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Publications*

It is well known that double contrast knee arthrography is useful in diagnosis of meniscal lesions and other knee pathology, But intra-articular structures become less well delineated shortly after injection into the kneejoint with water soluble contrast media because of rapid absorption and dilution of the injected media. This limits the time when sharply detailed arthrograms are obtainable and precludes repeat delayed arthrogram withougreinjection of contrast media. In order to overcome this major disadvantage, the authors used epinephrine which has vasoconstrictive effect and is expected to reduce fluid movement across the synovial membrane temporarily. The authors attempted to compare epinephrine inhanced double contrast arthrographic group, einephrine(+) group, to thedouble contrast arthrographic group withoug epinephrine, epinephrine(-) group, by statistical evaluation. Eachgroup consisted of 35 cases and 7 lateral films of knee joint were taken sequentially 2,6,10,15,10,20,30, and 60 minutes after injection of contrast media, and were assessed by 5 certified radiologists. The resuls were as follows; 1. The difference of mean score of quality between epinephrine(+) group and epinephrine(-) group was statistically significant at every time interval (p value<0.01 at 2 minutes, p<0.01 at all other time intervals).Epinephrine(+) group was superior to the epinephrine(-) group in quality of film. 2. Numbers of cases above scoreof 2 which was considered to be of diagnostic quality in evaluating meniscal lesions were larger in epinephrine(+)group than epinephrine(-) group in quality of film. 3. Only 43% of cases was above score of 2 at 10 minutes inepinephrine (-) group, but 97% at 10 minutes and 80% at 20 minutes respectively in epinephrine(+) group. Therefore duration for adequate study of arthrogram is prolonged more than two times in epinephrine(+) group. 4. At 30 minuts, 57% of cases was above score of 2 in epinephrine(+) group while at 15 minuts, 80% of cases was below scoreof 2 in epinephrine(-) group. This makes it possible to repeat study without additional injection of contrast media or postponing of the examination in half of cases, if necessary. 5. The use of epinephrine in kneearthrography results in significant enhancement of radiographic quality initially (p<0.01). Therefore we can fluoroscope in good condition and obtain films of fine quality.
Absorption ; Arthrography ; Contrast Media ; Diagnosis ; Epinephrine ; Knee Joint ; Knee ; Pathology ; Synovial Membrane ; Water

Behcet's disease, though originally described as a triad of oral and genital aphthous ulcers and inflammatory, occular lesion, has had several new elements added to its description. The gastrointestinal manifestation of Behcet's disease including colitis and esophageal ulceration has been recognized in recent years. Four cases of Behcet's disease with colitis and one case with esophageal ulceration are presented and characteristic radiographic findings are described. In colitis and ulcerative esophagitis in Behcet's disease, the ulcers show collar-button appearance and tend to perforate at multiple sites, producing panperitonitis and esophagobronchial fistula, and intervening mucosa is usually normal.
Colitis ; Esophagitis ; Fistula ; Mucous Membrane ; Stomatitis, Aphthous ; Ulcer

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

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*

It is the purpose of this article to determine various normal anatomic measurements of temporomandibular joint and normal range of condylar movement using relatively simple X-ray equipment and radiographic technique in consideration of popular clinical application. Author's cases condisted of 100 clinically normal adult males and temporomandibular joint radiographs of 3 serial position so condylar head were taken by transcranial obliquelateral pojection in each case. The serial positions are centric occlusion, 1 inch opening and maximal opening position. The results were as follows; 1. In cetric occlusion, the length between the condylar head and glenoidfossa was 2.23±0.58mm in anterior part, 3.55±0.80mm in upper part and 2.76±0.72mm in posterior part. 2. Incentric occlusion, the angle (alpha) between the horizontal standard line(AB) and anterior slope (BC) was 37.22±3.87 degrees. 3. In 1 inch opening position, the distance between the summit of condylar head from thestandard point of articular eminence (B) was
Adult ; Head ; Humans ; Male ; Mandible ; Reference Values ; Temporomandibular Joint

