J J Touyá

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The use of single photon emission computed tomography (SPECT) as the procedure for screening, assessing the size and number of embolized areas, and evaluating the follow-up of patients with pulmonary thromboembolism (PTE) is reviewed. Details of the technique for acquiring and processing perfusion and ventilation lung SPECTs are presented. The tomographic(More)
Lung endothelial N-isopropyl-p-iodoamphetamine (IMP) binding sites were assessed applying principles of competitive binding assay adapted for in vivo measurements obtained by digital imaging. Data were acquired following the method published by Rahimian et al., a modification of the dual indicator dilution technique of Chinard and Crone. Iodine-123 (123I)(More)
Selective pulmonary uptake of many natural and synthetic substances has been demonstrated by physiologists and pharmacologists using isolated perfused lung preparations or invasive techniques. It is difficult, however, to relate these laboratory studies to disease processes and to the study of problems encountered in a clinical environment. Our goal was to(More)
Our group has undertaken the determination of serum levels of beta-2-microglobulin in 250 patients. We have compared this diagnostic entity to radioisotopic glomerular filtration rate, serum creatinine, and blood urea nitrogen. We have also analyzed the cost effectiveness of each of these diagnostic entities and combinations thereof. We conclude that(More)
Recently, the lung has received increasing attention as a metabolic organ. In this role, the lung modulates the composition of the arterial blood by several mechanisms: removing active substances from the plasma, releasing substances into the plasma, temporarily holding substances from circulation, and activating or inactivating substances that pass through(More)
The authors present an exceptional case of chemodectoma jugulare with important invasion of the skull base involving all the cranial nerves on one side and conforming Garcin's syndrome. Practically all the possible ways of spreading were followed by the tumor, with involvement of the posterior, middle and anterior fossas of the skull base and also orbit,(More)