| 摘要(英) |
Medical imaging technology, the most effective method for detecting cell tissue or representations of the interior of a body, including radiography, ultrasound, computerized tomography (CT), magnetic resonance imaging (MRI), cardiac angiography and optical microscopy, etc. plays a vital role in clinical analysis.
However, the analysis of images mostly regarded as an operator-dependent method is time-consuming and has narrow limitations when it is necessary to process complex and large amounts of medical images for medical diagnosis.
Recently, the rapid development of technology such as artificial intelligence and big data in imaging has triggered a vigorous growth in medical imaging applications that assist doctors in making initial interpretation of barely imperceptible symptoms and even primary diagnosis for the relevant symptoms from those complicated and large data.
In this paper, Mask Region-based Convolutional Neural Network (Mask RCNN) applied a series of biomedical image object detection for establishing the detection system and the deep learning model for blood cells and chest X-rays respectively.
The model also equipped with a faster convolutional neural network (Faster RCNN) which fulfills the goal of target object identification and coordinate calibration.
Simultaneously, integrated with the method of instance segmentation for automatic segmentation and the construction of pixel-level foreground and background for each target object, the pixel-level mask model system was established successfully to visualize the object counter in the bounding box to make a medical judgment by blood cells and symptoms of the lung.
Moreover, the study organized a new database for blood cells and pulmonary nodules of chest X-ray, then fine-tuned the model and applied with transfer learning to accelerate the training speed, and replaced traditional selective search with Region Proposal Network (RPN) to enhance the recognition rate and the speed of selecting of regions of interest. In this study, the frame per second can be as high as 15 images per second, and the mean average precision calculated in the classification of blood cells is 0.931 and that of pulmonary nodules is 0.911, respectively. While in instance segmentation, intersection over union was applied to calculate the accuracy of the symptom mask of blood cells and chest X-ray which could reach 0.961 and 0.928, respectively. Eventually, the result provided the necessary empirical evidence that the detection system established by the study will realize the vision to assist health professionals with the rapid and effective clinical diagnosis of clinical application. |
| 參考文獻 |
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