CN108703765B - Photodetector in medical equipment, detection method and device thereof, and computer readable storage medium - Google Patents
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Abstract
The embodiment of the invention provides an optical detector in medical equipment, a detection method and a detection device thereof, and a computer readable storage medium, relates to the technical field of medical treatment, and can determine whether the optical detector generates damage or not based on the attenuation effect of an optical detection chip, so that the damaged optical detection chip can be correspondingly processed, and the imaging quality of the medical equipment can be improved. The optical detector comprises at least one optical detection module, each optical detection module comprises at least one optical detection chip, and the specific optical detector detection method comprises the following steps: collecting the light sensing response data of each light detection chip within a specified time before and after the light source stops irradiating; judging whether the attenuation index parameters of each optical detection chip meet preset requirements or not according to the photosensitive response data; and when the attenuation index parameter of any one optical detection chip is judged to not meet the preset requirement, determining that the optical detection chip is damaged. The technical scheme provided by the embodiment of the invention is suitable for the detection process of the medical equipment based on the optical detector imaging.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of medical treatment, in particular to an optical detector in medical equipment, a detection method and a detection device thereof and a computer readable storage medium.
[ background of the invention ]
Medical equipment such as a CT (Computed Tomography) machine or an X-ray machine performs imaging based on X-ray irradiation, and in such medical equipment, an X-ray detector is required to receive X-rays and finally generate a medical image. The X-ray detector is one of the most main components of medical instruments such as a CT machine and an X-ray machine, and directly determines the imaging effect of the CT machine and the X-ray machine. In the processing process of the X-ray detector, processes such as ultrasonic waves and plasma are generally used for cleaning relevant parts, and in the cleaning process, the X-ray detector may be damaged due to resonance and the like, so that artifacts appear in medical images generated by the CT machine and the X-ray machine.
In the prior art, damage detection is not performed on a photodetector (such as an X-ray detector) in a medical device, so that a medical image generated based on the damaged photodetector has an artifact, thereby seriously affecting the imaging quality of the medical device.
[ summary of the invention ]
In view of this, embodiments of the present invention provide an optical detector in a medical device, a detection method and apparatus thereof, and a computer-readable storage medium, which can detect damage of the optical detector, thereby reducing an imaging artifact of the optical detector and improving imaging quality.
In a first aspect, an embodiment of the present invention provides a method for detecting a light detector in a medical device, where the light detector includes at least one light detection module, and each light detection module includes at least one light detection chip, where the method includes:
collecting the light sensing response data of each light detection chip within a specified time before and after the light source stops irradiating;
judging whether the attenuation index parameters of each optical detection chip meet preset requirements or not according to the photosensitive response data;
and when the attenuation index parameter of any one optical detection chip is judged to not meet the preset requirement, determining that the optical detection chip is damaged.
The above-described aspects and any possible implementations further provide an implementation in which the photoresponse data includes relative intensity data of the photoresponse current.
As to the above-mentioned aspect and any possible implementation manner, there is further provided an implementation manner, where the attenuation index parameter includes an attenuation duration, and the determining, according to the photosensitive response data, whether the attenuation index parameter of each optical detection chip meets a preset requirement includes:
after the light source stops irradiating, determining the recovery time of each light detection chip, wherein the recovery time is the corresponding time of each light detection chip when the relative intensity of the photosensitive response current is the intensity threshold;
integrating the relative intensity data of the photosensitive response current between the illumination stopping time and the recovery time of the light source to obtain an integration result, and determining that the attenuation time of the light detection chip does not meet the preset requirement when the integration result is greater than or equal to a preset value; alternatively, the first and second electrodes may be,
and when the recovery time is later than or equal to a preset time, determining that the attenuation time of the optical detection chip does not meet the preset requirement.
