METHOD FOR COMPUTING PATIENT RADIATION DOSE IN COMPUTED TOMOGRAPHY
First Claim
1. A method for determining a radiation dose delivered to a patient during a computed tomography (CT) scan of the patient, comprising:
- subjecting a patient to an x-ray beam from an x-ray source;
determining a primary x-ray radiation level from the x-ray beam;
determining a scattered x-ray radiation level from the x-ray beam; and
calculating a radiation dose delivered to the patient based on the primary x-ray radiation level and scattered x-ray radiation level.
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Abstract
A system and method are disclosed for computing a radiation dose delivered to a patient during a computed tomography (CT) scan of the patient. The CT image dataset generated during the scan of the patient, and one or more parameters relating to a x-ray source are used to calculate the radiation dose delivered to the patient as a function of the CT image data set and the one or more parameters of the x-ray source. The radiation dose is generally found by calculating a primary x-ray dose distribution and scattered x-ray dose distribution from the CT image dataset and taking the sum of the primary x-ray dose distribution and scattered x-ray dose distribution.
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Citations
37 Claims
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1. A method for determining a radiation dose delivered to a patient during a computed tomography (CT) scan of the patient, comprising:
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subjecting a patient to an x-ray beam from an x-ray source; determining a primary x-ray radiation level from the x-ray beam; determining a scattered x-ray radiation level from the x-ray beam; and calculating a radiation dose delivered to the patient based on the primary x-ray radiation level and scattered x-ray radiation level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for computing a radiation dose delivered to a patient during a computed tomography (CT) scan of the patient, comprising:
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generating a CT image dataset of a region of the patient; determining one or more parameters relating to a x-ray source used to generate the CT image dataset; and calculating the radiation dose delivered to the patient as a function of the CT image data set and the one or more parameters of the x-ray source. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for computing a radiation dose delivered to a patient during a computed tomography (CT) scan of the patient, comprising:
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generating a CT image dataset of a region of the patient; determining one or more parameters relating to a x-ray source used to generate the CT image dataset; calculating a primary x-ray dose distribution as a function of the CT image dataset and the one or more parameters relating to a x-ray source; calculating a scattered x-ray dose distribution as a function of the primary x-ray dose distribution; and computing the radiation dose delivered to the patient based on the primary x-ray dose distribution and scattered x-ray dose distribution. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37)
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Specification