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Image brightness adjustment system and method in magnetic resonance system

A technology of brightness adjustment and magnetic resonance, which is applied in the directions of using nuclear magnetic resonance image system for measurement, magnetic resonance measurement, and magnetic variable measurement, etc., which can solve the problems of loss of detail, loss of image gray level, and low image signal

Active Publication Date: 2018-01-12
SHENZHEN UNITED IMAGING HEALTHCARE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the brightness factor is set too high, it will cause image signal overflow, and if the brightness factor is set too low, the image signal will be too low, the gray level of the image will be lost, and the details will be lost

Method used

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  • Image brightness adjustment system and method in magnetic resonance system
  • Image brightness adjustment system and method in magnetic resonance system
  • Image brightness adjustment system and method in magnetic resonance system

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Embodiment Construction

[0030] Please refer to figure 1 as shown, figure 1 The main components of a magnetic resonance system 10 incorporating the present invention are shown, the system being controlled via an operator console 12 including a keyboard and / or other input device 13 , a control panel 14 and a display screen 16 . Console 12 is connected via connection 18 to a separate computer system 20 which enables an operator to control the generation and display of images on display screen 16 . The computer system 20 includes a number of modules communicating with each other through the backplane 20a, these modules include an image processor module 22, a CPU module 24 and a memory module 26, the memory module 26 can be a well-known in the industry for A framebuffer that stores groups of image data. The computer system 20 is connected to a hard disk 28 and a magnetic disk 30 for storing image data and programs, and is connected to an independent control system 32 through a high speed serial connecti...

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Abstract

The invention discloses an image brightness adjustment system used in a magnetic resonance system, which includes: a reconstruction module, which is used to combine signals from receiving coils to reconstruct an original image; a search module, which is used to search for the brightness range of the original image [ Smin, Smax]; the setting module is used to set the brightness limit F, wherein F<2N, and F takes a positive integer, and N is the number of bits of the image; the calculation module is used to calculate the brightness factor α, α=F / (Smax-Smin); conversion module, for utilizing formula Id=α*Ir, original image is converted into DICOM image, and wherein, Id is the brightness of DICOM image, and Ir is the brightness of original image. By automatically calculating the brightness factor in the present invention, the overflow of the brightness part of the image signal can be ensured, and at the same time, the maximum gray scale range of the magnetic resonance DICOM image can be utilized to the greatest extent.

Description

【Technical field】 [0001] The invention relates to an image brightness adjustment system and method in a magnetic resonance system. 【technical background】 [0002] Modern magnetic resonance imaging equipment usually uses multi-channel receiving coils for imaging. The signals received by multiple channels are combined and then converted into magnetic resonance images in the format of Digital Imaging Communications in Medicine (DICOM for short) for storage and transmission. For magnetic resonance DICOM images, they are usually stored as 12-bit integers, that is, the image has 4096 gray levels. The image after merging multi-channel data is called the original image, the format of the data is floating point type (single precision or double precision), and the brightness range of the signal varies greatly, it is necessary to set a proportional coefficient α (brightness factor) to be Raw images are converted into 12-bit integer DICOM data. If the brightness factor is set too hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/56
Inventor 张强杨伟伟
Owner SHENZHEN UNITED IMAGING HEALTHCARE CO LTD
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