US 8,984,684 B2Granted

Magnetic resonance imaging device

AssigneeHitachi Medical Corporation

InventorsAtsushi Ninomiya, Masaru Yokoyama, Kazuyuki Yanase, Manabu Yanagimoto, Takeshi Yatsuo, Hiroyuki Ohzeki

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Abstract

The magnetic resonance imaging device of the present invention includes a gantry and a bed part comprising a top panel, the gantry comprises a circumferential panel covering outer circumference of a tunnel-shaped static magnetic field space, and a front panel having an opening serving as entrance of a bore for the static magnetic field space, this front panel comprises an arc-shaped outer panel extending from an upper part of the opening serving as entrance of the bore to the ground plane via both sides of the opening, and an inner panel disposed inside the outer panel, a portion connecting the outer panel and the inner panel constitutes a top surface protruding forwardly, and the inner panel is formed in a recessed shape with a concave curved surface extending from the top surface to the opening serving as entrance of the bore.

Claims11

Dependent claims

A magnetic resonance imaging device comprising:

a gantry containing a static magnetic field generating source for forming a static magnetic field space;
and
a bed part having a top panel for placing a subject and inserting the subject into the static magnetic field space,
wherein the gantry includes a front panel having an opening serving as an entrance of an open-part for the static magnetic field space, and
at least a portion of the front panel around the opening is formed in a recessed shape,
wherein the front panel comprises an arc-shaped outer panel extending from a position above the opening and passing around both sides of the opening to a ground plane, and an inner panel disposed inside the arc-shaped outer panel, and
wherein a forwardly protruding top surface connects the outer panel and the inner panel, and the inner panel has a concave curved surface extending from the top surface to the opening to define the recessed shape of the front panel around the opening.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/811,998Filed 14 Jul 2011
Priority: JP 2010-22215430 Sep 2010
Published: US 2013/0184564 A118 Jul 2013
Granted: 24 Mar 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

A61B 5/704
Means for positioning the patient in relation to the detecting, measuring or recording means: tables
A61B 5/055
Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves:…
G01R 33/3806
Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field: open magnet assemblies for improved access to the…
G01R 33/381
Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field: using electromagnets