WO2023098524A1 - 多模态医学数据融合的评估方法、装置、设备及存储介质 - Google Patents
多模态医学数据融合的评估方法、装置、设备及存储介质 Download PDFInfo
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Definitions
- the present application relates to the field of medical technology, for example, to an evaluation method, device, equipment and storage medium for multimodal medical data fusion.
- Rectal cancer is one of the main cancers that threaten the life and health of Chinese residents, and has caused a serious social burden.
- the main treatment methods for rectal cancer include comprehensive treatment methods such as surgery, radiotherapy, chemotherapy, and targeted therapy.
- comprehensive treatment methods such as surgery, radiotherapy, chemotherapy, and targeted therapy.
- the damage caused by tumor or surgery in patients with low rectal cancer may lead to impaired anal function, anal loss, and colostomy, which seriously affect the survival and treatment of patients.
- Many patients with locally advanced rectal cancer are not suitable for surgical treatment because one-stage surgery cannot achieve the goal of radical cure.
- the standard treatment for locally advanced rectal cancer ( ⁇ cT 3 or N+) is neoadjuvant chemoradiotherapy combined with total mesorectal resection and adjuvant chemotherapy.
- Neoadjuvant therapy can effectively achieve tumor downstaging, improve the rate of resection and sphincter preservation. Neoadjuvant therapy also provides better options for preserving organ function in patients with low rectal cancer.
- neoadjuvant therapy for rectal cancer
- most clinical guidelines and expert consensus suggest that multimodal data such as endoscopy, digital rectal examination, rectal MRI, serum tumor marker levels, and enhanced CT of the chest, abdomen, and pelvis should be used to comprehensively judge whether a patient has reached the clinical stage. remission or near clinical remission.
- the evaluation of the effect of neoadjuvant therapy for rectal cancer relies on a multidisciplinary tumor diagnosis and treatment team with experienced experts from departments such as surgery, internal medicine, radiotherapy, imaging, digestive endoscopy, and pathology. Due to the lack of experts in certain professional directions, many medical institutions cannot carry out neoadjuvant treatment of rectal cancer well.
- Embodiments of the present disclosure provide an evaluation method, device, equipment, and storage medium for multi-modal medical data fusion to solve the problem that it is difficult for clinicians to accurately evaluate the patient's condition in a manual way in related technologies, resulting in relatively low medical risk for patients. high technical problems.
- an embodiment of the present disclosure provides an evaluation method for multimodal medical data fusion, including:
- Feature extraction is performed on the medical data to be evaluated for each modality to obtain multiple feature vectors
- the fusion feature vector is input into a pre-trained multimodal fusion evaluation model, so as to obtain the evaluation results of the multi-modal medical data to be evaluated outputted by the pre-trained multi-modal fusion evaluation model.
- the fusion feature vector is input into a pre-trained multi-modal fusion evaluation model, so as to obtain the to-be-evaluated values of the various modes output by the pre-trained multi-modal fusion evaluation model Results of evaluation of medical data, including:
- Each eigenvector in the fusion eigenvector is horizontally spliced to obtain the first matrix W(In) of the eigenvector, and the first function is used to encode the position of the first matrix W(In) of the eigenvector to obtain the second matrix of the eigenvector W(P), the formula used is as follows:
- t represents a sub-vector in the first matrix W(In) of the eigenvector
- p(t) represents the encoding result corresponding to the t value
- pos represents the number of eigenvectors that the vector t belongs to
- i represents the number of eigenvectors that the vector t belongs to
- d represents the matrix horizontal direction dimension quantity of the first matrix W (In) of the feature vector
- the second matrix W (P) of the eigenvector is input to the second function, and the high-dimensional feature representation matrix W (M) on the subspace is calculated, and the formula adopted is as follows:
- W(M) Concat(F(1), F(2), . . . , F(i)) W 0 ;
- the CONCAT function represents the second function
- F(1), F(2)...F(i) represents the formula F calculation for the i-th eigensubvector in the second matrix W(P) of the eigenvector
- W o represents the transposition of the first matrix W(In) of the eigenvector
- the x in F(i) represents the i-th eigensubvector in the second matrix W(P) of the input eigenvector;
- Q, K, and V represent the linear perception of the parameter n of the hidden layer of the multimodal fusion evaluation model layer;
- Q(x) means linear regression on x;
- the feature vector of each image is encoded by the encoder of the multi-modal fusion evaluation model, the output W (Out) of the encoder is input to the linear regression layer, and W (Out) is converted to a low-level linear regression layer through the linear regression layer. Dimensional feature representation matrix, and finally output the evaluation result through the operation of the softmax function.
