[Barium sulfate contrast medium in double contrast technic].
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Biomedical subjects
Publications and source records attributed to H Suoranta.
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A case of bleeding Meckel's diverticulum with a positive barium meal examination, selective mesenteric arteriography and 99mTc-pertechnetate scanning is presented. Complementary radiologic examinations are needed in the visualization of Meckel's diverticulum due to difficulties in making the correct diagnosis.
In the clinical part of the study routine neck PA radiographs taken with the mouth open were compared with soft tissue films with the mouth closed for detection of calcification in the carotid arteries. Only 5.5% of 90 hospitalized patients showed foci of calcification in routine films. But foci of calcification were seen in 22% of the soft tissue radiographs of the whole series. In the autopsy part of the study large foci of calcification were found at the carotid bifurcations in 12 out of 20 cadavers by radiography. In an additional five cases contact radiographs also showed smaller foci of calcification. The vascular endothelium over the calcification was often ulcerated. The significance of the large arterial foci of calcification demonstrated in the neck radiographs as a sign of atherosclerosis and as a source of cerebral thromboembolism is discussed.
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Improved catheterization technique and new laboratory methods have increased the value of venography in the diagnosis of tumors, especially of hormone-producing tumors. A review of catheterization techniques for the diagnosis of tumors of the adrenal glands, pancreas, parathyroid glands and orbit is presented with examples of findings.
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Twelve patients with tumors and three with osteitis of the extremities were studied using 99mTc-labelled tetracycline in order to image the process with gamma camera. The diagnosis of all cases were verified histologically. The labelled tetracycline was found to give positive images for the most malignant tumors and active osteitis which together comprised about half of the studied cases.
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The changes in collateral circulation after coronary artery reconstruction were analyzed in 75 patients with 177 bypass grafts and 18 complementary gas endarterectomies. The quantity of collateral circulation was directly proportional to the degree of coronary obstruction. The changes in collateral circulation depended on the success of coronary surgery or on the progression of the disease in coronary vessels. So, when the grafts remained patent, the collaterals disappeared and when the grafts became occluded, the collateral circulation returned to the preoperative level. Progressive obstruction of the coronaries caused increased collateral circulation.
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