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양익,정수영,박해정,이열,전노원,노정우,Yang, Ik,Chung, Soo-Young,Park, Hai-Jung,Lee, Yul,Chun, Rho-Won,Noh, Jung-Woo 대한영상의학회 1995 대한영상의학회지 Vol.33 No.5
발작성 야간혈색소뇨증은 매우 드문 용혈성 빈혈로 MR 소견이 보고되기전까지는 특징적인 방사선학적 소견에 대하여 별로 알려져 있지 않았다. 그러나 최근 MR과 CT의 특 징적 소견이 외국 문헌에는 보고된 바 있으나 국내 보고는 없어 MR 및 CT 소견을 보고한 다. 암적색 혈뇨와 만성 빈혈증상으로 반복 수혈후 발작성 야간혈색소뇨증으로 진단된 61세 여자 환자로 복부 MR의 T1, T2 강조영상에서 신피질은 신수질과 비교해 특징적인 저신호 강도를 보였으며 이러한 저신호강도 부위는 조영제를 사용치 않은 CT에서 신피질의 증가된 음영과 일치하였다. 다량 수혈에 의한 혈철증으로 간은 MR에서 저신호강도를 보였고 비장 은 정상이었으며 또한 조영전 CT 상 비장과 비교해 증가된 간 음영을 볼 수 있었다. Paroxysmal nocturnal hemoglobinuria(PNH) is a rare, acquired disease involving multiple hematopoietic celllines. Characteristics of PNH are intrinsic hemolytic anemia, iron deficiency anemia and venous thrombosis. Wereport a case of PNH with characterostoc MR and CT findings. The signal intensity of renal cortex was lower thanthat of medulla on both T1- and T2- weighted MR imaging. On T2 weighted MR images, the liver showed very lowsignal intensity but the signal intensity of the spleen was normal. On precontrast CT the attenuation of renalcortex was higher than that of renal medulla and the attenuation of liver was higher than that of the spleen.These findings of MR imaging and CT were the result from the deposition of hemosiderin in the cells of proximalconvoluted tubules and transfusional hemosiderosis of liver.
양익,고영태,이동호,임재훈,최우석,Yang, Ik,Ko, Young-Tae,Lee, Dong-Ho,Lim, Jae-Hoon,Choi, Woo-Suk 대한영상의학회 1992 대한영상의학회지 Vol.28 No.1
A case of xanthogranulomatious oophoritis is presented in a patient who had a 3-month history of intrapelvic mass protuding into the vagina. The sonographic findings are a well defined mass shadowing lower echogenicity than the echo of hte uterus at hte posteosuperior aspect of the uterus. The CT findings are an enhancing soid mass with central necrosis containing a multiseptated cystic component
만성 탈구 또는 아탈구를 초래한 고관절의 변화 : 전산화 단층촬영과 단순 필름의 비 교 분석
양익,류경남,이선화,최우석,이일성,Yang, Ik,Ryu, Kyung-Nam,Lee, Sun-Wha,Choi, Woo-Suk,Lee, Eil-Seong 대한영상의학회 1993 대한영상의학회지 Vol.29 No.3
Secondary osteoarthritis of the hip jjoints is a common disease and is frequently followed by chronic sublexation and dislocation. Twenty four cases of the secondary osteoarthritis associated with chronic subluxation and dislocation of the hip joints were evaluated with plain radiography and computed tomotraphy. We retrospectively analyzed 1) the ossification and calcification of the acetabular labrum, 2) the thickeness of the quadrilateral plate of the ilium, and 3) anteroposterior diameter of the acetabulum. The changes of the hip joints in subluxation (n=14) revealed ossification of the acetabular labrum in 12 cases (86%), thickening of the quadriateral plate of the ilium in 11 cases (78%) but anteroposterior diameter of the acetabulum was not changed The changes of the hip joints in dislocation (n=10) revealed no evidence of the ossification of the acetabular labrum, thickening of the quadrilateral plate of the ilium in 10 cases (100%) and decreased anteroposterior diameter of the acetabulum. We conclude that CT findings of subluxation and dislocation of the hip joints can be helpful in the evaluation of the secondary osteoarthritis of the hip joints.
