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신우석(W.S.Shin),이철원(C.W.Lee),진상호(S.H.Jin),권순익(S.I.Kwon),강남희(N.H.Kang),김형동(H.D.Kim),이흥배(H.B.Lee),이재기(J.G.Lee),최규하(G.H.Ghoe) 전력전자학회 1997 전력전자학술대회 논문집 Vol.1997 No.-
This paper describes an study electric injection system for diesel engines. It is needed effective fuel injection which controls the solenoid valve of fuel pump. To solve this, this paper proposes DCC-PWM method which can realize fast reply and low holding current for solenoid valve on/off. For the proposed design method, simulation tools of ACSL are used to analyze the system. And the single-chip microcomputer is used to reduce the size of controller and to improve flexibility. And the system's validity can be verified through the experimental results.
뇌 실질내 기생한 Sparganosis Mansoni의 현미경 수술
김수천,김형동,심재홍,홍숙희 대한신경외과학회 1981 Journal of Korean neurosurgical society Vol.10 No.2
Clinical experience with a case of sparganosis invading the intracerebral region =as reported with review of the literatures. A 17-year-old male who had a history of having eaten raw snakes and frogs, had suffered from uncontrolled seizure with medication. This seizure started from right thumb and then spreaded whole body. C-T scan revealed ring form enhancement in the left frontal area. Left frontoparietal craniotomy was performed and a live Sparganum mansoni was successfully removed from intracerebral region using surgical microscope. This is very rare case in which a live Sparganum Mansoni was removed from intracerebral region.
김형동,전용문,옥영철,이규웅 대한신경외과학회 1977 Journal of Korean neurosurgical society Vol.6 No.1
Intracranial gliomas were the most common tumor in the central nervous system. They are purely infiltrating tumors except ependymomas, so that the surgical management of glioma without racurrence was very difficult even if total enucleation of growth zone. Recently the chemotherapy and radiation therapy have been studied for intracranial tumors, especially glioblastoma and medulloblastoma, as well as preoperative shunt operation in secondary hydrocephalus due to tumors. The astrocytoma and glioblastoma were occurred commonly in all intracranial gliomas. We analyzed 47 cases of intracranial gliomas which was histologically verified after operation at the National Medical Center from Jan. 1971 to May 1977.
소뇌에 발생한 전이성 종양 1예 : Case Report
최휴진,김형동,심재홍 대한신경외과학회 1982 Journal of Korean neurosurgical society Vol.11 No.1
A case of metastatic cerebellar tumor associated with hydrocephalus is reported. Computerized tomography scans revealed a markedly obstructive hydrocephalus and relative well demarcated low density in the right cerebellar hemisphere. The tumor was totally removed, containing about 35cc of yellowish cystic fluid and scanty solid mass.
박중겸,김형동,전용문,옥영철,이규웅 대한신경외과학회 1976 Journal of Korean neurosurgical society Vol.5 No.2
Cerebral cysticercosis is, unfortunately, a frequent disease in Korea. The clinical symptoms, however resembled that of .space occufying lesion of the brain, are dependent on the location, number of parasite, intensity of infestation and susceptibility of the host. Palpation of the subcutaneons nodule, eosinophilia in peripheral blood, pleocytosis combined. with increased protein in CSF, specific localizng signs, calcification on plain skull (4.5%) and filling defect on Conray ventriculography or pneumoventriculography, all of them are helpful in diagnosis of cerebral cysticercosis. Medical treatment of cysticercosis is not satisfiable now. Some neurosurgen insisted on they are able to get a good result from surgical removal of the cyst and shunt operation. We have experienced a case of cerebral cysticercosis which had invaded cerebral cortex multitudinously and the third ventricle. So, we discussed this case with brief review of literature.
옥영철,김형동,이규웅 中央醫學社 1976 中央醫學 Vol.31 No.6
Tumors of the central nervous system are not rare. Brain tumors cannot be intelligently discussed as a homogeneous entity. Their manner of presentation, their management and their prognosis depend upon their malignancy and the area of brain involved. They are more common than tumors of the stomach and less common than tumors of the breast. Because of their rather high incidence and dismal prognosis much effort has been devoted to controlling these tumors. We analyzed 100 cases of brain tumor which was histologically verified after operation at the National Medical Center from Jan. 1972 to Sep. 1976. The brain tumors are included 39 cases of glioma, 15 ,cases of meningioma, 12 cases of pituitary adenoma, 9 cases of acoustic neurinoma, 6 cases of craniopharyngioma, 3 cases of metastatic Iesion, 3 cases of blood vessel tumor and 13 cases of miscellaneous tumor. The tumors are occupied on the supratentorial region in 71 cases and infratentorial region in 29 cases, and occurred in midline region in 34 cases, right and left side in each 31 cases and both side in 4 cases. 100 cases comprised 69 Males and 31 females with a ratio of 2.2 to 1. The age ranged from 3 years to 59 years with the highest incidence at second deca des, but the age incidence was evenly distributed at different age groups. They complained of headache (94 cases), nausea and vomiting (58 cases) and papilledema (58 cases), so called _symptoms trail of the brain tumor, and other eye complaints (56 cases) with 6 month-to 3 year-duration of symptoms in about half cases of the brain tumors. Calcification was showed on the plain skull x-ray films in 10 cases; craniopharyngioma 3/6 cases, glioma 3/39 cases, meningioma 3/6 cases, pinealoma and choroid plexus papilloma in each one case. After question of the brain-tumors, the symptoms are much irnptoved in'I 1 cases, more improved in 34 cases, equivocal in 30 cases and more aggravated in 13 cases, and 11 cases are fatal and 14 cases are recurrent. - 35 cases are received radiation therapy and/or chemotherapy after operation.