Magnetic resonance system and method
AssigneeHitachi, Ltd.
InventorsYoshitaka BITO, Hisaaki OCHI
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Abstract
The invention provides a magnetic resonance system and method of measuring continuous regions at high speed without decreasing SN. As a receive system, multiple RF coil sets a, b comprising multiple RF coils a1, a2, b1, b2 are disposed in positions where there is no spatial interference with at least one of the RF coils of an adjacent coil set, the RF coils constituting each coil set are changed over one by one, sets of RF coils which do not interfere mutually are activated, and signals are simultaneously acquired from a number of regions equivalent to the number n of coil sets. Hence, if the number of coil sets is set to n, the measurement time can be shortened to 1/n. Alternatively, the SN can be improved by in times.
Claims19
A magnetic resonance system, comprising a static magnetic field generation system, an RF transmitter which transmits a nuclear magnetic signal to an object placed in the static magnetic field, an RF receiver which receives a nuclear magnetic resonance signal from said object, and a signal processing system which generates an image and/or spectrum of said object using the nuclear magnetic resonance signal received by said RF receiver, wherein:
- said RF receiver comprises multiple receive units and multiple coil sets connected to each of said multiple receive units, and wherein:
- each coil set comprises multiple RF coils and is disposed in a position which does not spatially interfere with at least one RF coil of the respectively adjacent coil sets of said multiple RF coils, and further comprises a switch controller which controls ON-OFF of said RF coils to sequentially switch one of the multiple RF coils forming each coil set to ON, a coil switch which selectively connects one of said multiple RF coils to said receive unit, and a coil controller which controls said switch controller and said coil switch.
A magnetic resonance measurement method which transmits an RF field to an object placed in a static magnetic field, receives a nuclear magnetic resonance signal from said object, and generates an image and/or a spectrum of said object using said nuclear magnetic resonance signal received by an RF receiver, said method repeatedly performing:
- a step for transmitting RF to the object;
- and
- a step for switching one RF coil of multiple coil sets comprising multiple RF coils to ON, and simultaneously receiving a nuclear magnetic resonance signal for each coil set,
- while sequentially changing over the RF coil which is switched to ON, and generating an image and/or a spectrum of said object using the nuclear magnetic resonance signal received by the multiple RF coils of each coil set.
Dependencies are inferred from the claim text.