1.A comparative electromyographic study of the masseter and anterior temporal muscles during masticatory function of subjects with natural teeth and complete denture wearers.
Seung Hyun CHOI ; Boo Byung CHOI ; Dae Gyun CHOI
The Journal of Korean Academy of Prosthodontics 1991;29(1):53-71
No abstract available.
Denture, Complete*
;
Temporal Muscle*
;
Tooth*
2.Diagnostic value of barium enema in acute appendicitis.
Hyun Il HWANG ; Kyung Hyun CHOI ; Byung Hee CHUN
Journal of the Korean Surgical Society 1992;42(2):216-223
No abstract available.
Appendicitis*
;
Barium*
;
Enema*
3.Diagnostic value of barium enema in acute appendicitis.
Hyun Il HWANG ; Kyung Hyun CHOI ; Byung Hee CHUN
Journal of the Korean Surgical Society 1992;42(2):216-223
No abstract available.
Appendicitis*
;
Barium*
;
Enema*
4.Reconstruction of the foot by first web space island flap.
Hyun Ho KIM ; Byung Il PARK ; Jai Koo CHOI
Journal of the Korean Society of Plastic and Reconstructive Surgeons 1992;19(2):273-280
No abstract available.
Foot*
5.The radiographic findings of cerebello-pontine angle lesions
Young Hwan JUN ; Byung Ihn CHOI ; Kee Hyun CHANG
Journal of the Korean Radiological Society 1983;19(2):314-323
Thirty-five cerebello-pontine angle lesions were diagnosed with simple skull X-ray, CT, and angiography atSeoul National University Hospital from Sept. 1978 through Aug. 1982. The radiographic findings were analysed withemphasis on the differential points of CT among the major three cerebello-pontine angle tumors; acousticneurinoma, meningioma and epidermoid. The results are as follows; 1. Among the 35 cases of cerebello-pontine anglelesions, 19 cases were acoustic neurinoma. 4 cases miningioma, 4 cases epidermoid, 2 cases metastasis, 1 caseschoroid plexus papilloma, 1 case arteriovenous malformation, and 3 cases intra-axial posterior fossa tumors. 2.The characteristic radiographic findings of acoustic neurinoma were windening of internal auditory canal, petrousbone erosion, posterior extension of tumor at the level of internal autidory canal, hypo or isodense mass onpre-contrast CT with high enhancement after intravenous contrast infusion, and cystic change within the mass. 3.Meningioma shows anterior extenstion of the lesion at the level of internal auditory canal, broad base and obtuseangle sign of the lesion with petrous bone, hyperdense mass on precontrast CT. with highly homogeneous enhancementafter intravenous contrast infusion. 4. Epidermoid characteristically shows hypodense mass on precontrast CT withno change after intravenous contrast infusion. 5. The differential points of the major 3 cerebello-pontine tumorswere bone change, mass location, attenuation , degree of attachment to petrous bone, and cystic change.
Angiography
;
Arteriovenous Malformations
;
Infratentorial Neoplasms
;
Meningioma
;
Neoplasm Metastasis
;
Neuroma, Acoustic
;
Papilloma
;
Petrous Bone
;
Skull
6.Mirizzi syndrome: one case report
Joon Koo HAN ; Byung Ihn CHOI ; Yong Hyun PARK
Journal of the Korean Radiological Society 1984;20(2):335-338
Mirizzi syndrom is a rare disorder characterized by obstruction of common hepatic duct due to impacted gallbladder neck or dystic duct stone and is an uncommon cause of obstructive jaundice. Authors experienced one case of Mirizzi syndrome mimicked lobulated intraductal tumor.
Gallbladder
;
Hepatic Duct, Common
;
Jaundice, Obstructive
;
Mirizzi Syndrome
;
Neck
7.Computed tomography of gliomas: as a possible aid to histopathological grading
Young Hi CHOI ; Byung Ihn CHOI ; Kee Hyun CHANG ; Je Geun CHI
Journal of the Korean Radiological Society 1983;19(4):659-670
It is well known that the cell type and histopathological grading of gliomas correlate well with clinicalcourse and prognosis. Therefore, it is tempting to set certain criteria that could predict the histopathologiccharacteristics of the gliomas before the surgical intervention. With a total of 56 cases of gliomas which wereverified histopathologically in Seoul National University Hospital between July 1978 and May 1983, a statisticalanalysis of the computed tomographic findings was done with the particular emphasis on the correlation withhistopatholoigcal features. The results are as follows; 1. The calcification is observed in 27 cases (48.2%) intotal: in 20 cases (62.5%) among low grade group, in 6 cases (46.1%) among high grade group and in 1 case (9.1%)among glioblastoma multiformed group respectively. 2. The mass effect, especially surrounding low densitycorrelates well with the grade of malignancy. 3. The contrast enhancement is observed in 43 cases (76.8%). Thepattern of enhancement provides clues for the assessment of cell type and grade with fair degree of reliability.Among low grade group, 10 cases (31.3%) show no enhancement and 10 cases show solid enhancement. Among high gradegroup, 6 cases (46.8%) show solid enhancement and nodular or ring enhancement are not observed. Among glioblastomamlultiform group, 8 cases (72.7%) show characteristic thick irregular ring enhancement. 4. Plain CT densities arenot useful in differentiating each group in statistically significant level. 5. Neither the margin of the mass northe degree of contrast enhancement contributes for the differentiation of each group. 6. Summarizing the abovementioned findings it is concluded that CT is very helpful in differentiating the gliomas with regard tohistopathological cell type and the grade of malignancy as well.
