CN104545978A - Filter for CT machine - Google Patents

Filter for CT machine Download PDF

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Publication number
CN104545978A
CN104545978A CN201510025203.0A CN201510025203A CN104545978A CN 104545978 A CN104545978 A CN 104545978A CN 201510025203 A CN201510025203 A CN 201510025203A CN 104545978 A CN104545978 A CN 104545978A
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CN
China
Prior art keywords
unit
image
connected
ray
filter
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Application number
CN201510025203.0A
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Chinese (zh)
Inventor
董桂青
邢珺
Original Assignee
董桂青
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 董桂青 filed Critical 董桂青
Priority to CN201510025203.0A priority Critical patent/CN104545978A/en
Publication of CN104545978A publication Critical patent/CN104545978A/en

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Abstract

The invention provides a filter for a CT machine. The filter for the CT machine comprises an X rays detecting unit for emitting X ray beams and detecting the X ray beams, a conversion unit which is connected with the X rays detecting unit to convert detected simulation image information into digital image information, an image processing unit which is connected with the conversion unit to actuate tailoring, compressing and image enhancement processing for the digital image information, an image filtering unit which is connected with the image processing unit to filter each pixel related image information according to the image information related to the surrounding pixels, and a display unit which is connected with the image filtering unit to display the filtered image. The filter for the CT machine is simple and convenient to operate, relieves the pain of a patient, high in density and resolution ratio, and sensitive and reliable to find lesion as well as determining relative space position, size and quantity of the lesion, overcomes the problem of artifact occurring in shooting of the general CT machine, and is convenient to popularize and use.

Description

A kind of CT machine filter

Technical field

The present invention relates to technical field of medical instruments, particularly relate to a kind of CT machine filter.

Background technology

At present, computer tomography is widely used in the field such as medical science, industry, CT machine utilizes the x-ray bundle, gamma-rays, ultrasound wave etc. of Accurate collimation, the detector high with sensitivity together makes profile scanning one by one around a certain position of human body, there is sweep time fast, the features such as clear picture, can be used for the inspection of various diseases.In checking process, easily there is artifact in image, causes detection inaccurate.

Summary of the invention

The object of the embodiment of the present invention is to provide a kind of CT machine filter, and be intended to solve existing CT machine in checking process, image easily occurs artifact, causes and detects inaccurate problem.

The embodiment of the present invention is achieved in that CT machine filter comprises: X-ray detecting unit, converting unit, graphics processing unit, image filtering unit, display unit;

For launching x-ray bundle, and to the X-ray detecting unit that x-ray Shu Jinhang detects;

Be connected with X-ray detecting unit, for the analog image detected information being converted to the converting unit of digital image information;

Be connected with converting unit, for performing the graphics processing unit of cutting, compression, image enhancement processing to digital image information;

Be connected with graphics processing unit, for according to the image information that is associated with surrounding pixel to filter the image filtering unit of each pixel associated image information;

Be connected with image filtering unit, for the display unit that the image after filtration is carried out showing.

Further, described X-ray detecting unit comprises: high tension generator, X-ray tube, collimator, X-ray detector; High tension generator is connected with X-ray tube, and X-ray tube is connected with collimator, and collimator is connected with X-ray detector.

Further, described image filtering unit inside is provided with low-pass filter comparator and high-pass filter comparator.

High tension generator produces high pressure to X-ray tube, X-ray tube launches x-ray bundle, x-ray bundle certain part to human body scans by certain thickness aspect, when x-ray beam is to tissue, part ray is absorbed by tissue, and another part ray is received by detector through human body, the signal produced enters X-ray detector by collimator, because the density degree of the various tissue of human body is different, the penetration capacity of x-ray bundle is different, so the x-ray bundle that X-ray detector receives just has had difference.Converting unit, by received this discrepant ray signal, is transferred to graphics processing unit after changing digital information into, and graphics processing unit is used for performing cutting, compression, image enhancement processing to digital image information.Processed image at image filtering unit according to the image information that is associated with surrounding pixel to filter each pixel associated image information, the absolute value of each in calculated difference and low pass valve compare by low-pass filter comparator, the absolute value of each in calculated difference and high pass valve compare by high-pass filter comparator, if the absolute value of institute's calculated difference exceeds setting value, then ignore off-limits information, realize the filtration to artifact, image after filtration shows at display unit, obtains cross-sectional image.

The advantage that the present invention has and good effect are: this CT machine filter operation is easy, concerning no pain patient, its density, resolution are high, pathological changes very little in human body can be observed, the organ that direct display x-ray plain film cannot show and pathological changes, in discovery pathological changes, the relative tertiary location determining pathological changes, size, very responsive and reliable in number, eliminating the artifact that occurs in common CT machine shooting process for inscribing, being convenient to promote the use of.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of CT machine filter that the embodiment of the present invention provides;

In figure: 1, X-ray detecting unit; 1-1, high tension generator; 1-2, X-ray tube; 1-3, collimator; 1-4, X-ray detector; 2, converting unit; 3, graphics processing unit; 4, image filtering unit; 4-1, low-pass filter comparator; 4-2, high-pass filter comparator; 5, display unit.

Detailed description of the invention

In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, this present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain this present invention, and be not used in this present invention of restriction.Software module used by the present invention all belongs to known module, when buying hardware module, has been provided with this software module.There is not the innovation of software or method in the present invention.

