CN1030036C - Equalization imaging method and apparatus for transmission diagnostic equipment - Google Patents
Equalization imaging method and apparatus for transmission diagnostic equipment Download PDFInfo
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- CN1030036C CN1030036C CN 93105109 CN93105109A CN1030036C CN 1030036 C CN1030036 C CN 1030036C CN 93105109 CN93105109 CN 93105109 CN 93105109 A CN93105109 A CN 93105109A CN 1030036 C CN1030036 C CN 1030036C
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Abstract
The present invention relates to method for balancing imaging for a soft tissue disease diagnosis device and a device for realizing the method. According to the present invention, average gray scale of actually obtained images and an upper threshold value and a lower threshold value of preset average gray scale are compared, and according to comparative results, the present invention can automatically regulate the gain of a video camera CCD device, a lens aperture of the video camera and the brightness of light sources until the gray scale values of the obtained images are arranged between the upper threshold value and the lower threshold value of the preset average gray scale. The device of the present invention comprises a sensor for detecting various parameters and a control device for regulating each parameter.
Description
The present invention relates to soft tissue abnormality's pathological changes transmission diagnostic imaging method and device thereof, particularly relate to method that makes soft tissue diseases's diagnostic transmission equipment automatic equalization imaging and the device of realizing this method.
Utilize radiating wideband bands of a spectrum of nonionic or narrow spectral band light, particularly the method for infrared transmission photograph diagnoses the abnormality in the soft tissue very general now.The method that has been extensive use of the infrared transmission photograph in the modern medical service diagnostic techniques is diagnosed the abnormality in the mammary gland, this method adopts wide band or narrow band infrared light to shine mammary gland to be checked, the light that transmits from mammary gland with the imaging device collection in the opposite side of radiation source, send in the computer again and handle, form simulated image and on display, show.The great advantage of this method is harmless to human body, observes intuitively, and detection mode is easy.
A kind of detection imaging method of soft tissue and device thereof are disclosed in the Chinese invention patent CN-90101352 that has authorized, with wide spectrum visible light and infrared diffused ray irradiation soft tissue, absorb the soft tissue image by CCD gamma camera with the angled placement of diffused light exit facet, resulting signal is the processing of machine as calculated, obtain the image greyscale difference at diseased region under a cloud and normal position, and diameter, projected area and the volume of calculating diseased region, judge the pathological changes situation quantitatively for the doctor.
A kind of TV transmission diagnostic equipment is disclosed in European patent EP-0108617, this device comprises that two emission wavelengths are the light source probe of 300nm to 2000nm, the detector of the light that collection transmits from detected tissue, one is used to show the display of the image that is obtained by said photo-detector and the recording equipment of a record gained image.
The living tissue device of a kind of inspection human body is disclosed in international monopoly WO-88/08272, this device also comprises transmitting and receiving hyperacoustic probe except comprising the light source probe that can launch infrared light and being used for receiving the TV camera and computer image processing system of the light that transmits from checked tissue.
Although above all kinds of patents is each tool advantage all, but they also all have a shortcoming, be exactly also to absorb in the process of image with the detected soft tissue of infrared light irradiation each time, all need to regulate one by one the brightness of used light source, the aperture of gamma camera, focal length, and the gain of CCD device, guaranteeing average gray value the best of gained image, otherwise may fail to pinpoint a disease in diagnosis inadequately or the situation of mistaken diagnosis owing to resulting image definition.And owing to accept the different of people's the difference at age of work up and bodily tissue compactness extent, make when detecting, each above-mentioned value of consult volume must be set with varying with each individual.This that is to say can not for all people selected one group generally be fit to videotape parameter.Yet this image quality optimal results of seeking is not that each uses the people of this device to obtain, and this depends on that user is about the training level of this device operation and his medical science level.This ubiquitous phenomenon has had influence on being adopted widely of this type of diagnostic equipment.In the medical department of bringing into use this diagnostic equipment, because the gap of operator's level can not effectively be brought into play the diagnosis capability of diagnostic equipment reality.Even operator's level is higher, but because above-mentioned adjustment process is time-consuming, make that the efficient of diagnosis is not high, especially when carrying out big mass survey, poor efficiency is undesirable.
