Narrow beam CT using a 3D fluence modulation and scatter shield system
US10531844B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2019 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | Aug 9, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2223/6126
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Described are apparatus and methods of operation for three dimensional fluence modulation and scatter shielding for dedicated computed tomography (CT). Through the disclosed invention, the number of incident photons on the field of view (FOV) of the imaging system becomes proportional to the path length of the photon through the anatomy of interest. The apparatus is comprises a patient specific x-ray fluence modulation unit and a scatter shield unit. The fluence modulation unit reduces radiation dose differences across the anatomical part and the dynamic range requirements for the x-ray detector. The scatter shield unit is intended for preventing the scattered beams from reaching the x-ray detector. The internal structures of each unit are composed of elements with adjustable positions dependent on the specific shape of the object in the field-of-view (FOV). Method of operation are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.