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- 저자 : 김학남 (검색결과 16 건)
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김학남 대한영상의학회 1988 대한영상의학회지 Vol.24 No.6
Carotid space contains the neurovascular bundle lymph nodes and the potential tract of the fistula of the second branchial cleft. We evaluated neck CT scans of 35 cases of carotid space tumors which has been proven pathologically during recent 2 year. There were 4 cases of schwannoma a case of paraganglioma a case of meningioma 6 cases of lymphoma 19 cases of metastatic node and 4 cases of branchial cleft cyst. 1. Schwannoma showed inhomogeneous contrast enhancement with somewhat hypodense areas displacing vascular bundle anterolaterally,. Paraganglioma showed strong contrast enhancement with some low density areas at the bifurcation site of common carotid artery. Meningioma revealed homogeneous contrast enhancement. 2. 88% of nodal lesions showed rimmed contrast ehancement. Metastatic nodes demonstrated irregular thick rim-enhancement pattern compared with lymphoma. 3. The second branchial cleft cyst showed hypodense cystic mass at mandibular angle region.
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김학남 대한영상의학회 1991 대한영상의학회지 Vol.27 No.2
Fibromatoses constitute a group of benign fibroblastic soft tissue tumors with a tendency for local invasion and recurrence. CT provides excellent anatomic detail of soft tissue tumors and precise location, size, and extent of the tumors. The authors evaluted 7 CT scans of 6 pathologically proven aggressive fibromatoses durting the last 4 years. Five lesions arose in the lower extremities:4 in the buttocks and 1 in the thigh. One lesion arose in the upper back. The tumors were lobulated in contour and varied in size from 3.7cm to 10.7cm. Fibromatosis tumors were usually hypodense with muscle when no contrast medium was used and hyperdense with better delineation during infusion of the contrast medium. Three patients had recurrent disease after surgical removal. Fibromatosis may infiltrate the surrounding tissues beyond the margins, indicated on CT scans and by palpation at operation at operation. Therefore the surgeon should plan a wide resection around the apparent limits of the fibromatosis.
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김학남 대한영상의학회 1990 대한영상의학회지 Vol.26 No.6
Myelography and CT scan appear to be the essential radiologic procedures for the investigation of spinal cord tumors. CT scan can be performed either with no additional procedure(plain CT) or associated with IV or intrathecal injection of contrast medium. As myelography gives a global view we prefer to start with this procedure; it is extremely helpful in providing a guide to adequate subsequent CT myelography. Authors reviewed retrospectively CT myelography findings of 41 pathologically proven spinal cord tumors during a recent 5-year period. 1. CT scan well demonstrated bone destruction, extent of tumors into epidural space or paravertebral soft tissues and also tissue composition of tumors such as fat and calcification. 2. There were some different CT findings between neurilemmoma and meningioma. In 9 cases of meningioma, calcification (3/9) and irregular margin (4/9) were shown but bone change was not seen. In 16 cases of neurilemmoma, relatively smooth margin of tumor ( 1/12*) and bone chage (4/16) were shown but calcification was not seen. *Authors excluded neurilemmomas in lumbosacral area (4/16) because tumors in this area showed poor delineation of surface margin due to crowding of cuada equina.
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김학남 대한영상의학회 1988 대한영상의학회지 Vol.24 No.1
The CT scan is a good diagnostic method in the evaluation of prostatic cancer in terms of size and con-tour invasion of adjacent organs and lymph node metastasis. We evaluated pelvic CT scan and compared its findings with the final clinical stages in 20 patients with prostate adenocarcinoma and two cases of rhabdomyosarcoma at Department of Radiology Korea Universi-ty Hospital during recent 3 years. All the 9 cases which showed distant metastases (bone lung and paraaortic lymph node) displayed the pelivic CT findings with advanced involvement (CT stage C. D) Especially 2 cases with paraaortic lym-phadenopathy also showed pelvic lymphadenopathy. the degree of pelvic involvement of prostate cancer on pelvic CT scan was closely related to its hematogeneous or extrapelvic lymphogenous dissemination In conclusion pelvic CT scan is an effective modality in the initial staging of prostate cancer.
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이재구,경기성,김학남,곽희인 한국환경농학회 1991 한국환경농학회지 Vol.10 No.1
淸州市를 貫流하는 無心川의 水質汚染 實態分析과 그 低減 方案을 摸索하기 위한 硏究의 일환으로 季節別 ['89年 11月(1차 試料), '90年 2月(2차 試料), 5月(3차 試料) 및 8月(4차 試料)]과 時間別['90年 2月(1차 試料), 5月(2차 試料)]로 採水한 試料를 分析하여 다음과 같은 結果를 얻었다. 1. 各 季節別 試料의 水溫은 1, 2, 3, 4次 試料 各各 8.6-16.2℃, 8.3-25.2℃, 18-26℃, 24-32℃ 範圍였고, 時間別 試料의 境遇는 1次, 2次 各各 0.4-16.4℃, 16-19.5℃ 範圍였다. 2. 無心川水의 pH는 年中 pH 6.5-8.5 範圍이었다. 3. 溶存酸素(DO)는 특히 3次 試料(1990년 5월 試料)의 St 13 以下에서 1ppm 以下가 되어 農業用水(許容値 : 2ppm 以上)로도 使用할 수 없는 水質이었다. 4. BOD와 COD는 대부분 無心川 本流보다 下水流入口에서 더 높았으며 특히 糞尿處理場 排出口(St 14-A)에서 BOD는 107∼680 ppm으로써 분뇨처리장 放流水의 許容値인 40ppm을 크게 超過하고 있으며, COD도 176∼635 ppm으로 매우 높았다. 또한 SS도 142-1, 900ppm으로써 糞尿處理場 放流水의 許容値인 70 ppm보다 훨씬 높은 數値였다. 5. 無心川의 水質은 本流의 調査 地點보다는 下水流入口에서, 그리고 上流보다는 下流에서 크게 惡化되고 있어 下水終末處理施設의 時急한 設置運營과 糞尿處理施設의 擴充이 切實히 要望된다. In order to disclose the contamination of the Mushim-Cheon by pollutants and to establish the countermeasures, the water samples collected in November of 1989(lst sample), February(2nd), May(3rd) and August of 1990(4th) were analyzed to obtain the following results : 1. The water temperatures of the seasonal samples ranged from 8.6 to 16.2, 8.3 to 25.2, 18 to 26, and 24 to 32℃, in the 1st, 2nd , 3rd, and 4th samples, respectively. 2. The pHs of all the samples ranged from 6.5 to 8.5. 3. In the 3rd sample, especially, DO was observed to fall down to 0.8 ppm at the downstream of St 13, which is not allowed even for agricultural use. 4. The BOD and COD values in sewers were much higher than those in the main stream, and especially the values of St 14-A reached 107-608 and 176-635 ppm, respectively, which far exceeded the limit of 40 ppm, the allowed value for the discharges from the disposal facilities. The SS value of St 14A ranged from 142 to 1, 900 ppm, which far exceeded the limit of 70 ppm, the allowed value for the discharges from the disposal facilities. 5. It turned out that the water quality of the Mushim-Cheon flowing through Cheong Ju was more worsened at sewers than the main stream, and at the downstream than the upstream of the surveyed area. Accordingly, the sewage disposal plant and the expansion of the disposal facilities are urgently needed.
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