In order to overcome the defective in the prior art, the object of the present invention is to provide a kind of light-source brightness that passes through to regulate automatically, the gain of CCD gamma camera focal length, aperture and CCD device is with method that reaches the equalization imaging purpose and the device of realizing said method.
The implication of said here " equilibrium " is to instigate the average gray value of gained image in optimum range.
Essence of the present invention is that " specialist system " that use the diagnostic equipment itself to be had replaces the adjusting of the various parameters that common operator relates to the judgement of image quality with when absorbing image.
Method of the present invention comprises the following steps:
A. use the detected soft tissue of light source irradiation, and absorb the light that transmits with the CCD gamma camera from said soft tissue, the processing of process computer image processing system changes visual image into and is presented in the display;
B. utilize the light-source brightness pick off that is installed between light source probe and the detected soft tissue to survey the brightness of said light source, the lens aperture characteristic amount sensor that utilization is installed in the gamma camera detects said lens aperture characteristic quantity, the CCD gain characteristics quantity sensor that utilization is installed on the gamma camera CCD device detects said CCD gain characteristics amount, utilizes the average gray value that is arranged on the average gray sensor record gained image in the image-processing system;
C. with detected light-source brightness, the lens aperture characteristic quantity, the average gray value signal of CCD gain characteristics amount and the said image that recorded is sent in the data blood processor;
D. with the upper and lower threshold ratio of the average gray value of gained image and predefined average gray by said data processing equipment;
E. according to the result of said comparison among the step D, said data processing equipment sends and controls signal to control device, automatically regulate the size of said lens aperture, CCD gain and light-source brightness, be in said going up between the lower threshold value up to the average gray value of gained image.
Soft tissue diseases's diagnosis equalization imaging device of realizing the inventive method comprises at least:
Light source probe is used to shine detected soft tissue;
The CCD gamma camera is used for absorbing the light that transmits from said detected soft tissue;
Computer image processing system is installed in the main frame of diagnostic device, is used for the image that said gamma camera obtains is handled, and changes it into visual image;
Display links with said computer image treatment device, is used to show the image that can show various useful informations after treatment;
Said equalization imaging device also comprises:
The light-source brightness pick off is installed between said light source probe and the detected soft tissue, is used for the brightness of the light that detection light source sends;
Camera lens aperture characteristic amount sensor is installed on the said gamma camera, is used to detect the size of said lens aperture;
Gamma camera CCD device gain characteristic amount sensor is arranged on the said CCD device, is used to detect the size of said CCD device gain;
The image averaging gray-scale sensor links with said computer image processing system, is used to write down the average gray of the image that is obtained;
A data blood processor, be connected with computer image processing system with said light-source brightness detecting element, camera lens aperture characteristic amount sensor, CCD device gain pick off, image averaging gray-scale sensor respectively, be used to receive each parameter signals by said light-source brightness detecting element, camera lens aperture characteristic amount sensor, CCD device gain pick off, the output of image averaging gray-scale sensor, and to the input each value of consult volume and predefined value compare, according to result relatively, export control signal again;
The light source brightness control device is used for regulating and controlling according to the control signal of said data processing equipment output the brightness of said light source;
Camera lens aperture regulation device, the size of said lens aperture is regulated and controlled to the control signal that is used for exporting according to said data processing equipment;
CCD device gain regulation device, the size of said CCD device gain is regulated and controlled to the control signal that is used for exporting according to said data processing equipment;
The present invention has been owing to adopted the method for equalization imaging described above, makes to utilize the quality of the detection image that nonionic radiant light diagnostic transmission equipment obtained to be no longer dependent on the height of operator's level, and can remain on " expert " level.And, greatly shortened in the past the operator for regulating the needed time of each parameter because adjusting of method of the present invention each device parameter when making imaging is all finished automatically by computer control.We can say that the present invention has maximally utilised the ability of diagnostic device, improved accurate rate of diagnosis and efficient.
In following content, desirable substantive features of the present invention are helped in the detailed description of in conjunction with the drawings embodiments of the invention being done.
