Radioisotopic renal scanning after angiotensin converting enzyme inhibition (ACEI) has proven to be an exciting area for research. The biologic activity of markers such as DTPA and hippuran, when combined with the physiological effects of ACEI, may provide noninvasive methods of diagnosing both renal artery stenosis and renovascular hypertension. Recent investigators have demonstrated that the ...

tion has been given to evaluating pulmonary disease using radioisotopic techniques. The majority of the radioactive preparations used for these studies can be divided into two general categories : colloidal aggregates of albumin and radioactive gases. Macro aggregates labeled with 1311or 99@'Tchave been used extensivelyfor determining regional pulmonary per fusion and, as such, are useful for e...

According to the importance of positron emitters in nuclear medicine, 82mRb was produced as a member of this group of radiopharmaceuticals. After being converted into an injectable form, enough information was provided for imaging with this radiopharmaceutical. 82mRb with high radioisotopic purity and half-life of 6.5 hours, in chloride form, can be considered as a suitable positron emitt...

A priori probability density functions characterising patterns which are imprecise spatially and with regard to amplitude (fuzzy pattern:;) and which are anticipated to be present in a radioisotopic source field were developed for use in Bayesian image processing ( B I P ) . Corresponding iterative imaging algorithms were derived using the expectation maximisation ( E M ) technique of Dempster ...