The proceedings contain 98 papers. The topics discussed include: adaptive fiducial-free registration using multiple point selection for real-time electromagnetically navigated endoscopy;geometric estimation of intesti...
ISBN:
(纸本)9780819498298
The proceedings contain 98 papers. The topics discussed include: adaptive fiducial-free registration using multiple point selection for real-time electromagnetically navigated endoscopy;geometric estimation of intestinal contraction for motion tracking of video capsule endoscope;motion magnification for endoscopic surgery;reconstruction and feature selection for desorption electrospray ionization mass spectroscopy imagery;automatic standard plane adjustment on mobile C-Arm CT images of the calcaneus using atlas-based feature registration;mechanically assisted 3D ultrasound for pre-operative assessment and guiding percutaneous treatment of focal liver tumors;optoacoustic sensing for target detection inside cylindrical catheters;and polarization-sensitive multispectral tissue characterization for optimizing intestinal anastomosis.
Brain tumor diagnosis remains a major obstacle in medicalimaging since effective treatment planning requires precise identification and classification. Advanced filtering approaches are needed to improve the diagnost...
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ISBN:
(数字)9798331544607
ISBN:
(纸本)9798331544614
Brain tumor diagnosis remains a major obstacle in medicalimaging since effective treatment planning requires precise identification and classification. Advanced filtering approaches are needed to improve the diagnostic accuracy of imaging modalities such as MRI (magnetic resonance imaging) and computed tomography (CT). Although deep learning has greatly increased the diagnostic accuracy of brain tumor recognition, problems with MRI image preprocessing still exist related to disturbances, relics, and low contrast. By including sophisticated filtering methods as the wavelet Transformation, which is Bilateral Filtration, and guided Filtering, which improves on conventional deep learning-based tumor categorization. To extract reliable tumor features, an integrated deep learning model that combines Efficient Net, the DenseNet and BiLSTM is proposed. With an accuracy of 97.5% as opposed to 90% in conventional CNN models, the results show enhanced segmentation efficiency, classification precision, and superior Grad-CAM visuals. The results show that the combination of sophisticated filters greatly enhances image quality, enabling more accurate tumor segmentation and classification. With the potential to improve diagnostic results offers insights into how these techniques might be incorporated into clinical procedures. Metrics like the Structural Similarity Index (SSIM) and Peak Signal-to-Noise Ratio (PSNR) are used to examine the filters. Despite retaining the structural details and image quality that are crucial to precise tumor diagnosis. These results show how important preprocessing and enhancement are to improve the diagnosis of brain tumors.
Computer-Integrated Interventional Medicine (CIIM) promises to have a profound impact on health care in the next 20 years, much as and for many of the same reasons that the marriage of computers and information proces...
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ISBN:
(纸本)9780819489654
Computer-Integrated Interventional Medicine (CIIM) promises to have a profound impact on health care in the next 20 years, much as and for many of the same reasons that the marriage of computers and information processing methods with other technology have had on manufacturing, transportation, and other sectors of our society. Our basic premise is that the steps of creating patient-specific computational models, using these models for planning, registering the models and plans with the actual patient in the operating room, and using this information with appropriate technology to assist in carrying out and monitoring the intervention are best viewed as part of a complete patient-specific intervention process that occurs over many time scales. Further, the information generated in computer-integrated interventions can be captured and analyzed statistically to improve treatment processes. This paper will explore these themes briefly, using examples drawn from our work at the Engineering Research Center for Computer-Integrated Surgical Systems and Technology (CISST ERC).
One of the most complex and difficult tasks for surgeons during minimally invasive interventions is suturing. A prerequisite to assist the suturing process is the tracking of the needle. The endoscopic images provide ...
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ISBN:
(纸本)9781628415056
One of the most complex and difficult tasks for surgeons during minimally invasive interventions is suturing. A prerequisite to assist the suturing process is the tracking of the needle. The endoscopic images provide a rich source of information which can be used for needle tracking. In this paper, we present an image-based method for markerless needle tracking. The method uses a color-based and geometry-based segmentation to detect the needle. Once an initial needle detection is obtained, a region of interest enclosing the extracted needle contour is passed on to a reduced segmentation It is evaluated with in vivo images from da Vinci interventions.