Fig. 1 is for being used for the operation principle sketch map of the infrared transmission image device of diagnosis of breast disease in the prior art;
Fig. 2 is used for the operation principle sketch map of equipment shown in Figure 1 for method and apparatus of the present invention;
Fig. 3 is the sketch map of one embodiment of the present of invention;
Fig. 4 is the flow chart of a preferred embodiment running of the inventive method;
Fig. 5 is the structural representation of light source probe in the device of the present invention;
Fig. 6 is a kind of sketch map that improves structure of the supervisory keyboard shown in Fig. 5;
As shown in Figure 1, infrared mammary gland medical diagnosis on disease equipment in the prior art generally comprises the light source probe that is used to shine detected breast, be used for absorbing the gamma camera of the formed image of light that scatters out from detected tissue, and the computer image processing system (being installed in the diagnostic apparatus main frame) that the image that is obtained is handled and be used to show for the display of diagnosis with image.The front was mentioned, and the quality of such image that equipment provided uses for diagnosis can't guarantee, it depends on operator's the training level of equipment and his medical science level.This defective has influenced accurate rate of diagnosis and efficient significantly.The present invention will overcome this defective exactly.
Fig. 2 has represented that method and apparatus of the present invention is used for the operation principle sketch map of equipment shown in Figure 1.As shown in the figure, with light source probe irradiation breast to be detected, absorb the light that from illuminated breast, transmits with the gamma camera that is arranged on the relative side of detected tissue with radiation source, formed picture intelligence is admitted in the computer image processing system to be handled, and shows in display.Meanwhile, be installed in the brightness of the light that the intravital light-source brightness detecting element of the anterior leaded light of light source probe B detection light source sent; Be installed in the size of the lens aperture characteristic amount sensor A detection camera lens aperture in the gamma camera; The CCD gain characteristics quantity sensor G that links to each other with CCD device in the gamma camera detects the size of the gain of CCD device; Image averaging gray-scale sensor (not shown) in the computer image processing system is noted the average gray value of the image that obtains; Above-mentioned each parameter that records is output among the data processing equipment PC.Data processing equipment PC will compare with predefined average gray upper threshold value and lower threshold value from the average gray value of image averaging gray-scale sensor input.The upper threshold value of said average gray and lower threshold value are according to the summary of the graphic materials of thousands of cases and definite by the inventor, every average gray value is in the quality of the image between said upper threshold value and the lower threshold value and all can trusts, therefore, also above-mentioned pre-set threshold scope is called " expert's value ".Data processing equipment PC outputs control signals to gamma camera CCD device gain regulation device C1 according to the result of said comparison, gamma camera aperture regulation device C2 and light source brightness control device C3, suitably regulate each parameters respectively by above-mentioned three regulation devices, just in time be between said average gray upper threshold value and the lower threshold value up to the average gray value of the image that is obtained.The device that links to each other with said data processing equipment PC also comprises the supervisory keyboard K that is installed on the light source probe shell, go up different buttons by keyboard K, the operator can select automatic adjustable parameter or manual adjustments parameter, and the manual adjustments light-source brightness, the locking of control parameter and visual freezing.The implication of said here " locking " is for to remain on each parameter on the determined value, and this normally is the insignificant variation of being avoided some parameter in the continuous detecting process.Here said " freezing " means the image that will be presented on the display and remains and be stored in the video memory.In addition, in Fig. 2, also drawn and be used to store the case history storage device M of frozen image and each value of consult volume relevant with this image, be used to print the printing equipment that detects graphic materials, and the computer service system S that is used for nurse and doctor's communication and provides case history to seek advice from.Obviously, expect for those of ordinary skill in the art is not so difficult, said various pick offs, regulation device and auxiliary facilities can adopt any suitable equipment in the prior art.
