Magnetic resonance imaging apparatus
First Claim
Patent Images
1. A magnetic resonance imaging (MRI) apparatus comprising:
- data storage configured to store, as preset MRI sequence controlling information, a first time and a second time,the first time defining elapsed time since a non-selective first RF (radio frequency) pulse until start of MR signal acquisition,the second time defining elapsed time since a selective second RF pulse applied to a labeling region until the start of MR signal acquisition,the second time also being a time required for a liquid present in the labeling region at a timing of the second RF pulse to reach peripheral blood vessels in an imaging region,the first time also being a time for longitudinal magnetization components of a background tissue to become substantially zero, the background tissue being in the imaging region and being other than a target of interest labeled by the selective second RF pulse,the first time and the second time being configured to be different according to a purpose of imaging to be performed by the preset MRI sequence controlling information;
image condition setting circuitry configured to display preset-able MRI sequence controlling information to a user;
sequence controlling circuitry configured to (a) set timings of the first RF pulse and the second RF pulse, based on preset information chosen by the user among information displayed by the image condition setting circuitry and (b) acquire magnetic resonance signals in the imaging region after a given time has passed since an RF pulse was applied to the labeling region; and
image generating circuitry configured to generate an image using the magnetic resonance signals.
2 Assignments
0 Petitions
Accused Products
Abstract
A magnetic resonance imaging apparatus according to an embodiment includes sequence controlling circuitry and image generating circuitry. The sequence controlling circuitry acquires magnetic resonance signals in an imaging region. The image generating circuitry generates an image. The sequence controlling circuitry sets timings of RF pulses such that a first time and a second time are different. Here, the first time is a time since an irradiation of a first RF pulse without selection of region until a start of acquisition. The second time is a time since an irradiation of a second RF pulse with selection of the labeling region until the start of acquisition. The second time is also a time for a liquid present in the labeling region to reach a desired position in the imaging region. The first time is also a time for longitudinal magnetization components of a background tissue to become substantially zero.
-
Citations
9 Claims
-
1. A magnetic resonance imaging (MRI) apparatus comprising:
-
data storage configured to store, as preset MRI sequence controlling information, a first time and a second time, the first time defining elapsed time since a non-selective first RF (radio frequency) pulse until start of MR signal acquisition, the second time defining elapsed time since a selective second RF pulse applied to a labeling region until the start of MR signal acquisition, the second time also being a time required for a liquid present in the labeling region at a timing of the second RF pulse to reach peripheral blood vessels in an imaging region, the first time also being a time for longitudinal magnetization components of a background tissue to become substantially zero, the background tissue being in the imaging region and being other than a target of interest labeled by the selective second RF pulse, the first time and the second time being configured to be different according to a purpose of imaging to be performed by the preset MRI sequence controlling information; image condition setting circuitry configured to display preset-able MRI sequence controlling information to a user; sequence controlling circuitry configured to (a) set timings of the first RF pulse and the second RF pulse, based on preset information chosen by the user among information displayed by the image condition setting circuitry and (b) acquire magnetic resonance signals in the imaging region after a given time has passed since an RF pulse was applied to the labeling region; and image generating circuitry configured to generate an image using the magnetic resonance signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeCanon Medical Systems Corporation (Canon Inc.), Toshiba Medical Systems Corporation (Canon Inc.)
-
Original AssigneeToshiba Medical Systems Corporation (Canon Inc.), Kyoto University
-
InventorsIsoda, Hiroyoshi, Fujimoto, Koji, Kusahara, Hiroshi
-
Primary Examiner(s)Arana, Louis M
-
Application NumberUS14/878,126Publication NumberTime in Patent Office1,300 DaysField of Search324306, 324307, 324309US Class CurrentCPC Class CodesA61B 5/0055 by applying suctionA61B 5/055 involving electronic [EMR] ...A61B 5/4244 liverA61B 5/4325 of the uterine cavities, e....A61B 5/704 TablesG01R 33/36 Electrical details, e.g. ma...G01R 33/543 Control of the operation of...G01R 33/5602 by filtering or weighting b...G01R 33/5607 by reducing the NMR signal ...G01R 33/5613 Generating steady state sig...G01R 33/56333 Involving spatial modulatio...G01R 33/5635 Angiography, e.g. contrast-...G01R 33/5673 Gating or triggering based ...
