Disposable single-use external dosimeters for use in radiation therapies
AssigneeSicel Technologies, Inc.
InventorsRobert D. Black, Gregory Glenwood Mann, Steven R. Widener, Phillip M. Lehman
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Abstract
Methods, systems, devices, and computer program products include positioning disposable single-use radiation sensor patches that have adhesive means onto the skin of a patient to evaluate the radiation dose delivered during a treatment session. The sensor patches are configured to be minimally obtrusive and operate without the use of externally extending power chords or lead wires.
Claims104
A method for monitoring radiation doses administered to patients undergoing radiation treatments, comprising the steps of:
- releasably securing at least one single-use dosimeter sensor patch onto the skin of the patient such that the patch is self-contained and devoid of wires extending therefrom;
- administering radiation to the patient in a first treatment session;
- contacting the sensor patch with a dose-reader device after the administering step to obtain data associated with a change in an operational parameter in the dosimeter sensor patch;
- and
- determining the radiation dose received by the patient during the administering step based on the change in the operational parameter.
A system for monitoring radiation administered to a patient during a therapeutic treatment, the system comprises:
- at least one disposable single-use dosimeter patch, the patch comprising a body holding a circuit with at least one MOSFET and an external reader contact region thereon, the at least one MOSFET having an associated threshold voltage that changes when exposed to radiation, the body comprising opposing upper and lower primary surfaces;
- and
- an external portable dose-reader being configured to make electrical contact with the patch by physically engaging with the contact region on the patch to obtain voltage threshold data corresponding to the dose amount of radiation exposure it is exposed to in use,
- wherein the patch has a perimeter that is devoid of outwardly extending loose lead wires.
A disposable external use radiation dosimeter patch, the patch comprising a conformable resilient substrate holding a circuit with an operational electronic component that changes a parameter in a detectable predictable manner when exposed to radiation, the body comprising opposing upper and lower primary surfaces, wherein the dosimeter patch, in use, is devoid of externally extending lead wires and wherein the patch is a single-use dosimeter patch that is adhesively secured to the skin of a patient.
A set of disposable single-use radiation dosimeter patches comprising:
- a plurality of discrete disposable single-use dosimeter patches, each patch comprising a conformable resilient substrate holding a circuit with an operational electronic component that changes a parameter in a detectable predictable manner when exposed to radiation, the body comprising opposing upper and lower primary surfaces and wherein the dosimeter patch, in use, is devoid of externally hanging lead wires.
A set of sensor patches according to 78, wherein a low profile sensor patch includes a sensor patch that is substantially planar when viewed from the side.
A computer program product for evaluating a radiation dose delivered to a patient, the computer program product comprising:
- a computer readable storage medium having computer readable program code embodied in the medium, the computer-readable program code comprising:
- computer readable program code for receiving pre-irradiation threshold voltage data associated with a plurality of disposable sensor patches;
- computer readable program code for accepting data from a reader configured to electrically serially contact each of the plurality of disposable sensors;
- and
- computer readable program code for determining the voltage threshold shift of the disposable sensor patches after radiation to determine the radiation exposure.
A dosimeter radiation sensor for quantifying radiation exposure or dose, comprising a sensor circuit that includes a MOSFET pair configuration that does not require floating gate structures and/or external voltage applied during radiation.
A dose-reader device comprising a sensor port that is adapted to receive a sensor patch, the sensor patch having a tab portion adapted to be inserted into the sensor port and electrically couple the sensor patch to the reader device to provide data associated with an operational parameter in the sensor patch to the reader.
A method of fabricating radiation sensor patches, comprising:
- forming a plurality of radiation-sensitive elements in a high-density pattern on on a unitary sheet of substrate material;
- calibrating at least one of the plurality of radiation-sensitive elements;
- and
- separating the plurality of radiation-sensitive elements from the unitary sheet of substrate material into a plurality of discrete radiation sensor patches.
Dependencies are inferred from the claim text.