In device of the present invention, except having aforesaid various sensing device, also comprise the temperature sensor that is used for the detection light source probe temperature, the pick off that is used to detect the pick off of camera lens focal length and is used for the testing environment brightness.As shown in Figure 3, this is the signal and the transfer of data dynamic schematic diagram of one embodiment of the present of invention.Seven kinds of pick offs that relate among the figure comprise gamma camera CCD device gain characteristic amount sensor, image averaging gray-scale sensor, light-source brightness pick off, camera lens aperture characteristic amount sensor, camera lens focal length pick off, light source probe temperature sensor, and environmental luminance sensor.Related regulation device comprises gamma camera CCD device gain regulation device, light source brightness control device, camera lens aperture regulation device and camera lens focal length regulation device.The part that dotted line surrounded among the figure promptly is the data processing equipment PC shown in Fig. 2, and the conversion of signals that it is exported each pick off by the multichannel analog-digital converter becomes digital signal, sends into then among its data processing unit CPU to compare and treat.According to the control signal process digital-to-analogue conversion that comparative result is exported, deliver in each regulation device, with the relevant value of consult volume of automatic adjusting.Fixed parameter can deposit among the data memory M.Seven kinds of related among Fig. 3 parameters not all are essential, wherein have only gamma camera CCD device gain characteristic quantity, the image averaging gray scale, and light-source brightness, camera lens aperture characteristic quantity is essential.Remaining parameter is just as the reference parameter.When device work of the present invention, can demonstrate these seven parameters on the display at any time.
Fig. 4 has provided the flow chart of a most preferred embodiment of the inventive method.
In step 101, the operator determines according to the definition of image whether the lens focus of gamma camera suitable, as improper, enters into step 102, regulates lens focus, returns step 101 again, determine that lens focus is suitable after, enter step 201.In fact because the camera lens that is adopted is generally the camera lens of shorter focal length, the field depth of such camera lens itself is enough big, need not to go to adjust after roughly mixing up when detecting usually again.So step 101 and 102 is normally omissible.In step 201, the average gray value of the actual image that obtains is compared by the upper threshold value with predefined average gray.Be not more than said upper threshold value if comparative result is the average gray value of image, then enter step 601.Otherwise, if the average gray value of image then enters step 301 greater than predefined upper threshold value.In step 301, the CCD device gain value that is obtained by gamma camera CCD device gain characteristic amount sensor is compared by the minima with its working area, if actual CCD yield value has been a minima, then enters step 401.If actual CCD yield value does not reach minima as yet, then enter step 302, data processing equipment PC exports control signal, and commander CCD gain regulation device C1 reduces the gain of CCD automatically.The scope of the working area of above-mentioned CCD device is artificial the setting, normally selects one section best in CCD operate as normal district fiducial value as step 301.The amplitude of regulating the CCD gain in the step 302 and in the step 702 of back also is artificial setting and adjustable, it is fixed that this is that the size of the contribution that the image averaging gray scale changed according to the adjusting of CCD gain is got, for example, CCD best effort selected in the step 301 can be divided into ten sections, regulate the amplitude that one section size is all only regulated in the CCD gain in step 302 and in the step 702 of back each time.After the step 302, turn back to step 201.If the image averaging gray value that obtains once more is not more than the upper threshold value that sets, then enter step 601.If the average gray value of image still greater than the upper threshold value that sets, then repeats step 301,302 and step 201, up to the average gray value of gained image no longer greater than the upper threshold value that sets.Enter step 601 then.Unless in step 301, the gain of determining CCD has been minimum, then enters step 401.In step 401, the lens aperture number that is recorded by the lens aperture characteristic amount sensor that is arranged on the gamma camera is compared with the possible minimum aperture of camera lens, if actual lens aperture number has been minimum, then enters step 501.If actual lens aperture number then enters step 402 greater than the minimum light number of turns.In step 402, data processing equipment PC reduces the one-level aperture to lens aperture regulation device C2 output control signal, returns step 201 then.So repeatedly, no longer greater than the upper threshold value that sets, then enter step 601 up to the average gray value of gained image.Unless determine that in step 401 actual lens aperture number has been minimum, the step 501 that then enters the back.In step 501, light source brightness control device C3 will reduce the brightness of light source after receiving the control command signal of data processing equipment PC output step by step.Less than the upper threshold value that sets, enter step 601 up to the average gray value of resulting image afterwards.In step 601, the image averaging gray value that records is compared by the lower threshold value with predefined average gray, if comparative result shows that the image averaging gray scale of this moment then enters step 602 greater than the lower threshold value that sets.If the average gray