As to the above-mentioned aspect and any possible implementation manner, there is further provided an implementation manner, where the attenuation index parameter includes an attenuation duration, and the determining, according to the photosensitive response data, whether the attenuation index parameter of each optical detection chip meets a preset requirement includes:
determining the relative intensity data of the photosensitive response current of each optical detection chip at a designated moment after the light source stops irradiating, and recording the data as reference intensity;
and when the reference intensity is greater than or equal to the preset intensity, determining that the attenuation time of the optical detection chip does not meet the preset requirement.
The above-described aspect and any possible implementation manner further provide an implementation manner, where after the determining that the optical detection chip generates the damage, the method further includes:
responding to the position adjustment of the optical detection module where the optical detection chip is located by a user, and updating data of the optical detector after the position adjustment; alternatively, the first and second electrodes may be,
and responding to the replacement of the optical detection module where the optical detection chip is located by a user, and updating data of the replaced optical detector.
The above aspects and any possible implementations further provide an implementation in which the light detector is an X-ray detector.
In a second aspect, an embodiment of the present invention provides an apparatus for detecting a light detector in a medical device, where the light detector includes at least one light detection module, each of the light detection modules includes at least one light detection chip, and the apparatus includes:
the acquisition unit is used for acquiring the light sensing response data of each light detection chip within a specified time before and after the light source stops irradiating;
the judging unit is used for judging whether the attenuation index parameters of each optical detection chip meet preset requirements or not according to the photosensitive response data;
and the determining unit is used for determining that the optical detection chip is damaged when the attenuation index parameter of any optical detection chip is judged to not meet the preset requirement.
In a third aspect, an embodiment of the present invention provides a detection apparatus for an optical detector in a medical device, where the apparatus includes an acquisition instrument, a processor, and a memory; the acquisition instrument is configured to acquire data, and the memory is configured to store instructions that, when executed by the processor, cause the processor to implement the method of any of the above aspects and any possible implementation.
In a fourth aspect, an embodiment of the present invention provides an optical detector in a medical device, where the optical detector performs detection by using the method according to any one of the above aspects and any possible implementation manner, and an optical detection chip generating damage in the optical detector is located at an edge position in an X direction.
In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, which includes computer-readable instructions, when read and executed by a computer, cause the computer to perform the method according to any one of the above aspects and any possible implementation manner.
The embodiment of the invention provides an optical detector in medical equipment, a detection method and a detection device thereof, and a computer readable storage medium, wherein a light source in a response waveband of the optical detection chip is used for irradiating each optical detection chip, photosensitive response data of the optical detection chip in a specified time length before and after the light source stops irradiating is collected, whether attenuation index parameters of each optical detection chip meet preset requirements or not is judged based on the photosensitive response data, if the attenuation index parameters of any optical detection chip do not meet the preset requirements, attenuation signals generated by attenuation effect can form artifacts when the optical detector images, so that the imaging quality is reduced, and whether the optical detector is damaged or not can be determined based on the attenuation effect of the optical detection chip. The method and the device for detecting the optical detector provided by the embodiment of the invention provide an effective method for detecting the damage of the optical detector, so that a user can determine the damage of the optical detector in advance and perform corresponding treatment, the generation of artifacts during imaging of the optical detector is avoided, the imaging quality of medical equipment is improved, and higher imaging requirements are met.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flowchart of a method for detecting a photodetector in a medical device according to an embodiment of the present invention;
FIG. 2 is a flow chart of another method for detecting a light detector in a medical device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a sampling of photoresponse data provided by an embodiment of the invention;
FIG. 4 is a flowchart of a method for detecting a light detector in a medical device according to an embodiment of the present invention;
FIG. 5 is a flowchart of a method for detecting a light detector in a medical device according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating a comparison of the photo response data of a photo detection chip after cleaning and a photo detection chip before cleaning according to an embodiment of the present invention;
FIG. 7 is a flowchart of another method for detecting a light detector in a medical device according to an embodiment of the present invention;
FIG. 8 is a flow chart of another method for detecting a light detector in a medical device according to an embodiment of the present invention;
FIG. 9 is a block diagram of a detecting device of a photodetector in a medical apparatus according to an embodiment of the present invention;
fig. 10 is a block diagram of an entity detecting apparatus of a photodetector in a medical device according to an embodiment of the present invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The embodiment of the invention provides a method for detecting a photodetector in medical equipment, which is suitable for the detection process of the medical equipment based on photodetector imaging. As shown in fig. 1, the method includes:
s101, collecting the photosensitive response data of each optical detection chip within a specified time before and after the light source stops irradiating.
