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저널/프로시딩 상세정보

권호별목차 / 소장처보기

H : 소장처정보

T : 목차정보

대한방사선의학회지 = Journal of the Korean Radiological Soc...대한방사선의학회지 = Journal of the Korean Radiological Society 20건

  1. [국내논문]   급성 허혈성 뇌경색의 혈전 용해 치료 : 동맥내 유로키나제 투여와 정맥내 헤파린, 유로키나제 투여시의 비교 연구   피인용횟수: 1

    고기영 (울산의대 중앙병원 진단방사선과학교실)
    대한방사선의학회지 = Journal of the Korean Radiological Society v.35 no.1 ,pp. 1 - 11 , 1996 , 0301-2867 ,

    초록

    Purpose : To evaluate the efficacy and limitation of intra-arterial urokinase (IAUK) infusion for treatment of acute cerebral stroke. Materials and Methods : Twenty-seven acute cerebral stroke patients treated with IAUK infusion within six hours of stroke onset were reviewed. All patients showed normal initial brain findings on CT. In 21 patients, urokinase(5-15 $\times$ $10^5$ IU) was administered through a microcatheter placed into or proximal to occluded segment. Mechanical disruption of thrombus by guidewire was performed in 17 patients. Angiographic and clinical responses and complications after IAUK infusion, were evaluated and the results were compared with those of intravenous heparin(N=19) and urokinase infusion(n=19). Results : Complete or partial angiographic recanalization of occluded segment was found in 18 patients(67%), and neurologic improvement was followed in 14patients(52%). The degree of improvement on the stroke scale score after IAUK infusion was statistically more significant(p

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  2. [국내논문]   속립성 뇌결핵의 자기공명영상 소견  

    최창락 (충남대학교 의과대학 진단방사선과학교실)
    대한방사선의학회지 = Journal of the Korean Radiological Society v.35 no.1 ,pp. 13 - 18 , 1996 , 0301-2867 ,

    초록

    Purpose : To evaluate MRI(Magnetic Resonance Imaging) findings of miliary tuberculosis of the brain Materials and Methods : Six patients with miliary tuberculosis of the brain diagnosed by characteristic clinical or laboratory findings were studied with spin echo MRI before and after contrast enhancement. We retrospectively evaluated MRI findings according to the appearance, distribution, location, and enhancement pattern of the granulomas as well as associated other abnormalities. Results : In six patients, contrast-enhanced MRI of the brain showed numerous punctate, contrast enhancing lesions scattered throughout the brain. Unenhanced MRI failed to demonstrate small granulomas except a few small foci of high signal intensity on T2-weighted images. The shapes of enhancing granulomas were homogeneous nodular enhancement in 86% of cases and small ring enhancement in 14%.98% of granulomas were smaller than 3-mm and 2% were larger. Although several lesions were located in the basal ganglia, thalamus, and brain stem, the majority were located in the subpial and subarachnoid space. There was nosignificant difference in distribution of granulomas between the supratentorial and the infratentorial areas. Other associated abnormalities were focal meningitis in five cases and focal cerebritis in one. On chestradiograph, all patients had miliary tuberculosis in the lungs. Conclusion : Contrast-enhanced T1-weighted MR imaging showed numerous round, very small enhancing lesions scattered throughout the brain. The majority oflesions were located in the subpial and subarachnoid space. Contrast-enhanced T1-weighted images are helpful in the detection and diagnosis of miliary disseminated tuberculous granulomas and meningitis.

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  3. [국내논문]   Gadolinium 조영증강 뇌자기공명영상에서 자화전이의 효과   피인용횟수: 1

    조정연 (서울대학교 의과대학 방사선과학교실)
    대한방사선의학회지 = Journal of the Korean Radiological Society v.35 no.1 ,pp. 19 - 25 , 1996 , 0301-2867 ,

