CN115312181A - Brain network disease surgery prognosis judgment method, system and device - Google Patents
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Abstract
The embodiment of the specification provides a method, a system and a device for judging brain network disease surgical prognosis, wherein the method comprises the following steps: projecting PET metabolic data of a subject to the same structural space, wherein the subject comprises in particular: brain network disease patients and healthy people; in the same structure space, eliminating the morphological difference among the subjects, and carrying out the same-original structure registration among the subjects; specifically extracting PET (positron emission tomography) metabolic data of gray matter based on the registration coordinates between the subjects in the same structural space, and performing statistical analysis to obtain PET metabolic statistical data; and (3) keeping registration coordinates corresponding to PET metabolic statistical data of a preset percentage of the whole brain to form a plurality of clusters, and performing brain network disease surgical prognosis analysis according to the average size of the clusters and the number of the clusters.
Description
Technical Field
The present invention relates to the field of computer technologies, and in particular, to a method, a system, and a device for determining a prognosis of brain network disease after surgery.
Background
In the prior art, magnetic resonance negative epilepsy, namely epilepsy with definite brain structure change which cannot be found by magnetic resonance and conventional means, is divided into two major categories of focal epilepsy and generalized/multifocal epilepsy. Among them, focal epilepsy has an opportunity of operative cure, and the seizure-free rate of epilepsy after 10 years of operation is 59% in the latest literature. The overall/multifocal effect has no chance of developing radical focus elimination, and the prognosis is poor. If the possibility of radical operation of a patient is determined through quantitative analysis before an operation, a large number of patients can be prevented from misjudging the trauma of craniotomy, unnecessary examination and medical cost are reduced, and the prior resources are used for a more reasonable conservative treatment scheme.
At present, the method for realizing positioning based on the comparison between PET and a healthy person template in the prior art mainly relies on a Statistical Parametric Mapping (SPM) technical system, which is not accurate for analyzing the affected range of epilepsy, for the following reasons:
(1) the research shows that the epilepsy is mainly the pathological change of the cortical gray matter, and the technical system of the traditional SPM not only incorporates the cortical gray matter, but also incorporates the white matter when comparing healthy people, thereby reducing the statistical precision.
(2) When the SPM is used for comparing the testees, the different tested cerebral sulcus gyrus with different walking directions cannot be completely projected to a uniform space, so that the accuracy of comparison among the testees is reduced.
Currently, F-FDG-PET can realize the observation of the metabolic activity of the cerebral cortex through the uptake of a glucose analog labeled radionuclide. Clinically, early localization of epilepsy is currently discussed mainly by looking for areas of reduced glucose metabolism during the interval between seizures in the flesh eye. However, it has limitations in that: (1) physiological hypometabolism areas exist in the brain, i.e., hypometabolism areas that exist in healthy people; (2) in patients, hypo-metabolic regions may also be present in the brain regions to which epilepsy spreads; (3) hypermetabolism may also occur in epileptogenic foci, since this part of the brain region is in the healthy population, i.e. the metabolic level is higher, even if slightly reduced, than other brain regions in the brain. Therefore, the clinical reading of naked eyes cannot realize the accurate judgment of the single mode of the epileptogenic focus and the judgment of the operation prognosis.
In the image post-processing, based on the method of SPM, the first-line method is to transform the brain PET data of the patient and the healthy brain into a unified template for comparison through deformation in the original state of a 3D matrix.
As mentioned above, the latest one-line technology is mainly the post-processing technology under the SPM system. Because different individuals have different sulci gyrus depths and bending degrees, the method system only can unify the widths, lengths and the like of different brains, but still cannot ensure the regular alignment of the same gyrus of different individuals on spatial positions, so that clear registration errors generally exist, and the observation of tiny lesions is hindered.
Epilepsy is a gray-colored pathology. In the traditional method, adjacent cerebrospinal fluid and white matter structures are simultaneously brought into the traditional method during statistics, so that when data are compared and analyzed, the number of mixed factors brought into the data is increased, and the range of focus extraction is not good enough.
Disclosure of Invention
The invention aims to provide a method, a system and a device for judging the prognosis of brain network disease operation, and aims to solve the problems in the prior art.
The invention provides a brain network disease surgery prognosis judgment method, which comprises the following steps:
projecting PET metabolic data of a subject to the same structural space, wherein the subject comprises in particular: patients with brain network diseases and healthy people;
in the same structure space, eliminating the morphological difference among the subjects, and carrying out the same-original structure registration among the subjects;
specifically extracting PET (positron emission tomography) metabolic data of gray matter based on the registration coordinates between the subjects in the same structural space, and performing statistical analysis to obtain PET metabolic statistical data;
and (3) keeping registration coordinates corresponding to PET metabolic statistical data of a preset percentage of the whole brain to form a plurality of clusters, and performing brain network disease surgical prognosis analysis according to the average size of the clusters and the number of the clusters.
