For this reason the main aim of this study was to analyze the influence of the scatter radiation on image quality and the dose delivered to the breast. In particular a detailed analysis of the scatter radiation on the optimal energy that maximizes the SDNR was performed for different ...
X-ray image degradation due to scattered radiation is reduced in a system using a planar sensor sheet by providing an X-ray absorbing sheet in front of the sensor sheet, or in back of the sensor sheet, or both. The thickness and material of construction of each X-ray absorbing sheet depe...
SCATTER RADIATION CORRECTION IN RADIOGRAPHY AND CO 优质文献 相似文献 参考文献 引证文献Cone-beam computed tomography with a flat-panel imager: Magnitude and effects of x-ray scatter A system for cone-beam computed tomography (CBCT) based on a flat-panel imager (FPI) is used to examine the magn...
Reconstructions of the 3D breast were computed from the 11 projection images using primary x‐rays only, and primary plus scattered x‐rays. Results: The magnitude of scatter radiation does not change very much from one projection to another because the scatter volume does not change. However,...
In the depicted example, the X-rays 16 are collimated to be a cone-shaped beam, i.e., a cone-beam, that passes through the imaged volume. A portion of the X-ray radiation 20 passes through or around the patient 18 (or other subject of interest) and impacts a detector array, ...
Better image quality, better defect detection ZEISS scatterControl significantly improves CT image quality by reducing the occurrence of artifacts caused by scattered radiation. The contrast between the different components is increased and defect detection is simplified: Areas of parts that were previousl...
A general framework and review of scatter correction methods in x-ray cone-beam computerized tomography. Part 1: Scatter compensation approaches Since scattered radiation in cone-beam volume CT implies severe degradation of CTimages by quantification errors, artifacts, and noise increase, scatter su.....
Improvement on Cone Beam Computed Tomography in radiation treatment with anti-scatter grid using a deep learning neural network A micromachined hetero-core anti-scatter grid is proposed with the aim of realizing a large field-of-view (FOV) for a digital X-ray image sensor. A theoret... Y ...
Anti-scatter grids have been used in diagnostic x-ray imaging to improve the image quality but are not practical to use for megavoltage (MV) x-ray imaging in radiotherapy since a MV grid would be very bulky, heavy, and costly. An inherent anti-scatter detector based on erenkov radiation ...
Deep learning methods for enhancing cone-beam CT image quality toward adaptive radiation therapy: A systematic review 2022, Medical Physics Adaptive proton therapy 2021, Physics in Medicine and Biology Planning CT-guided robust and fast cone-beam CT scatter correction using a local filtration technique...