Abdonimal aortography and histopathologic examinatio after absolute ethanol infusion at ast (0.4cc/sec) andslow speed (0.04cc/sec) were performed on 16 rats(2 controls, 7 fast infusion groaup, 7 slow infusion group).Angiographic and histopathologic findings were correlated and the findings of slow and fast infusion groups werestudied. The rsults are as follows: 1.Histopathologic findings of the fast infusion group revealed wide area ofglomerular and tubular collapes, obliteration of the free space between the Bowmann's capsule and golmerulus,sloughing and loss of the endothelium, fresh thormbi attached to the wall, and cleavage of the muscle layer of thearteries. 2. Angiographic findings of the fast infusion group revealed luminal irregularity, early ostruction ofthe aorta and the renal arteries,and delayed circulation time. 3. Histopathologic findings of the slow infusiongroup revealed degenerated, coalesced red blood cell packed in the glomeruli, focal areas of severe glomerular andtubular damage on relatively normal backgroun, endothelial and muscular damage of the arteries. 4. Angiographicfindings of the slow infusion group revealed focal perfusion defect of the kidney, delayed circulation time, andmild luminal irregularity, but there was no obstruction of the major arteries. 5. In conclusion, author believesthat endothelial damage and thrombus formation from the damaged vessel wall, as well as direct cytotoxicity and insitu emboli fommation play a significant role in the embolic effect of absolute ethanol.
Aorta ; Aortography ; Arteries ; Endothelium ; Erythrocytes ; Ethanol* ; Kidney ; Perfusion ; Phenobarbital ; Thrombosis

No abstract available.
Constriction, Pathologic

Recently data about performances in radiology department tend to increase rapidly and appropriate use of computer system is needed to monitor variuos jobs including scheduling of the patient, reporting of radiologic examination and film library management. The authors describe experiences in computerizing several jobs of radiology departement using Aplle II personal computer during last uear, and our experiences suggest that with appropriate soft ware and peripheral devices, personal computer can handle relatively large amount of informations about a certain functions in radiology department. The authors also put emphasis on the point that meticulous characterization and cocumentation of data is mandatory for effective use of computer system and should be done by radiologist who use or want to use computer system.
Computer Systems ; Humans ; Microcomputers

PURPOSE: To evaluate the relative value of arterial, portal venous and delayed phase images of spiral CT in the detection of metastatic tumor of the liver. MATERIALS AND METHODS: Forty-three metastatic tumors in twelve patients were underwent tri-phasic spiral CT examination with injection of 120 ml ionic contrast material (36 g of iodine) at the rate of 3 ml/sec. Arterial, portal venous and delayed phase CT images were obtained 35, 65, and 360 seconds after the start of contrast injection, respectively. RESULTS: Arterial phase images detected 35(81%), portal venous phase images 43(100%), and delayed phase images 34(79%) lesions, respectively(p<0.05). All masses larger than 2cm(n=23) were detected in all three phases, whereas 60%, 100%, 55%of the masses smaller than 2cm(n=20) were detected in arterial, portal venous and delayed phase CT, respectively. The best contrast between masses and the hepatic parenchyma was in portal venous phase followed by arterial and delayed phase(p<0.01). In two hypervascular masses, the contrast was better in arterial phase. CONCLUSION: Portal venous phase of spiral CT is optimal in the detection of metastatic tumor of the liver. Arterial phase may be helpful for the detection of hypervascular metastasis. Delayed phase should be used restrictively.
Humans ; Liver* ; Neoplasm Metastasis ; Tomography, Spiral Computed*

PURPOSE: We evaluated the role of conventional CT for preoperative staging of gastric carcinoma. MATERIALS AND METHODS: Conventional CT was prospectively performed in 95 patients with gastric adenocarcinoma proved by means of endoscopic biopsy, and findings were compared with those of surgery or pathology. RESULTS: In the evaluation of pancreatic invasion of the primary tumor, the sensitivity, specificity, and diagnostic accuracy of CT were 71%(5/7), 95%(84/88), and 94%(89/95), respectively. CT depicted transverse mesocolon invasion in only one of the 4 cases(25%). In the evaluation of lymph node metastasis, the sensitivity, specificity, and diagnostic accuracy were 33%(24/72), 99%(867/878), and 94%(891/950), respectively. In lymph node staging, 49 patients(52%) were correctly staged, 39(41%) were understaged, and 7(7%) were overstaged with CT. CT failed to demdnstrate peritoneal carcinomatosis in all 10 patients. CONCLUSION: The role of conventional CT in the preoperative evaluation of gastric adenocarcinoma is limited due to poor sensitivity despite of good specificity and accuracy.
Adenocarcinoma ; Biopsy ; Carcinoma ; Humans ; Lymph Nodes ; Mesocolon ; Neoplasm Metastasis ; Pathology ; Prospective Studies* ; Sensitivity and Specificity

No abstract availalbe.
Carcinoma, Hepatocellular*

No abstract availalbe.
Liver Abscess, Pyogenic*

No abstract availalbe.
Hemangioma*

Mirizzi syndrom is a rare disorder characterized by obstruction of common hepatic duct due to impacted gallbladder neck or dystic duct stone and is an uncommon cause of obstructive jaundice. Authors experienced one case of Mirizzi syndrome mimicked lobulated intraductal tumor.
Gallbladder ; Hepatic Duct, Common ; Jaundice, Obstructive ; Mirizzi Syndrome ; Neck

PURPOSE: To evaluate the efficacy of the arterial phase of dynamic spiral CT in the detection of pancreatic adenocarcinoma compared with the late phase. MATERIALS AND METHODS: Two phase spiral CT images of seventeen patients with pathologically proven pancreatic ductal adenocarcinomas were compared retrospectively. CT scans were performed with 5mm collimation at 1:1 pitch table speed. Images of arterial and late phases were obtained at 35 seconds and 180 seconds after initiation of administration of 100mL of contrast material(3mL/sec), respectively. Images of the arterial phase were compared with those of the late phase. RESULTS: Images of the arterial phase showed sufficient contrast between the tumor and adjacent pancreatic parenchyma in 12 cases, insufficient in four cases, and no significant contrast in one case. Images of the late phase showed sufficient contrast in five cases, insufficient in five cases, and no significant contrast in seven cases. Images of the arterial phase was superior to that of the late phase in 12 patients(70.6%). In six of the 12 patients, only the images of the arterial phase showed contrast between the tumor and the adjacent parenchyma. The images of late phase showed only one case of three metastasis detected on the images of the arterial phase. CONCLUSION: The arterial phase of spiral CT is superior to the late phase that is comparable with conventional CT in the detection of pancreatic adenocarcinoma.
Adenocarcinoma* ; Humans ; Neoplasm Metastasis ; Pancreatic Ducts ; Retrospective Studies ; Tomography, Spiral Computed* ; Tomography, X-Ray Computed