    초록

    Purpose : To evaluate the effect of magnetization transfer(MT) in contrast-enhanced brain MR imaging of the various intracranial diseases. Materials and Methods : We prospectively studied the effect of MT in contrast-enhanced brain MR imaging 101 patients with a variety of intracranial diseases. In all patients contrast-enhanced T1-weighted(TR/TE = 550 \14) SE MR images with and without MT were obtained on a 1.5 T superconducting unit(Magnetom, Siemens). The MT pulse used for MT images was an 8.1 msec(=250 Hz band width) sync pulse, 1000 Hz off-resonance. We randomly divided the patients into two groups : group I and group II. Group I consisted of 54 patients in whom contrast-enhanced images without MT and then images with MT were obtained justofter the injection of Gd-DTPA(0.1 mmol/kg). In group II(47 patients), contrast-enhanced images with MT and then the images without MT were obtained, considering the delayed-enhancement effect. The effect of MT was assessed visually and quantitatively. For quantitative assessment, contrast to noise ratios(CNR) were calculated in 27cases with enhancing intracranial tumors larger than 1 cm. We then compared CNRs of contrast-enhanced images with and without MT. The paired t-test was used for statistical analysis. Results : On visual assessment, only11.9%(12\101) of normally enhancing structures and only 20.3%(14/69) of enhancing lesions showed improved enhancement in images with MT. There washowever, no case in which the enhancing lesion was seen only in MR image with MT but not in that without MT. On quantitative analysis there was no statistically significant difference between overall images with MT and those without MT(p〉0.05). The average CNR of images with MT was higher than that of images without MT in group I, but not in group II. Conclusion : MT in contrast-enhanced brain MR imaging resulted in contrast improvement in a limited number(less than approximately 20%) of patients. Routine application of MT images to contrast-enhanced brain MR imaging may be of limited value. Further studies on the clinical usefulness of MT technique with more refined MT pulse are thus needed.

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  4. [국내논문]   나선식 CT를 이용한 관상동맥 석회음영 정량화의 유용성  

    최병욱 (연세대학교 의과대학 진단상사선과학교실)
    대한방사선의학회지 = Journal of the Korean Radiological Society v.35 no.1 ,pp. 27 - 32 , 1996 , 0301-2867 ,

    초록

    Purpose : To evaluate the utility of quantification of coronary artery calcification using spiral CT. Materials and Methods : Spiral CT scans of the heart were obtained in 25 patients with coronary artery disease diagnosed by coronary angiography and in six controls without coronary artery disease. Spiral CT was performed with 3 mm collimation at 3 mm\sec table speed and the obtained volume data of the heart was reconstructed at 2 mm intervals. Total calcium scores of the 30 contiguous slices of the proximal coronary artery were calculated based on the areas and peak density. Two groups were compared for total scores and sensitivity, and specificity and positive predictive values were calculated. Results : The number of subjects with coronary calcification(total calcium score>0) detected by spiral CT were 20(80%) of 25 with coronary artery disease and 2(33%) of 6 without coronary artery disease. The sensitivity, specificity, and positive predictive values were 80%, 67% and 91%respectively. Sensitivity was 64%, specificity was 80% in patients aged $\leq$ 60. Sensitivity was 76% and specificity was 83%(total calcium score 10). Conclusion : Quantification of coronary artery calcification using spiral CT has low specificity in the older group and low sensitivity in the younger group ; the procedure is therefore may not be useful as a noninvase screening test to predict the prescence of coronary artery disease. In the younger group, however, a cardiac workup is strongly indicated if calcification is present.

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  5. [국내논문]   비루관 풍선 확장술과 스텐트 삽입술시 사용되는 갈고리의 유용성   피인용횟수: 1

    김태형 (아산생명과학연구소 의료재료연구과)
    대한방사선의학회지 = Journal of the Korean Radiological Society v.35 no.1 ,pp. 33 - 37 , 1996 , 0301-2867 ,

    초록

    Purpose : To evaluate the usefulness of a hook developed for pulling out the guide wire in nasolacrimal balloon dilatation and stent placement. Materials and Methods : The head was made of stainless steel wire in a shape of a question mark, and the body was made of four stainless steel pipes. The head was attached to the body in three different ways : A) the head was anterior to the body, B) the head was posterior to the body, and C) the head was angled of 30 degrees forward from the direction of the body. 90 epiphora patients took part in a test to compare and evalvate the usefulness of different types of hook. Average number of trials, success rate and average time of the procedure were recorded. Results : The average trial number for different attachment methods A, B, and C was 4.5, 6.4, and 2.5, respectively, and the success rate 83, 70, and 97%, respectively. The average time of the procedure was 31 minutes. Conclusion : The C type hook was the most effective, and the new technique using the hook was more convenient and time-saving than the old technique using a nasal endoscopy.

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  6. [국내논문]   간세포암 환자의 간동맥 화학색전술 후의 예후인자 분석  

    김태권 (경북대학교 의과대학 진단방사선과학교실)
    대한방사선의학회지 = Journal of the Korean Radiological Society v.35 no.1 ,pp. 39 - 45 , 1996 , 0301-2867 ,

