute H24k for H3k in an individual requesting a hearing disability rating. However, since the overall means of the H3k and H24k samples were nearly equal, H24k can replace H3k for a mean comparison of results between studies. This result supports the 1995 Committee on Hearing and Equilibrium guideline.

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