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The first digital radiography systems were introduced in the early-1980s, but the high purchase and maintenance costs, as well as large (for the time) image storage requirements, limited their adoption in the veterinary field unti...
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The first digital radiography systems were introduced in the early-1980s, but the high purchase and maintenance costs, as well as large (for the time) image storage requirements, limited their adoption in the veterinary field until the early- to mid-1990s. Even then, their implementation was primarily limited to tertiary referral centers and larger teaching hospitals. In the last 10 years, however, these systems have proliferated at a rapid rate in equine practice, with an overwhelming array of digital imaging systems now available at a variety of price points.1 The widespread availability of different systems has profound implications to the equine practitioner, and may result in confusion and anxiety for the practitioner considering purchase. Practitioners may fear a competitive disadvantage if seen as old-fashioned by relying on conventional film-screen radiography, although conventional film-screen radiography produces high-quality diagnostic images. Though the price of digital radiography systems continues to decrease, the price of market entry is still significant.
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Radiation dose monitoring in medical imaging examination areas is mandatory for the reduction of patient radiation exposure. Recently, dose monitoring techniques that use digital imaging and communications in medicine (DICOM) dose...
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Radiation dose monitoring in medical imaging examination areas is mandatory for the reduction of patient radiation exposure. Recently, dose monitoring techniques that use digital imaging and communications in medicine (DICOM) dose structured reports (SR) have been introduced. The present paper discusses the setup of a radiation dose monitoring system based on DICOM data from university hospitals in Korea. This system utilizes the radiation dose data-archiving method of standard DICOM dose SR combined with a DICOM modality performed procedure step (MPPS). The analysis of dose data based on a method utilizing DICOM tag information is proposed herein. This method supports the display of dose data from non-dosimeter-attached X-ray equipment. This system tracks data from 62 pieces of equipment to analyze digital radiographic, mammographic, mobile radiographic, CT, PET-CT, angiographic, and fluorographic modalities.
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The production of medical imaging is a continuing trend in healthcare institutions. Quality assurance for planned radiation exposure situations (e.g. X-ray, computer tomography) requires examination-specific set-ups according to s...
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The production of medical imaging is a continuing trend in healthcare institutions. Quality assurance for planned radiation exposure situations (e.g. X-ray, computer tomography) requires examination-specific set-ups according to several parameters, such as patient's age and weight, body region and clinical indication. These data are normally stored in several formats and with different nomenclatures, which hinder the continuous and automatic monitoring of these indicators and the comparison between several institutions and equipment. This article proposes a framework that aggregates, normalizes and provides different views over collected indicators. The developed tool can be used to improve the quality of radiologic procedures and also for benchmarking and auditing purposes. Finally, a case study and several experimental results related to radiation exposure and productivity are presented and discussed.
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Increased public and regulatory scrutiny of imaging-related radiation exposure requires familiarity with current dose-monitoring techniques and best practices. CT-related ionizing radiation exposure has been cited as the largest a...
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Increased public and regulatory scrutiny of imaging-related radiation exposure requires familiarity with current dose-monitoring techniques and best practices. CT-related ionizing radiation exposure has been cited as the largest and fastest growing source of population-wide iatrogenic ionizing radiation exposure. Upcoming federal regulations require imaging centers to familiarize themselves with available dose-monitoring techniques and implement comprehensive strategies to track patient dose, with particular emphasis on CT. Because of institution-specific and vendor-specific technologies, there are significant barriers to adoption and implementation. In this article, the authors outline the core components of a universal dose-monitoring strategy and detail a few of the many available commercial platforms. In addition, the authors introduce a cloud-based hybrid model dose-tracking system with the goal of rapid implementation, multicenter scalability, real-time dose feedback for technologists, cumulative dose monitoring, and optional dose communication to patients and into the record; doing so results in improved patient loyalty, referring physician satisfaction, and opportunity for repeat business.
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Medical image sharing is an important problem in modern radiology, with wide applications in Internet and mobile devices. Some important features need to be added and optimized to medical image sharing. In this paper, we present a...
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Medical image sharing is an important problem in modern radiology, with wide applications in Internet and mobile devices. Some important features need to be added and optimized to medical image sharing. In this paper, we present an extensible Web Access to DICOM Persistent Objects (WADO) middleware based on image cache and real-time Web monitor technology for regional medical image sharing. We first develop the extension method of WADO standard and workflow of extended WADO service. Then, we design a medical image cache method to improve the performance of medical image on-demand transmission. Using the real-time monitor can discover the performance bottlenecks and optimized critical points. The experimental results show that the middleware effectively delivers medical images and reports to Web clients over the Internet, regardless of the platform used for access. It can be deployed in one hospital to provide WADO service to medical workers and also can be applied to regional picture archiving and communication systems (PACS) to transmit medical images and reports to Internet users in a way that is transparent to end-user applications.