The invention provides a brain network disease surgery prognosis judgment system, which comprises:
a projection module for projecting the PET metabolic data of a subject to the same structural space, wherein the subject comprises in particular: brain network disease patients and healthy people;
the registration module is used for eliminating the morphological difference among the subjects in the same structural space and carrying out the same-structure registration among the subjects;
the extraction module is used for specifically extracting the PET metabolic data of the gray matter based on the registration coordinates between the subjects in the same structural space, and performing statistical analysis to obtain the PET metabolic statistical data;
and the analysis module is used for reserving registration coordinates corresponding to the PET metabolic statistical data of a preset percentage of the whole brain to form a plurality of clusters, and performing surgical prognosis analysis on the brain network diseases according to the average size of the clusters and the number of the clusters.
The embodiment of the invention also provides a device for judging the prognosis of brain network disease operation, which comprises: the brain network disease surgery prognosis judging method comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the computer program realizes the steps of the brain network disease surgery prognosis judging method when being executed by the processor.
The embodiment of the invention also provides a computer readable storage medium, wherein an implementation program for information transmission is stored on the computer readable storage medium, and when the program is executed by a processor, the steps of the brain network disease surgery prognosis judgment method are implemented.
By adopting the embodiment of the invention, the accurate alignment problem of homologous brain areas of different subjects is fully solved, so that the unified structures of patients and healthy people can be perfectly aligned and overlapped, and the uniformity of space during statistics is ensured; accurate projection of brain metabolic data unified space of a single patient and healthy people is achieved, projection difference among testees is fully eliminated, meanwhile, a gray matter range is defined based on 3-dimensional reconstruction segmentation, metabolic signals in the middle of the gray matter are accurately extracted, comparison among samples is conducted, positioning accuracy is improved, and further, the size and the number of the accumulated range are quantitatively analyzed, the surgery prognosis of MR negative epilepsy is accurately judged, and scientific basis is provided for operation or not.
Drawings
In order to solve two key problems of an SPM technical system in the prior art, brain metabolic data of a single patient and healthy people are accurately projected in a unified space, so that the projection difference among subjects is fully eliminated, meanwhile, an grey matter range is defined based on 3-dimensional reconstruction segmentation, a metabolic signal in the middle of the grey matter is accurately extracted, sample-to-sample comparison is carried out, and the accuracy of judging the epilepsy accumulation range is improved. And further, the operation prognosis of the MR negative epilepsy is accurately judged by quantitatively analyzing the size and the number of the accumulated range.
In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, the drawings used in the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments described in the present specification, and that other drawings may be obtained by those skilled in the art without inventive labor.
FIG. 1 is a flowchart of a method for determining a prognosis of brain network disease after surgery according to an embodiment of the present invention;
FIG. 2 is a graph showing PET values at 3D brain surface vertices according to an embodiment of the present invention;
FIG. 3a is a graph of the results of an analysis in a non-postoperative patient according to an embodiment of the present invention;
FIG. 3b is a graph of the results of an analysis in a patient with an episode after surgery according to an embodiment of the present invention;
FIG. 4a is a graph of the results of a traditional first line technique post-operative non-responder analysis in a patient according to an embodiment of the present invention;
FIG. 4b is a graph of the results of an analysis in a seizure patient after conventional first line techniques in accordance with an embodiment of the present invention;
FIG. 5 is a schematic diagram of a system for determining the prognosis of brain network disease after surgery, according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a brain network disease surgery prognosis determination device according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in one or more embodiments of the present disclosure, the technical solutions in one or more embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in one or more embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all embodiments. All other embodiments that can be derived by a person skilled in the art from one or more of the embodiments described herein without making any inventive step shall fall within the scope of protection of this document.
Method embodiment
According to an embodiment of the present invention, there is provided a method for determining surgical prognosis of brain network disease, fig. 1 is a flowchart of the method for determining surgical prognosis of brain network disease according to the embodiment of the present invention, as shown in fig. 1, the method for determining surgical prognosis of brain network disease according to the embodiment of the present invention specifically includes:
step 101, projecting PET metabolic data of a subject to the same structural space, wherein the subject specifically comprises: brain network disease patients and healthy people; step 101 specifically includes:
acquiring PET metabolic data of a subject and 3D MR T1 weighted data, namely structural space data, of a brain network disease patient, registering the PET metabolic data into a T1D space, and performing brain structure reconstruction and grey-white segmentation of the T1D space through a T1 3D reconstruction algorithm of FreeSharfer technical standard based on the 3D MR T1 weighted data, wherein the same structural space comprises the T1D space and the T1 3D space.
