2results about How to "Achieve registration" patented technology

This invention relates to the field of image registration technology, specifically to a dynamic monitoring system for pulmonary nodules using dose-dependent CT scans. The invention obtains an edge cluster encompassing all lung images based on the positional distances between corresponding contour points on edge lines in all lung images; it obtains multiple sets of isotopic contour points based on the positional distribution of all contour points in different lung images; it obtains the referenceability of each set of isotopic contour points by considering the positional relationship between each set of isotopic contour points and other sets of isotopic contour points with the same number of angles on the lung images, as well as the fluctuation characteristics of the corresponding angles of each set of isotopic contour points, and selects anchor points; it constructs a relative positional model of the nodule region in each lung image based on the positional distribution of anchor points and nodule regions in each lung image; and it achieves lung image registration for dynamic monitoring of pulmonary nodules. This invention improves the accuracy of dynamic monitoring of pulmonary nodules by flexibly registering the patient's lung images.

The application discloses a kind of dynamic phase shift interferometry system and method thereof, including first depolarization beam splitter, first depolarization beam splitter side is sequentially spaced with first polarizer, collimating lens, pinhole filter, first attenuator and laser, the other side is sequentially spaced with third polarizer and object, the upside of first depolarization beam splitter is sequentially spaced with second polarizer, second attenuator and first mirror, the downside of first depolarization beam splitter is sequentially spaced with imaging lens, second depolarization beam splitter, polarization grating and second mirror, the side of second depolarization beam splitter is provided with camera;Polarization grating is liquid crystal circular polarization grating, liquid crystal molecule fast axis orientation is periodic continuous gradual change along x direction, overall has λ / 2 phase delay amount.The application can ensure high-precision phase measurement results while meeting the demand of dynamic measurement.