Glioblastoma
;
Glioma
;
Prognosis
;
Seoul
8.Experience of Microsurgery Using Dorsalis Pedis Artery
Soo Kyoon RAH ; Chang Uk CHOI ; Hak Hyun KIM ; Wan Surk CHOI ; Byung Chun JEON
The Journal of the Korean Orthopaedic Association 1981;16(3):731-738
Since the introduction of surgical microscope in microvesael surgery by Jacobson and Suarez in 1960, many surgeons have succeeded replantation, transplantation of composite segment of tissues so called free fiap-free bone graft and toe to hand transfer. McCraw & Furlow reported successfully transfered dorsal foot flap using dorsalis pedis artery in 1975 and Cobett transfered great toe to band for reconstruction of the amputated thunb. The authors experienced six cases of microsurgery using dorsalis pedis artery durig the recent two years in the department of Orthopaedic surgery of Soon Chun Hyang College and results in this paper. 1. Four cases out of six were dorsalis pedis free flap, one case was second toe to thumb and tbe other one was reconstruction of an amputated thumb in one stage using iliac bone graft and dorsalis pedis flap. 2. One case out of four cases of dorsalis pedis free flap was performed for reconstruction of contracted first web and the other cases were performed for foot. 3. Five cases out of six were successfully transfeed, one case which was toe to thumb was failed. The cause. of fail was probably due to post-operative hematoma. 4. Composite tissue using dorsalis pedis artery is one of the good donor site for composite tissue transfer for not only skin defect and scar contracture of the hand and foot but also reconstruction of the amputated fingers because it has several advantages; an acceptable thickness, a constant arterial supply, venous drainage through the saphenous system, and constant innervation through the terminal branches of the superficial and deep peroneal nerve.
Arteries
;
Cicatrix
;
Contracture
;
Drainage
;
Fingers
;
Foot
;
Free Tissue Flaps
;
Hand
;
Hematoma
;
Humans
;
Microsurgery
;
Peroneal Nerve
;
Replantation
;
Skin
;
Surgeons
;
Thumb
;
Tissue Donors
;
Toes
;
Transplants
9.EMERGENT EXPLORATION AFTER FREE FLAP SURGERY: A REVIEW OF 105 CONSECUTIVE CASES.
Sang Hyun WOO ; Byung Cheol CHOI ; Jae Ho JEONG ; Jung Hyun SEUL
Journal of the Korean Society of Plastic and Reconstructive Surgeons 1997;24(4):826-838
No abstract available.
Free Tissue Flaps*
10.The Effects of Dimethly Sulfoxide and Sodium thiosulfate for the Prevention of Tissue Necrosis due to Extravasation of Mitomycin-C.
Sang Hyun WOO ; Byung Cheol CHOI ; Ki Hyung KIM ; Jung Hyun SEUL ; Tae Eun JUNG
Yeungnam University Journal of Medicine 1996;13(2):243-250
Extravasation of toxic chemotherapeutic 'agents cause severe skin ulceration and necrosis which often need secondary surgical intervention. Still, there were not established antidote agent in case of extravasation with mitomycin-c. Dimethyl sulfoxide is known as an effective chemical scavenger of toxic hydroxyl free radical and sodium thiosulfate also was demonstrated significant protector from mitomycin-c induced ulceration by a few experimental studies. Author investigated necrotic area of mitomycin-c injected site and compare to the effectiveness of topical treatment with dimethyl sulfoxide and intradermal injection of sodium thiosulfate according to starting times, forty five mice were divided into 3 groups. Control group(n=5) had no treatment after subcutaneous injection of mitomycin-c. Experimental group I and 11 were 20 mice treated dimethyl sulfoxide and sodium.
Animals
;
Dimethyl Sulfoxide
;
Injections, Intradermal
;
Injections, Subcutaneous
;
Mice
;
Mitomycin*
;
Necrosis*
;
Skin Ulcer
;
Sodium*
;
Ulcer