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Biomedical subjects

M J Croft

Publications and source records attributed to M J Croft.

3 recordsLinked to original sources
PubMedDate not supplied

Stereotactic radiosurgery of arteriovenous malformations.

Stereotaxis has been introduced at the Joint Center for Radiation Therapy in Boston, MA, to aid in the precise localization and treatment of arteriovenous malformations (AVMs). A Brown-Roberts-Wells stereotactic system and a 6 MV linear accelerator have been modified for these treatments. By using multiple isocentric rotational fields, radiation doses from 1500 to 2500 cGy can be safely prescribed to the AVM in efforts to occlude the blood vessels without risking damage to nearby radiosensitive structures. Sixteen patients have been treated from February 1986 to July 1988 using the technique described.

Arteriovenous Malformations↗
PubMedDate not supplied

Film dosimetry for shaped electron fields.

The key to successful electron beam treatment planning is to realize that an electron beam does not behave like a photon beam, and that each electron field is unique and should be treated as such. Film dosimetry provides an efficient and accurate method of determining electron dose distributions for a particular field when compared to the cumbersome, time-consuming ion chamber in tissue equivalent material, thermoluminescent dosimeters (TLDs), or complex equivalent square calculations.

Electrons↗