1.A human embryo of two pairs of somites..
Young Il HWANG ; Seung Cheol KIM ; Ka Young CHANG
Korean Journal of Physical Anthropology 1992;5(1):27-36
No abstract available.
Embryonic Structures*
;
Humans*
;
Somites*
2.Clinical observation of small for gestational age.
Young Zong OH ; Cheol Hee HWANG ; Young Youn CHOI ; Young Joung WOO ; Tai Ju HWANG
Journal of the Korean Pediatric Society 1991;34(1):41-48
No abstract available.
Gestational Age*
;
Mortality
3.A Case of Encepahlocele.
Young Zong OH ; Cheol Hee HWANG ; Young Ha KIM ; Moon Kee CHO
Journal of the Korean Pediatric Society 1990;33(10):1423-1428
No abstract available.
4.An experimental study about efficacy of drain catheters.
Bum Gyu AHN ; Joon Young NHO ; Hyo Cheol WOO ; Woo Cheol HWANG ; Choong Ki PARK ; Jong Sup YOON
Journal of the Korean Radiological Society 1993;29(5):917-922
Although percutaneous abscess drainage has become and accepted alternative from of therapy for selected patients with abscess, it is well known that there are several factors in the failure of adequate drainage such as pre-and post- procedural management, technique itself, various features of abscess, and selection and application of catheters. Among these factors, we made an experiment about drain efficacy of commonly used various catheters with different viscosities of water-glycerin solution under the two different pressure gradients. The experimental values of flow rate were lower than than the calculated values. An efficacy of experimental value was 4-14%. Because the inner diameter of fittings and stopcocks was usually smaller than the inner diameter of catheters, these factors also affected the drain efficacy. Finally, we though that it will be very helpful to the treatment of patients as well as to study about the catheter drainage, if the drain efficacy of individual catheters has been notified.
Abscess
;
Catheters*
;
Drainage
;
Humans
;
Viscosity
5.Validation of a Newly Developed Equation for Estimating Serum Apolipoprotein B: Associations with Cardiovascular Disease Surrogate Markers in Koreans.
Jong Dai KIM ; You Cheol HWANG ; Hong Yup AHN ; Cheol Young PARK
Yonsei Medical Journal 2017;58(5):975-980
PURPOSE: Many clinical guidelines recommend apolipoprotein B (apoB) measurement, particularly in subjects with metabolic syndrome or type 2 diabetes. Recently, we developed a new equation to estimate serum apoB (apoBE). We validated the clinical relevance of apoBE and compared the performance of the equation with conventional lipid measurements and direct measurement of apoB. MATERIALS AND METHODS: Study subjects were recruited from patients who visited the Health Screening Center at Kangbuk Samsung Hospital between January and December 2009 for routine medical examinations (n=78125). For analysis of coronary calcium score, we recruited study subjects from the same institution between January 2007 and December 2010 (n=16493). RESULTS: apoBE was significantly correlated with serum high-sensitivity C-reactive level {r=0.18 [95% confidence interval (CI), 0.18–0.19]} in partial correlation analysis adjusted for age, sex, and body mass index. apoBE was associated with a Framingham risk score indicating more than moderate risk (10-year risk ≥10%), the presence of microalbuminuria, and the presence of coronary artery calcium in multivariate logistic regression analysis. These associations were comparable to those of directly-measured serum apoB [odds ratio per 1 SD 3.02 (2.75–3.27) vs. 2.70 (2.42–3.02) for a Framingham risk score indicating more than moderate risk, 1.31 (1.21–1.41) vs. 1.35 (1.25–1.45) for the presence of microalbuminuria, and 1.33 (1.26–1.41) vs. 1.31 (1.23–1.38) for the presence of coronary calcium score respectively]. These findings were also consistently observed in subgroup analysis for subjects with type 2 diabetes. CONCLUSION: The associations between cardiovascular surrogate markers and apoBE were comparable to those of directly-measured apoB.
Apolipoproteins B
;
Apolipoproteins*
;
Biomarkers*
;
Body Mass Index
;
Calcium
;
Cardiovascular Diseases*
;
Coronary Vessels
;
Humans
;
Logistic Models
;
Mass Screening
6.Changes in surface content and crystal structure after fluoride gel or hydroxyapatite paste application on stripped enamel.
