CN203328712U - PET-CT split type rod source shielding mechanism - Google Patents
PET-CT split type rod source shielding mechanism Download PDFInfo
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- CN203328712U CN203328712U CN201320428486XU CN201320428486U CN203328712U CN 203328712 U CN203328712 U CN 203328712U CN 201320428486X U CN201320428486X U CN 201320428486XU CN 201320428486 U CN201320428486 U CN 201320428486U CN 203328712 U CN203328712 U CN 203328712U
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Abstract
The utility model discloses a PET-CT split type rod source shielding mechanism. The PET-CT split type rod source shielding mechanism comprises a fixed shield supporting frame, a movable shield supporting frame, a fixed shield and a movable shield. The fixed shield supporting frame is fixed to a rack. The fixed shield is arranged on the fixed shield supporting frame. The movable shield supporting frame is connected with the rack through a bearing. The movable shield is arranged on the movable shield supporting frame. A rod source is arranged in the movable shield. The fixed shield is fixed, the movable shield moves and rotates along with the rod source, the shields with a half width rotate along with the rod source, the space of a bore diameter occupied by the shields is reduced, the space of the shields with the half width can be saved, and therefore the diameter of a patient hole is effectively enlarged, and meanwhile sensitivity and the resolution ratio are improved. The PET-CT split type rod source shielding mechanism is low in cost and simple in structure.
Description
Technical field
This utility model relates to medical instruments field, is specifically related to the split type excellent source of a kind of PET-CT shielding body.
Background technology
Multi-modal molecular image technology can realize the mutual supplement with each other's advantages of different images equipment, make the image result obtained more accurately, more reliable.Clinical practice proves, and multi-modal molecular medicine image documentation equipment was examined early and controlled, plays an important role in the checking of the formulation of therapeutic scheme, therapeutic effect and assessment in the morning of major disease.Positron emission tomography (Positron Emission Tomography) PET has very high detectivity, with the x-ray tomography imaging that structural information can be provided (X-ray Computed Tomography), X-ray CT is merged into individual equipment PET-CT, is widely used.
PET in PET-CT, the collimator ring set is in detector rings, and detector rings is fixed on support.During scanning, excellent source, in the collimator ring, is scanned around surveying the body rotation, the radiation gamma ray, and gamma ray, through surveying body, receives gamma ray by detector, thereby carries out transmission scan.Because excellent source has radioactivity, therefore excellent source need be arranged in shield.When needs scan, excellent source is stretched out and is entered in the collimator ring from shield, in the collimator ring, rotates, and after completing scanning, excellent source is retracted in shield.The rod source rotates in the collimator ring, and the space in the excellent source of rotation is removed in the space in detector rings, in the remaining useful space, patient is checked, forms the patient hole.
In actual applications, patient Kong Yue great, patients' feeling is better, and the inspection effect that can carry out is better.In existing PET-CT product item R&D process, in the situation that detector is finalized the design, (diameter that is exactly detector rings is fixed) need to meet the client and the diameter in patient hole be greater than to the requirement of 700mm, such as the location before radiotherapy in the treatment, the aperture of PET part needs and the aperture of CT part is complementary; Simultaneously, detector rings is less, and sensitivity and resolution are just higher, patient Kong Yao great, and the aperture of detector rings is little, and this has just caused contradiction between two.In prior art, the realization of shield has two kinds of structures: the one, and shield is external, not with the rotation of excellent source, needs the mechanical hand of a complexity to finish the work; Another kind is that shield plays the supporting role to excellent source, and excellent source and shield are integral type, and shield rotates with excellent source.Former structure is complicated, cost is high, need to join the mechanical hand ability execution of a complexity, and fault rate is relatively high; Latter's shield also plays the supporting role to excellent source, shield support stick source rotates in the collimator ring, form the effective shielding to the radioactivity in excellent source, shield has certain thickness, with regard to the relative aperture that has reduced the patient hole, this structure is difficult to reduce the diameter of detector rings or the diameter in expansion patient hole like this.
