Anatomy variations


Curved couch tops of MR, PET and diagnostic CT scanners often prevent the patient being positioned in the radiotherapy treatment position. Often, the immobilisation and positioning accessories used for treatment cannot be used within the smaller bores of these scanners, and patient position is compromised. The use of these images to define tumour or normal anatomy contours used for radiation therapy treatment calculations, is then questionable.

Oncology Systems Limited's OnQ rts performs deformable image registration to bring together MR or PET with planning CT images, to deform the curved couch tops and varying patient positions to match that of the planning CT acquired on a flat scanner couch top.

OnQ rts® displays dual and triple fusion images, providing the oncologist with the before and after multi modality images, to fully assess the normal and tumour anatomy to be used for radiation therapy treatment calculations.

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