The treatment chain
  Optical Triangulation
Measurement in the Catalyst™ system is based on the principle of optical triangulation. A rapid and near-invisible sequence of patterns is projected onto the surface of the object to be measured. At the same time, images are captured by a camera, which is mounted at an angle from the projector. By analyzing the recorded image sequence, a high resolution 3D surface model can immediately be reconstructed. Thanks to the speed and stability of the system´s components and mechanics, a complete surface can be captured in fractions of a second, with an accuracy of a few tenths of a millimeter – measured at a distance of several meters away.
High-performance measurement and computation allows the patient motion to be tracked and applied to a deformable volumetric model in real-time. Information on any set-up errors as well as the required couch shift to bring the target (red sphere) to the treatment position (blue sphere) is continuously re-projected directly on the patient’s skin, thus forming a complete feedback loop.
  Re-projection and Visual Guidance
While near-invisible light is employed for measurements, the Catalyst™ is also capable of projecting a high-resolution multicolor light field onto the measured surface (so called re-projection). Measurement and re-projection can be done in parallel which enables a fully interactive feedback loop where misalignment and required corrections are clearly indicated and continuously updated.
  Marker Tracking
Apart from being a high-performance surface scanning system, the Catalyst™ platform also features direct, real-time identification and tracking of markers. This is useful where some objects to be detected are very similar in shape but still need to be uniquely identified (this is likely to be the case with e.g. immobilization devices). It can also be a benefit in cases where an object´s color, surface properties or shape makes it difficult to locate reliably based on surface registration only.
  Non-rigid Registration
The highly optimized non-rigid surface registration algorithms in the Catalyst™ system enable the real-time and continuous tracking of any motion of the patient’s skin surface, without requiring the presence of any markers or tattoos. This allows any setup errors to be immediately detected and provides information on any movement during treatment delivery.
  Deformable Models
With knowledge of the surface movements, a volumetric deformable model is used to predict the influence on the actual target position. This is useful for many applications such as patient positioning and intra-fraction motion detection, where there is an interest in acting on the target position as well as the detected motion on the skin surface. By aggregation of the data collected during each complete respiratory cycle, the clinically relevant time-weighted average target position is modeled.
  To visit respective websites click below :
Brands, We Represent
©2010 All Rights Reserved to Scan-O-Plan Systems(India). Home | About | Products | Clients | Gallery | Career | Inquiry | Location Map | Contact