갑상선 암 환장서 기관지 편이 정도를 평가하는 방법의 연구

유영삼,Yoo, Young-Sam 대한기관식도과학회 2010 大韓氣管食道科學會誌 Vol.16 No.2

Background: Tracheal deviations are encountered frequently in head and neck tumors especially in thyroid cancer. Dyspnea and stridor are symptom calling for surgery. The method of evaluation in tracheal deviation is not well established yet. This paper is aimed to suggest objective tools to evaluate tracheal deviation in relation to cervical vertebra. Material and Method: Ten cases of thyroid cancers were recruited retrospectively. Tracheal inner shadow and shape of cervical vertebra were reconstructed three dimensionally using 3D-doctor to compare position of trachea in relation to vertebral body. Extent of deviation was scored in relation to both lateral borders of vertebral body. Angles between trachea and spinous process were measured in axial CT and compared between study group and control group. Results: Deviation scores were statistically significant between study group (mean=1.1) and control group (mean=0) (p=0.0008). Deviation angles at maximal tumor size in study group (mean=160.3 Degrees) and deviation angles of control group (mean=177.1 Degrees) were statistically significant (p=0.0007). Angles at maximal deviation of three dimensional images ages in study group (mean=162.6 Degrees) and deviation angles of control group (mean=177.1 Degrees) were statistically significant (p=0.0089). Conclusion: Tracheal deviation can be evaluated using scoring of three dimensional images and measuring angle between trachea and vertebral spine.

고어텍스를 이용한 제1형 갑상연골성형술

유영삼,Yoo, Young-Sam 대한후두음성언어의학회 2007 대한후두음성언어의학회지 Vol.18 No.1

Many kinds of materials have been used up to now for vocal fold paralysis. Although silastic block has been the most popular material, some difficulties in carving, positioning, and placing have been the causes to find more easily applicable materials. Hy-droxylapatite, gelfoam, hyaluronic acid and fat have been suggested and used for this purposes with some limitations. During last decade, Gore-Tex was introduced and replacing old materials and showed good surgical results with less difficulties. This material is biocompatible and familiar to surgeons because it had been invented in 1960's. In addition it is easy to shape and place Gore-Tex into the window with many clinical experiences. In some problem cases, it is easy to remove from the body with less damage to surrounding tissue. The basic surgical techniques are as follows. 1) Creating window. 2) Positioning and placing the material. 3) Immobilizing the material and closing the window. The modified methods ae introduced in details with figures.

정상인과 후두질환 환자에서 Glottal Area Waveform의 차이에 관한 연구

유영삼,Yoo, Young-Sam,Rosen, Clark A. 대한후두음성언어의학회 2005 대한후두음성언어의학회지 Vol.16 No.1

Background and Objectives : Glottal area waveform(GAW) shows the plot of glottal area versus time through the 1 cycle. This study is designed to see how it can be applied to laryngeal patients. Material and Methods : A GAW analysis was peformed on 11 patients before and after surgery and 22 persons without laryngeal problems were recruited for control. Acoustic and aerodynamic analysis with VHI(voice handicap index) evaluation were performed. Results. Significant changes in baseline offset, gross closing rate and VHI were observed postoperatively. Other parameters were changed but insignificant. Conclusion : GAW maybe used to evaluate patient with voice problems.

교란효과를 고려한 샌드 드레인의 약식설계

유영삼,정충기 한국지반공학회 1994 지반 : 한국지반공학회지 Vol.10 No.3

The effects of smear and well resistance should be taken into account for the design of sand drains. Practically, simple design, which employs the method using 112 reduced diameter of drains or assuming the coefficient of consolidation in horizontal direction equals to that in vertical direction, based on the theory neglecting these effects, has been used. In this study, the reliability of existing simple design methods as well as the influences of smear and well resistance was investigated with the equations proposed by Hansbo and Onoue. It is shown that the consolidation time is chiefly governed by the effect of smear for drains with highly permeable sands. For general soil condition and placing type of sand drain, consolidation time is underestimated for simple design wi어. 1/2 reduced diameter of drains, and it is overestimated for that with the assumption that the coefficient of consolidation in horizontal direction equals to that in vertical direction. Through the investigations on different reduced diameter, it was shown that simple design with 1/4 reduced diameter of drains yielded the reliable results with errors less than 6%.

