轉移性 骨癌의 骨走査 所見中 骨吸着 低下像에 대한 拷擦

김옥배,김영훈,최태진,김홍,김정식,전석길,우영훈 啓明大學校 醫科大學 1989 계명의대학술지 Vol.8 No.2

Radionuclide bone scans have made possible early detection of ametastatic skeletal lesions. The expected abnormality in bone scan is positive or "hot" lesion indicating increased uptake of radiotracer. However "cold" lesions or false negative bone scans have also reported in metastatic carcinoma of bone. In the past 4 years, we have observed a total of 14 cases who had positive radiographic findings but had "cold" spot or normal findings on radionuclide bone scans. Of the 14 patients, 3 had single "cold" spot, 10 had a single "cold" spot and "hot" spot(s) concurrently, and the remainder one had normal bone scan. The most common site of metastatic bone lesion as "cold" spot was spine, 8 cases. The primary site of cold bone metastasis were as followings: lung cancer 3, breast ca. 2, renal ca. 2, ovarian ca. 1, esophageal ca. 1, adrenal ca. 1, acute lymphoblastic leukemia 1, prostatic ca. 1, and unknown primary 2. The recognition of a wide spectrum in bone scan images will give useful concept in the interpretation and understanding of bone scan

X-선 전신조사에 의한 대동맥 내피세포의 변화

우영훈,손윤경,서인수 慶北大學校 醫科大學 1986 慶北醫大誌 Vol.27 No.2

저자는 대량의 방사선 전신조사후 일어나는 내피세포의 급성상해를 알아보기 위해 숫토끼에 2,000rad를 1회에 전신조사하여 각각 20분, 1시간, 3시간, 1일, 2일, 4일의 간격으로 도살한 뒤 흉부대동맥을 적출하여 광학현미경 및 주사전자현미경으로 관찰하였다. 광학현미경적 소견은 1시간 후부터 내피세포에 수포가 형성되기 시작했으며 1일군에서 가장 심한 세포질내 부종이 관찰되었고 2일군부터 차차 부종이 감소하였다. SEM소견은 20분 후부터 세포부종으로 내면의 굴곡이 나타나기 시작했으며 1일군에서 가장 심하게 나타났다. 세포질의 돌출과 microvilli형성이 같이 관찰되었으나 2일군부터 차차 부종이 감소되어 4일군은 경한 부종과 세포질 돌출 외에는 거의 정상적인 형태를 보여주었다. 이상의 연구성적과 고찰을 통해 대동맥 내피세포는 대량의 방사선 상해에 가역적 상해를 나타내며 모세혈관 내피세포보다 방사선 상해에 저항력이 강함을 알 수 있다. The author studied the acute injury of endothelial cells after whole body irradiation. Male rabbits were received a single dose of X-irradiation of 2,000 rads in the whole body from a 6 Mv linear accelerator. Animals were sacrificed at 20 minutes, 1 and 3 hours, 1, 2, and 4 days after irradiation respectively. Thoracic aortas were extracted out and examined under the light and scanning electron microscopes. The results obtained were summarized as follow: Light microscopically, edema and vesicles were appeared from 1 hour and progressed. Two days after irradiation the cellular swelling was decreased. Scanning electron microscopically, edema and microvesicles were appeared from 20 minutes and these findings were aggravated 1 day after irradiation. Microridge formation and irregular cytoplasmic protrusion were also appeared. Cellular detachment or cell death was not present. These findings were regressed two days after irradiation. The group of 4 days after irradiation showed nearly normal appearance except mild focal cellular swelling. The results suggested that the endotheial cells of thoracic aorta were more resistant that of capillary endothelial cells and high dose X-irradiation only caused reversible cell injury.

