In this research we assess patient doses from multiple diagnostic and interventional procedures in order to prevent patient from having local acute radiation injuries such as erythema or hair epilation. This research is needed to be able to give the correct advice to medical staff performing the procedures.
Lung-SPECT and rCBF-SPECT
In these nuclear medicine examinations we search for optimal image reconstruction methods in order to diagnose patient with COPD (chronic obstructive lung disorder) and rCBF (regional cerebral blood flow).
All medical x-ray procedures must be justified and optimised. In our research we search for the best (optimal) image acquisition parameters or image post-processing settings which results in sufficient image quality for accurate diagnosis and at the same time a minimum in absorbed dose to the patient.
Dosimetry in diagnostic radiology is needed to estimate patient absorbed doses and methods to assess technical image quality are needed to ensure that the x-ray equipment produces images of adequate quality.
Elemental composition of patient’s tissues is one of the factors affecting the accuracy of radiation treatment planning. Using low-energy photons it is even more important to know which tissue types the patient contain. With dual-energy computed tomography it is possible to estimate the patient’s atomic composition and therefore to perform more accurate dose planning prior to radiotherapy. The research is performed on collaboration with CMIV in Linköping and Siemens in Germany.
KAP-meters (kerma-area product-meters) are used to estimate patient dose in radiography and fluoroscopy examinations. To increase the accuracy in the KAP-meter reading, it needs more careful energy-calibration as the instrument reading depends not only on the dose (or kerma-area product) but also on the x-ray spectrum used (or photon energy), i.e. on the tube potential and heavy added Cu-filtration used in modern x-ray tubes. The research is conducted in collaboration with the Swedish national radiation safety authority.
Last updated: 2014-06-12