Because magnetic resonance imaging–guided radiation therapy (MRIgRT) offers exquisite
soft tissue contrast and the ability to image tissues in arbitrary planes, the interest in this …

Technical innovations and developments in areas such as disease localization, dose
calculation algorithms, motion management and dose delivery technologies have …

The use of magnetic resonance imaging (MRI) in radiotherapy (RT) planning is rapidly
expanding. We review the wide range of image contrast mechanisms available to MRI and …

Purpose: Accurate anatomical delineation of the gross tumour volume (GTV) is crucial for
effective radiotherapy (RT) treatment of prostate cancers. Although reference to pelvic …

Distortion in magnetic resonance images needs to be taken into account for the purposes of
radiotherapy treatment planning (RTP). A commercial MRI grid phantom was scanned on …

Recently, a 3D phantom that can provide a comprehensive and accurate measurement of
the geometric distortion in MRI has been developed. Using this phantom, a full assessment …

Spatial encoding in MR techniques is achieved by sampling the signal as a function of time
in the presence of a magnetic field gradient. The gradients are assumed to generate a linear …

A phantom that can be used for mapping geometric distortion in magnetic resonance
imaging (MRI) is described. This phantom provides an array of densely distributed control …

PURPOSE: Magnetic resonance (MR) and computed tomography (CT) image fusion with CT-
based dose calculation is the gold standard for prostate treatment planning. MR and CT …

Purpose: To determine the prostate volumes defined by using MRI and CT scans, as well as
the difference between prostate delineation in MRI and CT in three dimensions (3D). A …