Patent · US Active

Motion tracker to detect and correct for movement of a patient in a CT scanner

US9055874B2 · kind B2 · utility

1Cited by
4References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJan 28, 2008
Grant dateJun 16, 2015
Priority date—
Expiry dateJan 19, 2032

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA61B90/14
  • WIPO fieldMedical technology
  • WIPO sectorInstruments

Abstract

A motion tracker including a head band and laser devices that direct laser beams having non-concentric axes to a charge coupled device is used to determine movement of a patient during a CT scan. When the patient is motionless, the laser devices each direct a laser beam along a line, and the laser beams contact the charge coupled device at a contact location. If the patient moves, the laser devices, and therefore the contact locations, move. The charge coupled device detects the movement of the contact locations to determine the movement of the patient. A computer adjusts the x-ray image taken at the time of the movement to accommodate for this movement.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.