The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 2003
Filed:
Jan. 19, 2001
Hiromitsu Takamori, Otawara, JP;
Ayumi Katsunuma, Otawara, JP;
Hitoshi Kanazawa, Utsunomiya, JP;
Takeshiro Suzuki, Otawara, JP;
Seiji Nozaki, Otawara, JP;
Masatoshi Hanawa, Otawara, JP;
Yoshio Machida, Nasu-gun, JP;
Masaaki Yamanaka, Otawara, JP;
Masao Yui, Otawara, JP;
Kabushiki Kaisha Toshiba, Kawaski, JP;
Abstract
A magnetic resonance imaging apparatus generates an MR signal from an object by applying a gradient field pulse generated by a gradient field coil and a high-frequency magnetic field pulse generated by a high-frequency coil to the object in a static field, and reconstructs an image on the basis of the MR signal. The gradient field coil is housed in a sealed vessel. The internal air in the sealed vessel is exhausted by the pump to prevent noise. By controlling the operation of the pump using a control circuit, noise in imaging operation can be reduced more effectively.