PubMed Health⌕ Search

Biomedical subjects

F H Edwards

Publications and source records attributed to F H Edwards.

62 records · Page 4Linked to original sources
PubMed1979

Use of a programmable pocket calculator in radiotherapy treatment planning.

Software packages for a programmable pocket calculator have been developed for use in dosimetry. Using a field equation and a mathematical model of the beam profile, one can find the dose delivered to any point within the irradiated volume. Use of these programs for simple field calculations allows the radiologist to concentrate on more complex treatment plans.

Computers↗
PubMed1979

A new technique for the calculation of scattered radiation from 60Co-teletherapy beams.

An alternative to the Clarkson technique for calculating total scattered radiation is presented. Resultant TAR values are compared with those obtained by the Clarkson technique for the same field. The new scatter technique is always more than 2.8 times faster than the Clarkson technique and more than 4 times faster on a large number of fields. The new approach appears to offer a simple and expedient alternative to the more traditional methods for iiregular field dose calculations.

Cobalt Radioisotopes↗
PubMedDate not supplied

A new technique for the calculation of scattered radiation for 10 MV photon beams.

An alternative to the Clarkson technique for calculating total scattered radiation is presented for use with 10 MV photon beams. When compared to the same field size and depth parameters, the resultant TMR values are in good agreement with results utilizing the Clarkson technique. Lengthy iterative procedures are avoided in this new scatter technique in favor of a more efficient SMR algorithm, thereby reducing the amount of required computation time. The speed and simplicity of this method make it especially amenable to use with small desk top computers and even programmable pocket calculators.

Computers↗