102, eliminating morphological differences among the subjects in the same structural space, and carrying out original structure registration among the subjects; step 102 specifically includes:
based on the brain structure information in the T1D space and the T1D space, the morphological difference of the brain structure between the testees is eliminated through a synchronous volume and surface CVSR algorithm, and the homostructure registration of the brain structure between the testees is carried out.
103, specifically extracting PET (positron emission tomography) metabolic data of gray matter based on the registration coordinates between the subjects in the same structural space, and performing statistical analysis to obtain PET metabolic statistical data; step 103 specifically comprises:
and interpolating the PET metabolic data into the registration coordinates of the corresponding brain structures based on the registration coordinates among the subjects of the brain structures in the same space, and performing peak-to-peak statistics on the PET metabolic data values of the same space structure at the level of the peak of the 3D model surface by adopting a preset statistical method to obtain PET metabolic statistical data. Wherein the predetermined statistical method specifically comprises one of: z-transformation and t inspection;
and step 104, reserving registration coordinates corresponding to PET metabolic statistical data of a preset percentage of the whole brain to form a plurality of clusters, and performing brain network disease surgical prognosis analysis according to the average size of the clusters and the number of the clusters. The predetermined percentage is one-half percent.
Step 104 specifically includes: and if the average size of the clusters is greater than or equal to the threshold value of the number of the preset coordinate points and the number of the clusters is greater than or equal to the threshold value of the number of the preset clusters, determining that the brain network disease has poor surgical prognosis and no surgical indication.
In the embodiment of the invention, the accurate alignment problem of homologous brain areas of different subjects is fully solved, so that the unified structures of patients and healthy people can be perfectly aligned and overlapped, and the uniformity of space during statistics is ensured; meanwhile, only signals of the gray matter structure are extracted for statistics, and the method is more suitable for the attribute that the epilepsy is gray matter disease. The method provided by the research further obtains the accumulated range and the number of the epileptic diseases, and further judges the operation prognosis.
The following describes the above technical solution of the embodiment of the present invention in detail by taking magnetic resonance negative epilepsy as an example with reference to the accompanying drawings.
According to the embodiment of the invention, PET metabolic data of a patient and PET metabolic data of healthy people are projected to the same space, on the premise of fully eliminating morphological differences among subjects, gray matter signals are specifically extracted, statistical comparison is carried out on epilepsy which is a gray matter disease, and a region deviating from normal is found, namely an epileptogenic focus. And the operation prognosis of the MR negative epilepsy is accurately judged by quantitatively analyzing the size and the number of the accumulated range. The method comprises the following specific steps:
step 1, pretreatment.
1. Space division:
the embodiment of the invention requires that the patient has 3D MR T1 weighted data at the same time, which can be acquired by synchronous PET/MR data acquisition, and can also be acquired by PET/CT and common magnetic resonance acquisition respectively; registering the PET into T1D space;
based on the 3D MR T1 data, brain structure reconstruction and grey-white substance segmentation are carried out through a T1D reconstruction algorithm of FreeScherfer technical standard.
2. Inter-subject registration, unifying structural space of patients and healthy people
Inter-subject Registration is further performed by the Combined Volumetric and Surface Registration algorithm. The algorithm simultaneously refers to grey white matter information in a 2D space and structure information reconstructed in a 3D space, so that the matching degree of the same structure alignment among the testees can reach more than 95 percent;
3. extracting the PET metabolic information of the grey matter median.
Fig. 2 is a diagram illustrating the PET values at the vertices of the 3D brain surface according to an embodiment of the present invention, and as shown in fig. 2, the PET signals are interpolated into corresponding structural coordinates based on the inter-subject registration coordinates of the structure, and vertex-to-vertex statistics are performed on the PET signal values of the same spatial structure at the level of the vertices of the 3D model plane (corresponding to the pixels of the 2D plane). The statistical methods include, but are not limited to: z-transform (standard deviation of statistical patients from normal human-averaged mean), t-test of single patients on healthy population, etc.;
and 2, carrying out prognosis prediction analysis.
