Digital K-Edge Subtraction Radiography

Kruger, Robert A.; Mistretta, Charles A.; Crummy, Andrew B.; Sackett, Joseph F.; Goodsitt, Mitchell M.; Riederer, Steven J.; Houk, T. L.; Shaw, C. G.; Fleming, David E.B.

doi:10.1148/125.1.243

Cited by 61 publications

(19 citation statements)

References 3 publications

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“…The work grew out of research with video-based and other digital detector systems. 14,15 The first digital subtraction angiogram was successfully performed and reported in 1977, followed by other digital imaging applications in radiology. [16][17][18] These developments paved the way for direct transmission of digitally acquired images for the practice of teleradiology.…”

Section: Modalities Of Teleradiologymentioning

confidence: 99%

The Empirical Foundations of Teleradiology and Related Applications: A Review of the Evidence

Bashshur

Krupiński

Thrall

et al. 2016

Telemedicine and e-Health

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Introduction: Radiology was founded on a technological discovery by Wilhelm Roentgen in 1895. Teleradiology also had its roots in technology dating back to 1947 with the successful transmission of radiographic images through telephone lines. Diagnostic radiology has become the eye of medicine in terms of diagnosing and treating injury and disease. This article documents the empirical foundations of teleradiology. Methods: A selective review of the credible literature during the past decade (2005-2015) was conducted, using robust research design and adequate sample size as criteria for inclusion. Findings: The evidence regarding feasibility of teleradiology and related information technology applications has been well documented for several decades. The majority of studies focused on intermediate outcomes, as indicated by comparability between teleradiology and conventional radiology. A consistent trend of concordance between the two modalities was observed in terms of diagnostic accuracy and reliability. Additional benefits include reductions in patient transfer, rehospitalization, and length of stay.

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Section: Modalities Of Teleradiologymentioning

confidence: 99%

The Empirical Foundations of Teleradiology and Related Applications: A Review of the Evidence

Bashshur

Krupiński

Thrall

et al. 2016

Telemedicine and e-Health

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“…The introduction of angiography [1][2][3] revolutionized the diagnosis and management of arterial disease in multiple vascular beds.…”

Section: ¤ ¤mentioning

confidence: 99%

Angiography Underestimates Peripheral Atherosclerosis:Lumenography Revisited

Kashyap¹,

Pavkov²,

Bishop³

et al. 2008

Journal of Endovascular Therapy

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Purpose: To compare angiograms, considered the gold standard for diagnostic imaging of peripheral arterial disease (PAD), to the corresponding histological sections of popliteal and tibial vessels obtained after amputation to determine if angiography fails to define atheroma burden in “normal appearing” arteries in patients with PAD. Methods: Between 2004 and 2006, 69 patients underwent amputation of a lower extremity for severe tissue loss, gangrene, or pedal sepsis precluding limb salvage. Popliteal and tibial vessels were harvested, perfusion-fixed, and analyzed histologically. Thirty-four of these patients had pre-amputation angiography during attempted salvage procedures. Angiograms with patent or minimally diseased vessel segments (n=19) were assessed for stenoses, diameter, and calcification by 3 vascular surgeons (n=72 evaluations). These results were compared to corresponding cross-sectional histological slides (n=66) in a blinded manner. Results: Angiograms performed prior to above-knee (n=9) or below-knee (n=10) amputation revealed 24 stenoses with a mean (±SD) diameter-reducing stenosis of 19.5%±15.2%. Corresponding histological cross sections revealed greater linear stenoses measured via boundaries of the internal elastic lamina (IEL stenosis, 28.9%±20.2%, p=0.003 versus angiography) or via boundaries of the external elastic membrane (vessel stenosis, 43.1%±15.2%, p<0.0001). Stenosis calculated by area methods (IEL area) were greater and measured 39.2%±24.2% (p<0.0001) and 60.9%±15.2% (vessel area, p<0.0001). Popliteal arteries had greater discrepancy in stenosis measurement than tibial arteries (18.5%±14.6% versus 34.9%±21.0%, p=0.0005). However, evaluations of tibial arteries for concentricity of plaque (44% versus 69%, p=0.08) and calcification grade (1.6 versus 2.2, p=0.002) by angiography were discordant with histological analyses. Measurement of arterial diameter by histology for popliteal arteries (6.2±0.9 mm) and tibial arteries (3.1±0.7 mm) was greater than angiographic diameter determination (p<0.001). Conclusion: Angiography provides information on luminal characteristics of peripheral arteries but severely underestimates the extent of atherosclerosis in patients with PAD even in “normal appearing” vessels.

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“…Experimental digital subtraction angiography was first described in 1977 by Kruger et al (1) and introduced into clinical use as the first digital imaging system in 1980 (2). For general radiography, x-ray images were first recorded digitally with cassette-based storage-phosphor image plates, which were also introduced in 1980 (3).…”

Section: Introductionmentioning

confidence: 99%

Advances in Digital Radiography: Physical Principles and System Overview

Körner¹,

Weber²,

Wirth³

et al. 2007

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During the past two decades, digital radiography has supplanted screen-film radiography in many radiology departments. Today, manufacturers provide a variety of digital imaging solutions based on various detector and readout technologies. Digital detectors allow implementation of a fully digital picture archiving and communication system, in which images are stored digitally and are available anytime. Image distribution in hospitals can now be achieved electronically by means of web-based technology with no risk of losing images. Other advantages of digital radiography include higher patient throughput, increased dose efficiency, and the greater dynamic range of digital detectors with possible reduction of radiation exposure to the patient. The future of radiography will be digital, and it behooves radiologists to be familiar with the technical principles, image quality criteria, and radiation exposure issues associated with the various digital radiography systems that are currently available.

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Digital K-Edge Subtraction Radiography

Cited by 61 publications

References 3 publications

The Empirical Foundations of Teleradiology and Related Applications: A Review of the Evidence

The Empirical Foundations of Teleradiology and Related Applications: A Review of the Evidence

Angiography Underestimates Peripheral Atherosclerosis:Lumenography Revisited

Advances in Digital Radiography: Physical Principles and System Overview

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