- obtaining the medical data to be evaluated in multiple modalities of the target object includes at least three of the following methods:
- the rectal cancer image data set at least includes a macroscopic perspective image, a close perspective image and a microscopic perspective image determined according to the tumor area or the retreated tumor area;
- the rectal cancer magnetic resonance imaging data set of the target object Acquiring the rectal cancer magnetic resonance imaging data set of the target object as the second modality data, wherein the rectal cancer magnetic resonance imaging data set includes initial rectal cancer magnetic resonance imaging data and target rectal cancer magnetic resonance imaging data;
- the initial rectal cancer magnetic resonance imaging data and the target rectal cancer magnetic resonance imaging data are marked with the tumor region or the retracted tumor region, and several slice images containing the tumor region or the retracted tumor region are obtained;
- the initial clinical data set and the target clinical data set of the target object Acquiring the initial clinical data set and the target clinical data set of the target object as the third modality data, wherein the initial clinical data set and the target clinical data set include at least the personal information and case information of the target object;
- the initial tumor marker information, target tumor marker information, initial blood information, and target blood information of the target subject are acquired as fourth modality data.
- feature extraction is performed on the medical data to be evaluated for each modality to obtain multiple feature vectors, including:
- the high-dimensional feature map extracted by the last three-dimensional convolution kernel is converted into a one-dimensional feature vector through ⁇ upsampling modules and a fully connected layer of the neural network model, and the first feature vector and the second feature vector are respectively obtained.
- feature extraction is performed on the medical data to be evaluated for each modality to obtain multiple feature vectors, including:
- the numerical features are mapped into a two-dimensional matrix to obtain a third feature vector and a fourth feature vector respectively.
- the training process of the neural network model includes:
- the initial neural network model is trained successfully, and the pre-trained neural network model is obtained;
- the initial feature vector does not meet the preset requirements, continue to train the initial neural network model by adjusting the loss parameters in the initial neural network model until the loss parameters fit and reach the preset loss parameters Threshold to obtain the pre-trained neural network model.
- a cross-entropy loss function is used to carry out parameter backpropagation and update until the cross-entropy loss function is fitted.
- an embodiment of the present disclosure provides an evaluation device for multimodal medical data fusion, including:
- the medical data acquisition module is configured to acquire the medical data to be evaluated in multiple modalities of the target object
- the feature vector extraction module is configured to perform feature extraction on the medical data to be evaluated for each modality to obtain multiple feature vectors
- a feature vector fusion module configured to fuse the multiple feature vectors to obtain a fusion feature vector
- the multi-modal fusion evaluation module is configured to input the fusion feature vector into the pre-trained multi-modal fusion evaluation model, so as to obtain the various modes output by the pre-trained multi-modal fusion evaluation model The evaluation results of the state medical data to be evaluated.
- an embodiment of the present disclosure provides an electronic device, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory complete mutual communication through the communication bus;
- the processor is used to implement the above method steps when executing the program stored in the memory.
- the embodiments of the present disclosure provide a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the above-mentioned method steps are implemented.
