• Proceedings of the KSMRM Conference
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• 2002.11a
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• pp.136-136
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• 2002

목적： 골반 자기공명영상의 치골 결합부가 보이는 횡단면에서 특징적인 H-모양을 보이는 질의 H-모양 횡축과 종축이 만나는 내측 각도를 질각이라고 하는데, 이 질각은 질과 인접한 자궁이나 골반부 구조물의 변형이 있을 경우 그 각도가 달라질 수 있다. 한국 정상 성인 여성인 질각 평균치를 연령별로 구하는 것이 본 연구의 목적이다. 대상 및 방법： 최근 8개월간 본원에 내원하여 골반 자기공명영상을 시행한 환자 중에서, 자궁과 질을 포함한 골반부에 특별한 질병을 가지고 있지 않은 50명의 성인 환자를 대상으로 하였다 환자의 연령은 21-84세(평균 54세)였다. 44명은 출산의 경험이 있었는데, 이 중 28명은 질식 분만, 14명은 제왕 절개술, 2명은 질식 분만과 제왕 절개술 모두를 경험했다 치골 결합부가 보이는 자기공명영상 횡단면에서 질각의 유무와 모양을 관찰하고, H-모양의 좌우측 질각을 측정하였다. 질각의 평균값을 산출하고, T-test를 이용하여 양측 질각의 차이 및 환자의 연령과 출산 경로에 따른 질각의 차이를 통계적으로 검증하였다.

• 대한핵의학회:학술대회논문집
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• 1992.06a
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• pp.181.1-181.1
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• 1992

• The Journal of the Korean bone and joint tumor society
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• v.6 no.2
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• pp.92-97
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• 2000

Desmoplastic fibroma is a rare primary tumor of bone that histologically and biologically mimics the extra-abdominal desmoid tumor of soft tissue. This report is dealt with two cases of desmoplastic fibroma occurring in a 22-year-old male, scapular lesion and 34-year-old male, pubic lesion. Radiologically, the tumors were lucent and expansile lesions. Histologically, they contained slender spindle cells and various amounts of collagen fibers. Radical excision was done on both cases and no recurrence was reported. Because of its rarity, we report two cases of desmoplastic fibroma.

• Childhood Kidney Diseases
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• v.6 no.1
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• pp.68-74
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• 2002

Purpose: Suprapubic bladder aspiration(SBA) of urine is the most reliable method to obtain urine avoiding contamination in non-toilet trained infants. Ultrasonography is a useful tool for guiding the anatomic location as well as for direct visualization during procedure. We evaluated the success rate and complication of ultrasound(US) assisted SBA Methods. Sixty infants who visited Ewha Womans University Mokdong Hospital, with suspected urinary tract infection were randomly divided into the US assisted (n=32) and blind SBA(control, n=28) group. In US assisted SBA group, the anteroposterior(AP), transverse, and sagittal diameters and the volume of the bladder were measured. In the blind SBA group, urine was blindly aspirated when the urinary bladder was palpated at the suprapubic area. The rate of successful urine aspiration, the number of attempts until successful aspiration, aspirated urine volume were compared between the two groups. Results: The success rate was $100\%$(32/32) in the US assisted group, which was significantly higher than $85.7\%$(24/28) of the control group (P<0.05). The aspirated urine volume in the US assisted group was $7.4{\pm}3.7\;mL$, which was significantly higher than $4.5{\pm}3.4\;mL$ of the control group (P<0.05), The diameters and volume of bladder in successful aspiration were $2.1{\pm}0.7\;cm$ in AP diameter, $3.1{\pm}0.6\;cm$ in transverse diameter, $4.2{\pm}1.0\;cm$ in sagittal diameter and $15.2{\pm}10.4\;mL$ in volume, which were significantly higher than those ($1.7{\pm}0.3\;cm,\;1.7{\pm}0.3\;cm,\;1.8{\pm}0.7\;cm,\;2.4{\pm]0.6\;cm,\;3.9{\pm}2.5$) of the control group (P<0.05) The correlations between the AP(r=0.78), transverse (r=0.72), sagittal(r=0.91) diameter and bladder volume were significant (P<0.05). SBA was $100\%$ successful in the AP diameter >3 cm, transverse diameter >4 cm, depth >4 cm and bladder volume >5 mL. Conclusion: US assistance can significantly improve the success rate of SBA in infant with suspected urinary tract infection. (J Korean Soc Pediatr Nephrol 2002 ; 6 : 68-74)