We present a fiber optical shape sensing system that allows to track the shape of a standard telecom fiber with fiber Bragg grating. The shape sensing information is combined with a medical visualization platform to v...
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ISBN:
(纸本)9781628415056
We present a fiber optical shape sensing system that allows to track the shape of a standard telecom fiber with fiber Bragg grating. The shape sensing information is combined with a medical visualization platform to visualize the shape sensing information together with medicalimages and post-processing results like 3D models, vessel graphs, or segmentation results. The framework has a modular nature to use it for various medical applications like catheter or needle based interventions. The technology has potential in the medical area as it is MR-compatible and can easily be integrated in catheters and needles due to its small size.
Accurate and reliable medicalimage analysis, particularly in lung nodule segmentation, plays a crucial role in data-driven healthcare assistance technologies. Current evaluation metrics for segmentation algorithm per...
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ISBN:
(纸本)9781510671614;9781510671607
Accurate and reliable medicalimage analysis, particularly in lung nodule segmentation, plays a crucial role in data-driven healthcare assistance technologies. Current evaluation metrics for segmentation algorithm performance, however, lack specificity to individual use cases and may not adequately assess the accuracy of 2D segmentation in context. In this preliminary work, we propose a novel evaluation approach that incorporates use case-specific evaluation metrics, focusing particularly on the spatial congruence and mass center accuracy of the nodule segmentation in the context of robot-assisted image-guidedinterventions. By simulating predicted segmentation masks using distortion techniques applied to ground truth masks from the LIDC-IDRI dataset, we compute the Dice score and Hausdorff distance, two common metrics for segmentation algorithm evaluation, as well as two proposed metrics, a Mass Center and a Centered Overlap score. Our preliminary findings indicate that the proposed metrics are superior to traditional ones, providing a more descriptive evaluation within the context of the intended use case. Future work will include comprehensive assessments of more extensive simulation techniques as well as the development and evaluation of a custom segmentation algorithm trained using our proposed metrics. By promoting the adoption of use case-specific metrics, we aim to improve the performance of segmentation algorithms, and ultimately, the outcome of critical healthcare procedures.
image-guided procedure with intraoperative imaging updates has made a big impact on minimally invasive surgery. Compact and mobile CT imaging device combining with current commercial available imageguided navigation ...
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ISBN:
(纸本)9781510600218
image-guided procedure with intraoperative imaging updates has made a big impact on minimally invasive surgery. Compact and mobile CT imaging device combining with current commercial available imageguided navigation system is a legitimate and cost-efficient solution for a typical operating room setup. However, the process of manual fiducial-based registration between image and physical spaces (image-to-world) is troublesome for surgeons during the procedure, which results in much procedure interruptions and is the main source of registration errors. In this study, we developed a novel method to eliminate the manual registration process. Instead of using probe to manually localize the fiducials during the surgery, a tracking plate with known fiducial positions relative to the reference coordinates is designed and fabricated through 3D printing technique. The workflow and feasibility of this method has been studied through a phantom experiment.
We propose a consistent ultrasound volume stitching framework, with the intention to produce a volume with higher image quality and extended field-of-view in this work. Directly using pair-wise registrations for stitc...
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ISBN:
(纸本)9781510633988
We propose a consistent ultrasound volume stitching framework, with the intention to produce a volume with higher image quality and extended field-of-view in this work. Directly using pair-wise registrations for stitching may lead to geometric errors. Therefore, we propose an approach to improve the image alignment by optimizing a consistency metric over multiple pairwise registrations. In the optimization, we utilize transformed points to effectively compute a distance between rigid transformations. The method has been evaluated on synthetic, phantom and clinical data. The results indicate that our transformation optimization method is effective and our stitching framework has a good geometric precision. Also, the compound images have been demonstrated to have improved CNR values.
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