- An evaluation method, device, equipment, and storage medium for multimodal medical data fusion provided by embodiments of the present disclosure can achieve the following technical effects:
- the embodiments of the present disclosure perform feature extraction on multimodal medical data based on artificial intelligence, obtain multiple feature vectors, fuse the obtained multiple feature vectors to obtain a fusion feature vector, and use the trained multimodal fusion method based on the fusion feature vector
- the evaluation model predicts and evaluates the degree of remission of the target object, which can assist in the accurate evaluation of the degree of remission of the target object's disease at the pathological level after treatment, thereby improving the accuracy of judgment and reducing the medical risk of the target object.
- FIG. 1 is a schematic flowchart of an evaluation method for multimodal medical data fusion provided by an embodiment of the present disclosure
- FIG. 2 is a schematic diagram of feature extraction and data evaluation of multimodal medical data provided by an embodiment of the present disclosure
- Fig. 3 is a schematic structural diagram of an evaluation device for multimodal medical data fusion provided by an embodiment of the present disclosure
- Fig. 4 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure.
- An embodiment of the present disclosure provides an evaluation method for multimodal medical data fusion, as shown in FIG. 1 , including the following steps:
- S102 Perform feature extraction on the medical data to be evaluated for each modality to obtain multiple feature vectors.
- obtaining the medical data to be evaluated in multiple modalities of the target object includes at least three of the following methods:
- the rectal cancer image data set of the target object is acquired through an endoscope as the first modality data, wherein the rectal cancer image data set at least includes a macroscopic perspective image (usually one image) determined according to the tumor area or the retreated tumor area, near Perspective images (usually 1) and microscopic perspective images (usually 2); macroscopic perspective images refer to the images of the area within the first preset distance interval from the tumor area or from the shrinking tumor area and facing the center of the intestinal lumen Panoramic images, for example, a panoramic image taken at a distance of 0.8mm-20mm from the "tumor area” or "regressed tumor area” and facing the center of the intestinal lumen as a macro perspective image; a near perspective image refers to the tumor area or the retracted tumor area An image in which the longest border of the tumor area is smaller than the preset zoom ratio of the visual field border, for example, an image taken when the longest border of the "tumor area” or "regressed tumor area” is less than 10% of the visual field border
- the rectal cancer magnetic resonance imaging data set of the target object as the second modality data
- the rectal cancer magnetic resonance imaging data set includes initial rectal cancer magnetic resonance imaging data and target rectal cancer magnetic resonance imaging data
- automatic labeling or manual The way of labeling is to mark the tumor area or the shrinking tumor area in the initial rectal cancer magnetic resonance imaging data and the target rectal cancer magnetic resonance imaging data, and obtain several slice images containing the tumor area or the shrinking tumor area.
- the initial rectal cancer magnetic resonance image data may be data of the target object before receiving treatment
- the target rectal cancer magnetic resonance image data may be data of the target object after receiving treatment.
- the initial clinical data set and the target clinical data set of the target object are acquired as the third modality data, wherein the initial clinical data set and the target clinical data set include at least personal information and case information of the target object.
- the initial clinical data set may be the data of the target subject before receiving treatment
- the target clinical data set may be the data of the target subject after receiving treatment.
- the personal information of the target object may include but not limited to age, height, weight, etc.
- the case information of the target object may include but not limited to family history of malignant tumor, personal history of tumor, treatment plan, tumor location, degree of tumor differentiation, pre-treatment T Staging, N stage before treatment, depth of tumor invasion, distance from tumor to anal verge, etc.
- the initial tumor marker information, target tumor marker information, initial blood information, and target blood information of the target subject are acquired as fourth modality data.
- the initial tumor marker information and initial blood information may be the data of the target subject before receiving treatment
- the target tumor marker information and target blood information may be the data of the target subject after receiving treatment.
