RT Journal
A1 WAGNER HN, JR., McAFEE JG, MOZLEY JM
T1 DIagnosis of pericardial effusion by radioisotope scanning
JF Archives of Internal Medicine
JO Archives of Internal Medicine
YR 1961
FD November 1
VO 108
IS 5
SP 679
OP 684
DO 10.1001/archinte.1961.03620110019004
UL http://dx.doi.org/10.1001/archinte.1961.03620110019004
AB In 1958 Rejali, MacIntyre, and Friedell suggested the application of radioisotopic scanning methods to visualization of the cardiac blood pool.1 Since that time, several different radioisotopic scanning devices have been developed and applied to problems in medical diagnosis. Using an automatic photoscanning technique developed at this hospital, we have studied a series of 40 patients in whom differentiation of cardiac dilatation from pericardial effusion was not certain by clinical means.Principles of Radioisotope Scanning 
    Radioisotope scanning is the visualization of an internal organ or tumor by determining the spatial distribution of a γ-emitting radioisotope within the body. Cassen and his associates introduced the method in 1950 by utilizing newly developed scintillation counters to print mechanically the distribution of radioactive iodine in the thyroid gland.2 In 1950, Anger improved the technique by replacing the mechanical stylus with a flashing light that activated photographic emulsion on x-ray film.3 In