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조재호 대한영상의학회 1993 대한영상의학회지 Vol.29 No.1
Isolated heaptic tuberculous granuloma with no coexistent tuberculosis elsevhere in the body is extremely rare. We report a case of pathologically proven tuberculous granuloma in the liver followed with both IV bolus and portal CT scans. The lesion on preenhanced CT scan showed undefinable isodensity. After IV bolus injection, it showed poor enhancement with central low-density and surrounding hyperdenity due to compensatory hypervascularity of the left lobe of liver in early phase. It showed peripheral rim enhancement in late phase and in delayed phase showed relatively homogeneous but slightly decreased contract enhancement. On portal CT scan, it showed a hypodense portal defect similar to other hepatic mass lesions. During follow-up studies, it was a slowly growing mass which was more easily detectable by prtal CT scans than bolus CT scans.
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간종괴의 감별진단에 있어서 IV bolus CT의 장점
조재호 대한영상의학회 1992 대한영상의학회지 Vol.28 No.6
We performed IV bolus CT scan in 40 patients with final diagnosis of various hepatic masses in order to evaluated hemodynamic changes and changes and differentiating characters of the lesions. Preenhanced, early and late phase post enhanced, and delayed CT scans were obtained with rapid IV bolus injection of contrast materials and table sliding method for pertinent scans. In hepatomas, early enhanced CT scan directly showed hypervascular change and active viable portion of the mss and late phase CT scan showed capsular enhancement. In addition, extracapsular in vasion and post-embolization recurrence were more easily visualized. In hemangiomas, early and late enhancing types could be categorized according to the time of maximal enhancement. In metastatic liver malignancies and cholangiocarcinomas, specific findings were seen in early phase and delayed CT scans and not in convntional CT scan. In conclusion, IV bolus CT scan is a very useful CT method in demonstrating the charac eristic hemodynamic patterns and in differential diagnosis of the hepatic masses.
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조재호 대한영상의학회 1993 대한영상의학회지 Vol.29 No.2
Cardiac lymphangioma is one of the rarest, primary. benign tumor of the heart. We report a case of cardiac lymphangioma, which was diagnosed with CT and MRI in a 50 years old female, Plain chest film showed minimal enlargement and globualr shape of the heart On CT scan, abnormal fluid density mass lesion was noted within pericardial sac. The signal intensity was lower on T1-weighted inage and hgher on T2-weighted image than that of the myocardium and located along the left atrioventricuar groove. Several small low signal spots representing hemorrhage were seen within this lesion.
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철골세우기공사에서 영향요인 기반의 웹싸이클론 생산성 정보모델 및 활용에 관한 기초 연구
조재호,전재열,Cho, Jae-Ho,Chun, Jea-Youl 대한건축학회 2011 대한건축학회논문집 Vol.27 No.12
The purpose of this study is to present an impact factor-based web-cyclone productivity information model in a steel erection works. Since productivity should change according to impact factors, we need an analysis model that takes such the matter into account. This web-cyclone productivity analysis model reflects the impact factors of the projects, and hence it provides reliability to the productivity information of the relevant projects. The sensitivity analyses on each impact factor of the web-cyclone were carried out by changing the times required for the unit tasks that comprise the activities. The case data measurement from the work sites were used for the web-cyclone simulations of the steel erection and high tensioning bolt, and the differences in the productivity information were explored through a cross-comparative analysis on the web-cyclone information, expert interviews, and information of SMM(Standard Methods of Measurement). Furthermore, to make use of the web-cyclone information, this study additionally presents a case study on the development of schedule planning which considers the impact factors to the relevant projects.
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조재호 대한영상의학회 1995 대한영상의학회지 Vol.33 No.2
Purpose : To prove whether the arterioportal shunt, especially transvasal shunt is one of the cause of the hypovascular hepatocellular carcinoma. Materials and Methods : We evaluated the early phase images of table incremental dynamic CT and hepatic angiography in 20 cases of hepatocellular carcinomas with transvasal arterioportal shunt. Results : In hepatic arteriography, 18 cases were hypovascular and the remained 2 cases showed hypervascular tumor staining than surronding normal hepatic parenchyme. In the early phase dynamic CT, 18cases were hypodense(including 4 cases of focal hyperdensity in hypodense background), one was isodense and remaining one was hyperdense. Conclusion : Arterioportal shunt, especially transvasal shunt may make originally hypervasular hepatocellular carcinoma to hypovascular lesion in the early phase dynamic CT or hepatic arteriography. In attempt to differentiate hepatic masses by tumor vascularity in recently widely used table incremental dynamic CT, the vascular pattterns of the mass should be considered by close evaluation of vascular pattern of the liver, such as morphology of perfusion abnormality and arterioportal shunt, etc.
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조재호 대한영상의학회 1998 대한영상의학회지 Vol.38 No.5
난소에서 발생하는 소세포암은 주로 젊은 여자에서 드물게 발생하며 수술이나 방사선 치료, 화학치료에도 잘 반응하지 않고 재발이나 원격전이나 조기에 발생하는 예후가 매우 나쁜 종양으로 알려져 있다. 유방으로의 전이암은 전체 유방 악성 종양의 약 1%를 차지하는데 난소에서 발생한 소세포암이 유방으로 전이한 경우는 더욱 드물다. 저자들은 우측 난소의 소세포암으로 수술한지 2개월 후에 양측 유방으로 전이된 37세 여자 환자의 증례를 경험하였기에, 방사선학적 소견과 함께 보고하고자 한다. 난소의 소세포암은 골반 초음파검사 및 자기공명영상에서 낭성과 고형 성분이 혼재된 분엽성 종괴로 관찰되었고, 2개월 후에 실시한 유방촬영 및 유방초음파 검사상 양측 유방에서 경계가 좋은 다수의 고형성 결절이 관찰되었다. Small cell carcinoma of the ovary is rare and occurs primarily in young women. It has a very poorprognosis-the results of chemotheraphy and rediotherapy have been generally disappointing and early recurrence ordistant metastasis is common. Metastasis to the breast is very rare; such tomors account for about 1% of totalbreast malignancies. We describe the case of a 37-year-old-woman with muiltiple metastases to both breasts fromleft ovarian small cell carcinoma : the radiologic findings are also included. On pelvic ultrasonography and MRimaging, small cell carcinoma of the ovary was seen as a lobulationg mass lesion admixed with cystic and solidcomponents, and present in the pelvic cavity. Two months later, mammography and ultrasonography revealedrelatively well marginated multiple solid mass lesions in both breasts.
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