CN209690488U - A kind of test macro of the SAR of medical magnetic resonance equipment - Google Patents

Abstract

The utility model discloses the test macros of the SAR of medical magnetic resonance equipment a kind of, including plating bracket, test die body and optical fiber temperature-measurement hole, the top of plating bracket is fixedly installed with test die body by backplate, test die body structure setting cylindrical, die body is tested by the first insulating, water tank and the second insulating composition, water tank is in hollow ring-shaped cylinder structure setting, water tank is arranged the outside for being fixedly mounted on the first insulating, it is arranged on the outside of water tank and the second insulating is installed, water tank offers water filling port far from the side of plating bracket, thread sealed closure is detachably installed on water filling port, water filling port side is equipped with optical fiber temperature-measurement hole；The utility model is structurally reasonable simple, can be applied to the medical magnetic resonance equipment that magnetic field strength reaches 3T, and the magnetic resonance equipment of various scan apertures can be used, this test is more intuitive accurate using calorimetry, it is small by external interference factor, influenced by temperature measuring equipment small, practicability is stronger.

Description

A kind of test macro of the SAR of medical magnetic resonance equipment

Technical field

The utility model relates to test device, in particular to a kind of test macro of the SAR of medical magnetic resonance equipment belongs to Magnetic resonance equipment the field of test technology.

Background technique

The radio frequency (RF) of medical magnetic resonance equipment is the main risk factors that are harmful to the human body.Medical magnetic resonance equipment manufacturer Need effective evaluation entire patient's specific absorption rate SAR (Specific Absorption Rate).International standard IEC60601-2- In 33-2002 " medical electrical equipment: medical diagnosis magnetic resonance equipment secure private requirement ", two kinds of feasible experiments are provided Method, pulse energy method and calorimetry, due to no suitably load and test macro, pulse energy is used in general manufacturer's selection Method carries out the evaluation of SAR, but due to pulse energy weak output signal, signal decaying converts amplitude very little after absorbing, SAR is caused to test Result error is larger, occur sometimes negative bias from unusual test result, practicability is poor.

Utility model content

The technical problems to be solved in the utility model is to overcome the deficiencies of existing technologies, and provides a kind of medical magnetic resonance equipment SAR test macro.

In order to solve the above-mentioned technical problem, the utility model provides the following technical solution:

A kind of test macro of the SAR of medical magnetic resonance equipment of the utility model, including plating bracket, test die body and light The top of fine thermometer hole, the plating bracket is fixedly installed with test die body, test die body knot cylindrical by backplate Structure setting, the test die body are made of the first insulating, water tank and the second insulating, and the water tank is in hollow Ring-shaped cylinder structure setting, the water tank are arranged the outside for being fixedly mounted on the first insulating, the outer sheath of the water tank If being equipped with the second insulating, the water tank offers water filling port far from the side of plating bracket, can on the water filling port Disassembly is equipped with thread sealed closure, and the water filling port side is equipped with optical fiber temperature-measurement hole, the inside of the water tank equipped with sodium chloride and Copper-bath.

As a kind of optimal technical scheme of the utility model, the chlorine for being equivalent to the load of 80kg human body is packed into the water tank Change sodium and copper-bath.

As a kind of optimal technical scheme of the utility model, there are two the backplate settings, and two backplates are symmetrical The two sides of test die body are mounted on, are fixedly installed with load-bearing strip between test die body and the plating bracket, the load-bearing is long There are two item settings, and two load-bearing strips are arranged between two backplates.

As a kind of optimal technical scheme of the utility model, the test die body is made of nonferromugnetic material.

As a kind of optimal technical scheme of the utility model, first insulating is set in solid cylindrical structure It sets, and first insulating and water tank concentric are arranged.

It is fixed on the plating bracket of the test die body opposite sides as a kind of optimal technical scheme of the utility model Handle is installed, and there are two the handle settings of the test die body side.

The utility model provides the test macro of the SAR of medical magnetic resonance equipment a kind of.Have compared with the prior art with It is lower the utility model has the advantages that

1, the test macro of the SAR of the medical magnetic resonance equipment is equipped with the water of sodium chloride and copper-bath by being arranged Case and optic fiber thermometer cooperate, and can be applied to the medical magnetic resonance equipment that magnetic field strength reaches 3T, various scan apertures Magnetic resonance equipment can be used, evaluate SAR relative to common pulse energy method, this test is using the more intuitive standard of calorimetry Really, the first insulating and the second insulating that water tank is arranged inside and outside, keep it small by external interference factor, are filled by thermometric It is small to set influence, test device is compact-sized to be rationally capable of providing the equivalent patient load of 80kg, can accurately measure RF energy conversion At temperature rise, accurate evaluation whole body SAR is horizontal, can be used for evaluating the level of medical magnetic resonance equipment whole body SAR, solves factory The SAR valuator device of family lacks problem, also tests house for third party and provides suitable SAR test system.

2, the test macro of the SAR of the medical magnetic resonance equipment, by being arranged between test die body and plating bracket Backplate and load-bearing strip improve the stability of this test device structure, and the sodium chloride and copper-bath that use do not have Volatile harmful gases will not be harmful to the human body, and will not damage to probe, practicability is stronger.

Detailed description of the invention

Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural side view of the utility model.

In figure: 1, plating bracket；2, die body is tested；3, backplate；4, the first insulating；5, water tank；6, second is heat-insulated Insulating layer；7, water filling port；8, optical fiber temperature-measurement hole；9, load-bearing strip；10, handle.

Specific embodiment

It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.

