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Development and application of methods for the optimization of X-ray examinations

Project Description

This research field consists of a large number of research and development projects with the common aim to provide improved diagnostic information and/or reduced radiation dose in X-ray examinations. Several project managers are involved and a total of about fifteen employees at the Department of Radiation Physics (University of Gothenburg) and Department of Medical Physics and Biomedical Engineering (MFT) (Sahlgrenska University Hospital) are active in the research. Examples of projects include the development of VGC analysis for image quality evaluation, the software ViewDEX for image review studies and methods for simulated dose reduction. The tools are used for the evaluation and optimization of both conventional radiography and CT examinations. A major project is devoted exclusively to the evaluation and optimization of chest tomosynthesis, an x-ray technology to produce cross-sectional images of the lung using very low radiation dose that has been around for nearly a decade at Sahlgrenska University Hospital but has yet to be established in many countries. The tomosynthesis project concerns the introduction of technology from several aspects - work with the necessary methodological developments is conducted by MFT and the Department of Radiation Physics, the application of these methods and the clinical evaluation is conducted in collaboration with the radiology and pulmonary medicine departments, and learning problems are evaluated and managed together with educators and educational researchers within the LETStudio.

Project news

Patrik Sund recently (25/9 2015) defended a thesis on how to calibrate diagnostic monitors to customize the image display according to the human visual system limitations. The tomosynthesis project has just been expanded to examine the use of the technique for imaging of parts of the body other than the lung. The skeleton is the primary interest, and initially the focus has been on thoracic spine examinations. A new project aims to examine the extent to which the use of dual energy CT can lead to safer definition of the target area and decreased normal tissue complication of radiotherapy for patients with metal implants or amalgam fillings.

Future studies

An education-oriented project addressing the radiological protection challenges arising in technology-intensive complex environments where people unaccustomed to ionizing radiation are forced to take into account the risks this radiation means. This situation arises, for example, in hybrid rooms (operating theaters containing X-ray equipment), where surgical staff is involved in interventional radiology procedures. The Centre for imaging and intervention at Sahlgrenska University Hospital (BoIC) will contain a number of hybrid rooms and will soon be operational. Radiation protection in complex environments will then be actualized and the knowledge gained within this field will be important in the development of new methods for addressing these challenges.

Publications

2019

2018

2017

2016

2015

2014

2013

2012

Project Leaders

Magnus Båth
Associate professor/Senior Medical Physicist

Angelica Svalkvist
Researcher/Medical Physicist

Charlotta Lundh
Researcher/Medical Physicist

Lars Gunnar Månsson
Associate professor/Senior Medical Physicist

Anne Thilander Klang
Associate professor/Senior Medical Physicist

Page Manager: Johan Spetz|Last update: 10/16/2015
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