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P Corvisiero

Publications and source records attributed to P Corvisiero.

4 recordsLinked to original sources
PubMed1993

Verification of the integral transformation of the projections technique for scatter correction in positron tomographs.

A scatter correction algorithm, based on the integral transformation of the projections, has been implemented when using the C.N.R. positron tomograph in Pisa. The performance of the method has been evaluated by measurements on ad hoc phantoms. The technique allows a significant average reduction of the reconstructed scatter fraction. The limitations of this approach have also been investigated.

Algorithms↗
PubMed1993

A personal dosimeter prototype for static magnetic fields.

A personal dosimeter prototype, for static magnetic fields with three Hall probes, has been designed and built to provide a reliable instrument for long-term analysis. The probe output signals, proportional to the magnetic flux density components of the vector B, are filtered, sampled, and stored in a buffer memory sufficient to cover a whole worker shift. The data sampling rate is high enough to record the operator movements within the fringes of the magnetic field. The content of the buffer memory is then transferred on a personal computer and registered on individual dosimetric cards. The data can be used for personal exposure monitoring.

Electromagnetic Fields↗
PubMed1983

Elimination kinetics of iopamidol, a new water soluble nonionic radiographic contrast medium, analyzed by radioactivation.

We have studied the elimination kinetics of iopamidol employing radioactivation and radiochemical separation. This method offers the advantage of guaranteeing absolutely no interference by radiation with tissue distribution or elimination kinetics of the analyzed compound. Our results show that iopamidol does not cross the blood-brain barrier, has no effect on thyroid iodine uptake and does not accumulate in the liver.

Animals↗