Embodiment

As shown in Figs. 1-2, a kind of test macro of the SAR of medical magnetic resonance equipment, including plating bracket 1, test die body 2 Test die body 2 is fixedly installed with by backplate 3 with the top in optical fiber temperature-measurement hole 8, the plating bracket 1, the test die body 2 is in Cylindrical structure setting, the test die body 2 is made of the first insulating 4, water tank 5 and the second insulating 6, described Water tank 5 is in hollow ring-shaped cylinder structure setting, and the water tank 5 is arranged the outside for being fixedly mounted on the first insulating 4, institute The outside for stating water tank 5, which is arranged, is equipped with the second insulating 6, and the water tank 5 offers water filling far from the side of plating bracket 1 Mouthfuls 7, thread sealed closure is detachably installed on the water filling port 7,7 side of water filling port is equipped with optical fiber temperature-measurement hole 8, the water The inside of case 5 is equipped with sodium chloride and copper-bath.

It is packed into the sodium chloride and copper-bath for being equivalent to the load of 80kg human body in the water tank 5, the backplate 3 is provided with Two, two backplates 3 are symmetrically mounted on the two sides of test die body 2, fixed between the test die body 2 and plating bracket 1 Load-bearing strip 9 is installed, there are two the settings of load-bearing strip 9, and two load-bearing strips 9 are arranged between two backplates 3, The test die body 2 is made of nonferromugnetic material, can be applied to the medical magnetic resonance equipment that magnetic field strength reaches 3T, institute The first insulating 4 is stated in solid cylindrical structure setting, and first insulating 4 and 5 concentric of water tank are arranged, Heat insulation and preservation effect is improved, is fixedly installed with handle 10, and the survey on the plating bracket 1 of test 2 opposite sides of die body There are two the settings of handle 10 of 2 side of die trial body, mobile convenient for the carrying manually to this test device.

Working principle: when the utility model is used, the thread sealed closure of personnel's opening water filling port 7 first, by sodium chloride It is infused in copper-bath in the water tank 5 of test die body 2, then personnel are by 10 transporting flat plate bracket 1 of handle, by plate support Frame 1 and test die body 2 are placed on magnetic resonance detection zone, and the radio frequency RF energy that magnetic resonance equipment generates will be effective by this test macro It absorbs, is converted into heat, open water filling port 7 and be inserted into the probe of optic fiber thermometer in water tank 5 by optical fiber temperature-measurement hole 8 and submerge liquid The temperature of interior carry out continuous temperature measurement, the continuous variation for monitoring fluid temperature in magnetic resonance detection zone water tank 5, monitoring can by calculating Accurately whole body SAR is obtained as a result, this test device is equipped with the water tank 5 and optical fiber temperature-measurement of sodium chloride and copper-bath by setting Instrument cooperation can be applied to the medical magnetic resonance equipment that magnetic field strength reaches 3T, the magnetic resonance equipment of various scan apertures It can be used, evaluate SAR relative to common pulse energy method, this test is more intuitive accurate using calorimetry, inside and outside water tank 5 The first insulating 4 and the second insulating 6 being arranged, keep it small by external interference factor, influenced by temperature measuring equipment it is small, Test device is compact-sized to be rationally capable of providing the equivalent patient load of 80kg, can accurately measure the temperature rise that RF energy is converted to, Accurate evaluation whole body SAR is horizontal, and backplate 3 and load-bearing strip 9 between test die body 2 and plating bracket 1 improve this test dress The stability of structure is set, practicability is stronger.

Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on, It should be included within the scope of protection of this utility model.

Claims (6)

1. a kind of test macro of the SAR of medical magnetic resonance equipment, it is characterised in that: including plating bracket (1), test die body (2) and optical fiber temperature-measurement hole (8), the top of the plating bracket (1) is fixedly installed with test die body (2) by backplate (3), described Die body (2) structure setting cylindrical is tested, the test die body (2) is by the first insulating (4), water tank (5) and second Insulating (6) composition, the water tank (5) are in hollow ring-shaped cylinder structure setting, and the water tank (5) is arranged fixed installation It is arranged on the outside of the outside of the first insulating (4), the water tank (5) and the second insulating (6), the water is installed Case (5) offers water filling port (7) far from the side of plating bracket (1), is detachably equipped with thread seal on the water filling port (7) Lid, water filling port (7) side are equipped with optical fiber temperature-measurement hole (8), and the inside of the water tank (5) is molten equipped with sodium chloride and copper sulphate Liquid.

2. the test macro of the SAR of medical magnetic resonance equipment according to claim 1 a kind of, it is characterised in that: the water The sodium chloride and copper-bath for being equivalent to the load of 80kg human body are packed into case (5).

3. the test macro of the SAR of medical magnetic resonance equipment according to claim 1 a kind of, it is characterised in that: the shield Plate (3) setting there are two, two backplates (3) be symmetrically mounted on test die body (2) two sides, the test die body (2) and It is fixedly installed between plating bracket (1) load-bearing strip (9), there are two load-bearing strip (9) settings, and two load-bearing are long Item (9) is arranged between two backplates (3).

4. the test macro of the SAR of medical magnetic resonance equipment according to claim 1 a kind of, it is characterised in that: the survey Die trial body (2) is made of nonferromugnetic material.

5. the test macro of the SAR of medical magnetic resonance equipment according to claim 1 a kind of, it is characterised in that: described One insulating (4) is in solid cylindrical structure setting, and first insulating (4) is set with water tank (5) concentric It sets.

6. the test macro of the SAR of medical magnetic resonance equipment according to claim 1 a kind of, it is characterised in that: the survey It is fixedly installed with handle (10) on the plating bracket (1) of die trial body (2) opposite sides, and the handle of described test die body (2) side There are two hand (10) settings.