In the present example, the coordinates corresponding to the 0.5% metabolic value of the whole brain were retained to form clusters, and the prognosis of epilepsy was analyzed based on the average size of clusters and the number of clusters. The average Cluster is more than 1000 coordinate points (voxels and fixed points), and the Cluster number is more than 5, thus prompting that the prognosis is poor and no surgical indication is available. As shown in fig. 3a, fig. 3b, fig. 4a and fig. 4b, the analysis result of the conventional first-line method in the post-operation patients with seizures is not significantly different from the analysis result of the non-operation patients, while the analysis result of the embodiment of the present invention in the post-operation patients with seizures is significantly different from the analysis result of the non-operation patients.
In addition, based on the embodiment of the present invention, a normative can be added according to different PET molecular probes for determining the prognosis of surgery for other brain network diseases such as parkinson, depression, schizophrenia, autism, and anxiety.
In conclusion, the embodiment of the invention realizes the position matching between the brain of the patient and the brain homomorphic structure of the healthy person by eliminating the brain morphological difference among the subjects, thereby providing a basis for further quantitative statistics; providing a metabolic value in accurate grey matter extraction to count the degree of deviation of a patient from a normal population; by the quantification method, the size and the number of the lesions are observed, and the judgment of the surgery prognosis is realized.
In the embodiment of the invention, based on grouped 42 magnetic resonance negative epilepsy originated from the cortex of the functional silent zone (the case with the highest positioning difficulty all over the world), the SPM method system (first-line method) in the prior art is adopted, so that the epilepsy positioning rate can only be 47%, and the positioning rate can reach 87% by the technical scheme of the embodiment of the invention, so that the problem of the magnetic resonance negative epilepsy operation evaluation can be fully solved.
In conclusion, by means of the technical scheme of the embodiment of the invention, the problem of accurate alignment of homologous brain regions of different subjects is fully solved, so that unified structures of patients and healthy people can be perfectly aligned and overlapped, and the uniformity of space during statistics is ensured; meanwhile, only signals of the grey matter structure are extracted for statistics, and the attributes that epilepsy is a grey matter disease are better met. By adopting the technical scheme of the embodiment of the invention, even if the epilepsy is in a magnetic resonance negative area, a PET non-specific area and a functional silent area, the positioning accuracy rate reaches 87%. The positioning accuracy is obviously improved. And further acquiring the accumulated range and number of the epileptic diseases, and further judging the operation prognosis.
System embodiment
According to an embodiment of the present invention, there is provided a brain network disease surgery prognosis determination system, fig. 5 is a schematic diagram of the brain network disease surgery prognosis determination system according to the embodiment of the present invention, as shown in fig. 5, the brain network disease surgery prognosis determination system according to the embodiment of the present invention specifically includes:
a projection module 50 for projecting PET metabolic data of a subject to the same structural space, wherein the subject comprises in particular: brain network disease patients and healthy people; the projection module 50 is specifically configured to:
acquiring PET metabolic data of a subject and 3D MR T1 weighted data, namely structural space data, of a brain network disease patient, registering the PET metabolic data into a T1D space, and performing brain structural reconstruction and grey-white substance segmentation of the T1D space through a T1D reconstruction algorithm of FreeSurfer technical standard based on the 3D MR T1 weighted data, wherein the same structural space comprises the T1D space and the T1 3D space.
A registration module 52, configured to eliminate morphological differences between subjects in the same structural space, and perform orthotopic structural registration between the subjects; the registration module 52 is specifically configured to:
based on the brain structure information in the T1D space and the T1D space, the morphological difference of the brain structures among the testees is eliminated through a synchronous volume and surface CVSR algorithm, and the homomorphic structure registration of the brain structures among the testees is carried out.
An extracting module 54, configured to specifically extract gray PET metabolic data based on the registration coordinates between the subjects in the same structural space, and perform statistical analysis to obtain PET metabolic statistical data; the extraction module 54 is specifically configured to:
and interpolating the PET metabolic data into the registration coordinates of the corresponding brain structures based on the registration coordinates among the subjects of the brain structures in the same space, and performing peak-to-peak statistics on the PET metabolic data values of the same space structure at the level of the peak of the 3D model surface by adopting a preset statistical method to obtain PET metabolic statistical data. The predetermined statistical method specifically comprises one of: z-transformation and t-test.
And the analysis module 56 is used for reserving the registration coordinates corresponding to the PET metabolic statistical data of the predetermined percentage of the whole brain to form a plurality of clusters, and performing the brain network disease surgery prognosis analysis according to the average size of the clusters and the number of the clusters. Wherein the predetermined percentage is one-half percent. The analysis module 56 is specifically configured to: and if the average size of the clusters is larger than or equal to the threshold value of the number of the preset coordinate points and the number of the clusters is larger than or equal to the threshold value of the number of the preset clusters, determining that the brain network disease has poor surgical prognosis and no surgical indication.
