ABSTRACT
Magnification in mammography is changing for the worse if the goal is to show objects (microcalcifications) which are smaller or of the same size as the focal spot of the x-ray tube. A radiograph without intensifying screens offers more information than a standard screen-film mammography. Magnification yields an easier visibility of microcalcifications larger in size than the focal spot; there are the disadvantages of the microfocal tube. With the intensifying screens now in use the most profitable focal spot size in mammography seems to be 0.4-0.6 mm.
Subject(s)
Mammography , Radiographic Magnification , Breast Diseases/diagnostic imaging , Calcinosis/diagnostic imaging , Humans , Physical Phenomena , PhysicsABSTRACT
A study on the diagnostic value of the parotid and mixed saliva assay after stimulation with 1% pilocarpine hydrochloride was carried out in 36 controls and 26 patients affected with chronic pancreatitis. No statistical difference between the two groups was found as far as saliva volume, bicarbonate and amylase (concentration and output) are concerned. No correlation was found between the results of the saliva test and those of the secretin-pancreozymin test or endoscopic retrograde pancreatography. These data excluded any diagnostic role of the saliva test in chronic pancreatitis.
Subject(s)
Amylases/metabolism , Bicarbonates/metabolism , Pancreatitis/diagnosis , Parotid Gland/metabolism , Saliva/metabolism , Cholecystokinin , Chronic Disease , Humans , Pancreas/diagnostic imaging , Pancreatitis/physiopathology , Parotid Gland/enzymology , Pilocarpine/pharmacology , Radiography , Saliva/analysis , Saliva/enzymology , Secretin , Secretory Rate/drug effectsABSTRACT
34 patients were treated with cimetidine and placebo in a double blind trial and 42 were treated with cimetidine alone. Criteria investigated were the pain response, consumption of antacids when required and especially the endoscopically demonstrated scarring of the duodenal ulcer. Compared with placebo, cimetidine is capable of soothing pain and also reducing the consumption of antacids more quickly and to a greater extent. The differences are statistically significant. Complete anatomical healing of the ulcer was established in the double blind study in 80% of the patients in the cimetidine group and in 40% of the placebo group. Similar results were also shown in the group which received cimetidine alone.
