CN2462856Y

CN2462856Y - Multi-focus ratating anode CT ball tube

Info

Publication number: CN2462856Y
Application number: CN 00254947
Authority: CN
Inventors: 郝天然; 唐素玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-09-18
Filing date: 2000-09-18
Publication date: 2001-12-05
Anticipated expiration: 2010-09-18

Abstract

The utility model relates to a multi-focus rotating anode CT ball tube, which relates to a CT machine regarded as a medical diagnosis device. The multi-focus rotating anode CT ball tube is composed of a cathode in a tube shell with a high vacuum and an anode which is corresponding to the cathode and is rotated at a high speed. The cathode is provided with n groups of filaments (n is a natural number) which are arranged along one direction Z. A target body corresponding to the cathode forms a cylinder shape. The target body is provided with n focus surfaces corresponding to the n groups of filaments. Rotors A, B are respectively arranged on both ends of the target body. The direction of a rotary shaft of the anode is parallel to the arrangement direction of the filaments.

Description

Many focuses rotating anode CT bulb

This utility model relates to a kind of CT machine as medical diagnosis equipment.

Present prior art, CT bulb have one a group of cathode filament and a corresponding with it rotating anode focus face, can only launch a taper X wire harness from focus to the window direction simultaneously, and the CT machine can only be done the scanning of single beam line; For accelerating CT scan speed, electron beam ct has adopted the X line emission system of the complexity of electron gun and four scoring ring compositions, and its shortcoming is to involve great expense, and the maintenance cost height can not be widely adopted.

This utility model provides a kind of structure and manufacturing process simple, the useful X wire harness of matter equivalent taper such as a plurality of that can be simultaneously be parallel to each other to window direction launching centre line from a plurality of focuses, and the number of emission X wire harness can be selected at random.

But many focuses of this utility model rotating anode CT bulb is made of the anode that the negative electrode in the shell of high vacuum reaches corresponding with it high speed rotating.Negative electrode has n group filament (n is a natural number), along an equidistant or non-equidistant arrangement of direction Z; Every group of filament comprises 1 or 2 or a plurality of filament, and filament one termination negative electrode, the other end bulb that goes between out is respectively controlled which filament work of which group filament for you to choose; Each organizes filament and collection, and to penetrate the groove parameter identical.Anode have with corresponding n focus face of n group filament around one week of target body, target body is cylindrical shape, two ends respectively have a rotor by bearing fixing in shell; Anode rotating shaft direction is parallel with filament orientation Z; " V " type groove for alleviating target body weight, dug around target body one week in the non-focus face of target body target surface zone through the target surface technical finesse in target surface and the corresponding focus face of each group filament zone; The inclination angle of focus face is α.

Because it is corresponding along each focus face of n group filament and anode that straight line is arranged, it is identical and be in the same duty that each organizes the filament parameter, the useful X wire harness of matter equivalent taper such as a plurality of that a plurality of focuses can be simultaneously be parallel to each other to window direction launching centre line, and the number of emission X wire harness can be selected at random; Because a plurality of focuses work simultaneously, correspondingly shortened single focus face stream time, prolong the bulb life-span; Because shell is fixed at the anode two ends, the CT bulb is firmer, is more suitable for rapid CT scanning.

This utility model embodiment is explained as follows in conjunction with the accompanying drawings:

Fig. 1 is that this utility model is seen profile from the window direction.

Fig. 2 is that profile is seen in this utility model side (from filament orientation Z).

Fig. 1 represents that n group filament is along the equidistant or non-equidistant arrangement of Z direction.Respectively there are a rotor A, B in cylindrical shape target body two ends, and the rotating shaft direction is parallel with filament orientation Z, and anode focus face is corresponding with n group filament respectively.Electron beam e flies to target surface from the filament edge with the vertical direction Y of Z.Target body " V " type dotted line is expressed as and alleviates " V " shape groove that target body weight is dug.

Fig. 2 represents that electron beam e flies to the anode target surface from cathode filament, and X represents useful X wire harness centerline direction, and focus face inclination angle is α.

Implement best way of the present utility model and be negative electrode and organize respectively that filament is equidistant to be arranged along a direction, every group of filament comprises 2 filaments, filament one termination negative electrode, the other end bulb that goes between out respectively, which filament work of selective which group filament; The corresponding equidistant arrangement of anode focus face with filament, " V " shape groove is dug in non-focus face zone, alleviates target body weight; The target body two ends respectively have a rotor by bearing fixing in shell, increase CT bulb robustness.When cathode filament group number and anode focus face are 1, then become a kind of novel Biangulix.

Claims

1, many focuses rotating anode CT bulb of the useful X wire harness of matter equivalent taper such as a plurality of that are parallel to each other of a kind of line of launching centre simultaneously, but the anode that is reached corresponding with it high speed rotating by the negative electrode in the shell of high vacuum constitutes, it is characterized in that negative electrode has n group filament to arrange along a direction, the anode target body is cylindrical shape, target surface has and corresponding n focus face of n group filament, respectively there is a rotor at the target body two ends, and anode rotating shaft direction is parallel with the orientation of n group filament.

2, many focuses rotating anode CT bulb according to claim 1 is characterized in that negative electrode has n group filament along an equidistant or non-equidistant arrangement of direction, and every group of filament comprises 1 or 2 or a plurality of filament.

3, many focuses rotating anode CT bulb according to claim 1, it is characterized in that having on the target body target surface of anode cylindrical shape with corresponding n focus face of n group filament around one week of target body, for alleviating target body weight, non-focus area is dug " V " shape groove, around one week of target body.

4, many focuses rotating anode CT bulb according to claim 1 is characterized in that respectively there is a rotor at anode target body two ends, respectively by bearing fixing in shell, the orientation of anode rotating shaft direction and n group filament is parallel.

5, many focuses rotating anode CT bulb according to claim 1 is characterized in that cathode filament is 1 group and corresponding anode when being a focus face, then becomes a kind of novel Biangulix.