The optical detector can be an X-ray detector which is a component in medical equipment such as a CT machine, an X-ray machine and the like. Of course, the embodiment of the present invention is not limited to this, for example, the light detector may also be a gamma ray detector.
The light detector in the medical device generally includes a plurality of light detection modules, each of which includes a plurality of light detection chips. If any one or more of the photo-detection chips are damaged, artifacts may occur during imaging of the photo-detector, and the image quality is not good.
Specifically, the photo detection chip may be an ASIC (Application Specific Integrated Circuit) Integrated by a PD (photo diode) and a CMOS (Complementary Metal Oxide Semiconductor), or may be a Circuit formed by a PD and a CMOS through wiring. Wherein, the PD is used for converting visible light signals into electric signals; the CMOS is used for converting the electric signal into an analog signal; the ASIC is used to convert the analog signal to a digital signal.
Specifically, the light source may be a plurality of light sources with different single wavelengths, or may be a light source with a tunable wavelength. Whatever the light source, the wavelength band of the light source should cover the response wavelength band of the light detection chip. The response waveband of the light detection chip refers to a light waveband which can enable the light detection chip to generate photosensitive response. Generally, when the photosensitive materials of the photo-detection chips are different, the response wavelength bands of the photo-detection chips are also different.
In one possible implementation, the photoresponse data may be relative intensity data of the photoresponse current.
It should be noted that, in order to ensure the accuracy of data, in the process of irradiating each optical detection chip by the light source and collecting the photosensitive response data of the optical detection chip within a specified time before and after the light source is turned off, the data collection can be performed in a light-tight dark box, so as to ensure that other light waves do not enter the dark box to affect the data collection.
And S102, judging whether the attenuation index parameters of the optical detection chips meet preset requirements or not according to the photosensitive response data.
Specifically, the attenuation index parameter may be an attenuation duration of the optical detection chip. It should be noted that there may be various attenuation index parameters, as long as a corresponding attenuation index parameter meeting the requirements of the imaging system can be found, which is not limited to attenuation duration, but may also be signal attenuation intensity, etc.
Wherein the preset requirement can be set according to the imaging quality requirement of the imaging system.
In general, the longer the attenuation time of the optical detection chip is, the stronger the attenuation effect is, and the harder the preset requirement is met. The specific reasons are: when the attenuation effect of the optical detection chip is stronger, light waves with longer wavelength can penetrate through the PD and enter the CMOS, carriers with longer service life and larger diffusion length are generated in the CMOS, the carriers generate attenuation signals within a period of time after the light source is turned off, and the attenuation signals form artifacts when the optical detector images, so that the imaging quality of the medical equipment is poorer.
The attenuation effect refers to that after the light detection chip stops irradiating in the working state and the light source stops irradiating, the light detection chip still outputs a signal far larger than noise signals such as dark current for a certain period of time (as long as several ms (millisecond), even more than several hundred ms). The attenuated signal is attenuated by a substantially negative exponent (not strictly negative exponent, depending on the particular light detecting chip design).
S103, when the attenuation index parameter of any one optical detection chip is judged not to meet the preset requirement, the optical detection chip is determined to be damaged.
When the attenuation index parameter of the optical detection chip does not meet the preset requirement, the optical detection chip is considered to generate certain damage in the plasma or ultrasonic cleaning process or other process processes, so that the serious attenuation effect is brought.
It should be noted that the detection method provided by the embodiment of the present invention may be performed after the rear-end circuit of the optical detection chip is processed; or after a plurality of processed optical detection chips are assembled into an optical detection module; or after the light detection module is assembled into the light detector, or after the entire medical device is assembled.