value of image then enters step 701 less than the lower threshold value that sets.In step 701, data processing equipment PC with this moment the CCD device gain feature value that records compare with the maximum in CCD device best effort district, be maximum if CCD at that time gains, then enter step 801.Otherwise enter step 702, according to the value that the mode identical with the step 302 of front regulated said CCD gain, just the direction of regulating is opposite, is to increase the CCD gain step by step, and then enters step 601.Carry out so repeatedly, the average gray value of resulting image enters step 602 then greater than the lower threshold value that sets on display.Unless when the CCD of reality gain had reached maximum, the average gray value of resulting image then entered following step 801 still less than the lower threshold value that sets.In step 801, judge whether lens aperture at that time is maximum, in this way, just enters step 901, as not being, then then enter step 802, increasing the one-level aperture, and then get back to step 601.So circulation, up to the average gray of resulting image greater than the lower threshold value that sets, then enter step 602, only aperture has reached maximum, and resulting image averaging gray value then enters step 901 still less than the lower threshold value that sets, in this step, light-source brightness is increased step by step, is not less than the lower threshold value that sets until the average gray value of the image that is obtained, and then also enters step 602.When proceeding to step 602 usually, the image averaging gray scale that is obtained has been in the optimum scope, promptly reach the standard of " expert's value ", at this moment, if desired the image on the current screen is preserved, just can enter step 604 fully, freeze (or fixed auspicious) device by image image is stored in order to investigating or having printed.But the inventive method also provides and has allowed the function of operator's manual fine-tuning light-source brightness.If promptly the operator feels that image still is not very satisfactory, can convert the parameter regulative mode to manual mode by the automatic/hand switching key on the light source probe shell, finely tune the brightness of light source then with light source brightness regulation button, till satisfaction.If in conjunction with another invention " device of soft tissue diseases diagnosis memory represents image formation method and this method of realization " of the inventor, the operator can feel, chooses and keeps the best in quality visual more convenient.
Figure 5 shows that the structural representation of used light source probe in one embodiment of the present of invention.
As shown in Figure 5, light source probe 1 of the present invention mainly is made of shell 2, light conductor 3, light source 4, reflector 5, light source control device 6, fan 7 and cable more than 8 parts.The shape of light source probe 1 and size are to design according to being fit to hand-held standard.Probing shell 2 is made by lighttight heat-barrier material.Light conductor 3 is a kind of organic material with excellent heat insulation property, particularly light transmission, and its side 11 is coated with the light-proof material layer, preferably, coats one deck total reflection film.The light that light source 4 sends is launched forward with the form of approximate directional light under the effect of reflector, preferably, reflector is to be made by the material that can absorb the light of visible light wave range in a large number, and the optical band of so actual outgoing is to concentrate in the useful 700-900nm scope of transmission photograph.The light that light source sends enters in the light conductor through the light conductor rear surface 12 of printing opacity, penetrate from the front surface of light conductor, the front surface 9 of light conductor and rear surface 12 provide one from the logical light path of probe inner light source outside probe, comparatively convenient for the use that makes probe, the front surface 9 of light conductor and rear surface 12 have a certain degree with the direction of the light beam that light source 4 sends.The effect of light source control device 6 is the brightness of the light that sends of regulation and control light source, it is connected with supervisory keyboard 20 on being installed in probing shell 2 by line 16, main control button comprises manual adjusting switching key 17, and this key is used for the manual adjustments light-source brightness and regulates the light-source brightness function conversion automatically; Brightness increases button 18, and brightness reduces button 19, and the brightness of the enough step-less adjustment light sources of these two bond energys reaches the purpose that makes clear image by regulating light-source brightness.Because used light source 4 can give out a large amount of heats at short notice, for user and the detected person of not burning, exhaust fan 7 has been installed at probe 1 rear portion, its effect is that the heat that light source 4 produces is extracted out, 1 rear portion dissipates from popping one's head in.As we can see from the figure, in probe 1 forward shell 2, also has one deck inner shell 14, form a hollow layer between inner shell 14 and the shell 2, in the zone of shell 2, have many through holes 15 near the probe middle part, in the forward zone of inner shell 14 approaching probes, also have many through holes 13 simultaneously, after fan 7 starts, produce present suction force backward, under the effect of this suction, the outer air of probe enters hollow layer between shell 2 and the inner shell 14 from through hole 15, it is anterior to enter probe from through hole 13 again, the heat heating that is produced by light source here, at last, the air of heating is discharged from the through hole 21 of probe afterbody by fan 7, thereby is reached for the purpose of probe heat radiation.