The utility model content
For above problems of the prior art, this utility model provides the split type excellent source of a kind of PET-CT shielding body.
The purpose of this utility model is to provide the split type excellent source of a kind of PET-CT shielding body.
The split type excellent source of PET-CT of the present utility model shielding body comprises: fixed shield bracing frame, motion shield bracing frame, fixed shield and motion shield; Wherein, the fixed shield bracing frame is fixed on frame; Fixed shield is arranged on the fixed shield bracing frame; Motion shield bracing frame is connected with frame by bearing; The motion shield is arranged on motion shield bracing frame; The rod source is arranged on the motion shield.Motion shield and fixed shield form a complete alpha ray shield body.
Motion shield bracing frame is ring-type, diameter is less than the collimator ring, motion shield bracing frame is connected with frame by bearing, drive motion shield bracing frame by bearing and rotate in the collimator ring, thereby drive motion shield and excellent source mounted thereto rotates around the collimator ring.Shield comprises motion shield and fixed shield, is hood-like, and when not needing to scan, motion shield and fixed shield become an integral body, the inside by the shielding of excellent source at the two; When needs rod source is scanned, stretch out from shield in excellent source, and bearing drives the rotation of motion shield bracing frame, thereby motion shield and excellent source are rotated scanning in the collimator ring.
In this utility model, when the rod source is scanned, the shield in shielding support stick source, half maintains static, and half,, along with the rotation of moving together of excellent source, only has the shield of a half thickness along with excellent source rotates, reduced shield taking up room in aperture, can save the space of shield one half thickness, thereby effectively enlarge the diameter in patient hole, improve sensitivity and resolution simultaneously.
Advantage of the present utility model:
Shield of the present utility model comprises motion shield and fixed shield, fixed shield maintains static, the motion shield is along with the rotation of moving together of excellent source, only has the shield of a half thickness along with excellent source rotates, reduced shield taking up room in aperture, can save the space of shield one half thickness, thereby effectively enlarge the diameter in patient hole, improve sensitivity and resolution simultaneously.The split type excellent source of PET-CT of the present utility model shielding body, owing to not using expensive complicated mechanical hand, so low cost of manufacture, and simple in structure.
The accompanying drawing explanation
The structural representation of the embodiment that Fig. 1 is the split type excellent source of PET-CT of the present utility model shielding body.
The specific embodiment
Below in conjunction with accompanying drawing, by embodiment, this utility model is described further.
As shown in Figure 1, the PET in PET-CT, collimator ring 6 is enclosed within detector rings 7, and detector rings 7 is fixed on support 8, and excellent source 1, in collimator ring 6, is scanned around surveying the body rotation.The split type excellent source of the PET-CT of the present embodiment shielding body comprises: fixed shield bracing frame 1, motion shield bracing frame 2, fixed shield 3 and motion shield 4; Wherein, 1 of fixed shield support is fixed on frame 8; Fixed shield 3 is arranged on fixed shield bracing frame 1; Motion shield bracing frame 2 is connected with frame 8 by bearing; Motion shield 4 is arranged on motion shield bracing frame 2; Rod source 1 is arranged in motion shield 4.
When not needing to scan, motion shield 4 and fixed shield 3 become an integral body, the inside by 5 shieldings of excellent source at the two; When needs rod source 5 is scanned, stretch out from shield in excellent source 5, and bearing drives 2 rotations of motion shield bracing frame, thereby motion shield 4 and excellent source 5 are rotated scanning in collimator ring 7.
The shield in shielding support stick source, half maintains static, half is along with the rotation of moving together of excellent source, only has the shield of a half thickness along with excellent source rotates, reduce shield taking up room in aperture, can save the space of shield one half thickness, expanded the diameter in patient hole to the D2 that knows clearly from D1, thereby effectively enlarge the diameter in patient hole, carry simultaneously and guaranteed sensitivity and resolution.
