- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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PACS-Based Multimedia Imaging Informatics (Basic Principles and Applications) || Digital Medical Imaging
摘要： The chapter discusses the fundamentals of digital medical imaging, including two-dimensional (2-D) and three-dimensional (3-D) imaging techniques, image compression, and the integration of imaging informatics with patient imaging workflows. It covers various imaging modalities such as computed radiography (CR), digital mammography, nuclear medicine imaging, ultrasound imaging, and magnetic resonance imaging (MRI), highlighting their principles, applications, and the challenges in archiving and transmitting large datasets.
关键词： digital medical imaging,computed radiography,ultrasound imaging,digital mammography,PACS,2-D imaging,image compression,3-D imaging,nuclear medicine imaging,magnetic resonance imaging
更新于2025-09-10 09:29:36
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Multimodal medical imaging repository and information system in epilepsy surgery
摘要： Surgery is an option for patients with drug-resistant epilepsy, but it requires a comprehensive assessment. Electroencephalography (EEG), magnetic resonance imaging (MRI), and functional MRI (fMRI) are used to localize the epileptogenic zone, which directly affects the surgery outcome. Accessing EEG, MRI, and fMRI results and patient information simultaneously using traditional methods might result in misinformation and increase the workload of clinicians. In this study, we developed a modern web-based repository system for the preoperative evaluation of epilepsy disorder, including multimodal medical images and patient information. Our dedicated system is enriched with clinical metadata that are not currently available and is managed with an online application. It overcomes the identified problem and minimizes possible medical errors. In conclusion, this system has the potential to accelerate surgical procedures, get reliable results, and improve the seizure outcome. It is an extensive solution for epilepsy hospitals and clinical research centers. It may serve as a standard template for archiving multiple imaging techniques.
关键词： epilepsy surgery,Health information management,information system,multimodal medical imaging,electronic health records
更新于2025-09-10 09:29:36
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Scan, dwell, decide: Strategies for detecting abnormalities in diabetic retinopathy
摘要： Diabetic retinopathy (DR) is a disease which is widely diagnosed using (colour fundus) images. Efficiency and accuracy are critical in diagnosing DR as lack of timely intervention can lead to irreversible visual impairment. In this paper, we examine strategies for scrutinizing images which affect diagnostic performance of medical practitioners via an eye-tracking study. A total of 56 subjects with 0 to 18 years of experience participated in the study. Every subject was asked to detect DR from 40 images. The findings indicate that practitioners use mainly two types of strategies characterized by either higher dwell duration or longer track length. The main findings of the study are that higher dwell-based strategy led to higher average accuracy (> 85%) in diagnosis, irrespective of the expertise of practitioner; whereas, the average obtained accuracy with a long-track length-based strategy was dependent on the expertise of the practitioner. In the second part of the paper, we use the experimental findings to recommend a scanning strategy for fast and accurate diagnosis of DR that can be potentially used by image readers. This is derived by combining the eye-tracking gaze maps of medical experts in a novel manner based on a set of rules. This strategy requires scrutiny of images in a manner which is consistent with spatial preferences found in human perception in general and in the domain of fundus images in particular. The Levenshtein distance-based assessment of gaze patterns also establish the effectiveness of the derived scanning pattern and is thus recommended for image readers.
关键词： eye-tracking,visual perception,diagnostic strategies,Diabetic retinopathy,medical imaging
更新于2025-09-10 09:29:36
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High Dynamic Range Video || An Application of HDR in Medical Imaging
摘要： The “slow revolution” that brought the field of diagnostic radiology from analog film to digital imaging paved the way to important benefits that were progressively achieved in the last few decades: above all, the possibility for medical personnel to rapidly share huge amounts of patient-related information. However, some of the consequences of the analog-to-digital shift were problematic. One issue, whose importance is often underestimated, was the visual quality of the images presented to the physician. As will be described in detail herein, the requirements of the different specialties with regard to medical images span a wide range; the weakest link in the processing chain, which determines the overall quality, is frequently the display equipment. In particular, the dynamic range of the luminance that the device can emit and its relation to the typical illumination of the environment in which the device operates should be considered with care. Old analog films placed on a lightbox could yield peaks of 4000 cd/m2, and could span a luminance range of several log units: this made details well visible even in a highly illuminated room. The best medical CRT displays at the time of the digital transition, instead, had a maximum luminance in the several hundred candelas per square meter (cd/m2) range. Only later did LCDs reach 1000 cd/m2, at the price of an undesired higher luminance for “black” pixels. In this chapter we will describe a solution aimed at overcoming dynamic range problems in the visualization of medical images. We will first analyze the specific requirements for a high dynamic range (HDR) display that should operate in the medical (diagnostic) context, and the procedures that are followed in a laboratory of the US Food and Drug Administration to evaluate such a display. We will then describe in some detail an LCD composed of two stacked liquid crystal panels, a prototype of which is presently being developed at Barco.
