Device and method for quality assurance and online verification of radiation therapy
First Claim
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1. A radiation monitor comprising:
- a set of pixel ion chambers wherein the pixel ion chambers comprisea top electrode;
a segmented electrode connected to the top electrode through a mid layer; and
a plurality of chambers formed within the mid layer extending from the top electrodes to the segmented electrodes;
wherein the mid layer is laminated to the top electrodes and segmented electrodes by an array of adhesive dots, wherein the adhesive dots are dimensioned and positioned on the mid layer to provide ventilation slits or channels for the pixel ion chambers, and wherein the top electrodes comprise an inner printed carbon layer wherein the inner carbon layers are connected by a copper grid.
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Abstract
A radiation monitor and method of monitoring the radiation delivered to a target by a radiation device is described. The radiation monitor contains a set or matrix of pixel ion chambers. The pixel ion chambers are preferably constructed of a top electrode and a segmented electrode connected to the top electrode through a mid layer. The plurality of pixel ion chambers is formed within the mid layer extending from the top electrode to the segmented electrode. The mid layer is laminated to the top electrode and segmented electrode by an array of adhesive dots, wherein the adhesive dots are dimensioned and positioned on the mid layer to provide ventilation slits or channels for the ion chambers.
51 Citations
11 Claims
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1. A radiation monitor comprising:
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a set of pixel ion chambers wherein the pixel ion chambers comprise a top electrode; a segmented electrode connected to the top electrode through a mid layer; and a plurality of chambers formed within the mid layer extending from the top electrodes to the segmented electrodes; wherein the mid layer is laminated to the top electrodes and segmented electrodes by an array of adhesive dots, wherein the adhesive dots are dimensioned and positioned on the mid layer to provide ventilation slits or channels for the pixel ion chambers, and wherein the top electrodes comprise an inner printed carbon layer wherein the inner carbon layers are connected by a copper grid. - View Dependent Claims (2)
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3. A pixel ion chamber with reduced leakage comprising:
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a top electrode; a mid layer connected to the top electrode, wherein the mid layer has hole extending through forming a chamber; a segmented electrode connected to the mid layer;
wherein the segmented electrode comprises a top layer of a carbon print pixel that interfaces the corresponding chamber of the mid layer, and;a copper guard ring encircling the pixel; a signal track connected to the pixel by a plugged via, thereby forming a pixel track; and a copper guard track surrounding the pixel tracks. - View Dependent Claims (4, 5, 9, 10, 11)
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6. A monitor with improved transparency for measuring radiation comprising:
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a matrix of pixel ion chambers, wherein the pixel ion chambers comprise; a top electrode; a mid layer; a segmented electrode; a signal track connected to the pixel by plugged via to form a pixel track; and copper guard tracks surrounding the pixel tracks, wherein the top electrode comprises a top outer layer of printed carbon as an EMC shield. - View Dependent Claims (7, 8)
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Specification