The radioactivity Ge68 pole that the rod source is several millimeters of diameters, skin is surrounded by the metal protection skin.Common customer demand patient hole is greater than 700mm, meets multiple inspection, such as the location before radiotherapy in the treatment.Motion shield 4 and fixed shield 3 are respectively the semicircle cover that diameter is 60 millimeters.The material of shield is highdensity tungsten alloy, and the thickness of shield is greater than monolateral more than 28 millimeters.
Finally it should be noted that, the purpose of publicizing and implementing mode is to help further to understand this utility model, but it will be appreciated by those skilled in the art that: in the spirit and scope that do not break away from this utility model and appended claim, various substitutions and modifications are all possible.Therefore, this utility model should not be limited to the disclosed content of embodiment, and the scope that the claimed scope of this utility model defines with claims is as the criterion.
Claims (4)
1. the split type excellent source of a PET-CT shielding body, PET in described PET-CT, collimator ring (6) is enclosed within detector rings (7), detector rings (7) is fixed on support (8), rod source (5) is in collimator ring (6), scanned around surveying the body rotation, it is characterized in that, the split type excellent source of described PET-CT shielding body comprises: fixed shield bracing frame (1), motion shield bracing frame (2), fixed shield (3) and motion shield (4); Wherein, fixed shield bracing frame (1) frame is fixed on frame (8); Fixed shield (3) is arranged on fixed shield bracing frame (1); Motion shield bracing frame (2) is connected with frame (8) by bearing; Motion shield (4) is arranged on motion shield bracing frame (2); Rod source (5) is arranged in motion shield (4).
2. the split type excellent source of PET-CT as claimed in claim 1 shielding body, is characterized in that, described motion shield bracing frame (2) is ring-type, and diameter is less than collimator ring (6).
3. the split type excellent source of PET-CT as claimed in claim 1 shielding body, is characterized in that, described motion shield (4) and fixed shield (3) are hood-like.
4. the split type excellent source of PET-CT as claimed in claim 1 shielding body, is characterized in that, described motion shield (4) and fixed shield (3) form a complete alpha ray shield body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320428486XU CN203328712U (en) | 2013-07-15 | 2013-07-15 | PET-CT split type rod source shielding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320428486XU CN203328712U (en) | 2013-07-15 | 2013-07-15 | PET-CT split type rod source shielding mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203328712U true CN203328712U (en) | 2013-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320428486XU Expired - Lifetime CN203328712U (en) | 2013-07-15 | 2013-07-15 | PET-CT split type rod source shielding mechanism |
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| Country | Link |
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| CN (1) | CN203328712U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104414671A (en) * | 2013-09-02 | 2015-03-18 | 上海联影医疗科技有限公司 | Shielding component, manufacturing method of shielding component and PET (positron emission tomography) system |
| CN104840214A (en) * | 2015-03-16 | 2015-08-19 | 山西锦地裕成医疗设备有限公司 | Bar source storing, mounting and demounting device for medical detector |
| CN106344059A (en) * | 2016-09-20 | 2017-01-25 | 沈阳东软医疗系统有限公司 | Method for correcting consistency of output signals of PET (positron emission tomography) detector and system applied to method |
-
2013
- 2013-07-15 CN CN201320428486XU patent/CN203328712U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104414671A (en) * | 2013-09-02 | 2015-03-18 | 上海联影医疗科技有限公司 | Shielding component, manufacturing method of shielding component and PET (positron emission tomography) system |
| CN104414671B (en) * | 2013-09-02 | 2018-08-03 | 上海联影医疗科技有限公司 | Shielding element, its manufacturing method and PET system |
| CN104840214A (en) * | 2015-03-16 | 2015-08-19 | 山西锦地裕成医疗设备有限公司 | Bar source storing, mounting and demounting device for medical detector |
| CN106344059A (en) * | 2016-09-20 | 2017-01-25 | 沈阳东软医疗系统有限公司 | Method for correcting consistency of output signals of PET (positron emission tomography) detector and system applied to method |
| CN106344059B (en) * | 2016-09-20 | 2020-01-07 | 东软医疗系统股份有限公司 | PET detector output signal consistency correction method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |