in seven patients the extrathyroidal neck activity was measured by using a scanner , and the mean was 6.3 % of the extrathyroidal total body radioactivity comparing favourably with an assumed 6 % used in our calculations.we have shown that the measurement of the thyroid uptake of ( 99m ) tc with a scintillation counter is of value , and that it is not necessary to use scanning techniques in the diagnosis of thyrotoxicosis .
C0040132
thyroid
C0040156
thyrotoxicosis