关键词： Visualization,LCD,Dual-Layer,Medical Imaging,High Dynamic Range
更新于2025-09-09 09:28:46
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CHALLENGES IN APPLICATION OF LUMINESCENT MATERIALS, A TUTORIAL OVERVIEW (Invited Review)
摘要： In this paper, a number of di?erent application ?elds of inorganic luminescent materials are being discussed. In a tutorial manner, it will be shown how device requirements are being translated into properties the luminescent materials need to have. To this end many di?erent material properties that have a strong in?uence on the device performance are discussed, such as the shape, the spectral position of the absorption- and emission bands and the decay time of the emission. The light yield under excitation with ionizing radiation, the energy resolution and the occurrence of afterglow are being treated as well. Subsequently, strategies are shown how to optimize these properties. Examples are given for light sources (?uorescent lamps and LEDs), radiation sources used for disinfection purposes and also for devices used in medical imaging and in horticultural applications.
关键词： medical imaging,horticulture,LEDs,disinfection,luminescent materials
更新于2025-09-09 09:28:46
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[ACM Press the 3rd International Conference - Tetouan, Morocco (2018.10.10-2018.10.11)] Proceedings of the 3rd International Conference on Smart City Applications - SCA '18 - Usage of watermarking techniques in medical imaging
摘要： In this paper, we present the usage of watermarking techniques in the medical imaging, watermarking is considered a great solution to protect the personal data of patients during the medical images and telemedicine data exchange. This paper is devised in two parts. The first one is reserved for an overview on image watermarking with a presentation of the most important requirements of watermarking (robustness, imperceptibility and capacity). We offer also the general scheme of watermarking with the two essential phases and different types of attacks. Furthermore, we present a classification of watermarking techniques based on various parameters such as: insertion domain, human perception and detection methods, in the end of the section we display some metrics and benchmarks for analysis the performance of the watermarking technique. The second part is reserved for the usage of watermarking techniques in medical imaging especially for integrity verification, authentication and data hiding, we also discuss a literature review on watermarking techniques for medical image. In addition, we present the concept of telemedicine and telehealth fields and the importance of watermarking in the modern health care.
关键词： telemedicine,e-health,medical imaging,medical image watermarking (MIW),Watermarking
更新于2025-09-04 15:30:14
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FPGA logic design method based on multi resolution image real time acquisition system
摘要： Medical imaging techniques are mostly generated by human tissue echoes and received by the transducer which is converted to electrical signals, after amplification, extraction, processing, and then signals are converted by the digital scan converter for standard video signal, finally displayed by the display. We propose a scheme of real-time and multi resolution image acquisition system by FPGA control logic design based on the real-time data acquisition, beam forming, processing, acquisition and transmission to ARM embedded video signal processing system with high real-time requirements, so we choose FPGA and SRAM real-time acquisition system which can meet the above requirements in speed and capacity. According to the problems encountered in the process of high speed acquisition, a reasonable timing optimization and RTL level synthesis is designed. The experimental results show that the design and implementation of the image acquisition system is not only stable, but also significantly improve the overall performance of the image processing system.
关键词： SRAM,FPGA,RTL level synthesis,Medical imaging techniques
更新于2025-09-04 15:30:14
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[ACM Press the 7th International Conference - Cairo, Egypt (2018.05.02-2018.05.04)] Proceedings of the 7th International Conference on Software and Information Engineering - ICSIE '18 - An Interactive Mixed Reality Imaging System for Minimally Invasive Surgeries
摘要： In orthopedic surgery, it is important for physicians to completely understand the three-dimensional (3D) anatomical structures for several procedures. With the current revolution in technology in every aspect of our life, mixed reality in the medical field is going to be very useful. However, medicine has a visualization problem hindering how surgeons operate. The surgeons are required to imagine the actual 3D structure of the patient by looking at multiple 2D slices of the patients’ body. This process is time consuming, exhausting and requires special skill and experience. Moreover, patients and surgeons are exposed to extra x-ray doses. Therefore, it is important to provide the surgeon with a better way to diagnose the patient; a way that is more accurate and locates where the problem is in a faster and more efficient manner. Medical imaging systems usually provide 3D images that can guide interventional clinical procedures. However, it is difficult to map the 3D anatomical structure with real objects. This project investigates and solves this problem by providing a mixed reality technology solution that merges the 3D image with real objects to facilitate the work progress of the surgeon. The proposed solution is an interactive mixed reality (MR) system for minimally invasive surgeries. The system is based on mapping the patient volume scan using computed tomography (CT) or Magnetic Resonance Imaging (MRI) to a 3D model of the patient’s body. The rendered model can be used in MR system to view 3D human structures through a set of wearable glasses.
关键词： mixed reality,volume rendering,medical imaging
更新于2025-09-04 15:30:14