The embodiment of the invention provides a method for detecting a photodetector in medical equipment, which comprises the steps of irradiating each photodetector chip by using a light source in a photodetector chip response waveband, collecting photosensitive response data of the photodetector chips within a specified time before and after the light source stops irradiating, judging whether attenuation index parameters of each photodetector chip meet preset requirements or not based on the photosensitive response data, and if the attenuation index parameters of any photodetector chip do not meet the preset requirements, enabling attenuation signals generated by attenuation effects to possibly form artifacts when the photodetector images, so that the imaging quality is reduced, and determining whether the photodetector chips are damaged or not based on the attenuation effects of the photodetector chips. The method and the device for detecting the optical detector provided by the embodiment of the invention provide an effective method for detecting the damage of the optical detector, so that a user can determine the damage of the optical detector in advance and perform corresponding treatment, the generation of artifacts during imaging of the optical detector is avoided, the imaging quality of medical equipment is improved, and higher imaging requirements are met.
Further, in combination with the foregoing method flows, when the imaging systems are different, different methods may be used to determine whether the attenuation index parameter of the photodetection chip meets the preset requirement, so that another possible implementation manner of the embodiment of the present invention provides the following three possible implementation methods for implementing step S102 when the attenuation index parameter is attenuation duration.
In a first implementation method, as shown in fig. 2, step S102 includes:
and S1021A, after the light source stops irradiating, determining the recovery time of each light detection chip, wherein the recovery time is the corresponding time when the relative intensity of the photosensitive response current of each light detection chip is the intensity threshold value.
After the light source stops irradiating, when the relative intensity of the photosensitive response current of the light detection chip recovers to the preset intensity threshold, the light detection chip is considered to recover to the non-attenuation state, specifically, the non-attenuation state may be a state in which the light detection chip only has its own dark current, or a state in which there is still a slight photosensitive response current except its own dark current.
S1022A, carrying out integration processing on the relative intensity data of the photosensitive response current between the illumination stopping time of the light source and the recovering time to obtain an integration result, and determining that the attenuation time of the light detection chip does not meet the preset standard when the integration result is greater than or equal to the preset value.
Specifically, if the integral result of the relative intensity data of the photosensitive response current is larger, that is, greater than or equal to the preset value, the attenuation of the optical detection chip under the condition is considered to be serious, the attenuation duration of the optical detection chip is longer, the preset requirement is not met, and the optical detection chip is damaged, otherwise, the preset requirement is met, and the damage is avoided.
Based on the foregoing implementation method, the embodiment of the present invention provides the following specific examples:
as shown in fig. 3, a sampling diagram of a specific example is shown, in which the abscissa is a sampling point; the ordinate is the relative intensity of the normalized photoreceptive response current.
The execution steps based on the specific example are as follows:
Step 2, background noise correction: the relative intensity after s2 is used as the noise floor, and the noise floor is subtracted from the response intensity of all the sampling points.
It should be noted that, under the condition that the light source is turned off, the response signal of the light detection chip inside the dark box is its own noise floor signal, which is termed as offset.
Step 3, sampling data normalization: the average level of the photosensitive response of the light detection chip under the condition that the light source is turned on is used as a reference point.
And 4, integrating relative response intensity: the relative response intensities over the intervals s1 and s2 are integrated and denoted as D.
Step 5, comparing the characteristic indexes with the characteristic preset values: and defining a corresponding index preset value T according to the imaging quality requirement of an actual imaging system, and comparing the D serving as a characteristic index with the index preset value T.
If the D value exceeds the T value, the attenuation degree of the corresponding optical detection chip is considered to be too large, namely the attenuation duration of the optical detection chip does not meet the preset requirement, and the optical detection chip is damaged.
In a second implementation method, as shown in fig. 4, step 102 includes:
and S1021B, after the light source stops irradiating, determining the recovery time of each light detection chip, wherein the recovery time is the corresponding time when the relative intensity of the photosensitive response current of each light detection chip is the intensity threshold value.
