K-space based method for reducing noise and dose of radiation or contrast for perfusion imaging
US12277684B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 2022 |
| Grant date | Apr 15, 2025 |
| Priority date | — |
| Expiry date | Feb 4, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10088
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Reducing noise and dose (radiation or contrast) for perfusion imaging in Computed Tomography Perfusion (CTP), Positron Emission Tomography (PET), Single Photon Emission Computed Tomography (SPECT), and Magnetic Resonance Imaging (MRI) medical scanning devices by using a k-space based method. The time sequence of images from the scanner data set is converted as necessary, such as using a 2D Fast Fourier Transform (FFT), into a k-space having multiple timeframes. View-shared averaging is performed to reduce noise and preserve spatial and temporal resolutions of CTP, PET, SPECT and MRI data by progressively increasing the number of time frames for view-shared averaging for more distant regions of “k-space”, before converting the data, such as through a 2D FFT into a time sequence of noise reduced images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.