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The efficacy of the radioprotective agent aminopropylamino-ethylthiophosphate (WR 2721) was tested against different kinds of radiation on female NMRI-mice. The animals were divided into 4 groups and were exposed to neutrons as main component, to secondary gamma rays in a tissue-equivalent phantom, to pure gamma rays and to X-rays respectively. The following dose reduction factors have been obtained: 1.05 for neutron-irradiation, 1.33 for gamma irradiation in tissue-equivalent phantom, 1.69 for pure gamma rays and 2.08 for X-rays. The protective agent WR 2721 is apparently more efficient against low LET radiation. The mechanism of protection has been discussed in this respect.  相似文献   

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A comparison is made between xeroradiography and traditional radiography in 43 patients suffering from myopathies in pediatric age. Only eight of the patients had a neurological genesis. Xeroradiography results to be much more useful in the early diagnosis of muscular disorders and in the correct definition of the disease.  相似文献   

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The role of radiological examination in detecting the early colonic cancer is considered. A cost-benefit evaluation between conventional barium enema and double contrast enema justifies the use of D.C.E. for the early detection of colonic cancer.  相似文献   

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The authors report on 10 cases of complications during punch-biopsy of the liver, an arterio-portal fistula being the one most frequently encountered (8 out of 10 cases). The clinical condition improved in 9 cases out of 10. The authors stress the frequency of arterioportal fistula after punch-biopsy of the liver (60% it arteriography is carried out during the first week). They recall the benign character of these fistulae and their tendency towards spontaneous healing.  相似文献   

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Mammography was carried out in 3,500 patients. Of these 1,800 were examined with plate-thermography and in 450 cytology was done. 12 cases of "small" (10 mm) Ca were found, in 3 cases with thermography. In 4 cases thermography was negative, in one case for technical reasons. Mammography is the method of choice, thermography and cytology are valuable aids.  相似文献   

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