GE Healthcare received FDA clearance for its Q.Freeze motion correction technology that combines multiple PET/CT images from different points in the patient’s respiratory cycle to create a composite high resolution image.
This is accomplished thanks to a camera that tracks the movement of a block resting on the patient’s chest, which provides movement correction data to the algorithm that’s aggregating the images together.
Q.Freeze combines the quantitative benefits of 4D phase-matched PET/ imaging, MotionMatch, into a single static image. By collecting CT and PET data at each phase of the breathing cycle, then matching the data for attenuation correction purposes, Q.Freeze is designed to improve quantitative consistency compared to conventional static PET imaging techniques while facilitating the reading of the 4D PET/CT imaging. None of the acquisition data is wasted, as 100 percent of the counts collected are combined to create a single static image. The goal is an image that has the dual benefit of frozen patient respiratory motion and reduced image noise.