X-ray line source implementing conformal collimation, and associated method

The system uses a field emission cathode device with controllable cathodes and a dynamic collimator to achieve high X-ray flux and efficient collimation, addressing thermal limitations and penumbra issues in X-ray sources for imaging and therapy.

WO2025158301A1 Publication Date: 2025-07-31NCX CORP
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Patent Information

Application Number
PCT/IB2025/050672
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-01-22
Filing Date
2025-01-22
Publication Date
2025-07-31

AI Technical Summary

Technical Problem

Existing X-ray sources face limitations in achieving high X-ray flux without thermal degradation of the anode, particularly in applications requiring large focal spots for radiation therapy, where penumbra issues and reduced efficiency are prevalent due to the difficulty in collimating X-rays from anisotropic sources.

Method used

A system comprising a field emission cathode device with individually controllable cathodes to form an elongate focal area on the anode, combined with a dynamic collimator that filters X-ray beams to minimize penumbra, allowing for high X-ray flux and efficient collimation.

Benefits of technology

The solution enables high X-ray flux and dosage rates while preventing anode thermal degradation, maintaining efficient collimation and minimizing penumbra, suitable for both imaging and therapeutic applications.

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Abstract

An X-ray system for providing an X-ray dosage, includes an X-ray source including an anode and a field emission cathode device in spaced-apart relation with the anode and arranged to emit electrons toward the anode so as to form an elongate focal area on and extending along the anode and to actuate emission of X-ray beams from the elongate focal area directed toward a treatment field. A collimator device is disposed between the anode and the treatment field, wherein the collimator device is configured to shape the X-ray beams from the elongate focal area of the anode by filtering the X-ray beams to minimize a penumbra of the X-ray beams directed through the collimator device to interact with the treatment field. An associated method is also provided.
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