- initial tumor marker information and target tumor marker information may include but not limited to carbohydrate antigen 125 (CA125), carbohydrate antigen 153 (CA153), carbohydrate antigen 199 (CA199), carcinoembryonic antigen (CEA) and alpha-fetoprotein (AFP) data; initial blood information and target blood information may include, but not limited to, red blood cells, hemoglobin, platelets, platelet volume, white blood cells, neutrophils, lymphocytes, monocytes, C-reactive protein, ultra Blood routine data such as sensitive C-reactive protein, total protein, albumin and prealbumin.
- CA125 carbohydrate antigen 125
- CA153 carbohydrate antigen 153
- CA199 carbohydrate antigen 199
- CEA carcinoembryonic antigen
- AFP alpha-fetoprotein
- initial blood information and target blood information may include, but not limited to, red blood cells, hemoglobin, platelets, platelet volume, white blood cells, neutrophils, lymphocytes, monocytes, C-
- feature extraction is performed on the medical data to be evaluated for each modality to obtain multiple feature vectors, including:
- the convolution calculation and the maximum pooling operation are performed on the matrix-connected macro-view image, close-view image and micro-view image, and a high-dimensional feature map is extracted;
- feature extraction is performed on the medical data to be evaluated for each modality to obtain multiple feature vectors, including:
- the training process of the first neural network model and the second neural network model includes:
- the initial neural network model training is successful, and a pre-trained neural network model is obtained;
- the initial feature vector does not meet the preset requirements, then by adjusting the loss parameters in the initial neural network model, continue to train the initial neural network model until the loss parameter fits and reaches the preset loss parameter threshold, and the pre-trained neural network model is obtained. network model.
- the first neural network model and the second neural network model may use a three-dimensional convolutional network (3DCNN), which is not limited in this embodiment of the present disclosure.
- 3DCNN three-dimensional convolutional network
- feature extraction is performed on the medical data to be evaluated for each modality to obtain multiple feature vectors, including:
- the numerical features are mapped into a two-dimensional matrix to obtain a third eigenvector and a fourth eigenvector, respectively.
- the target object has no family history of malignant tumors, it is mapped to a number 0; if the target object has a family history of malignant tumors, it is mapped to a number 1; similarly , and map other text description features into corresponding numerical features as follows:
- tumor Personal history of tumor (no 0, yes 1), recurrent tumor (yes 1, no 0), neoadjuvant chemotherapy (yes 1, no 0), neoadjuvant radiotherapy (yes 1, no 0), treatment plan (single drug 1 , double-drug 2, triple-drug 3), tumor location (upper rectum 1, middle rectum 2, lower rectum 3), degree of tumor differentiation (high degree of differentiation 1, degree of differentiation 2, degree of differentiation 3), size (accounting for intestinal 1/3 of the circumference is 0, accounting for 2/3 of the intestinal circumference is 1, accounting for 1 week of the intestinal circumference is 2).
- the fusion feature vector is input to the pre-trained multi-modal fusion evaluation model to obtain the multiple modes to be evaluated outputted by the pre-trained multi-modal fusion evaluation model Results of evaluation of medical data, including:
- Each eigenvector in the fused eigenvector is spliced horizontally to obtain the first matrix W(In) of the eigenvector, and the first function is used to encode the position of the first matrix W(In) of the eigenvector to obtain the second matrix W(In) of the eigenvector P), using the following formula:
- t represents a sub-vector in the first matrix W(In) of the eigenvector
- p(t) represents the encoding result corresponding to the t value
- pos represents the number of eigenvectors that the vector t belongs to
- i represents the number of eigenvectors that the vector t belongs to
- d represents the matrix horizontal direction dimension quantity of the first matrix W (In) of the feature vector
- W(M) Concat(F(1), F(2), . . . , F(i)) W 0 ;
- the CONCAT function represents the second function
- F(1), F(2)...F(i) represents the formula F calculation for the i-th eigensubvector in the second matrix W(P) of the eigenvector
- W o represents the transposition of the first matrix W(In) of the eigenvector
- the x in F(i) represents the i-th eigensubvector in the second matrix W(P) of the input eigenvector;
- Q, K, and V represent the linear perception of the parameter n of the hidden layer of the multimodal fusion evaluation model layer;
- Q(x) means linear regression on x;
- the cross-entropy loss function is used to carry out parameter backpropagation and update until the cross-entropy loss function is fitted.