The study was undertaken to evaluate the radiological and microscopic findings of radiation pneumonitis. All 50 rats, which were used for the experiment, received a single dose of 2,000 rads of radiation on right lung using 60 Co teletherapy. Chest teleroentgenograms were checked weekly for 13 weeks and microscopic examination of irradiated lung were performed monthly after irradiation. The resuls obtained are summerized as follows. 1. Inroentgenologic examination, radiation pneumonitis began to appear 4 weeks after irradiation and progressed withtime intervals and began to resolve after 11 weeks. 2. Chest roentgenologic findings were pneumonic consolidation,atelectasis, and pleural effusion of irradiated right lung with compensatory hyper-inflation of left lung. 3. Inthe microscopic examination, pneumonitis appeared 2 weeks after irradiation and progressed with time intervals andbegan to resolve after 8 weeks. 4. The microscopic findings were fibrin deposit in alveoli and increased septalcellularity, vascular thickening, edema and congestion. After septal fibrosis and hyperplasia of bronchialmucosa, suggseting early regenerative change of radiation fibrosis, were noted 12 weeks after irradiation.
Animals ; Edema ; Estrogens, Conjugated (USP) ; Fibrin ; Fibrosis ; Hyperplasia ; Lung ; Pleural Effusion ; Pneumonia ; Radiation Pneumonitis ; Rats ; Thorax

Thirty-five cerebello-pontine angle lesions were diagnosed with simple skull X-ray, CT, and angiography atSeoul National University Hospital from Sept. 1978 through Aug. 1982. The radiographic findings were analysed withemphasis on the differential points of CT among the major three cerebello-pontine angle tumors; acousticneurinoma, meningioma and epidermoid. The results are as follows; 1. Among the 35 cases of cerebello-pontine anglelesions, 19 cases were acoustic neurinoma. 4 cases miningioma, 4 cases epidermoid, 2 cases metastasis, 1 caseschoroid plexus papilloma, 1 case arteriovenous malformation, and 3 cases intra-axial posterior fossa tumors. 2.The characteristic radiographic findings of acoustic neurinoma were windening of internal auditory canal, petrousbone erosion, posterior extension of tumor at the level of internal autidory canal, hypo or isodense mass onpre-contrast CT with high enhancement after intravenous contrast infusion, and cystic change within the mass. 3.Meningioma shows anterior extenstion of the lesion at the level of internal auditory canal, broad base and obtuseangle sign of the lesion with petrous bone, hyperdense mass on precontrast CT. with highly homogeneous enhancementafter intravenous contrast infusion. 4. Epidermoid characteristically shows hypodense mass on precontrast CT withno change after intravenous contrast infusion. 5. The differential points of the major 3 cerebello-pontine tumorswere bone change, mass location, attenuation , degree of attachment to petrous bone, and cystic change.
Angiography ; Arteriovenous Malformations ; Infratentorial Neoplasms ; Meningioma ; Neoplasm Metastasis ; Neuroma, Acoustic ; Papilloma ; Petrous Bone ; Skull

Authors reviewed 21 cases of histologically confirmed rib tumor except metastasis and myeloma from Nov. 1973 to Dec. 1982 at Seoul National University Hospital. The resuls are as follows: 1. Major clinical findings are painand mass. 2. Pathologic diagnosis of rib tumors are 5 cases of fibrous dysplasia, 3 chondroma, 2 osteochondroma, 2desmoplastic fibroma, 3 chondroma, 2 osteochondroma, 2 desmoplastic fibroma, 5 osteosarcoma, 1 aneurysmal bonecyst, 1 eosinophilic granuloma, 1 cavernous hemangioma, 1 chondrosarcoma. 3. Radiologic findings are osteolyticchange and cortical expansion without marginal sclerosis in fibrous dysplasia, central location, well-definedosteolytic change with marginal sclerosis and no cortical destruction in desmoplastic fibroma, corticaldestruction, soft tissue mass and pleural effusion in malignant tumors.
Aneurysm ; Chondroma ; Chondrosarcoma ; Diagnosis ; Eosinophilic Granuloma ; Fibroma ; Fibroma, Desmoplastic ; Hemangioma, Cavernous ; Neoplasm Metastasis ; Osteochondroma ; Osteosarcoma ; Pleural Effusion ; Ribs ; Sclerosis ; Seoul