耐久消費財의 製品保證에 관한 硏究

禹泳勳 한국소비자원 1992 消費者問題硏究 Vol.- No.9

경추의 퇴행성 변화와 추간판 탈출증에 의한 이차적 소견의 자기공명 영상

주양구,우영훈 啓明大學校 醫科大學 1991 계명의대학술지 Vol.10 No.4

Magnetic resonance(MR) images of the cervical spine show anatomic detail and pathologic changes unlike any other imging modality. The authors reviewed MR images of 140 patients referred for cervical spondylosis. Fatty marrow changes were identified in 582 cervical spines(69%). The changes were independent of age and sex distribution and other degenerative changes. Disc herniations referring to extrusion of disc material beyond the posterior vertebral line were identified in 216 levels. Cord compressions referring to a concave defect in the spinal cord adjacent to a site of lesion were identified on T1 weighted image in 152 levels. Cord signal changes referring to a high signal intensity within the spinal cord on T2 weighted image were observed in 27 patients 51 levels. MR images can provide sharply defined anatomic delineation and tissue characterization of the cervical spine, and then evidence of degenerative change of cervical spine and secondary effect of cervical disc herniation may be regarded.

복막 중피종의 전산화단층촬영 소견

우영훈 대한영상의학회 1990 대한영상의학회지 Vol.26 No.2

The peritoneal mesothelioma is a rare neoplasm which arises from the peritoneal lining of the abdomen, tending to spread along the peritoneal cavity and to invade abdominal organs. authors report the CT findings of 4 patients with histologically proven peritoneal mesothelioma seen at Dongsan Medical Center, School of Medicine, Keimyung University. None of them had a history of exposure to asbestos and no clear etiologic factor could be determined in any patient. CT showed peritoneal and mesenteric thickenings in all cases, omental thickenings in 3 cases, peritoneal nodules, mesenteric masses or omental masses in 2 cases each other, bowel wall involvement in 1 case, and disproportionally small ascites in 2 cases. Distant hematogenous metastases to the liver and retroperitoneal lymph nodes were seen in 1 case. Our experience with 4 peritoneal mesotheliomas as well as a review of the recent imaging literature shows excellent correlation between computed tomography and the operito eoscopic findings.

자궁경부암의 방사선치료 후의 골반강내 변화의 전산화단층촬영 소견

우영훈 대한영상의학회 1985 대한영상의학회지 Vol.21 No.2

From July 1, 1981 to August 31, 1984, 59 patients who had radiation therapy for carcinoma of cervix had CT scanning at Department of Diagnostic Radiology, Kosin Medical College. The authors analysed the CT findings of the patients in regard to the recurrence of the disease and postradiation changes. The results are as followings; 1. The incidence of recurrence was most common in advanced stage over llb. 77% 2. Changes in pelvic cavity were as followings; Widening of presacral space 78%; Increased perirectal fat space 81%; Symmetrical thickening of perirectal fascia 97%; Fibrous conncetion between sacrum and rectum 92%; Anterior connection between rectum and perirectal fascia 47%; Increased bowel wall thickness 44%; Increased bladder wall thickness with trabeculations 51%. 3. In most patients who had CT scanning within 3 months after radiation therapy, CT did not demonstrate postradiation changes characterized by an increased pelvic fibrous and fatty tissue. 4. In 10 patients w o had postoperative radiation therapy, 8 patients show increased bowel wall thickness. 5. 30 patients with recurrent carcinoma of cervix were as followings; Pelvic tumor recurrence 90%; Parametrial and side wall extension 53%; Pelvic and paraaortic lymphadenophthy 40%; Hydronephrosis 23%' Bladder involvement 23%; Lumbar spine involvement 10%. And 1 patient shows distant metastasis to paraaortic lymph node, 1 patient to lumbar spine, and 1 patient to liver without recurrent tumor mass in pelvic cavity. 6. 2 patients showing mass without other sign in the pelvic cavity were unable to be differentiated between irradiated uterus and recurrent tumor.

복부 농양의 경피 배액술

우영훈 대한영상의학회 1990 대한영상의학회지 Vol.26 No.2

Percutaneous catheter drainage is a welcome advance in treatment of an intraabdominal abscess. Computed tomography provides anatomic details of intraabdominal abscess and permits access route of catheter to effect drainage. During past 3 years percutaneous catheter drainage in 68 patients with intraabdominal abscesses was performed at the department of diagnostic radiology, Keimyung University, School of Medicine. The results of 68 percutaneous abscess drainage procedures are summarized. In 53 cases, operation was avoided and the patients were cured. Of these, 3 cases were recurred and repeated catheter drainage was performed. partial success was achieved in 5 cases, in 3 of these patient. operation was necessary, although the patient benefited from the percutaneous drainage, and in 2 patients, general condition was improved as operation was impossible. Among 10 failures, 6 cases had fistula with small bosel loop or colon and 2 cases had multiloculated abscess.

