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조길호 대한영상의학회 1987 대한영상의학회지 Vol.23 No.1
Although many diagnostic methods have been clinically used in scrotal pathology, but almost all diagnostic modalities are inadequate in visualization of variable scrotal diseases in anatomic detail. nd non-invasive means of evaluating the anatomic image of scrotal content was needed then superficial location of the scrotums make them ideally suited for sonographic examination and improvement in resolution of diagnostic ultrasound permits in depth evalution of scrotal anatomy & pathology. Authors experienced 48 cases of scrotal diseases confirmed by surgery, needle aspiration and follow up studies from August, 1984 to July, 1986.
조길호 대한영상의학회 1987 대한영상의학회지 Vol.23 No.6
The authors experienced 49 instances with dissecting aneurysm fo aorta diagnosed by angiography from April 1981 to March 1987. We analyzed the technique of angiography, the method of procedure, and the angiographic findings. RESULTS : 1. The most common site of arterial puncture for introduction of catheter was right femoral artery, and we also used the left femoral, right and left axillary, and brachial arteries in cases in which the femoral arterial pulse is absent or feeble. 2. In a series of our 49 cases, the most common type classified by DeBakey et. al., was type III secondly type I adn the third type II. 3. Angiographic findings were identified with following frezuency : Intimal tearingm, intimal flap with opacified false lumen, compression of true lumen, aortic wall thickness over 6mm. abnormal catheter course, re-entry, and aneurysm formation.
조길호 대한영상의학회 1985 대한영상의학회지 Vol.21 No.4
The history of the radiological examination of the breast has been long, and recently the methods for examining the breast are variable: mammography, thermography, xeroradiography, ultrasonography, water-path sonography, transillumination, mammary C.T., M.R. Imaging, infra-red scanning, nuclear medicine, and galactography. Most of these methods were not proven or have not been satisfied on their clinical testing but conventional mammography has been the gold standard for diagnosis of the breast cancer and no other method has reached its effectiveness. The authors performed mammography in 488 patients with breast abnormalities who had visited to Yeung Nam University hospital from May, 1983 to December, 1984. And we analyzed the mammographic findings and diagnostic accuracy in pathologically confirmed 53 cases by operations or biopsies. The results are as follows: 1. Among 16 cases of breast malignancies, (1) the most prevalent age group is 6th decade (37.5%), followed by 5th de ade (31.3%), (2) the most common pathologic type is ductal carcinoma (93.75%), (3) the masses are larger than 2cm in 8 cases, smaller than 2cm, in 5 cases, and no visible mass is observed in 3 cases. 2. Among 37 cases of benign breast diseases, (1) the most prevalent age group is 4th & 5th decades(each 11 cases), and followed by 3rd decade(8 cases), (2) the most common disease is benign tumor (17 cases), followed by fibrocystic dysplasia (13 cases), and inflammatong disease (7 cases). (3) radiologically visible masses are observed in 16 cases and the masses are smaller than 2cm, in 11 cases. 3. The diagnostic accuracy of mammography compared with that of pathology, (1) in malignancy, the accuracy rate is 75% (12/16 cases), and 87% (32/37 cases) in benign diseases. (2) average accuracy rate is 81% (44/53 cases).
조길호 陸軍士官學校 1990 한국군사학논집 Vol.38 No.-
Born implanted into silicon exhibits the transient enhanced diffusion during RTA(Rapid Thermal Annealing), although the heating time is the order of second. According to the reports on thermal properties of boron at the low temperature less than 500 ℃, it might be interesting to investigate the effect of two-stage annealing(low temperature furnace annealing followed by high temperature RTA) of boron. 17 and 45 keV boron have been implanted into Si crystal. The two kinds of samples (FA+RTA and RTA only) have been prepared. The sheet resistivity and SIMS depth profiles of boron have been compared with each other. It is concluded that there are no differences between the boron profiles with two-stage annealing and with merely RTA. The result also shows that boron diffusion during RTA is not solely attributable to specific lattice positions of boron.
Estimation of Marshall and Olkin Model under Censored Data
조길호 통계청 2012 통계연구 Vol.17 No.2
We consider a life testing experiment in which several two-component shared parallel systems are put on test, and the test is terminated at a terminated point time. In this thesis, the maximum likelihood estimators for parameters of Marshall and Olkin model under the system level life testing are obtained. Results of comparative studies based on Monte Carlo simulation are presented.