A method and device for image reconstruction
A technology for image reconstruction and image reconstruction, which is applied in the field of medical image processing, can solve the problems of waste of resources and efficiency, and achieve the effect of improving efficiency and saving resources
Active Publication Date: 2021-05-07
NEUSOFT MEDICAL SYST CO LTD
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However, this method needs to reconstruct images of all points within the field of view (x-y plane) and within the scanning range (z direction), and many reconstructed points will not be used in the subsequent reorganization, which has a certain impact on resources and efficiency. degree of waste
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[0023] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.
[0024] The cross-sectional image perpendicular to the Z axis obtained in CT scanning is not necessarily an ideal image for observing the lesion. The physiological characteristics of some lesions need to be observed on a curved or inclined surface to see the shape of the lesion. Therefore, arbitrary surface reconstruction is required to better observe the lesion.
[0025] Such as figu...
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The present disclosure provides an image reconstruction method, the method comprising: determining a plurality of reconstruction points of a target surface to be reconstructed; for each of the reconstruction points, determining a data acquisition position corresponding to the reconstruction point; acquiring the data acquisition The projection data obtained by the location; reconstructing the plurality of reconstruction points according to the projection data to obtain a reconstructed image. In this disclosure, by determining the reconstruction point of the target surface and the data collection position corresponding to the reconstruction point, the projection data obtained at the data collection position can be obtained, and only the reconstruction point of the target surface can be reconstructed. All image points need to be reconstructed, which saves resources for image reconstruction and improves the efficiency of image reconstruction.
Description
technical field [0001] The present disclosure relates to medical image processing technology, in particular to an image reconstruction method and device. Background technique [0002] In CT (Computed Tomography, computerized tomography) reconstruction, the generally reconstructed image is a cross-sectional image perpendicular to the z-axis, but some parts or lesions are not well displayed in the cross-section, and the overall shape of the lesion cannot be seen , size and range, multi-planar or curved surface reconstruction is required according to the physiological characteristics of specific parts, which are collectively referred to as arbitrary surface reconstruction. [0003] Usually, the reconstruction method of any plane is to superimpose all the cross-sectional images in the scanning range, and then perform two-dimensional image reconstruction on the specified tissues on some calibrated reconstruction lines, and a new cross-sectional image can be generated by this meth...
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IPC IPC(8): G06T11/00
CPCG06T11/003G06T2207/10081
Inventor 佟丽霞楼珊珊
Owner NEUSOFT MEDICAL SYST CO LTD