담즙낭종 : 방사선학적 진단과 치료

김홍,우영훈,우성구,Kim, Hong,Woo, Yung-Hoon,Woo, Seong-Ku 대한영상의학회 1990 대한영상의학회지 Vol.26 No.4

The localized intraabdominal bile collection or biloma has recently been diagnosed in increased frequency due to the wide spread use of US, CT, DISIDA scintigram, and radiologically guided percutaneous needle aspiration with or without subsequent catheter drainage. The underlying cause of biloma is trauma or iatrogenic injury which includes abdominal surgery, percutaneous drainage or PTC. We experienced 20 patients with 22 biloma diagnostically confirmed by DISIDA scan, image-guided needle aspiration, percutaneous catheter drainage and/or operation. Of the 22 biloma, 7 were intrahepatic and 15 were extrahepatic, Of the 15 extrahepatic biloma, 7 were in partially hepatectomized bed, 3 were subhepatic, 3 were right subphrenic and 1 was subcapsular. We were able to determine the infectivity in 16 biloma and of these 12 biloma were found to be infected. Percutaneous drainage was performed on 20 biloma in 18 patients : by a needle aspiration with irrigation on 2 patient and by perc taneous catheter drainage on 18bilomas. Overall success rate of the drainage was 90%. Cause of the two failures were CHD stone with choledochoduodenal fistula and recurrent hemobilia with acute cholecystitis. We describe the processes in reaching the diagnosis of biloma, propensity of biloma to purulent intrahepatic or perihepatic abscess formation, and the necessity of percutaneous radiologic catheter drainage as an optimal management.

이중에너지 전산화단층촬영술을 이용한 척추해면골 골무기물함량 측정

손철호,우영훈,전석길,최태진 啓明大學校 醫科大學 1992 계명의대학술지 Vol.11 No.1

Bone mineral analysis plays an important role in both detecting and managing osteoporosis and other forms of metabolic bone disease. Dual energy quantitative computed tomography affords more accurate determintion of bone mineral density, independent of fat and water variation, and selective measurement of trabecular bone rather than integral bone provides a more sensitive means of quantifying changes in metabolic bone disease. The bone mineral density measurements of L-1 and L-2 bodies were done in 120 Korean adults, third to eight decade, by dual energy(96,125 Kvp) quantitative CT. The elliptical region of interest was located in the anterior trabecular portion of each vertebral body. Then the L*BMD〔(L-1+L-2 BMD)/2〕 is calculated. The results were as follows; The Maximum L*BMD value age group is the third decade in men, and the fourth in women. In men, the changes of L*BMD according to age demonstrate decrease. The changes of L*BMD slowly decrease until the sixth decade(4-6%), and then rapidly decrease after the sixth decade (20%). However, in women, the changes of L*BMD accroding to age show an increase in the fourth decade, thereafter the changes of L*BMD decrease, and then rapidly decrease after the fourth decade(12-26%). The L*BMD of healthy Korean adults is lower than of caucasian. We propose measurement of L*BMD as a standard bone mineral density in clinical application.

Regional Anesthesia for Abdominal Surgery in a Patient with Severe Chronic Respiratory Failure: A Case Report

이미순,우영훈,정재웅,정양훈,구본성,조성환 순천향대학교 순천향의학연구소 2021 Journal of Soonchunhyang Medical Science Vol.27 No.2

General anesthesia is associated with a risk for postoperative pulmonary complications. The risk is even higher in patients with chronic respiratory failure, and postoperative mortality rates are high. Proper perioperative anesthetic management is important in such patients. Therefore, it is essential to optimize the patient’s physical status before anesthesia and to determine the optimal anesthesia technique based on the pre-anesthesia evaluation of the patient’s pulmonary function. We successfully performed ab-dominal surgery under spinal anesthesia in a patient with severe chronic respiratory respiratory failure.