    초록

    Purpose : To evaluate long-term survival rates and prognostic factors of patients with hepatocellular carcinoma after TAE. Materials and Methods : 225 patients with hepatocellular carcinoma treated with TAE between January 1988 and December 1994 were studied. Hepatocellular carcinoma was diagnosed either histologically(n=13) orclinically on the basis of findings characteristic for hepatocellular carcinoma obtained using such as diagnostic imaging methods such as ultrasonography, CT, MRI, and angiography as well as on the basis of high serum alpha-fetoprotein level(n=212). TAE was carried out between one and six times(mean, 1.4 time) using a mixture of lipiodol and Adriamycin, together with Gelfoam. Cumulative survival rates from the day of the first TAE were obtained by the Kaplan-Meier method. Parameters likely to influence the prognosis were subjected to univariate analysis using the log-rank test Results : Cumulative survival rates at the end of the first, second, third, fourth, and fifth year were 55.9%, 32.6%, 21.9%, 17.9%, and 15.0%, respectively. The mean survival time was 727 $\pm$ 76 days. Several factors, including Child-Pugh classification, Okuda's stage, tumor size, presence of portalvein invasion by tumor, of arterio-portal shunt, and of extrahepatic metastases, catheter selection level, and number of TAE showed significant correlation with the outcome. Degrees of Lipiodol accumulation in a tumor on follow up CT were also correlated with survival rates. Conclusion : TAE is an effective measure for prolonging thepatient's life expectancy and evaluation of prognostic factor is helpful for prognosis and in deciding on the optimal therapeutic modality.

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  7. [국내논문]   폐첨부위 흉막의 정상 천막 소견 : CT 분석  

    성동욱 (경희대학교 의과대학 진단방사선과학교실)
    대한방사선의학회지 = Journal of the Korean Radiological Society v.35 no.1 ,pp. 47 - 52 , 1996 , 0301-2867 ,

    초록

    Purpose : To evaluate long-term survival rates and prognostic factors of patients with hepatocellular carcinoma after TAE. Materials and Methods : 225 patients with hepatocellular carcinoma treated with TAE between January 1988 and December 1994 were studied. Hepatocellular carcinoma was diagnosed either histologically(n=13) orclinically on the basis of findings characteristic for hepatocellular carcinoma obtained using such as diagnostic imaging methods such as ultrasonography, CT, MRI, and angiography as well as on the basis of high serum alpha-fetoprotein level(n=212). TAE was carried out between one and six times(mean, 1.4 time) using a mixture of lipiodol and Adriamycin, together with Gelfoam. Cumulative survival rates from the day of the first TAE were obtained by the Kaplan-Meier method. Parameters likely to influence the prognosis were subjected to univariate analysis using the log-rank test Results : Cumulative survival rates at the end of the first, second, third, fourth, and fifth year were 55.9%, 32.6%, 21.9%, 17.9%, and 15.0%, respectively. The mean survival time was 727 $\pm$ 76 days. Several factors, including Child-Pugh classification, Okuda's stage, tumor size, presence of portalvein invasion by tumor, of arterio-portal shunt, and of extrahepatic metastases, catheter selection level, and number of TAE showed significant correlation with the outcome. Degrees of Lipiodol accumulation in a tumor on follow up CT were also correlated with survival rates. Conclusion : TAE is an effective measure for prolonging thepatient's life expectancy and evaluation of prognostic factor is helpful for prognosis and in deciding on the optimal therapeutic modality.

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  8. [국내논문]   원격 진료 시스템 : 기흉 및 속립성 결핵의 검출능  

    박노혁 (경북대학교 의과대학 진단방사선과학교실 ) , 배경수 (경북대학교 의과대학 진단방사선과학교 ) , 신현웅 (경북대학교 의 과대학 진단방사선과학교 ) , 양근석 (경북대학교 의과대학 진단방사선과학교 ) , 염헌규 (경북대학교 의과대학 진단방사선과학교 ) , 류춘욱 (구미중앙병원 진단방사선 ) , 김용길 (대구의료원 진단방사선 ) , 서경진 (경북대학교 의과대학 진단방사선과학 교 ) , 강덕신 (경북대학교 의과대학 진단방사선과학교실)
    대한방사선의학회지 = Journal of the Korean Radiological Society v.35 no.1 ,pp. 59 - 65 , 1996 , 0301-2867 ,

    초록

    Purpose : To evaluate the clinical utility of the teleradiology system using the information super highway communication network. Materials and Methods : Two radiologists selected 101 cases of pneumothorax and 20 cases of miliary tuberculosis. There were scanned and transmitted to our hospital at a speed of 640 Kbps and displayed on a video monitor with a resolution of 1280 pixels/line $\times$ 1024 lines. Four radiologists divided into three groups :read the images group A read the images without image processing ; group B read the images with image processing, group C read the radiographic films on the view box. The authors compared sensitivity and specificity between the groups and checked their statistical significance using the Chi-square test. According to the location of the pleural line, we divided the pneumothorax into four types : continve on this live type 1, pleural line confined to the apex ; type 2, to the upper half ; type 3, to the lower half ; type 4, to the upper through lower half. We then compared sensitivity between the Three groups. Results : In the pneumothorax group, the average sensitivity of group A, B and C was 79%, 90% and 96%, and average specificity was 99%, 99% and 94%, respectively. There were statistically significant differences in sensitivity between group A and B and between group B and C (p

