CT-MR Registration of Brain Tumor
Initial position of the two images
CT-MR Registration of Brain Tumor
Result of automatic rigid registration algorithm
Image Registration
With the technology of image registration two (or more) images can be aligned in a common coordinate system such that corresponding image content is spatially coinciding. The goal of registration is to compensate for the patient motion between different image acquisitions, be it follow-up acquisitions or acquisitions in different imaging modalities such as CT, MR or PET/SPECT.
Increase diagnosis quality
through good alignment of the images pathologies are easier to detect
Reduce turnaround time
in current clinical practice and healthcare centers
Precise Image Registration
Obtain more precise rigid registration compared to ordinary registration
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Chimaera GmbH is a reliable partner in providing image registration technologies
Possible applications where Image Fusion could be applied to:
- Perfusion
- Cardiac: motion compensation
- Image stitching
- Volume masking (punching)
- Model-to-image registration
- Intensity inhomogeneity correction (MR)
- Multi-modal input data (CT, MR, SPECT, PET)
- 2D-2D, 3D-3D, 2D-3D
- Data-independent and robust parameter estimation
- Fully automatic, landmark-based and manual registration
- Pre-processing for optimal registration results
- Different field-of-views
- Focus on arbitrary ROIs (regions of interest)
- Incorporation of intensity transfer functions
- GPU hardware acceleration
Rigid Registration
The transformation between the images is limited to only rotations and translations. This method is used to establish a link between different scanner coordinate systems or to account for rigid body movements
Non-rigid registration
Techniques allow far more degrees of freedom compared to rigid registration. It can be used to compute complex deformations between images, for example due to breathing motion and soft tissue deformations. Even inter-patient registration is possible in order to build atlases of various subjects
Work case
PET-CT Registration of Melanoma Patient
Compenstation of breathing motion in PET-CT image pair of melanoma patient. The images have been acquired at different times with single scanners. The example shows an exemplary slice from the 3-D volumes.
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