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Biomedical subjects

W H Payne

Publications and source records attributed to W H Payne.

At least 19 recordsLinked to original sources
PubMed1967

Visual reaction times on a circle about the fovea.

Reaction times to a dim photopic stimulus were measured on a circle about the fovea, 15 degrees from the line of direct vision. Large variations in reaction time were found on various half meridians and were interpreted as reflecting the distribution of retinal receptors.

Adult↗
PubMedDate not supplied

Estimation of chemical composition and density from computed tomography carried out at a number of energies.

A method is presented by whichcomputed tomography scans carried out at a number of energies may be utilized to obtain cross-sectional images of density and atomic number in addition to the conventional array of linear attenuation coefficients. This type of analysis has been carried out for various substances of biological relevance. Computer simulated reconstructions of clinical situations suggest that the method shows promise for providing additional diagnostic information and might dispense to some extent with the necessity of injecting contrast agents into the patient.

Autoanalysis↗