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Medical x-ray examination apparatus for performing k-edge imaging

一种检查装置、X射线的技术，应用在医学X射线检查装置领域，能够解决K缘吸收图像选择性成像敏感度低、不可能、低灵敏度等问题

Active Publication Date: 2010-10-20
KONINK PHILIPS ELECTRONICS NV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] A disadvantage of the known medical X-ray examination devices is the relatively low sensitivity for selective imaging of K-edge absorption images
When using known medical x-ray examination devices, a large number of potential clinical applications are either affected by this limited sensitivity, or are not possible at all because of the lower sensitivity

Method used

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  • Medical x-ray examination apparatus for performing k-edge imaging
  • Medical x-ray examination apparatus for performing k-edge imaging

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Embodiment Construction

[0019] figure 1 is a schematic illustration of a CT scanner 1 according to the invention. The CT scanner 1 comprises a fixed gantry 3 and a rotating gantry 5 which define an examination area 7 . A rotating gantry 5 is suspended on the fixed gantry 3 for rotation about the inspection area 7 . A radiation source 9, such as an X-ray tube, is arranged on a rotating gantry 5 to rotate therewith. The radiation source 9 generates a penetrating radiation beam which passes through the examination region 7 when the rotating gantry 5 is rotated about its longitudinal axis by an external motor (not shown). The collimator and shutter assembly 11 cones the penetrating radiation beam and selectively gates the radiation beam on and off. Alternatively, the radiation beam is electronically gated on and off at the source 9 . The patient support table 13 supports an object to be examined or a patient. The patient support table 13 is positioned such that the object or patient to be examined i...

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Abstract

The invention relates to a medical X-ray examination apparatus (1) for performing K-edge imaging. The medical X-ray examination apparatus (1) comprises an imaging unit (21), which is configured to spectrally decompose an X-ray absorption spectrum to image the X-ray absorption spectrum as a conventional X-ray absorption image (23a) and a K-edge absorption image (23b). The conventional X-ray absorption image (23a) includes data elements representing the anatomical background of an object of interest. The K-edge absorption image (23b) includes data elements representing quantitative information of local densities of material showing K-edge absorption within the object of interest. The imaging unit (21) comprises a spatial resolution reducer for reducing the spatial resolution of the K-edge absorption image, so that with a medical X-ray examination apparatus according to the invention an increased sensitivity of the selective imaging of a K-edge absorption image is achieved as compared to the sensitivity of the selective imaging of a K-edge absorption image of a known medical X-ray examination apparatus.

Description

technical field [0001] The present invention relates to a medical X-ray examination apparatus for performing K-edge imaging, comprising an imaging unit configured to spectrally decompose an X-ray absorption spectrum, thereby imaging the X-ray absorption spectrum as: [0002] - a conventional X-ray absorptivity image comprising data elements representing the anatomical background of the object of interest, and [0003] - A K-edge absorption image comprising data elements representing quantitative information of the local density of material showing K-edge absorption within the object of interest. Background technique [0004] Such medical X-ray examinations are known from the scientific literature "K-edge imaging in X-ray computed tomography using multi-bin photon counting detectors" (Phys. Med. Biol., Vol. 52, pp. 4679-4696, 2007) device. A known medical X-ray examination device is a computed tomography (CT) scanner comprising an imaging unit with a multi-bin X-ray photon ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03
CPCA61B6/482A61B6/4042A61B6/032A61B6/481
Inventor R·普罗克绍
Owner KONINK PHILIPS ELECTRONICS NV
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