CN102841326A - Small-size radio frequency coil for experimental animal pancreas - Google Patents

Abstract

The invention discloses a small-size radio frequency coil for an experimental animal pancreas. The small-size radio frequency coil comprises a coil casing and a coil circuit inside the coil casing. The small-size radio frequency coil is characterized in that the small-size radio frequency coil is provided with a bed plate for supporting an animal body, wherein a support frame is mounted on the bed plate and connected with a support plate provided with a driving box; the driving box is connected with the arc coil casing through a plastic hose; and the coil circuit is formed by linearly arraying 4-6 square receiving channels and is bent to be arc like the coil casing. The small-size radio frequency coil can be arranged inside for use and can be tightly attached to the experimental animal pancreas for imaging, so that a receiving coil generates a uniform magnetic field and obtains a high signal-to-noise ratio, and further the imaging quality is effectively improved.

Description

A kind of Miniature RF coil that is used for animal used as test pancreas

Technical field

The present invention relates to a kind of radio-frequency coil that is used for magnetic resonance imaging system, particularly relate to a kind of animal used as test pancreas Miniature RF coil that is used for magnetic resonance imaging system.

Background technology

Animal coil is meant the animal of using in biology or medical science, the radio-frequency coil that carries out magnetic resonance imaging like pig, rabbit etc.In nuclear magnetic resonance image system (MRI), the homogeneity in the magnetic field that transmitting coil and receiving coil produced is a key factor that obtains high quality graphic.In general nuclear magnetic resonance image system, adopt whole-body radio frequency coil to obtain best exciting field homogeneity usually.Whole-body radio frequency coil is a radio-frequency coil maximum in the system.But, if, uses bigger coil to receive, then can produce lower signal to noise ratio (snr) to the internal organ of pig this relatively little position of pancreas for example, this mainly is because such receiving coil is far away with the signal generation tissue distance of participating in forming images.Though, can take out the means of abdomen for animal used as test, make whole-body radio frequency coil as far as possible near internal organs, because the whole-body radio frequency coil volume is relatively too big, can not stretch in the animal body, be difficult to evenly press close to required probe portion, actual image quality is not good.In addition, also not to the special-purpose coil of animal used as test pancreas, often use expensive human body integral radio-frequency coil at present, this causes damage on the one hand easily, does not also meet the health regulation simultaneously.Therefore, design a kind of special-purpose radio-frequency coil that is applicable to the magnetic resonance imaging of animal used as test pancreas, become an important problem.

Summary of the invention

For solving the above-mentioned deficiency that prior art exists; The purpose of this invention is to provide a kind of special-purpose radio-frequency coil that is applicable to the magnetic resonance imaging of animal used as test pancreas; Through design can built-in use the small coil device of corresponding animal used as test pancreas profile, realized that coil can fit tightly to be surveyed the position and be carried out to picture, make receiving coil produce uniform magnetic field; And obtain high signal to noise ratio (S/N ratio), thereby effectively improved image quality.

The present invention solves the problems referred to above that prior art exists; The technical scheme that adopts is: a kind of Miniature RF coil that is used for animal used as test pancreas, comprise coil case and inner coil circuit thereof, and it is characterized in that: the bed board that is provided with the support animals health; Bracing frame is housed on the bed board; Bracing frame connects the back up pad that drives box is housed, and drives box and connects the arc coil case through plastic flexible pipe, and the structural design of arc can satisfy effectively the fit requirement of animal pancreatic of coil; Coil circuit is made up of by line spread 4～6 square receiving cables, and is bent into coil case and has same arc, can guarantee the signal to noise ratio (S/N ratio) of each passage, and the FOV that adapts of formation and animal used as test pancreas size.

Said plastic flexible pipe has 2, connects side by side to drive box and coil case, can increase balance.

Said bed board both sides are provided with the stationary installation of animal.

The adjustable height of said back up pad is in order to adapt to the height of animal used as test.

Said coil circuit is a target property phased-array coil circuit.

During use coil is stretched in the experimental animals of opening abdomen, and fit, to reach best Effect on Detecting with pancreas.

The invention has the beneficial effects as follows: this coil can built-inly use; Can fit tightly animal used as test pancreas and be carried out to picture; Make receiving coil produce uniform magnetic field; And obtain high signal to noise ratio (S/N ratio), the resolution that can improve image reach the interlobular duct level (0.3～0.5mm), thus effectively improved image quality.

Description of drawings

Fig. 1 is a structural representation of the present invention.

Fig. 2 is that coil circuit of the present invention is arranged synoptic diagram.

Embodiment

Below in conjunction with accompanying drawing and embodiment, the present invention is described further.

A kind of Miniature RF coil that is used for animal used as test pancreas of the present invention as shown in Figure 1; Be provided with the bed board 1 of support animals health; Bracing frame 2 is housed on the bed board, and bracing frame connects the back up pad 4 thatdriving box 3 is housed, and drives box and connectsarc coil cases 6 through 2 plastic flexible pipes that are set up in parallel 5.Be provided with the fixedly snap close 7 of animal in the bed board both sides.The height of back up pad can be regulated throughknob 8, in order to adapt to the height of animal used as test.

Coil circuit of the present invention as shown in Figure 2, coil circuit by line spread, constitute target property phased-array coil circuit by 4～6 square receiving cables.Illustrated is the coil circuit that is made up of by line spread 4 square receiving cables.Coil circuit is bent into coil case has same arc; During use coil case being stretched into live body opens in the experimental animals of abdomen; Can fit tightly animal used as test pancreas and be carried out to picture; Make receiving coil produce uniform magnetic field, and obtain high signal to noise ratio (S/N ratio), thereby effectively improved image quality.

Claims (5)

1. Miniature RF coil that is used for animal used as test pancreas; Comprise coil case and inner coil circuit thereof; It is characterized in that: the bed board that is provided with the support animals health; Bracing frame is housed on the bed board, and bracing frame connects the back up pad that the driving box is housed, and drives box and connects the arc coil case through plastic flexible pipe; Coil circuit is made up of by line spread 4～6 square receiving cables, and is bent into coil case and has same arc.

2. a kind of Miniature RF coil that is used for animal used as test pancreas according to claim 1, it is characterized in that: plastic flexible pipe has 2, connects side by side to drive box and coil case.

3. a kind of Miniature RF coil that is used for animal used as test pancreas according to claim 1, it is characterized in that: the bed board both sides are provided with the stationary installation of animal.

4. a kind of Miniature RF coil that is used for animal used as test pancreas according to claim 1 is characterized in that: the adjustable height of back up pad.

5. a kind of Miniature RF coil that is used for animal used as test pancreas according to claim 1 is characterized in that: coil circuit is a target property phased-array coil circuit.

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