For the explanation of step S1021B, see step S1021A for details, and will not be described again.
And S1022B, when the recovery time is later than or equal to a preset time, determining that the attenuation time of the optical detection chip does not meet the preset requirement.
If the recovery time is too late and is later than or equal to the preset time, the attenuation time of the optical detection chip can be determined to be too long more intuitively, and the preset requirement cannot be met.
In a third implementation method, as shown in fig. 5, step 102 includes:
and S1021C, determining the relative intensity data of the light sensing response current of each light detection chip at the appointed time after the light source stops irradiating, and recording the relative intensity data as the reference intensity.
And S1022C, when the reference intensity is greater than or equal to the preset intensity, determining that the attenuation time of the optical detection chip does not meet the preset requirement.
Specifically, the specified time may be taken as a standard time, and if the relative intensity (i.e. the reference intensity) of the photosensitive response current of the optical detection chip at the standard time is already 0 or very small (specifically, the reference intensity may be compared with a preset intensity, and the reference intensity is smaller than the preset intensity), the optical detection chip is considered to have no attenuation at this time. Namely, the attenuation time of the optical detection chip is short, the preset requirement is met, the optical detection chip is not damaged, otherwise, the preset requirement is not met, and damage is generated.
As shown in fig. 6, which is a schematic diagram illustrating comparison of measured photoresponse data of a damaged (cleaned) photodetection chip and a non-damaged (cleaned) photodetection chip according to an embodiment of the present invention, wherein a vertical axis is a relative intensity of the normalized photoresponse current and is a logarithmic coordinate; the horizontal axis is the sample point. As can be seen from fig. 6, the optical detection chip before cleaning has almost no significant attenuation at the 25 th sampling point, and the significant attenuation of the optical detection chip after cleaning continues to the 38 th sampling point, so that it is known that the attenuation time of the optical detection chip damaged by cleaning is significantly longer.
Further, in combination with the foregoing method flow, after detecting a damaged optical detection chip, a user may need to process the optical detection chip to reduce or avoid artifacts caused by imaging of the optical detector. Therefore, another possible implementation manner of the embodiment of the present invention provides two possible implementation manners of responding to the processing by the light detector, for different processing manners of the light detection chip by the user.
The first way, executed after step S103, as shown in fig. 7, includes:
S104A, in response to the position adjustment of the light detection module where the light detection chip is located by the user, updating data of the light detector after the position adjustment.
Specifically, a user may adjust the light detection module where the light detection chip is located to an edge position of the light detector in the X direction. The shape of the optical detector in the CT machine, the X-ray machine, etc. is an arc, and the chord direction of the arc is generally defined as the X direction in the art, so the edge positions in the X direction refer to two ends of the arc.
Experiments show that the influence of the optical detection chip on the imaging quality is larger at a position closer to the center (X direction) of the optical detector, so that the damaged optical detection chip can be adjusted to the edge position (X direction) of the optical detector to reduce or even eliminate the influence of the optical detection chip on the imaging quality. And in consideration of the realizability of adjustment, the whole light detection module where the light detection chip is located is generally adjusted to the edge position of the light detector. The method reduces or even eliminates the influence of the damaged optical detection chip on the imaging quality without abandoning the damaged optical detection chip, thereby avoiding the resource waste.
The second way, executed after step S103, as shown in fig. 8, includes:
S104B, in response to the user replacing the light detection module with the light detection chip, data of the replaced light detector is updated.
By the mode, a user can directly replace the optical detection module with the damaged optical detection chip into a new nondestructive optical detection module, the influence of the optical detection module on the imaging quality is directly and simply eliminated, and time and labor are saved.
In the two implementation manners, the user adjusts or replaces the position of the damaged optical detection chip to avoid the damaged optical detection chip existing in the middle position of the optical detector in the X direction from seriously affecting the imaging quality. After the user adjusts or replaces the position of the damaged optical detection chip, the data of the optical detector is correspondingly updated, mainly the attribute parameters of the adjusted optical detection module, the corresponding relationship between the adjusted optical detection module and the corresponding position back-end circuit, and the like. Of course, it may be that the light detector does not need to update data, and therefore, the data of the light detector may not be updated, which is not limited in the embodiment of the present invention.
