Patterns of patient movement during frameless image-guided radiosurgery

Image-guided radiosurgery aligns the treatment beam to the target site by using a radiographic imaging system to locate anatomic landmarks associated with the treatment target

Martin J Murphy; Steven D Chang; Iris C Gibbs; Quynh-Thu Le; Jenny Hai; Daniel Kim; David P Martin; John R Adler

2003

Key concepts

Scholarcy highlights

  • Image-guided radiosurgery aligns the treatment beam to the target site by using a radiographic imaging system to locate anatomic landmarks associated with the treatment target
  • The position of the treatment site during image-guided radiosurgery was measured at approximately 1–2-min intervals, on average, using orthogonal amorphous silicon X-ray cameras and an image registration process that determined all six degrees of freedom in the target’s position
  • The treatment site position along each axis of translation was observed to vary by an average of 0.45 mm for the cranium, 0.53 mm for the cervical spine, 0.53 mm for the lumbar and thoracic spine, 1.06 mm for the lung, and 1.50 mm for the pancreas
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