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정수교 대한영상의학회 1978 대한영상의학회지 Vol.14 No.2
The authors report a case of hypervascular malignant meningioma in which, to reduce operative bleeding and facilitate operative procedure, feeder branches of the external carotid artery were preoperatively embolized with Geloam plugs. Using TORCON femoral-cerebral catheter(F6.5), we found typical malignant meningioma by right tranfemoral carotid angiography and the vessels feeding the tumor were satisfactorily embolized with Gelfoam(8mm3 in size) suspended in normal saline solution under fluoroscopic visualization. Embolizations were confirmed by follow-up angiography. We consider that preoperative embolization of hypervascular tumor is effective in preventing operative hemorrhage and make possible surgical extripation of a tumor mass. As far as we know, preoperative transfemoral embolization of malignant brain tumor has not been reported in Korea.
정수교,박용휘 대한핵의학회 1986 핵의학 분자영상 Vol.20 No.1
This study was performed to establish normal hepatoscintiangiographic (HSA) pattern of hepatic blood flow and to investigate dynamic differential HSA findings of primary and metastatic carcinomas and abscess of the liver. HSA was carried out after intravenous bolus injection of 10 mCi of Tc-99m-phytate by obtaining sequential anterior images of 1-second exposure for 16 seconds. Observations included (1) baseline study of normal hepatic blood flow pattern by correlating with contrast angiogram, (2) time sequence phasing of normal HSA, and (3) analysis of altered patterns in primary and metastatic carcinomas and abscesses of the liver. Materials consisted of 20 normal subjects, 28 primary hepatocellular carcinomas, 16 metastatic carcinomas and 7 liver abscesses. Results were: (1) Normal HSA demonstrated 3 distinct phases of arterialization (AP), of arterial hepatogram (AHP), and of portal venous hepatogram (PVHP). The means of each phase were 5.3, 6.3 and 8.3 seconds, respectively. Portal vein could be seen in all but one of 20 normal subjects. (2) Pattern changes in diseases groups were early start of AP in carcinomas and very early start of AP in abscesses. AP became prolonged in all disease group. (3) Distinction between AHP was sharp in metastasis and abscesses but unsharp in primary hepatoma. Cold area or areas became vascularized in primary hepatoma but not in abscess. Cold areas of metastasis were inhomogeneously vascularizzd in late AP and throughout AHP and became relatively vascular as PVHP began. The cold area of abscess showed rim enhancement during AH and APH. These differences in HSA pattern were very useful in differential diagnosis of the diseases studied.
정수교,양우진,손형선,신경섭,박용휘 ( Soo Kyo Chung,Woo Jin Yang,Hyung Sun Sohn,Kyung Sub Shinn,Yong Whee Bahk ) 대한핵의학회 1994 핵의학 분자영상 Vol.28 No.3
Pulmonary clearance of Tc99m DTPA(PCD) has been used for the measurement of pul-monary epithelial permeability. It, has been reported to be increased not only in variety of pul-monary diseases including ARDS, interstitial fibrosis, and smokers, but also in normal subject,s on posit.ive end expiratory pre,ssure respirator, or after exereise. It was also noted that decrease of pulmonary blood flow due to pulmonary arterial obstruction results in delayed PCD. Normal range of PCD varies with institutes. We prospectively rneasured PCD in 17 normals (5 males and 12 females) consisted of staffs and trainees in the department of radiology of Kangnam St, Marys hospital using original Bark Nebulizer (India). Age ranged from 32 to 43 years. 370 MBq of Tc99m DTPA was inhaled in supine position and supine posterior images were subsequently obtained with 1 min/frame, 64 x 64 matrix and word mode for 30min. Regions of in 1,erest. Were set on each lung, whole lungs, and upper, middle and lower thirds of right lung, respectively. Best fit regression curve was obtained by least square method from inilial 7min after peak act,ivitu on each curve and time for half clearance of maximum activity (tl/2) was calculat,ed. Mean tl/2 was 51 +- 11.2min for whole lung, There was no significant difference between tl/ 2 of right and left lungs, Initial uptake was higher in the lower third and tl/2 was shorter in the lower third than in the upper third(P<0.05). We reviewed several reports on PCD and compared our data with the others. In t,his study, faster clearance in the lower third may be due to the position imaged with or the environment the subject.s belong to, and further invest,igation is under way.
Immunohistochemical Diagnosis of Primary Renal Hemangiosarcoma in a Dog
정수교,양형석,김재훈 한국임상수의학회 2013 한국임상수의학회지 Vol.30 No.4
A 7-year-old castrated male Yorkshire Terrier was presented with a palpable intra-abdominal mass. In radiography, a large radioopaque renal mass and small abdominal mass were found on dorsal area of the abdomen. Grossly, red to brown color mass and a cystic structure (hydronephrosis) were embedded in the right kidney. Histopathologically, the mass had many irregular shaped neovascular channels lined by polygonal or oval shaped endothelial cells. These vessels and neoplastic cells had great invasive tendency to adjacent connective or fat tissues. Small abdominal mass had identical morphologic features as in renal mass. According to immunohistochemistry, the neoplastic cells in renal mass demonstrated strong positive signals for vimentin and CD31, and weak positive for von Willbrand factor. However, there were no positive reactions for cytokeratin. Based on the gross, histopathology and immunohistochemistry, this mass was diagnosed as primary renal hemangiosarcoma in a Yorkshire Terrier dog.
정수교 대한영상의학회 1982 대한영상의학회지 Vol.18 No.4
A fistulous communication between kidney and colon after trauma is rare and usually cause severe damage to kidney necessitating nephrectomy. Intrarenal aneurysm after trauma is also rare and its accurate diagnosis is important. Authors have experienced a reno-colic fistula and intrarenal aneurysm occured in a same patient after penetrating renal injury.