JPH026006U

JPH026006U -

Info

Publication number: JPH026006U
Application number: JP8407788U
Authority: JP
Priority date: 1988-06-24
Filing date: 1988-06-24
Publication date: 1990-01-16

Description

[Brief explanation of drawings]

第１図ないし第６図はこの考案の第１実施例に
係り、第１図はＭＲＩ装置の縦断側面図、第２図
は患者ベツドの後方側から見た要部の正面図、第
３図は第２の電磁波シールドの概略的な形状を示
す斜視図、第４図は第２の電磁波シールドの姿勢
切り換えの具体的構造を示す側面図、第５図はそ
の正面図、第６図は頭部をスキヤン位置にセツト
した場合に第２の電磁波シールドを作用姿勢とし
た状態を示す縦断側面図である。第７図ないし第
９図は第２実施例に係り、第７図は患者ベツドの
後方側から見た概略正面図、第８図は要部の側面
図、第９図は第２の電磁波シールドの概略的な形
状を示す斜視図である。また、第１０図は第１の
従来例を示すＭＲＩ装置の縦断側面図、第１１図
は第２の従来例を示すＭＲＩ装置のベツド駆動部
の側面図である。１…ガントリ、１ａ…撮影空間、５…第１の電
磁波シールド、５ｂ…第１の電磁波シールドの後
方開口部、７…患者ベツド、１８，２７…第２の
電磁波シールド、１９，３２…第１のガイドレー
ル、２０，３１…第１のローラ、２１，３３…第
２のガイドレール、２２，３４…第２のローラ。 Figures 1 to 6 relate to the first embodiment of this invention, in which Figure 1 is a longitudinal side view of the MRI apparatus, Figure 2 is a front view of the main parts seen from the rear side of the patient bed, and Figure 3. is a perspective view showing the general shape of the second electromagnetic wave shield, Fig. 4 is a side view showing the specific structure for changing the posture of the second electromagnetic wave shield, Fig. 5 is its front view, and Fig. 6 is a head view. FIG. 6 is a longitudinal sectional side view showing the second electromagnetic wave shield in the operating position when the second electromagnetic wave shield is set in the scan position. Figures 7 to 9 relate to the second embodiment, where Figure 7 is a schematic front view of the patient's bed seen from the rear side, Figure 8 is a side view of the main parts, and Figure 9 is the second electromagnetic shield. FIG. Further, FIG. 10 is a longitudinal sectional side view of an MRI apparatus showing a first conventional example, and FIG. 11 is a side view of a bed driving section of an MRI apparatus showing a second conventional example. DESCRIPTION OF SYMBOLS 1... Gantry, 1a... Imaging space, 5... First electromagnetic shield, 5b... Rear opening of first electromagnetic shield, 7... Patient bed, 18, 27... Second electromagnetic shield, 19, 32... First guide rails, 20, 31...first rollers, 21, 33...second guide rails, 22, 34...second rollers.

Claims

[Scope of utility model registration request]

a first electromagnetic wave shield that covers an imaging space inside the gantry; a patient bed that is inserted into and removed from the gantry imaging space; and a rear opening of the first electromagnetic shield when the patient bed is inserted into the gantry imaging space; In the electromagnetic shielding mechanism of the MRI apparatus, the second electromagnetic shield is placed at the rear of the patient's bed in a storage position below the patient's bed and rotated above the patient's bed. An electromagnetic shielding mechanism for an MRI apparatus, characterized in that the mechanism is mounted so that it can be switched to an operating position in which it is combined with the first electromagnetic shield by sliding along the longitudinal direction of the bed.