Invention Grant
US08009794B2 Methods, apparatus, and computer-program products for increasing accuracy in cone-beam computed tomography
有权
方法，装置和计算机程序产品，用于提高锥束计算机断层扫描的精度
- Patent Title: Methods, apparatus, and computer-program products for increasing accuracy in cone-beam computed tomography
- Patent Title (中): 方法，装置和计算机程序产品，用于提高锥束计算机断层扫描的精度
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Application No.: US12360795Application Date: 2009-01-27
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Publication No.: US08009794B2Publication Date: 2011-08-30
- Inventor: Larry Partain
- Applicant: Larry Partain
- Applicant Address: US CA Palo Alto
- Assignee: Varian Medical Systems, Inc.
- Current Assignee: Varian Medical Systems, Inc.
- Current Assignee Address: US CA Palo Alto
- Agency: Kilpatrick Townsend & Stockton LLP
- Main IPC: A61B6/03
- IPC: A61B6/03 ; H05G1/64 ; G21K1/04
Abstract:
Disclosed are methods, systems, and computer-product programs for increasing accuracy in cone-beam computed tomography (CBCT) by obscuring portions of the radiation source so that the radiation only passes through the specific areas of the patient related to the regions-of-interest to the doctor. The obscuring action causes less radiation scattering to occur in the patient's body, thereby reducing a major source of error in the image accuracy caused by scattered radiation. Scattered radiation received by detector pixels that are obscured by direct-line of sight radiation may be used to estimate the scattered radiation in the un-obscured portion, which can be used to further increase the accuracy of the image.
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