The interaction between water currents and salmon swimming behaviour in sea cages.

Positioning of sea cages at sites with high water current velocities expose the fish to a largely unknown environmental challenge. In this study we observed the swimming behaviour of Atlantic salmon (Salmo salar L.) at a commercial farm with tidal currents altering between low, moderate and high velocities.

Dosimetric and geometric evaluation of an open low-field magnetic resonance simulator for radiotherapy treatment planning of brain tumours.

Background And Purpose: Magnetic resonance (MR) imaging is superior to computed tomography (CT) in radiotherapy of brain tumours. In this study an open low-field MR-simulator is evaluated in order to eliminate the cost of and time spent on additional CT scanning.

Materials And Methods: Eleven patients with brain tumours are both CT and MR scanned and the defined tumour volumes are compared.

Dosimetric verification of modulated photon fields by means of compensators for a kernel model.

The approach in treatment planning of applying beam quality correction factors to model compensator-induced depth-hardening effects is investigated and the present work comprises a dosimetric verification of the model for a common compensator material. Lead sheet modulators for four different phantom shapes were designed using a treatment planning system based on the model. The modulators were designed to yield homogeneous dose in a plane.

International surveillance of seafarers' health and working environment. A pilot study of the method. Preliminary report.

Unlabelled: The purpose of this pilot study was to develop and assess a method for a long-sighted, international comparative survey of seafarers' working, living and health conditions.

Method: The seafarers completed a short questionnaire in medical clinics in connection with their mandatory health examinations. The pilot study included basic data on the person and the ship, the length of the latest tour of duty, injuries if any and injury characteristics.

Evaluation of radiotherapy in high-risk breast cancer patients: report from the Danish Breast Cancer Cooperative Group (DBCG 82) Trial.

The role of postmastectomy irradiation together with systemic treatment was evaluated in high-risk patients included in the Danish Breast Cancer Cooperative Group (DBCG) protocol 82. As of June 1989, a total of 1473 pre- and menopausal patients were randomized to postmastectomy irradiation + CMF versus CMF alone (protocol 82-b). A total of 1202 postmenopausal patients were randomized to postmastectomy irradiation + Tamoxifen versus Tamoxifen alone (protocol 82-c).