- An embodiment of the present disclosure also provides an evaluation device for multimodal medical data fusion, as shown in FIG. 3 , including:
- the medical data acquisition module 301 is configured to acquire medical data to be evaluated in multiple modalities of the target object;
- the feature vector extraction module 302 is configured to perform feature extraction on the medical data to be evaluated for each modality to obtain multiple feature vectors;
- the feature vector fusion module 303 is configured to fuse a plurality of feature vectors to obtain a fusion feature vector
- the multi-modal fusion evaluation module 304 is configured to input the fusion feature vector into the pre-trained multi-modal fusion evaluation model, so as to obtain the multiple modalities output by the pre-trained multi-modal fusion evaluation model. The results of the evaluation of the data.
- An embodiment of the present disclosure also provides an electronic device, the structure of which is shown in FIG. 4 , including:
- a processor (processor) 400 and a memory (memory) 401 may also include a communication interface (Communication Interface) 402 and a communication bus 403. Wherein, the processor 400 , the communication interface 402 , and the memory 401 can communicate with each other through the communication bus 403 . Communication interface 402 may be used for information transfer.
- the processor 400 can invoke logic instructions in the memory 401 to execute the evaluation method for multimodal medical data fusion in the above-mentioned embodiments.
- the above logic instructions in the memory 401 may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as an independent product.
- the memory 401 can be used to store software programs and computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure.
- the processor 400 executes the function application and data processing by running the program instructions/modules stored in the memory 401 , that is, realizes the evaluation method of multimodal medical data fusion in the above method embodiments.
- the memory 401 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the terminal device, and the like.
- the memory 401 may include a high-speed random access memory, and may also include a non-volatile memory.
- An embodiment of the present disclosure also provides a computer-readable storage medium storing computer-executable instructions configured to execute the above-mentioned multimodal medical data fusion evaluation method.
- An embodiment of the present disclosure provides a computer program product, including a computer program stored on a computer-readable storage medium.
- the computer program includes program instructions.
- the above-mentioned computer is made to execute the above-mentioned multimodal Evaluation methods for medical data fusion
- the above-mentioned computer-readable storage medium may be a transitory computer-readable storage medium, or a non-transitory computer-readable storage medium.
- An evaluation method, device, device, and storage medium for multi-modal medical data fusion provided by the embodiments of the present disclosure, using three-dimensional convolutional network (3DCNN) technology to fuse multi-view images, to evaluate the macroscopic view of rectal cancer under endoscopy Image, close-view image and micro-view image are fused for feature extraction.
- 3DCNN three-dimensional convolutional network
- the multi-modal fusion evaluation model based on artificial intelligence proposed in this application in addition to having excellent Performance, also has self-attention weight, can rely on its self-perception ability, in the case of missing data (four modal data in the present invention should input at least three modal data), still has relatively excellent performance, can quickly And the output evaluation results are accurate, which is closer to clinical use scenarios. It can assist in the precise evaluation of the degree of remission of the target object's disease under the pathological level after treatment, thereby improving the accuracy of judgment and reducing the medical risk of the target object.
- the technical solutions of the embodiments of the present disclosure can be embodied in the form of software products, which are stored in a storage medium and include at least one instruction to enable a computer device (which may be a personal computer, a server, or a network device, etc.) ) Execute all or part of the steps of the methods of the embodiments of the present disclosure.
- the aforementioned storage medium can be a non-transitory storage medium, including: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc.
- first element could be called a second element, and likewise, a second element could be called a first element, without changing the meaning of the description, as long as all occurrences of "first element” are renamed consistently and all occurrences of "Second component” can be renamed consistently.