The embodiment of the present invention is a system embodiment corresponding to the above method embodiment, and specific operations of each module may be understood with reference to the description of the method embodiment, which is not described herein again.
Apparatus embodiment one
An embodiment of the present invention provides a device for determining surgical prognosis of brain network diseases, as shown in fig. 6, including: a memory 60, a processor 62 and a computer program stored on the memory 60 and executable on the processor 62, which computer program, when executed by the processor 62, performs the steps as described in the method embodiments.
Example II of the device
An embodiment of the present invention provides a computer-readable storage medium, on which a program for implementing information transmission is stored, and when the program is executed by a processor 62, the program implements the steps described in the method embodiment.
The computer-readable storage medium of this embodiment includes, but is not limited to: ROM, RAM, magnetic or optical disks, and the like.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for judging the prognosis of brain network disease operation is characterized by comprising the following steps:
projecting PET metabolic data of a subject to the same structural space, wherein the subject comprises in particular: brain network disease patients and healthy people;
in the same structure space, eliminating the morphological difference among the subjects, and carrying out the same structure registration among the subjects;
based on the registration coordinates among the subjects in the same structural space, specifically extracting PET (positron emission tomography) metabolic data of gray matter, and performing statistical analysis to obtain PET metabolic statistical data;
and (3) reserving registration coordinates corresponding to PET metabolic statistical data of a preset percentage of the whole brain to form a plurality of clusters, and performing brain network disease surgical prognosis analysis according to the average size of the clusters and the number of the clusters.
2. The method of claim 1, wherein projecting the PET metabolic data of the subject to the same structural space specifically comprises:
acquiring PET metabolic data of a subject and 3D MR T1 weighted data, namely structural space data, of a brain network disease patient, registering the PET metabolic data into a T1D space, and performing brain structural reconstruction and grey-white substance segmentation of the T1D space through a T1D reconstruction algorithm of FreeSurfer technical standard based on the 3D MR T1 weighted data, wherein the same structural space comprises the T1D space and the T1 3D space.
3. The method according to claim 2, wherein inter-subject morphological differences are eliminated in the same structural space, and performing inter-subject orthotopic structural registration specifically comprises:
based on the brain structure information in the T1D space and the T1D space, the morphological difference of the brain structure between the testees is eliminated through a synchronous volume and surface CVSR algorithm, and the homostructure registration of the brain structure between the testees is carried out.
4. The method according to claim 1, wherein PET metabolic data of gray matter are specifically extracted and statistically analyzed based on the inter-subject registration coordinates of the same structural space, and the obtaining of PET metabolic statistical data specifically comprises:
and interpolating the PET metabolic data into the registration coordinates of the corresponding brain structures based on the registration coordinates among the subjects of the brain structures in the same space, and performing peak-to-peak statistics on the PET metabolic data values of the same space structure at the level of the peak of the 3D model surface by adopting a preset statistical method to obtain PET metabolic statistical data.
5. The method according to claim 4, wherein the predetermined statistical method comprises in particular one of: z-transformation and t-test.
6. The method of claim 1, wherein the predetermined percentage is one-half percent.
7. The method of claim 1, wherein performing a surgical prognostic analysis of brain network disease based on the average size of clusters and the number of clusters specifically comprises:
and if the average size of the clusters is larger than or equal to the threshold value of the number of the preset coordinate points and the number of the clusters is larger than or equal to the threshold value of the number of the preset clusters, determining that the brain network disease has poor surgical prognosis and no surgical indication.
8. A brain network disease surgery prognosis determination system, comprising:
a projection module for projecting the PET metabolic data of a subject to the same structural space, wherein the subject comprises in particular: patients with brain network diseases and healthy people;
the registration module is used for eliminating the morphological difference among the subjects in the same structural space and carrying out the same-original structural registration among the subjects;
the extraction module is used for specifically extracting the PET metabolic data of the gray matter based on the registration coordinates between the subjects in the same structural space, and performing statistical analysis to obtain the PET metabolic statistical data;
and the analysis module is used for reserving the registration coordinates corresponding to the PET metabolic statistical data of the whole brain in a preset percentage to form a plurality of clusters, and performing surgical prognosis analysis on the brain network diseases according to the average size of the clusters and the number of the clusters.
9. A brain network disease surgery prognosis determination device, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the brain network disease surgical prognosis method according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores thereon an information transfer implementation program, which when executed by a processor implements the steps of the brain network disease surgery prognosis method according to any one of claims 1 to 7.
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