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  9. [국내논문]   Gadolinium-ethoxybenzyl-DTPA : 흰쥐에 실험적으로 유발한 원발성 간암의 자기공 명영상에서의 유용성  

    김명진 (연세대학교 의과대학 진단방사선과학교실)
    대한방사선의학회지 = Journal of the Korean Radiological Society v.35 no.1 ,pp. 67 - 73 , 1996 , 0301-2867 ,

    초록

    Purpose : To determine the efficacy of Gd-ethoxybenzyl-DTPA(Gd-EOB-DTPA) in MR imaging of primary hepatic tumors in rats. Materials and Methods : Primary hepatic tumors had been induced on 12 male Sprague-Dawley rats byoral administration of an experimental diet containing 3'-methyl-4'-dimethylaminobenzene for 12 weeks. T1-weighted spin echo images were obtained with 1.5 T system before and after injection of 25 $\mu$ mol/kg ofGd-EOB-DTPA. The detection rate of tumors in each image was compared to that in resected specimens. Signal intensity of the liver and the largest tumor were measured in each rat on pre- and postcontrast images. Signal to noise ratio(SNR) of the liver and liver-to-tumor contrast to noise ratio(CNR) were calculated. Results : One hundred and twenty-five liver tumors were identified on gross examination. Fifty one lesions(41%) on precontrast images, and 80(64%) on postcontrast images were demonstrated (p 0.05). Of the 92 lesions smaller than 5mm in diameter, 23(25%) were seen on precontrast image and 49 the (53%) on postcontrast image(p 0.05). Consequently, SNR increased significantly in the liver from 10.89 $\pm$ 1.96(mean standard error) to 15.59 $\pm$ 2.34(p $\pm$ 3.71 to 8.85 $\pm$ 5.42). Liver-to-tumor CNR increased from 5.55 $\pm$ 0.94 to 13.25 $\pm$ 2.50 (p〈0.01). Conclusion : The use of Gd-EOB-DTPA can increase the detection rate of primary hepatic tumors in rats, especially of small lesions.

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  10. [국내논문]   위의 간양 선암의 방사선학적소견  

    구자홍 (한양대학교 의과대학 진단방사선과학교실 ) , 임현철 (한양대학교 의과대학 진단방사선과학교 ) , 송순영 (한양대학교 의과 대학 진단방사선과학교 ) , 백정환 (한양대학교 의과대학 진단방사선과학교 ) , 김용수 (한양대학교 의과대학 진단방사선과학교 ) , 고병희 (한양대학교 의과대학 진단방사선 과학교 ) , 조온구 (한양대학교 의과대학 진단방사선과학교 ) , 박충기 (한양대학교 의과대학 진단방사선과학교 ) , 박문향 (한양대학교 의과대학 병리학교실)
    대한방사선의학회지 = Journal of the Korean Radiological Society v.35 no.1 ,pp. 75 - 79 , 1996 , 0301-2867 ,

    초록

    Purpose : Hepatoid adenocarcinoma of the stomach is a variant of gastric carcinoma with both adenocarcinoma and hepatocellular carcinomatous differentiations. Until recently, few reports had been published. The purpose of this study was to evaluate the radiologic characteristics of eleven hepatoid adenocarcinomas of the stomach as well as patterns of metastasis. Materials and Methods : Eleven pathologically proven cases of hepatoidadenocarcinoma of the stomach were retrospectively reviewed. Radiologic studies available were CT in eightpatients, abdominal ultrasonography in ten, upper GI series in seven, and hepatic angiography in two. Pathologicand radiologic characteristics of these lesions, patterns of metastasis, if present, and labolatory data(AFP and CEA) were evaluated. Results : Tumors were seen in the antrum and body in five patients, in the antrum in five, and in the body of the stomach in one. Six tumors were classified as Borrmann type 3, four as Borrmann type 2, and one as Borrmann type 4. Nine cases showed hepatic metastasis. Portal vein thrombosis was present in three cases ;two were accompanied by multiple liver metastasis and the other had portal venous thrombosis. Lymph nodemetastasis was identified in 11 cases ; N1 in five, N2 in five, and extensive retroperitoneal paraaortic and leftsupraclavicular lymphadenopathy in one. Angiography showed hypervascular metastatic liver masses in two cases. There was no evidence of metastasis to the mesentery, omentum, and peritoneum. Serum AFP was elevated in tencases(mean:24752.2 ; median:4230ng/ml). Conclusion : Radiologic findings of hepatoid adenocarcinoma of the stomach appear similar to those of non-hepatoid adenocarcinoma. However, elevation of AFP and early liver metastasis without peritoneal metastasis is suggestive of hepatoid adenocarcinoma of the stomach.

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