Assuntos
Compostos Organofosforados , Compostos de Organotecnécio , Vértebras Torácicas/diagnóstico por imagem , Tuberculose Pulmonar/diagnóstico por imagem , Tuberculose da Coluna Vertebral/diagnóstico por imagem , Idoso , Humanos , Masculino , Pneumoconiose/diagnóstico por imagem , Cintilografia , Compostos Radiofarmacêuticos , Sensibilidade e Especificidade , Medronato de Tecnécio Tc 99mRESUMO
Quantitative scintigraphy of proximal interphalangeal joints was performed by a reproducible method using 99m-Technetium in the hands of 40 normal controls and 20 patients with rheumatoid arthritis (RA). The range of the mean uptake varied considerably between proximal interphalangeal (PIP) joints in normal subjects. The mean uptake over PIP joints was not significantly different either between normal controls and RA patients, nor between those rheumatoid arthritis patients with and those without clinical signs of inflammation in the PIP joints. However, the variation in the PIP counts was significantly greater in the rheumatoid hands than in the normal hands. There was no clear correlation between the technetium uptake and the clinical parameters of inflammation in the PIP joints.
Assuntos
Artrite Reumatoide/diagnóstico por imagem , Articulações dos Dedos/diagnóstico por imagem , Artrite Reumatoide/patologia , Articulações dos Dedos/patologia , Cintilografia , Valores de Referência , Polegar/diagnóstico por imagemRESUMO
Using a quantitative method, scintigraphy of SI joints was performed by means of 99m technetium pyrophosphate in 21 patients with definite ankylosing spondylitis, in 17 control patients, and in 26 patients 'at risk', i.e. patients with complaints of back pain of the inflammatory type where on clinical grounds there was a possibility of sacroiliitis developing but with normal x-ray findings of the SI joints. Radioisotope uptake was higher in the ankylosing spondylitis group than in the other two groups, although the difference was not statistically significant with regard to the group 'at risk'. The high variance in the three groups considerably reduces the diagnostic value of the examination. In the ankylosing spondylitis group no correlation was found between radioisotope uptake and age, duration of disease, erythrocyte sedimentation rate, or radiological stage of scaroiliitis. Since the specificity and sensitivity of scintiscanning are lower than that of clinical and radiological diagnosis of the disease, we conclude that scintigraphy is not very helpful in the early diagnosis of sacroiliitis, at least by the techniques used here.