• Proceedings of the Korean Fiber Society Conference
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• 2002.04a
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• pp.381-383
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• 2002

폴리술폰은 내화학성, 내멸균성, 내가수분해성, 내열성, 강인한 기계적 성질, 내충격성이 우수한 재료로 치수정밀도와 치수안정성이 매우 뛰어난 고분자이다 이런 뛰어난 특성으로 인해 필터 플레이트, 한외여과장치(기체 분리막), 전기ㆍ전자공업분야(전기콘센트소재), 의료용 분야(인공치골, 인공신장기용 박막, 고온에서의 멸균을 필요로 하는 수술용 받침대, 혈액투석용 필터 등) 등 여러 분야에서 이용되고 있다. (중략)

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.5
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• pp.2197-2202
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• 2011

In this study, we propose a new short dental implant and investigate its bio-mechanical characteristics by using three dimensional finite element analyses. The proposed dental implant has the central cavity which can be integrated with the core of cancellous bone remained by trepanning drill. We take the Bicon short implant as a reference model for studying the effects according to the shape of cavity. The parametric finite element model using ANSYS APDL has been built to determine which length, diameter and thread of central cavity would be effective to dissipate stress. The reduction of undesirable stress in adjacent bone which can suppress bone defects and the eventual failure of implants. The numerical results shows that the cavity of well-determined shape has the beneficial effects on reducing the bone absorption in cancellous bone.

• Journal of Auto-vehicle Safety Association
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• v.3 no.2
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• pp.34-41
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• 2011

Side collisions (or side crash) account for 51.6% of all car to car accidents occurred in 2010. It is necessary to analyze those vehicles' structure deformation and passengers' injuries in the side collisions. A moving barrier (950kg) is currently used in the KNCAP side impact test. However, in order to enhance a passengers' safety in the side collisions, we introduce an AE-MDB (1500kg) which provides more severe conditions for this test. In this study, the test results using both barriers are compared and analyzed.

• Korean Journal of Computational Design and Engineering
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• v.15 no.3
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• pp.234-242
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• 2010

3D CAD technology has been extended to a medical area including dental clinic beyond industrial design. The 2D images obtained by CT(Computerized Tomography) and MRI(Magnetic Resonance Imaging) are not intuitive, and thus the volume rendering technique, which transforms 2D data into 3D anatomic information, has been in practical use. This paper has focused on a method and its implementation for forming 3D geometric surface model from laminated CT images of the pubis. The implemented system could support a dental clinic to observe and examine the status of a patient's pubis before implant surgery. The supplement of 3D implant model would help dental surgeons settle operation plans more safely and confidently. It also would be utilized with teaching materials for a practice and training.

• The Korean Journal of Zoology
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• v.33 no.4
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• pp.402-410
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• 1990

The osteological characteristics of Mudhopper, P. cantonensis, was described and compared with its related species, Tridentiger obscurus, Synechogobius hasta and Odontogobius platycephala The skeletal structures of P. canionensis were distinctly different from those of other species in many respects: the form of the neurocranium, the pterygoid, the radial and the parhypural, the fused state between ribs and hypomerals. However, in respect of having five branchiostegals, two epurals and hypomerals, P. cantonensis were in common with T obscurus, S. hasia and O. platycephala.

• Journal of Yeungnam Medical Science
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• v.5 no.2
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• pp.213-219
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• 1988

In the geriatric patient with COPD, incidence of postoperative pulmonary complication is higher than young patient. Therefore, some anesthesiologists preferred spinal anesthesia to general anesthesia for surgery of the perineum, lower extrimities, and pelvic extra peritoneal organs. But, during spinal anesthesia, the same careful observation is requiered as during general anesthesia. We experienced a case of the convulsive seizure at about 1 hour after spinal anesthesia for open prostatectomy in a 76-year-old male patient wit COPD. It was suspected that his convulsive seizure be resulted from hypercapnea combined with hypoxia following upper airway obstruction. This patient was treated successfully by ultrashort acting barbiturate and controlled ventilation.