시차를 두고 양측에 발생한 이하선암종 1예

유영삼,최찬,손정협,김희주 대한이비인후과학회 2007 대한이비인후과학회지 두경부외과학 Vol.50 No.5

is very rare. We report a case of metachronous bilateral double primary Carcinosarcoma and Squamous cell carcinoma of both parotid glands in the same patient. He received operation and postoperative radiotherapy for a left parotid gland cancer. Four years later, the right parotid gland cancer developed, which was treated by excision folowed by radiotherapy. At folow-up, he remained fre of disease. ;50 :464-7)

비후성 비염환자에서 음성검사 및 음향비강통기도검사를 이용한 수술전후 비교

유영삼,우훈영,윤자복,최정환,조경래 대한후두음성언어의학회 2001 대한후두음성언어의학회지 Vol.12 No.1

Background and Objectives : With the development of computerized systems, an objective evaluation methods of nasal speech and nasal geometry have become readily available by means of a simple, noninvasive technique. In this study, we assessed the nasality, nasal formant, nasal volume and nasal area in patients with hypertrophic rhinitis before and after turbinate surgery. Material and Method : With the nasometer, we measured nasalance, which reflects the ratio of acoustic energy output of nasal sounds from the nasal and oral cavities. With CSL 4300B, we measured nasal formants. We used acoustic rhinometer to measure nasal area and nasal volume. Postoperative changes of above factors were compared with preoperative values. Paired t-test and Pearson's correlation were used for statistical analysis. Results : The first nasal formant frequency, nasalance scores of three passages(baby, mamma and rabbit passages), minimal cross sectional area(MCA) of narrow side, nasal volume of narrow side and nasal volume of wide side had increased significantly after turbinate surgery (p <0.05). The MCA and nasal volume of narrow side and MCA of wide side showed significant correlation with nasalance score of rabbit passage and baby passage showed significant correlation with nasal volume of narrow side(p<0.05). Conclusion : There were significant increases in nasalance scores, first nasal formant frequency, MCA and nasal volume after turbinate surgery. Thus, we must consider the possibility of voice changes postoperatively in professional voice users.

양성 대칭성 지방종증 1예

유영삼,조경래,정상원,한동훈,Yoo, Young-Sam,Jo, Kyung-Rai,Chung, Sang-Won,Han, Dong-Hoon 대한기관식도과학회 2002 大韓氣管食道科學會誌 Vol.8 No.2

Benign symmetric lipomatosis is a rare disease. Its main characteristic is the symmetric massive deposits of adipose tissue, in unencapsulated form, predominatly on the neck, shoulder, back and upper exterimities. We report a case of a 61 year old man with benign symmetric lipomatosis. He had a history of alcoholic liver cirrhosis. Due to cosmetic defomity, he wanted surgical treatment . We did a cervical lipectomy. He was satisfied with the result, and there was no evidence of recurrence.

Evaluation of the KASI Detector Performance Test System Using an Andor iKon M CCD Camera

유영삼,김진솔,정웅섭,김민진,최성환,박성준 한국우주과학회 2018 Journal of Astronomy and Space Sciences Vol.35 No.3

The characterization of detectors installed in space- and ground-based instruments is important to evaluate the system performance. We report the development of a detector performance test system for astronomical applications using the Andor iKon M CCD camera. The performance test system consists of a light source, monochromator, integrating sphere, and power meters. We adopted the Czerny–Tuner monochromator with three ruled gratings and one mirror, which covers a spectral range of 200–9,000 nm with a spectral resolution of ~1 nm in the visible region. Various detector characteristics, such as the quantum efficiency, sensitivity, and noise, can be measured in wide wavelength ranges from the visible to mid-infrared regions. We evaluated the Korea Astronomy and Space Science Institute (KASI) detector performance test system by using the performance verification of the Andor iKon-M CCD camera. The test procedure includes measurements of the conversion gain (2.86 e−/ADU), full well capacity (130 K e−), nonlinearity, and pixel defects. We also estimated the read noise, dark current, and quantum efficiency as a function of the temperature. The lowest measured read noise is 12 e−. The dark current at 223 K was determined to be 7 e−/s/pix and its doubling temperature is 5.3°C ± 0.2°C at an activation energy of 0.6 eV. The maximum quantum efficiency at 223 K was estimated to be 93 % ± 2 %. We proved that the quantum efficiency is sensitive to the operating temperature. It varies up to 5 % in the visible region, while the variation increases to 30 % in the near-infrared region. Based on the comparison of our results with the test report by the vendor, we conclude that our performance test results are consistent with those from the vendor considering the test environment. We also confirmed that the KASI detector performance test system is reliable and our measurement method and analysis are accurate.

림프상피암종 3예

유영삼,성원진,최찬,손정협 대한이비인후과학회 2006 대한이비인후과학회지 두경부외과학 Vol.49 No.8

Lymphoepithelial carcinoma was first reported in 1962. Since then, about 130 cases have been reported in the English-languageliterature. Lymphoepithelial carcinoma is a rare tumor of the major salivary gland. Most reported cases have occurred in Asiansand Eskimos. We report two cases of lymphoepithelial carcinoma of the major salivary glands and one case of lymphoepithelialcarcinoma of unknown origin. They received operation and postoperative radiotherapy. At follow-up, they remained free ofdisease. (Korean J Otolaryngol 2006;49:857-61)

음성분석기를 이용한 애성의 수치적 평가에 관한 연구

유영삼,김광현,김진영 대한이비인후과학회 1991 대한이비인후과학회지 두경부외과학 Vol.34 No.1