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Biomedical subjects

H Dahlin

Publications and source records attributed to H Dahlin.

11 recordsLinked to original sources
PubMed1997

The conceptual design of a radiation oncology planning system.

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 number of nodes that together formed a basis for the design of the system handling logistics. The design criteria of this system emphasised accommodation of current clinical practice and traditional treatment modalities, and facilitated means to validate the computational techniques. The system should also allow for new procedures and was based on the analysis of current practice and a synthetic idea of how 3D treatment planning should be done. The final product supports the treatment planning work in its entirety. It is believed that the techniques followed are of interest to those engaged in computer systems of similar purposes and complexities.

Computer Systems↗
PubMed1983

User requirements on CT-based computed dose planning systems in radiation therapy. Presentation of 'check lists'.

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 organization for applied research), and a group of physicians and physicists having their daily work in this field of medicine and physics was invited to produce a report on 'User requirements on CT-based computed dose planning systems on radiation therapy'. The work has been done within the frame of NORDFORSK's activities and has been independent of the existing commissions and associations in the radiology field, but it has taken into consideration recommendations that have been given by or are being produced by other organizations. This report is a short summary of the complete paper which will be published in Acta Radiologica. The aim of this short version is to get an early presentation of the 'requirement lists' (see Appendix) which we think are of immediate importance.

Computers↗
PubMed1983

User requirements on CT-based computed dose planning systems in radiation therapy.

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 organization for applied research), and a group of physicians and physicists having their daily work in this field of medicine and physics was invited to produce a report on 'User requirements on CT-based computerized dose planning systems in radiotherapy'. The work has been done within the frame of NORDFORSK's activities. The working group has been independent of the existing commissions and associations in the radiology field, but it has taken into consideration recommendations that have been given by or are being produced by other organizations.

Data Collection↗
PubMed1975

Influence of absorbed dose and field size on the geometry of the radiation-surgical brain lesion.

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 useful dose range, 16 to 25 krad.

Adult↗
PubMed1975

Destruction of small intracranial tumours with 60Co gamma radiation. Physical and technical considerations.

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 selective irradiation of tumours of various types and sizes are discussed.

Brain Neoplasms↗