It should be noted here that when the attenuation duration is used as a characteristic index of the light detection chip, the light detection chip that does not meet the preset requirement cannot be directly applied to the imaging system. However, according to practical tests, it is found that the attenuation time can be reduced to some extent by the cumulative irradiation of X-rays, so that the attenuation time meets the preset requirements, but the treatment itself may have some influence on the long-term reliability of the photodetection chip (no quantitative evaluation exists at present).
The present invention provides a detection apparatus for an optical detector in a medical device, which is suitable for the above method process, wherein the optical detector includes at least one optical detection module, each optical detection module includes at least one optical detection chip, as shown in fig. 9, the apparatus includes:
the acquisition unit 21 is used for acquiring the light sensing response data of each light detection chip within a specified time length before and after the light source stops irradiating;
and the judging unit 22 is configured to judge whether the attenuation index parameter of each optical detection chip meets a preset requirement according to the photosensitive response data.
And the determining unit 23 is configured to determine that the optical detection chip is damaged when the attenuation index parameter of any one optical detection chip is determined to not meet the preset requirement.
The embodiment of the present invention provides a detection apparatus for a photodetector in a medical device, as shown in fig. 10, the apparatus includes an acquisition instrument 31, a processor 32 and a memory 33; the acquisition unit 31 is configured to acquire data, and the memory 33 is configured to store instructions, which when executed by the processor 32, cause the processor 32 to implement the method according to any of the above embodiments and any possible implementation manners.
The embodiment of the invention provides a detection device for an optical detector in medical equipment, which irradiates each optical detection chip by using a light source in a response waveband of the optical detection chip, collects light-sensitive response data of the optical detection chip in a specified time before and after the light source stops irradiating, judges whether attenuation index parameters of each optical detection chip meet preset requirements or not based on the light-sensitive response data, and if the attenuation index parameters of any optical detection chip do not meet the preset requirements, attenuation signals generated by attenuation effect may form artifacts when the optical detector images, so that the imaging quality is reduced, and whether the optical detection chip is damaged or not can be determined based on the attenuation effect of the optical detection chip. The method and the device for detecting the optical detector provided by the embodiment of the invention provide an effective method for detecting the damage of the optical detector, so that a user can determine the damage of the optical detector in advance and perform corresponding treatment, the generation of artifacts during imaging of the optical detector is avoided, the imaging quality of medical equipment is improved, and higher imaging requirements are met.
The embodiment of the invention provides an optical detector in medical equipment, wherein the optical detector detects through any one of the embodiments and any possible implementation mode, and an optical detection chip which generates damage in the optical detector is located at the edge position in the X direction.
An embodiment of the present invention provides a computer-readable storage medium, which includes computer-readable instructions, and when the computer reads and executes the computer-readable instructions, the computer is caused to execute the method according to any one of the above embodiments and any possible implementation manner.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions in actual implementation, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a Processor (Processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A method for detecting a light detector in a medical device, the light detector comprising at least one light detection module, each of the light detection modules comprising at least one light detection chip, the method comprising:
collecting the light sensing response data of each light detection chip within a specified time before and after the light source stops irradiating;
judging whether attenuation index parameters of each optical detection chip meet preset requirements or not according to the photosensitive response data, wherein the attenuation index parameters comprise attenuation duration;
when the attenuation index parameter of any one optical detection chip is judged to not meet the preset requirement, determining that the optical detection chip is damaged;
the judging whether the attenuation index parameter of each optical detection chip meets the preset requirement or not according to the photosensitive response data comprises the following steps:
after the light source stops irradiating, determining the recovery time of each light detection chip, wherein the recovery time is the corresponding time of each light detection chip when the relative intensity of the photosensitive response current is the intensity threshold; integrating the relative intensity data of the photosensitive response current between the illumination stopping time and the recovery time of the light source to obtain an integration result, and determining that the attenuation time of the light detection chip does not meet the preset requirement when the integration result is greater than or equal to a preset value; alternatively, the first and second electrodes may be,
after the light source stops irradiating, determining the recovery time of each light detection chip, wherein the recovery time is the corresponding time of each light detection chip when the relative intensity of the photosensitive response current is the intensity threshold; and when the recovery time is later than or equal to a preset time, determining that the attenuation time of the optical detection chip does not meet the preset requirement.
