RESUMEN
Tc-99m pertechnetate and I-123 were used to perform thyroid scanning in 122 patients with history or clinical evidence of thyroid disease. Thyroid scans were abnormal in all patients, while thyroid palpation was abnormal in all but 19. The quality of thyroid imaging was similar with both agents in 42%, better with I-123 in 18%, and better with Tc-99m in 7%. In the remaining 33% (40 cases), there were discrepancies between Tc-99m and I-123 images. The most frequent discrepancies were "hot" or "warm" lesions on Tc-99m scans that were "cold" or normal on I-123 scans. Results from this study indicate that neither Tc-99m nor I-123 is always superior to the other as a thyroid imaging agent.
Asunto(s)
Radioisótopos de Yodo , Tecnecio , Enfermedades de la Tiroides/diagnóstico por imagen , Adulto , Anciano , Errores Diagnósticos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Cintigrafía , Pertecnetato de Sodio Tc 99mRESUMEN
A rapid method for the extraction and estimation of morphine in Indian opium is described. Methanolic extract of opium is treated with activated charcoal and the colorless extract obtained contains all of the major opium alkaloids. Morphine content is estimated colorimetrically by using hydrogen peroxide-copper-ammonia. The reaction is specific for morphine, and no other major opium alkaloid responds. The results obtained by the proposed method are in general agreement with those obtained by the nitroso method.