1.Bronchogenic carcinoma manifesting unilateral hyperlucent lung: CT features.
Woo Su CHO ; Kyung Soo LEE ; Byoung Ho LEE
Journal of the Korean Radiological Society 1991;27(3):348-350
No abstract available.
Carcinoma, Bronchogenic*
;
Lung, Hyperlucent*
2.Changes of Cerebral Blood Flow Velocity before and after Closure of Ductus Arteriosus using Doppler Ultrasound in NormalFull-term Newborns.
Myung Su LEE ; Young Mi HONG ; Kyung Hee KIM
Journal of the Korean Pediatric Society 1995;38(12):1620-1628
No abstract available.
Blood Flow Velocity*
;
Ductus Arteriosus*
;
Humans
;
Infant, Newborn*
;
Ultrasonography*
3.Improvement of Pregnancy Rate by the Selection of Early Cleavage Embryos to 2-cell Stage in Human IVF.
Sea Hee PARK ; Bo Sun JOO ; Su Kyung LEE ; Kyung Sue KIM ; Hwa Sook MOON
Korean Journal of Fertility and Sterility 2005;32(1):47-53
OBJECTIVE: Evaluation of embryos using early cleavage to 2-cell stage has been proposed, but a critical time-point for selecting embryos is unclear. The aim of the present study is to provide a guideline including critical time-point in the selection of early cleaving embryo for the reduction of multiple pregnancies as well as the increase of pregnancy rate in human IVF. METHODS: This prospective study was performed in 116 cycles from 85 patients who underwent conventional IVF or ICSI at the infertility clinic of Good Moonhwa Hospital from January 2002 to December 2003. Early cleavage (EC) of embryos to 2-cell stage was assessed at 25 h and 27 h postinsemination/microinjection. Embryos that had early cleaved at each time point were designated as EC-1 and EC-2, respectively, while others were designated as non-early cleavage (NEC). RESULTS: At least one early cleavage embryo was observed in 54 (46.6%) for the EC-1 and 84 (72.4%) for the EC-2 of the 116 cycles assessed. Clinical pregnancy rates (PR) were significantly higher in the EC-1 group (66.7%) compared to the EC-2 group (53.6%) or the NEC group (31.2%) (p<0.05). Significant improvement of the pregnancy rate was found when at least two or more embryos were early cleaved at 25 h postinsemination or when the proportion of early cleavage embryo at 25 h postinsemination was higher than 20% (p<0.05). CONCLUSIONS: The critical time-point for the selection of early cleavage embryos with high implantation potential is more effective in 25 h postinsemination/microinjection compared to 27 h. The proportion as well as number of early cleavage embryos is also an important factor for the prediction of pregnancy outcome and the chance of multiple pregnancies. These results demonstrated that the evaluation of early cleavage embryos to 2-cell stage is an easy, simple, and objective method for the selection of good quality embryos suitable for embryo transfer.
Embryo Transfer
;
Embryonic Structures*
;
Female
;
Humans*
;
Infertility
;
Pregnancy Outcome
;
Pregnancy Rate*
;
Pregnancy*
;
Pregnancy, Multiple
;
Prospective Studies
;
Sperm Injections, Intracytoplasmic
5.Clinical Studies on Congenital Heart Diseases.
Hee Young CHUN ; Dae Churl CHUNG ; In Kyung SUNG ; Kyong Su LEE ; Du Bong LEE
Journal of the Korean Pediatric Society 1990;33(1):66-74
No abstract available.
Heart Diseases*
;
Heart*
6.Alterations of immune response in workers occupationally exposed tolead.
Cheol In RYU ; Byung Mann CHO ; Ji Ho LEE ; In Kyung HWANG ; Su Il LEE ; Don Kyoun KIM
Korean Journal of Occupational and Environmental Medicine 1991;3(2):135-144
No abstract available.
Occupations*
7.Histopathologic Study of Post-irradiation Specimen.
Hye Kyung LEE ; Kwang Min LEE ; Dong Kyu CHUNG ; Su Gon KIM
Korean Journal of Pathology 1992;26(6):593-600
The number of post-irradiated surgical specimen appears to have risen in recent years due to the increasing utiliz ation of radiotherapy for cancer patients. Radiation therapy damages cells by its effects on the deoxyribonucleic acid and the spectrum of injury ranges from acute self-limited lesion to irreversible chronic lesion. We reviewed 24 cases of post-irradiated specimen and thought that time interval is the main factor influencing the morphologic change. Within six weeks, the individual cytologic changes such as biz arre nuclei, altered nucleus/cytoplasm ratio, amphophilic and vacuolated cytoplasm are noted. Chronic injury resulting from progressive changes in the fibrovascular tissue of the radiated area occur in six months after the initial course of radiation and the vascular changes of intimal thickening and fibrosis, foamy histiocytes within media, periadventital fibrosis and chronic inflammatory cells infiltration are present. Althouhg above mentioned finding are not pathognomonic, we thought them quite constant nd reproducible characteristics of radiation injury.
8.A Clinical Study of Tsutsugamushi Disease in Children.
Jee Yeon SONG ; Ji Whan HAN ; Sung Soo HWANG ; Kyung Yil LEE ; Kyong Su LEE
Journal of the Korean Pediatric Society 1995;38(5):641-648
No abstract available.
Child*
;
Humans
;
Scrub Typhus*
9.Computed tomography of chronic or recurrent paranasal sinusitis.
Young Uk LEE ; Eun Kyung YOUN ; Young Rae LEE ; Hae Su KWON
Journal of the Korean Radiological Society 1991;27(5):607-612
No abstract available.
Sinusitis*
10.Decision Tree Approach Characterizing the Non-Examinees of Health Screening Services.
Ae Kyung LEE ; Il Su PARK ; Sun Mi LEE
Journal of Korean Society of Medical Informatics 2007;13(3):271-278
OBJECTIVE: The purpose of this study was to develop the decision tree models to classify the characteristics of those who had not undergone the health screening tests provided by the National Health Insurance Corporation. METHODS: Total of 5,102,761 subjects of health screening services in the year of 2002 was used. The data was divided into two data-sets (disease VS. non-disease group). The target variable was whether they took the health screening services. The number of input variables was 25 in total. RESULTS: The decision trees were classified into fourteen different types of non-examinees in the non-disease group and nineteen in the disease group. The ROC curve areas in the non-disease and disease groups were .761 and .714, respectively. CONCLUSION: The different types of non-examinees classified by the decision tree models would facilitate the foundation for the further analysis of individual characteristics and the effective health screening service management in future.
Data Mining
;
Decision Trees*
;
Mass Screening*
;
National Health Programs
;
ROC Curve