Hans Dahlin

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The expanding use of computers in radiation therapy procedures, especially the rapidly increasing use of digital CT information, necessitates the coordination of the different systems in order to facilitate their developments. In order to define necessary demands for tomorrow a Nordic cooperation was initiated 1981 by NORDFORSK (Nordic co-operative(More)
The clinical and physical conditions for the destruction of small intracranial tumours by means of multiple gamma beam irradiation are evaluated. The effects of the collimation of the single beam and the spatial distribution of 179 beams on the superimposed three-dimensional dose distribution are investigated experimentally and theoretically. Techniques for(More)
Specimens from a number of patients locally irradiated in the thalamus for intractable pain with a multiple gamma beam technique have been examined. The geometry of well circumscribed necrotic lesions was ascertained. No correlation was seen between the dimensions of the lesions and the size of the field, 3 mm X 5 mm or 3 mm X 7 mm, within the clinically(More)
The expanding use of computers in radiation therapy procedures, especially the rapidly increasing use of digital CT-information, necessitates the coordination of the different systems in order to facilitate their developments. In order to define necessary demands for tomorrow a Nordic cooperation was initiated 1981 by NORDFORSK (Nordic co-operative(More)
The conceptual design of a three-dimensional, radiation oncology planning system is described. To assure that clinical needs were met, the working routines in two major Swedish radiation oncology departments were analysed in detail. Generic work flow was identified and mapped and compared to those in other institutions. The flow was partitioned into a(More)