In order to make the detected soft tissue can be by more in large area, irradiation more equably, the inventor carries out roughening to the light conductor light output surface of the probe front end that normally polished by strictness in the prior art and handles, a kind of mode wherein is its surface to be worn into the shape of similar clouded glass, countless small diffuse scattering surfaces so just on the light output surface of light source probe, have been formed, make the emergent light of light source probe become diffusion light, thereby increased the outgoing solid angle and the outgoing uniformity of light of light greatly by the original diffuse scattering that is similar to directional light process roughening treatment surface.Make light source can shine more large-area mammary gland tissue equably with same light-source brightness.The present invention can also carve mill with the light conductor surface of probe front end, makes said surface become interlaced by the parallel burr of at least two group regular distribution and reticulate pattern shape that form.Thereby the light from the light conductor outgoing is produced intensive scattering process, increased the distribution three-dimensional viewpoin and the uniformity of emergent light.About the above-mentioned improvement inventor another application for a patent for invention has been proposed simultaneously.
In addition, as can be seen from the figure, on the intravital suitable position of the forward leaded light of probe, also be provided with the pick off 10 that is used for detection probe emitting brightness and probe temperature, nature, said pick off can be selected any suitable pick off in the prior art for use.According to the present invention, the brightness of the light that this pick off 10 detects said light source at any time and sent and near the temperature of probe light-emitting window, and the signal of telecommunication of representative light-source brightness that will produce and probe temperature outputs among the said data processing equipment PC by transmission line.
In the present invention, light source control device 6 can be by two kinds of working method runnings, a kind of is to increase under the control that button 18 and brightness reduces button 19 step by step or the brightness of the said light source 4 of step-less adjustment in manual brightness, another kind be under the control of the control signal of said data processing equipment PC output step by step or the brightness of the said light source of step-less adjustment.The conversion of these two kinds of working methods is finished by manual switching key 17.
In another embodiment of the present invention, the control button on the said supervisory keyboard 20 has manual switching key 17 incessantly, and light-source brightness increases button 18 and brightness reduces button 19, also includes other function key.As shown in Figure 6, on supervisory keyboard 120, except manual switching key 117 is arranged, light-source brightness increases button 118 and brightness reduces outside the button 119, the image that also is useful on maintenance and memory image freezes (fixed auspicious) button 122, and the image that this key is about to when pressing on the current indicator screen maintains and is stored among the video memory M.Comprise that in addition visual parameter reproduces button 123 and parameter locking button 124, wherein visual parameter reproduces the imaging parameters that button 123 is used for realizing over the image of a certain case history and is reproduced in the current imaging procedures.Said visual parameter or imaging parameters all refer to the said light-source brightness in front, camera lens aperture characteristic quantity and gamma camera CCD device gain characteristic quantity.As for said lens focus characteristic quantity, probe temperature and environmental light brightness also just showed as the reference amount in detection originally, so need not reproduce them in representational role.About above-mentioned " reproduction imaging system " inventor another application for a patent for invention has been proposed also.Imaging parameters locking button 124 is used for pinning with each definite imaging parameters in testing process, prevents the frequent unhelpful variation of imaging parameters when the operator moves light source probe.
The front was mentioned, and various pick offs that adopted in the device of the present invention and regulation device can use any components and parts and method that can realize the various operation principles of required function in the prior art.So be not described in detail them in this application.
Should be noted that; the present invention is not limited only to the content of specific embodiment described above; any one those of ordinary skill in the art can expect; under design of the present invention and the prerequisite that do not depart from the scope of the present invention; can also make many useful improvement and variation, these all belong to protection scope of the present invention.