Below in conjunction with drawings and the specific embodiments, application principle of the present invention is further described.Fig. 1 is the structural representation of a kind of CT machine filter that the embodiment of the present invention provides, and the embodiment of the present invention is achieved in that CT machine filter comprises: X-ray detecting unit 1, converting unit 2, graphics processing unit 3, image filtering unit 4, display unit 5;

For launching x-ray bundle, and to the X-ray detecting unit 1 that x-ray Shu Jinhang detects;

Be connected with X-ray detecting unit 1, for the analog image detected information being converted to the converting unit 2 of digital image information;

Be connected with converting unit 2, for performing the graphics processing unit 3 of cutting, compression, image enhancement processing to digital image information;

Be connected with graphics processing unit 3, for according to the image information that is associated with surrounding pixel to filter the image filtering unit 4 of each pixel associated image information;

Be connected with image filtering unit 4, for the display unit 5 that the image after filtration is carried out showing.

Further, described X-ray detecting unit 1 comprises: high tension generator 1-1, X-ray tube 1-2, collimator 1-3, X-ray detector 1-4; High tension generator 1-1 is connected with X-ray tube 1-2, and X-ray tube 1-2 is connected with collimator 1-3, and collimator 1-3 is connected with X-ray detector 1-4.

Further, described image filtering unit 4 inside is provided with low-pass filter comparator 4-1 and high-pass filter comparator 4-2.

High tension generator 1-1 produces high pressure to X-ray tube 1-2, X-ray tube 1-2 launches x-ray bundle, x-ray bundle certain part to human body scans by certain thickness aspect, when x-ray beam is to tissue, part ray is absorbed by tissue, another part ray is received by detector through human body, the signal produced enters X-ray detector 1-4 by collimator 1-3, because the density degree of the various tissue of human body is different, the penetration capacity of x-ray bundle is different, so the x-ray bundle that X-ray detector 1-4 receives just has had difference.Converting unit 2, by received this discrepant ray signal, is transferred to graphics processing unit 3 after changing digital information into, graphics processing unit 3 is for performing cutting, compression, image enhancement processing to digital image information.Processed image at image filtering unit 4 according to the image information be associated with surrounding pixel to filter each pixel associated image information, the absolute value of each in calculated difference and low pass valve compare by low-pass filter comparator 4-1, the absolute value of each in calculated difference and high pass valve compare by high-pass filter comparator 4-2, if the absolute value of institute's calculated difference exceeds setting value, then ignore off-limits information, realize the filtration to artifact, image after filtration shows at display unit 5, obtains cross-sectional image.

The advantage that the present invention has and good effect are: this CT machine filter operation is easy, concerning no pain patient, its density, resolution are high, pathological changes very little in human body can be observed, the organ that direct display x-ray plain film cannot show and pathological changes, in discovery pathological changes, the relative tertiary location determining pathological changes, size, very responsive and reliable in number, eliminating the artifact that occurs in common CT machine shooting process for inscribing, being convenient to promote the use of.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (3)

1. a CT machine filter, is characterized in that, this CT machine filter comprises: X-ray detecting unit, converting unit, graphics processing unit, image filtering unit, display unit;
For launching x-ray bundle, and to the X-ray detecting unit that x-ray Shu Jinhang detects;
Be connected with X-ray detecting unit, for the analog image detected information being converted to the converting unit of digital image information;
Be connected with converting unit, for performing the graphics processing unit of cutting, compression, image enhancement processing to digital image information;
Be connected with graphics processing unit, for according to the image information that is associated with surrounding pixel to filter the image filtering unit of each pixel associated image information;
Be connected with image filtering unit, for the display unit that the image after filtration is carried out showing.
2. CT machine filter as claimed in claim 1, it is characterized in that, described X-ray detecting unit comprises: high tension generator, X-ray tube, collimator, X-ray detector; High tension generator is connected with X-ray tube, and X-ray tube is connected with collimator, and collimator is connected with X-ray detector.
3. CT machine filter as claimed in claim 1, it is characterized in that, described image filtering unit inside is provided with low-pass filter comparator and high-pass filter comparator.
CN201510025203.0A 2015-01-20 2015-01-20 Filter for CT machine CN104545978A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510025203.0A CN104545978A (en) 2015-01-20 2015-01-20 Filter for CT machine

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Application Number Priority Date Filing Date Title
CN201510025203.0A CN104545978A (en) 2015-01-20 2015-01-20 Filter for CT machine

Publications (1)

Publication Number Publication Date
CN104545978A true CN104545978A (en) 2015-04-29

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6421411B1 (en) * 2001-05-10 2002-07-16 Ge Medical Systems Global Technology Company, Llc Methods and apparatus for helical image artifact reduction
US20050107691A1 (en) * 2000-04-07 2005-05-19 The General Hospital Corporation Methods for digital bowel subtraction and polyp detection
CN101032409A (en) * 2006-01-19 2007-09-12 Ge医疗系统环球技术有限公司 Image display apparatus and X-ray CT apparatus
CN101726501A (en) * 2008-10-20 2010-06-09 通用电气公司 Method and system for x-ray imaging
CN103156629A (en) * 2011-12-16 2013-06-19 佳能株式会社 Image processing apparatus, image processing method, and program

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050107691A1 (en) * 2000-04-07 2005-05-19 The General Hospital Corporation Methods for digital bowel subtraction and polyp detection
US6421411B1 (en) * 2001-05-10 2002-07-16 Ge Medical Systems Global Technology Company, Llc Methods and apparatus for helical image artifact reduction
CN101032409A (en) * 2006-01-19 2007-09-12 Ge医疗系统环球技术有限公司 Image display apparatus and X-ray CT apparatus
CN101726501A (en) * 2008-10-20 2010-06-09 通用电气公司 Method and system for x-ray imaging
CN103156629A (en) * 2011-12-16 2013-06-19 佳能株式会社 Image processing apparatus, image processing method, and program

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