- the first element and the second element are both elements, but may not be the same element.
- the terms used in the present application are used to describe the embodiments only and are not used to limit the claims. As used in the examples and description of the claims, the singular forms "a”, “an” and “the” are intended to include the plural forms as well unless the context clearly indicates otherwise .
- the term “and/or” as used in this application is meant to include any and all possible combinations of one or more of the associated listed ones.
- the term “comprise” and its variants “comprises” and/or comprising (comprising) etc. refer to stated features, integers, steps, operations, elements, and/or The presence of a component does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groupings of these.
- an element defined by the statement “comprising a " does not preclude the presence of additional identical elements in the process, method or apparatus comprising the element.
- the disclosed methods and products can be implemented in other ways.
- the device embodiments described above are only illustrative.
- the division of units may only be a logical function division.
- multiple units or components may be combined or may be Integrate into another system, or some features may be ignored, or not implemented.
- the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
- a unit described as a separate component may or may not be physically separated, and a component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to implement this embodiment.
- each functional unit in the embodiments of the present disclosure may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
- each block in a flowchart or block diagram may represent a module, program segment, or portion of code that includes at least one executable instruction for implementing a specified logical function .
- the functions noted in the block may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved.
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Abstract
Description
Claims (10)
- 一种多模态医学数据融合的评估方法,其特征在于,包括:获取目标对象的多种模态的待评估医学数据;分别对每种模态的待评估医学数据进行特征提取,得到多个特征向量;对所述多个特征向量进行融合,得到融合特征向量;将所述融合特征向量输入至预先训练好的多模态融合评估模型,以获取所述预先训练好的多模态融合评估模型输出的所述多种模态的待评估医学数据的评估结果。
