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Dose optimization based on outcome quality

A dose and quality technology, applied in the field of ionizing radiation dose, can solve the problem of unreliable objective measurement

Active Publication Date: 2014-08-13
KONINKLJIJKE PHILIPS NV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this radiation level is defined by the expertise and experience of the technician and radiologist in acquiring and reading patient images, and objective measures such as contrast noise ratio, signal-to-noise ratio, MTF estimation, etc.) are unreliable

Method used

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  • Dose optimization based on outcome quality
  • Dose optimization based on outcome quality
  • Dose optimization based on outcome quality

Examples

Experimental program
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Embodiment Construction

[0015] The following generally describes a method for determining the relationship between the quality of a radiologist's report (e.g., a positive conclusion) and the measured dose deposited to a patient during a corresponding scan and / or using the relationship to determine the estimated dose based on a planned scan. Validate the way in which planning scans are performed.

[0016] first reference figure 1 , schematically illustrates an imaging system 100, such as a computed tomography (CT) scanner. It should be understood that imaging system 100 can be any imaging system that utilizes ionizing radiation to scan a subject. The illustrated imaging system 100 includes a stationary gantry 102 and a rotating gantry 104 . The rotating gantry 104 is rotatably supported by the fixed gantry 102 and rotates about the z-axis about the examination region 106 .

[0017] A radiation source 110 , such as an X-ray tube, is rotatably supported by the rotating gantry 104 . Radiation source ...

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Abstract

A system includes a modeler (214) that generates a model which models a quality of findings in radiologist reports as function of deposited dose of scans from which the radiologist reports are created and a dose optimizer (216) that determines an optimal dose value for a planned scan based on the model and one or more optimization rules (218). A method includes generating a model which models a quality of fmdings in radiologist reports as a function of deposited dose of scans from which the radiologist reports are created and determining an optimal dose value for a planned scan based on the model and one or more optimization rules.

Description

technical field [0001] The following relates generally to imaging, and more specifically to optimizing ionizing radiation doses for scans based on radiation doses utilized for previous scans and radiologist reports corresponding to those scans. Background technique [0002] Imaging modalities, such as computed tomography (CT) and X-ray, utilize ionizing radiation to image objects. Unfortunately, ionizing radiation can increase the risk of living tissue damage, radiation sickness, cancer, and death in human or animal subjects. With CT, the radiation dose deposited in a subject depends on factors such as tube current (milliamp-seconds, or mAs), tube voltage (peak kilovolts, or kVp), interval / exposure time (for helical scans), slice thickness, and spacing factors (for axial scans), the number of scans under study, and patient physiology (eg, thicker or thinner). Deposited dose has been measured using the CT dose index (CTDI) in milligrays (mGy) and the dose length product (DL...

Claims

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Application Information

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IPC IPC(8): A61B6/03G16H15/00G16H30/20
CPCA61B6/542A61B6/032G06F19/321G06F19/3412G06N5/04G16H40/40G16H30/20G16H15/00
Inventor M·C-C·李E·科昂-索拉尔
Owner KONINKLJIJKE PHILIPS NV
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