G01R 33/565
Correction of image distortions
Official title: Correction of image distortions, e.g. due to magnetic field inhomogeneities
G01R33/565 (Correction of image distortions) appears on 3,033 US grants and 3,093 published applications in this corpus.
Search patents in G01R- Granted patents
- 3,033
- Published applications
- 3,093
- Assignees
- 566
- Inventors
- 3,547
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 5 | 0 |
| 1985 | 2 | 0 |
| 1986 | 12 | 0 |
| 1987 | 40 | 0 |
| 1988 | 24 | 0 |
| 1989 | 25 | 0 |
| 1990 | 25 | 0 |
| 1991 | 23 | 0 |
| 1992 | 17 | 0 |
| 1993 | 19 | 0 |
| 1994 | 28 | 0 |
| 1995 | 19 | 0 |
| 1996 | 32 | 0 |
| 1997 | 22 | 0 |
| 1998 | 17 | 0 |
| 1999 | 24 | 0 |
| 2000 | 33 | 0 |
| 2001 | 37 | 8 |
| 2002 | 37 | 38 |
| 2003 | 37 | 32 |
| 2004 | 31 | 38 |
| 2005 | 25 | 41 |
| 2006 | 46 | 41 |
| 2007 | 40 | 76 |
| 2008 | 48 | 92 |
| 2009 | 56 | 100 |
| 2010 | 68 | 88 |
| 2011 | 64 | 98 |
| 2012 | 68 | 112 |
| 2013 | 75 | 138 |
| 2014 | 104 | 140 |
| 2015 | 82 | 194 |
| 2016 | 103 | 182 |
| 2017 | 176 | 166 |
| 2018 | 176 | 186 |
| 2019 | 248 | 194 |
| 2020 | 234 | 201 |
| 2021 | 190 | 165 |
| 2022 | 175 | 198 |
| 2023 | 159 | 165 |
| 2024 | 146 | 161 |
| 2025 | 147 | 144 |
| 2026 | 90 | 95 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01R 33/56509Due to motion, displacement or flow903
- G01R 33/56563Caused by a distortion of the main magnetic field b0603
- G01R 33/5659Caused by a distortion of the rf magnetic field481
- G01R 33/56518Due to eddy currents411
- G01R 33/56572Caused by a distortion of a gradient magnetic field274
- G01R 33/56554Caused by acquiring plural, differently encoded echo signals after one rf excitation263
- G01R 33/56545Caused by finite or discrete sampling218
- G01R 33/56536Due to magnetic susceptibility variations215
All 9 subgroupsShow fewer
Recent patents
- Magnetic resonance imaging with machine-learning based shim settings6 Oct 2026US 12,754,266 B2Koninklijke Philips N. V.
- Correction of motion effects in magnetic resonance (MR) data acquired using a magnetic resonance system6 Oct 2026US 12,754,271 B2Siemens Healthineers AG
- Echo planar imaging method capable of reducing image distortion6 Oct 2026US 12,754,272 B2Shanghai Jiao Tong University
- Device and method for prospective correction for gradient pulse shape distortions in MRI imaging6 Oct 2026US 12,754,273 B2Koninklijke Philips N. V.
- Magnetic field enhancement assembly and magnetic field enhancement device29 Sep 2026US 12,748,167 B2Beijing Tsinghua Changgung Hospital
- Systems and methods for cardiovascular magnetic resonance imaging8 Oct 2026US 2026/0305946 A1Ohio State Innovation Foundation
- Magnetic resonance imaging apparatus, image processing apparatus, image processing method, and program8 Oct 2026US 2026/0309822 A1FUJIFILM Corporation
- Rigid Body Motion and Background Phase Correction Using GRAPPA Aided Motion Transformed Coil Sensitivity Maps8 Oct 2026US 2026/0309823 A1The Board of Trustees of the Leland Stanford Junior University
- Simulation-based eddy current correction for diffusion weighted imaging8 Oct 2026US 2026/0309824 A1Siemens Healthineers AG
- Bloch-simulator-based joint reconstruction and field inhomogeneity estimation with plug-and-play denoising diffusion model1 Oct 2026US 2026/0299052 A1Siemens Healthineers AG
Most cited
By later US patents
- Method for operating a magnetic resonance imaging apparatus ensuring coincidence of images obtained in different examinations with respectively different positions of a subject161US 6,556,008 B2Siemens Aktiengesellschaft · 2003
- Magnetic resonance whole body antenna system, elliptically polarized with major ellipse axis tilted/non-horizontal at least when unoccupied by an examination subject132US 8,362,775 B2Siemens Aktiengesellschaft · 2013
- High field magnetic resonance122US 7,800,368 B2Regents of the University of Minnesota · 2010
- Low field magnetic resonance imaging methods and apparatus120US 9,817,093 B2Hyperfine Research, Inc. · 2017
- Ferromagnetic augmentation for magnetic resonance imaging119US 9,625,544 B2Hyperfine Research, Inc. · 2017