뇌하수체 선종의 자기공명영상 소견 : 조영증강 형태의 분석
양익,최우석,신인수,류경남,윤엽,Yang, Ik,Choi, Woo-Suk,Shin, In-Soo,Ryu, Kyung-Nam,Yoon, Yup 대한영상의학회 1993 대한영상의학회지 Vol.29 No.6
The magnetic resonance images (MRI) of 30 patients with surgically or biochemically confirmed pituitary adenomas (20 macroadenomas, 10 microadenomas) were retrospectively evaluated. Ten patients had hyperprolactinemia, another eight had acromegaly, another eight had nonfunctioning adenomal and four had Cushing disease. The examinations were performed at a 1.5-T superconducting MR system using a multisection spin-echo technique with 3mm-thick sections and a 256x224 matrix. T1 weighted sagittal and coronal images were obtained before and within 30 minutes after the administration of Gd-DTPA (0.1mmol/kg) Analysis of the MRI was focused on the signal intensity and enhamcement patterns of the pituitary adenoma before and after Gd-DTPA administration. Compared with endocrinologic diagnosis, macroadenoma showed heterogeneous enhacement in 55%, rim enhancement in 35% and homogeneous enhancement in 10%, Conclusively, the enhancement patterns of the pituitary adenoma did not correlate with the subtypes made according to hormone production.
양익,성동욱,윤엽,성낙관,Yang, Ik,Sung, Dong-Wook,Yoon, Yup,Sung, Nak-Kwan 대한영상의학회 1992 대한영상의학회지 Vol.28 No.3
Chest CT is the most useful modality in the diagnosis of primary lung cancer, particularly in patients with recurrent pneumonia which are resistant to antibiotic therapy and in high risk age groups for cancer. The purpose of this examination is to assess the usefulness of CT in pneumonic types of lung cancer. The authors retrospectively analyzed 15 histologically proven cases of pneumonic type lung cancer, which had no evidence of primary lung mass, mediastinal lymphadenopathy or other metastatic lesion on plain chest radiography. On CT scan, a primary lung mass was identified in 13 patients(87%), bronchial obstruction was identified in 12 patients(80%), and metastatic foci was found in the bone(one patient), liver(one patient), and spleen(one patient). In Conclusion, CT scan is a useful method to detect the mediastinal lymphadenopathy or pulmonary mass and also should be the initial radiolographic procedure for diagnosis of lung cancer in patients with recurrent pneumonia on imple chest radiography.
양익,이동호,고영태,임재훈,임주원,Yang, Ik,Lee, Dong-Ho,Ko, Young-Tae,Lim, Jae-Hoon,Lim, Joo-Won 대한영상의학회 1992 대한영상의학회지 Vol.28 No.4
Syphilitic involvement of the stomach often takes the appearance of neoplastic conditions. We describe the radiological findings of syphilitic gastritis. A 36-year-old man was diagnosed with gastric cancer by upper GI and CT, but syphilitic gastritis was confirmed by endoscopy and upper GI series performed after penicillin therapy. We report a case of syphilitic gastritis presented as advanced stomach cancer by clinical, endoscopic and radiological study.
도세포종의 방사선학적 진단 : 경피 경간 문정맥 , 췌정맥 삽관술 및 홀몬 분석
양익,윤엽,고영태,임주원,임재훈,Yang, Ik,Yoon, Yup,Ko, Young-Tae,Lim, Joo-Won,Lim, Jae-Hoon 대한영상의학회 1993 대한영상의학회지 Vol.29 No.4
Two patients with clinical and biochemical evidences of islet cell hyperfunction underwent percutaneous transhepatic portal and pancreatic vein catheterization and hormone assays. Local step-ups of insulin level in the protal venous system, found in two patients with insulinoma, corresponded to tumor sites at surgery. One patient had single insulinoma and the other had malignant insulinoma and liver metastasis. Percutaneous transhepatic protal and pancreatic vein catheterization with measurement of radioimmunoactive insulin concentration is a safe and reliable method, and may play an important role in the localization of adenoma in patients with hyperinsulinism.