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BackgroundThe performance of computer displays represents an important factor influencing the quality of digital radiographs. The aim of this study was to evaluate the performance of computer displays used for the purposes of diag...
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BackgroundThe performance of computer displays represents an important factor influencing the quality of digital radiographs. The aim of this study was to evaluate the performance of computer displays used for the purposes of diagnostic radiology in a sample of dental practices in one Australian state.
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Our study recalculated the use factor of linear accelerators (LINACs) by using an in-house program based on Digital
Imaging and Communications in Medicine radiation therapy (DICOM-RT). We considered the impact of advancements
an...
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Our study recalculated the use factor of linear accelerators (LINACs) by using an in-house program based on Digital
Imaging and Communications in Medicine radiation therapy (DICOM-RT). We considered the impact of advancements
and changes in treatment trends, including modality, technology, and radiation dose, on the use factor, which is one of
the shielding parameters. In accordance with the methodology described in the NCRP 151 report, we computed the use
factor for four linear accelerators (LINACs) across three hospitals. We analyzed the results based on the treatment techniques
and treatment sites for three-dimensional conformal radiation therapy (3D-CRT) and intensity modulated radiation
therapy or volumetric modulated arc therapy. Our findings revealed that the use factors obtained at 45° and 90° were
14.8% and 13.5% higher than those of the NCRP 151 report. In treatment rooms with a high 3D-CRT ratio, the use factor
at a specific angle differed by up to 14.6% relative to the NCRP 151 report value. Our results showed a large difference
in the use factor for specific sites such as the breast and spine, so it is recommended that each institution recalculate the
use factor using patient’s data.
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Picture Archive and Communication System (PACS) is a globally adopted concept and plays a fundamental role in patient care flow within healthcare institutions. However, the deployment of medical imaging repositories over multiple ...
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Picture Archive and Communication System (PACS) is a globally adopted concept and plays a fundamental role in patient care flow within healthcare institutions. However, the deployment of medical imaging repositories over multiple sites still brings several practical challenges namely related to operation and management (O&M). This paper describes a Web-based centralized console that provides remote monitoring, testing, and management over multiple geo-distributed PACS. The system allows the PACS administrator to define any kind of service or operation, reducing the need for local technicians and providing a 24/7 monitoring solution.
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The medical imaging display is a precision instrument with many features not found in commercial-grade displays. The more one understands what these features are and their corresponding clinical value, the better one can make a pu...
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The medical imaging display is a precision instrument with many features not found in commercial-grade displays. The more one understands what these features are and their corresponding clinical value, the better one can make a purchase decision. None of these displays maintain themselves for 5 years or more without some degree of automatic or manual performance testing. Routine calibration conformance checks are beginning to be mandated by the departments of health of many states. Most manufacturers provide mechanisms to perform these checks and keep track of their results, some more easily than others. A consistent display brightness of about 400 cd/m(2) and close conformance to the DICOM curve are the key components of a successful check. Displays are typically characterized by the number of pixels they contain, usually 2, 3, or 5 megapixels, but this is the least useful determinant of image quality. What matters most is the size of the pixels and the size of the whole display, which should be selected on the basis of the typical viewing distance. The farther one's eyes are from the display, the larger the pixels and the overall display size can be while still feeding the eye as much information as it can see. Care should be taken to use the appropriate display in a given setting for the clinical purpose at hand.
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The monitor as a sonography image display device is required to display a gray scale technique satisfying DICOM (Digital Imaging and Communications in Medicine) GSDF (Grayscale Standard Display Function), which is an medical image...
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The monitor as a sonography image display device is required to display a gray scale technique satisfying DICOM (Digital Imaging and Communications in Medicine) GSDF (Grayscale Standard Display Function), which is an medical image standard, in order to display high quality sonography images during the period of use. However, because the monitor attached to the ultrasonic diagnostic equipment unlike general monitors is the monitor that is used only in the ultrasonic diagnostic equipment, it should display the sonography images with uniformity and consistently high quality. In this paper, we propose an SIPCB (sonography image processing circuit board) and two hardware/software calibration algorithms for the color LCD (or LED) monitors attached to the ultrasonic diagnostic equipment in order to obtain the improved color sonography images. As a result, the improved color LCD monitors attached to the ultrasonic diagnostic equipment satisfies the color coordinate deviation of ±0.004 or less using the proposed SIPCB architecture and two hardware/software calibration algorithms.
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