Claims (16)
1, a kind of method that is used to make the equipment automatic equalization imaging of diagnosing soft tissue diseases, said diagnostic device comprises the light source of emission nonionic radiant light, gamma camera, computer image processing system and image diplay is characterized in that: method of the present invention comprises the following steps:
A. use the detected soft tissue of light source irradiation, and absorb the light that transmits with the CCD gamma camera from said soft tissue, the processing of process computer image processing system changes visual image into and is presented in the display;
B. utilize the light-source brightness pick off that is installed between light source probe and the detected soft tissue to survey the brightness of said light source, the lens aperture characteristic amount sensor that utilization is installed in the gamma camera detects said lens aperture characteristic quantity, the CCD gain characteristics quantity sensor that utilization is installed on the gamma camera CCD device detects said CCD gain characteristics amount, utilizes the average gray value that is arranged on the average gray sensor record gained image in the image-processing system;
C. with detected light-source brightness, the lens aperture characteristic quantity, the average gray value signal of CCD gain characteristics amount and the said image that recorded is sent in the data blood processor;
D. with the upper and lower threshold ratio of the average gray value of gained image and predefined average gray by said data processing equipment;
E. according to the result of said comparison among the step D, said data processing equipment sends and controls signal to control device, automatically regulate the size of said lens aperture, CCD gain and light-source brightness, repeating step B, C, D are in said going up between the lower threshold value up to the average gray value of gained image again.
2, the method for claim 1, it is characterized in that: in said step e, if result among the step D relatively shows, the average gray value of said gained image is greater than said predefined upper threshold value among the step B, then said data processing equipment at first sends and controls signal to gamma camera CCD device gain regulation device, reduce the gain of said CCD device step by step, up to the average gray of gained image less than said upper threshold value.
3, method as claimed in claim 2, it is characterized in that: if the gain of said CCD device has been minima, but the average gray of gained image is still greater than said upper threshold value, then send and control signal to camera lens aperture regulation device by said data processing equipment, reduce said lens aperture number step by step, up to the average gray of gained image less than said upper threshold value.
4, method as claimed in claim 3, it is characterized in that: if said F-number has been minima, but the average gray of gained image is still greater than said upper threshold value, then send and control signal to the light source brightness control device by said data processing equipment, reduce the brightness of said light source step by step, up to the average gray of gained image less than said upper threshold value.
5, the method for claim 1, it is characterized in that: in said step e, if result among the step D relatively shows, the average gray value of said gained image is less than said predefined lower threshold value among the step B, then said data processing equipment at first sends and controls signal to gamma camera CCD device gain regulation device, increase the gain of said CCD device step by step, up to the average gray of gained image greater than said upper threshold value.
6, method as claimed in claim 5, it is characterized in that: if the gain of said CCD device has been maximum, but the average gray of gained image is still less than said lower threshold value, then send and control signal to camera lens aperture regulation device by said data processing equipment, increase said lens aperture number step by step, up to the average gray of gained image greater than said lower threshold value;
7, method as claimed in claim 5, it is characterized in that: if said F-number has been maximum, but the average gray of gained image is still less than said lower threshold value, then send and control signal to the light source brightness control device by said data processing equipment, increase the brightness of said light source step by step, up to the average gray of gained image greater than said lower threshold value.
8, as each described method in the claim 1 to 7, it is characterized in that: when the average gray of gained image has been between the said upper and lower threshold value, but the also brightness of the said light source of manual fine-tuning, so that the gained image is the best in quality.
9, method as claimed in claim 8 is characterized in that: detected parameter also comprises lens focus, probe temperature, and environmental light brightness.
10, method as claimed in claim 9 is characterized in that: all detected parameters all are presented on the display, and are stored in the video memory together with frozen image.