2. The method of claim 1, wherein the photoresponsive data comprises relative intensity data of the photoresponsive current.
3. The method of claim 1, wherein after said determining that the photo-detecting chip is damaged, the method further comprises:
responding to the position adjustment of the optical detection module where the optical detection chip is located by a user, and updating data of the optical detector after the position adjustment; alternatively, the first and second electrodes may be,
and responding to the replacement of the optical detection module where the optical detection chip is located by a user, and updating data of the replaced optical detector.
4. The method of claim 1, wherein the light detector is an X-ray detector.
5. An apparatus for detecting a light detector in a medical device, the light detector comprising at least one light detection module, each of said light detection modules comprising at least one light detection chip, the apparatus comprising:
the acquisition unit is used for acquiring the light sensing response data of each light detection chip within a specified time before and after the light source stops irradiating;
the judging unit is used for judging whether attenuation index parameters of each optical detection chip meet preset requirements or not according to the photosensitive response data, wherein the attenuation index parameters comprise attenuation duration;
the determining unit is used for determining that the optical detection chip is damaged when the attenuation index parameter of any optical detection chip is judged to not meet the preset requirement;
the determining unit is specifically configured to determine a recovery time of each optical detection chip after the light source stops irradiating, where the recovery time is a time corresponding to each optical detection chip when the relative intensity of the photosensitive response current is an intensity threshold; integrating the relative intensity data of the photosensitive response current between the illumination stopping time and the recovery time of the light source to obtain an integration result, and determining that the attenuation time of the light detection chip does not meet the preset requirement when the integration result is greater than or equal to a preset value; alternatively, the first and second electrodes may be,
the determining unit is specifically configured to determine a recovery time of each optical detection chip after the light source stops irradiating, where the recovery time is a time corresponding to each optical detection chip when the relative intensity of the photosensitive response current is an intensity threshold; and when the recovery time is later than or equal to a preset time, determining that the attenuation time of the optical detection chip does not meet the preset requirement.
6. The detection device of the photodetector in the medical equipment is characterized by comprising an acquisition instrument, a processor and a memory; the acquisition instrument is configured to acquire data, and the memory is configured to store instructions that, when executed by the processor, cause the processor to implement the method of any one of claims 1 to 4.
7. A photodetector in a medical device, characterized in that the photodetector is detected by the method of any one of claims 1 to 4, and a light detecting chip generating a lesion in the photodetector is located at an edge position in the X direction.
8. A computer readable storage medium comprising computer readable instructions which, when read and executed by a computer, cause the computer to perform the method of any one of claims 1 to 4.
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| CN104411245A (en) * | 2012-06-29 | 2015-03-11 | 皇家飞利浦有限公司 | Dynamic modeling of imperfections for photon counting detectors |
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| JP2011252860A (en) * | 2010-06-03 | 2011-12-15 | Toshiba Corp | Radiation imaging apparatus, method and program |
| CN104569002B (en) * | 2013-10-23 | 2018-04-27 | 北京纳米维景科技有限公司 | X-ray phase contrast system, method and its equipment based on photon counting |
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| US5473663A (en) * | 1994-09-12 | 1995-12-05 | General Electric Company | Method for evaluating the performance of detectors in a computed tomography system |
| CN104411245A (en) * | 2012-06-29 | 2015-03-11 | 皇家飞利浦有限公司 | Dynamic modeling of imperfections for photon counting detectors |
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