RT Journal
T1 RIo de janeiro
JF Journal of the American Medical Association
JO Journal of the American Medical Association
YR 1929
FD October 12
VO 93
IS 15
SP 1160
OP 1161
DO 10.1001/jama.1929.02710150052021
UL http://dx.doi.org/10.1001/jama.1929.02710150052021
AB Radiology in the Study of Tuberculosis 
    Dr. Manoel de Abreu, in an address delivered recently before the National Academy of Medicine, discussed the usefulness of radiology in the study of tuberculosis. In establishing the diagnosis and prognosis, as well as in determining the evolution of the disease, radiology is of more value than auscultation, percussion and some other methods. The speaker said that the radiologist should chiefly investigate the volume of the shadows, their anatomic and pathologic constitution, and their evolution. The volume of an infiltrated area is the product of the square of the surface multiplied by the amount of accentuation of the radiologic image. Chronic tuberculosis is characterized early by an inflammatory reaction which develops more or less rapidly and reaches a stage of relative equilibrium in which infiltration either stops temporarily or decreases in progress. The process of infiltration reaches its stage of relative equilibrium in from