Sang Cheol KIM ; Hyun Sil HONG ; Young Cheol HWANG
Korean Journal of Orthodontics 2008;38(6):407-415
OBJECTIVE: The aim of this study was to evaluate the remineralization of interdentally stripped teeth after fluoride gel or hydroxyapatite paste application. METHODS: After interdental stripping, 1.23% fluoride gel or 10% hydroxyapatite paste was applied three times a day, with a duration of four minutes, for a week. Scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) were used to compare the change of surface contents and crystal structures before and after the application of fluoride gel or hydroxyapatite paste. RESULTS: EDS analysis indicated that calcium contents were increased after 10% HAp paste application on stripped enamel (p < 0.01). SEM view showed that enamel surfaces in groups of 1.23% APF gel or 10% HAp paste application were smoother than those of control group, which was regarded as filling of the pore structure. And pores between crystal structures in groups treated with 1.23% APF gel or 10% HAp paste were smaller than those of control group. CONCLUSIONS: Application of APF or HAp on stripped enamel could positively influence on the surface contents or crystal structure.
Calcium
;
Dental Enamel
;
Durapatite
;
Fluorides
;
Microscopy, Electron, Scanning
;
Spectrometry, X-Ray Emission
;
Tooth
7.MR Imaging Finding of Intracranial Metastatic Melanoma: Report of Two Cases.
Eui Jong KIM ; Woo Suk CHOI ; Hee Young HWANG ; Hyun Cheol KIM
Journal of the Korean Radiological Society 1995;33(5):713-716
MR finding of melanoma shows peculiar signal intensity based on paramagnetic effect of melanin or intratumoral hemorrhage, which displays decreased T1 and T2 relaxation times in many cases. Authors report MR findings in two cases of intracranial metastatic melanoma, which is pathologically confirmed by operation.
Hemorrhage
;
Magnetic Resonance Imaging*
;
Melanins
;
Melanoma*
;
Relaxation
8.MRI of Intraspinal Cysticercosis.
Seung Cheol KIM ; Moon Hee HAN ; Kee Hyun CHANG ; Gi Seok HAN ; Hee Young HWANG
Journal of the Korean Radiological Society 1995;32(1):33-37
PURPOSE: To describe the MR features of intraspinal cysticercosis. MATERIALS AND METHODS: Medical records and MR images of four cases of intraspinal cysticercosis were retrospectively reviewed. The MR findings were described with regard to the location and signal intensity of the lesions, contrast enhancement, presence or absence of associated intracranial cysticerci, and other findings. RESULTS: There were three cases of subarachnoidal form and one case of intramedullary form. Cysticerci of subarachnoidal form in three cases were located in retromedullary space at C2 level, anterior to cord at C1 -C6 levels, and lumbosacral area, respectively. The signal intensities of the lesions were same as those of CSF. Localized arachnoidal enhancement was found in all three cases. In one case there was a large area of high signal intensity within the spinal cord on T2 weighted image suggesting either ischemia secondary to vascular compromise or inflammatory edema. All of these three cases accompanied intracranial cysticercosis. Intramedullary cysticercosis in one case was shown as a single I cm cystic lesion at C2 level, which showed hypointense signal on T1 weighted image, hyperintense signal on T2-weighted image, and signet-ring-like enhancement. This lesion did not accompany intracranial cysticerci. CONCLUSION: lntraspinal cysticercosis manifested as single or multiple cysts within either spinal cord or subarachnoid space, and were frequently associated with arachnoiditis.
Arachnoid
;
Arachnoiditis
;
Cysticercosis*
;
Edema
;
Ischemia
;
Magnetic Resonance Imaging*
;
Medical Records
;
Retrospective Studies
;
Spinal Cord
;
Subarachnoid Space
10.The efficacy of tumor markers SCC Ag, CEA and CA-125 in patients with cervical cancer.
Yong Cheol BAE ; Il Soo PARK ; Young Lae CHO ; Soon Gu HWANG
Korean Journal of Obstetrics and Gynecology 1992;35(4):533-544
No abstract available.
Humans
;
Biomarkers, Tumor*
;
Uterine Cervical Neoplasms*