Scanning bed and medical imaging device with scanning bed

Abstract

The invention provides a scanning bed and a medical imaging device with the scanning bed. A motor can be arranged at a position away from a magnet, so that it is avoided that the motor affects the regularity of a magnetic field and the linearity of a gradient field; meanwhile, double-stage transmission in which an annular belt and an opening belt are matched is used for improving the transmissionaccuracy. The scanning bed includes a support device, a driving source, a bed plate, a middle plate, the opening belt and the annular belt, the middle plate is fixedly connected with the opening belt,the bed plate is fixedly connected with the annular belt, the front end of the opening belt is provided with a first driving wheel connected with the driving source, so that the first driving wheel drives the middle plate to do forward and backward motion relative to the support device, and the driving source is arranged at the back end; the annular belt sleeves the middle plate and is connectedwith a first connecting piece fixed to the support device, so that the annular belt does synchronous motion when the middle plate does forward and backward motion relative to the support device, and then the bed plate is driven to do homodromous forward and backward motion relative to the middle plate.

Description

technical field [0001] The invention relates to the technical field of medical imaging equipment, in particular to a scanning bed and medical imaging equipment with the scanning bed. Background technique [0002] Existing medical imaging devices all have a scanning bed for carrying the examinee. The scanning bed used for the medical imaging device will be described below by taking the magnetic resonance imaging system as an example. [0003] Magnetic Resonance Imaging (MRI, Magnetic Resonance Imaging) is widely used in clinical medicine and scientific research, and it mainly includes magnets, gradient coils, radio frequency transmitting coils, radio frequency receiving coils and a scanning table carrying the object to be examined. The scanning bed is used to move the inspected object to the main magnet and gradient field generated by the magnet and gradient coils. The radio frequency transmitting coil excites the inspected object to generate magnetic resonance signals, and t...

AI Technical Summary

Problems solved by technology

[0011] In the first driving mode, the first-stage transmission adopts the rack and pinion transmission mode. Due to the limitation of this transmission mode, the driving motor must be arranged at a position very close to the magnet, and the motor and the shielding cover protecting the motor are both made of iron. Magnetic parts will have a relatively large impact on the uniformity of the magnetic field and the linearity of the gradient field, thereby affecting the imaging quality of the system

[0012] In the second driving mode, it includes three-stage transmission, and its transmission levels are many, so that the transmission accuracy is poor

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