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Hot nodular formations of the thyroid studied with serialized scintillography


, : Hot nodular formations of the thyroid studied with serialized scintillography. Tenth International Congress of Radiology Book of Abstracts, Montreal, Quebec, Canada No 528(a) p 217-218

The authors report on results of experimental studies on the most suitable methods for exploration of hyperactive nodular formations of the thyroid with a new radioscintillographic device. The apparatus was equipped alongside its recording system with a rate-meter which, through an attached register, provides a graphic display of variations of radioactive density including even those too small to be traced on the scintillograph, in spite of close observation. With this device the authors have obtained very interesting results with some cases where the hyperactive nodular formations of the thyroid were very small. The results are satisfactory even in "hot nodules" with very small uptake differences compared with the surrounding normal thyroid tissues. Where the presence of "hot nodules" is suspected it is necessary to repeat the scintillographic examination several times, at least after 2, 6 and 24 hours, in order to allow the inclusion of the highest uptake phase. This also permits a distinction between a restricted increase of trace density due to the presence of hyperactive nodular formations and that due to the greater thickness of the thyroid. In the latter case the relationship between density and radioactivity of the different portions of the gland will remain almost unaltered during the time of observation, contrary to that found in hyperactive states.

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