11, realize comprising at least as soft tissue diseases's diagnosis equalization imaging device of the described method of claim 1 to 10:
Light source probe is used to shine detected soft tissue;
The CCD gamma camera is used for absorbing the light that transmits from said detected soft tissue;
Computer image processing system is installed in the main frame of diagnostic device, is used for the image that said gamma camera obtains is handled, and changes it into visual image;
Display links with said computer image treatment device, is used to show the image that can show various useful informations after treatment;
It is characterized in that: said equalization imaging device also comprises:
The light-source brightness pick off is installed between said light source probe and the detected soft tissue, is used for the brightness of the light that detection light source sends;
Camera lens aperture characteristic amount sensor is installed on the said gamma camera, is used to detect the size of said lens aperture;
Gamma camera CCD device gain characteristic amount sensor is arranged on the said gamma camera CCD device, is used to detect the size of said CCD device gain;
The image averaging gray-scale sensor links with said computer image processing system, is used to write down the average gray of the image that is obtained;
Data processing equipment, be connected with computer image processing system with said light-source brightness detecting element, camera lens aperture characteristic amount sensor, CCD device gain pick off, image averaging gray-scale sensor respectively, be used to receive each parameter signals by said light-source brightness detecting element, camera lens aperture characteristic amount sensor, CCD device gain pick off, the output of image averaging gray-scale sensor, and to the input each value of consult volume and predefined value compare, according to result relatively, export control signal again;
The light source brightness control device is used for regulating and controlling according to the control signal of said data processing equipment output the brightness of said light source;
Camera lens aperture regulation device, the size of said lens aperture is regulated and controlled to the control signal that is used for exporting according to said data processing equipment;
CCD device gain regulation device, the size of said CCD device gain is regulated and controlled to the control signal that is used for exporting according to said data processing equipment.
12, equalization imaging device as claimed in claim 11, it is characterized in that: it also comprises the probe temperature pick off, camera lens focal length pick off, environmental luminance sensor and camera lens focal length regulation device.
13, as claim 11 or 12 described equalization imaging devices, it is characterized in that: it also comprises: be used for the supervisory keyboard of imaging procedures control operation, said supervisory keyboard links with said light source probe and data processing equipment respectively.
14, equalization imaging device as claimed in claim 13, it is characterized in that: it also comprises video memory, computer service system and printer.
15, equalization imaging device as claimed in claim 14 is characterized in that: said light-source brightness pick off is installed in the intravital suitable position of said light source probe front end leaded light.
16, equalization imaging device as claimed in claim 15, it is characterized in that: said supervisory keyboard is installed on the said light source probe, control button on the said supervisory keyboard comprises manual switching key, image freezes button, light-source brightness increases button, light-source brightness reduces button, and imaging parameters reproduces button and parameter locking button.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93105109 CN1030036C (en) | 1993-05-04 | 1993-05-04 | Equalization imaging method and apparatus for transmission diagnostic equipment |
| AU51738/93A AU5173893A (en) | 1993-05-04 | 1993-10-19 | Method and apparatus for examining tissue by transillumination using near infrared light |
| PCT/CA1993/000441 WO1994024927A1 (en) | 1993-05-04 | 1993-10-19 | Method and apparatus for examining tissue by transillumination using near infrared light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93105109 CN1030036C (en) | 1993-05-04 | 1993-05-04 | Equalization imaging method and apparatus for transmission diagnostic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1076101A CN1076101A (en) | 1993-09-15 |
| CN1030036C true CN1030036C (en) | 1995-10-18 |
Family
ID=4985557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93105109 Expired - Fee Related CN1030036C (en) | 1993-05-04 | 1993-05-04 | Equalization imaging method and apparatus for transmission diagnostic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1030036C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100399013C (en) * | 2001-04-17 | 2008-07-02 | 株式会社岛津制作所 | Radiation testing device and radiation testing method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103211607B (en) * | 2013-04-28 | 2015-06-03 | 北京东方惠尔图像技术有限公司 | X-ray machine, control device thereof and device thereof |
| CN113125346A (en) * | 2021-04-19 | 2021-07-16 | 唐山学院 | Surface defect detection system classification group optimization method based on area array light source |
| CN113252683A (en) * | 2021-04-19 | 2021-08-13 | 唐山学院 | Material grouping optimization method of cold-rolled strip steel surface detection system |
| CN113281341A (en) * | 2021-04-19 | 2021-08-20 | 唐山学院 | Detection optimization method of double-sensor surface quality detection system of hot-dip galvanized strip steel |
-
1993
- 1993-05-04 CN CN 93105109 patent/CN1030036C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100399013C (en) * | 2001-04-17 | 2008-07-02 | 株式会社岛津制作所 | Radiation testing device and radiation testing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1076101A (en) | 1993-09-15 |
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