- 根据权利要求1所述的方法,其特征在于,所述将所述融合特征向量输入至预先训练好的多模态融合评估模型,以获取所述预先训练好的多模态融合评估模型输出的所述多种模态的待评估医学数据的评估结果,包括:将所述融合特征向量中的各个特征向量进行水平拼接,得到特征向量第一矩阵W(In),通过第一函数对特征向量第一矩阵W(In)进行位置编码,得到特征向量第二矩阵W(P),采用的公式如下:其中,t表示特征向量第一矩阵W(In)中的某一个子向量;p(t)表示t值对应的编码结果;pos表示向量t属于第几特征向量;i表示向量t在特征向量第一矩阵W(In)中的序号位;d表示特征向量第一矩阵W(In)的矩阵水平方向维度数量;将所述特征向量第二矩阵W(P)输入至第二函数,计算得到在子空间上的高维特征表示矩阵W(M),采用的公式如下:W(M)=Concat(F(1),F(2),...,F(i))·W 0;其中,CONCAT函数表示第二函数,F(1)、F(2)……F(i)表示对特征向量第二矩阵W(P)中的第i个特征子向量进行公式F计算;W 0表示特征向量第一矩阵W(In)的转置;F(i)中的x表示输入的特征向量第二矩阵W(P)中的第i个特征子向量;Q、K、V 表示多模态融合评估模型的隐含层的参数n的线性感知层;Q(x)表示对x进行线性回归;通过多模态融合评估模型的编码器对各个图像的所述特征向量进行编码,将所述编码器的输出W(Out)输入至线性回归层,通过线性回归层将W(Out)转换到低维特征表示矩阵,最终经过softmax函数的运算输出评估结果。
- 根据权利要求1所述的方法,其特征在于,所述获取目标对象的多种模态的待评估医学数据,包括以下方式中的至少三种:获取所述目标对象的直肠癌图像数据集作为第一模态数据,其中,所述直肠癌图像数据集至少包括根据肿瘤区域或已退缩肿瘤区域确定的宏观视角图像、近视角图像和微观视角图像;获取所述目标对象的直肠癌磁共振影像数据集作为第二模态数据,其中,所述直肠癌磁共振影像数据集包括初始直肠癌磁共振影像数据和目标直肠癌磁共振影像数据;分别对所述初始直肠癌磁共振影像数据和目标直肠癌磁共振影像数据中的肿瘤区域或已退缩肿瘤区域进行标注,得到若干张包含肿瘤区域或已退缩肿瘤区域的切片图像;获取所述目标对象的初始临床数据集和目标临床数据集作为第三模态数据,其中,所述初始临床数据集和目标临床数据集至少包括目标对象的个人信息和病例信息;获取所述目标对象的初始肿瘤标志物信息、目标肿瘤标志物信息、初始血液信息以及目标血液信息作为第四模态数据。
- 根据权利要求3所述的方法,其特征在于,分别对每种模态的待评估医学数据进行特征提取,得到多个特征向量,包括:将所述第一模态数据、第二模态数据分别输入至预先训练好的神经网络模型;通过所述神经网络模型的硬连线层分别对所述第一模态数据、第二模态数据中的医学图像进行矩阵连接;通过所述神经网络模型的α个三维卷积模块对矩阵连接后的所述医学图像进行卷积计算和最大池化操作,提取出高维特征图;通过所述神经网络模型的β个上采样模块和一个全连接层将最后一个三维卷积核提取出来的高维特征图转换为一维特征向量,分别得到第一特征向量和第二特征向量。
- 根据权利要求3所述的方法,其特征在于,分别对每种模态的待评估医学数据进行特征提取,得到多个特征向量,包括:将所述第三模态数据、第四模态数据中的文字描述特征映射成相应的数值特征;将所述数值特征映射到二维矩阵中,分别得到第三特征向量和第四特征向量。
- 根据权利要求4所述的方法,其特征在于,所述神经网络模型的训练过程包括:将获取到的预设的待评估医学数据作为训练样本输入至相应的初始神经网络模型,以使所述初始神经网络模型输出相应的初始特征向量;若所述初始特征向量满足预设要求,则所述初始神经网络模型训练成功,得到所述预先训练好的神经网络模型;若所述初始特征向量不满足预设要求,则通过调整所述初始神经网络模型中的损失参数,继续对所述初始神经网络模型进行训练,直至所述损失参数拟合并达到预设损失参数阈值,得到所述预先训练好的神经网络模型。
- 根据权利要求1所述的方法,其特征在于,所述多模态融合评估模型的训练过程中采用交叉熵损失函数进行参数反向传播与更新,直至所述交叉熵损失函数拟合。
- 一种多模态医学数据融合的评估装置,其特征在于,包括:医学数据获取模块,被配置为获取目标对象的多种模态的待评估医学数据;特征向量提取模块,被配置为分别对每种模态的待评估医学数据进行特征提取,得到多个特征向量;特征向量融合模块,被配置为对所述多个特征向量进行融合,得到融合特征向量;多模态融合评估模块,被配置为将所述融合特征向量输入至预先训练好的多模态融合评估模型,以获取所述预先训练好的多模态融合评估模型输出的所述多种模态的待评估医学数据的评估结果。
- 一种电子设备,其特征在于,包括处理器、通信接口、存储器和通信总线,其中,处理器,通信接口,存储器通过通信总线完成相互间的通信;存储器,用于存放计算机程序;处理器,用于执行存储器上所存放的程序时,实现权利要求1所述的方法步骤。
- 一种计算机可读存储介质,其上存储有计算机程序,其特征在于,所述计算机程序被处理器执行时实现如权利要求1所述的方法步骤。
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| CN113870259B (zh) | 2022-04-01 |
| JP2024545047A (ja) | 2024-12-05 |
| CN113870259A (zh) | 2021-12-31 |
| JP7599060B2 (ja) | 2024-12-12 |
| EP4432219A1 (en) | 2024-09-18 |
| EP4432219A4 (en) | 2025-01-29 |
| EP4432219B1 (en) | 2026-03-25 |
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