Digital subtraction angiography: overview of technical principles

Dp, Harrington; Lm, Boxt; Murray, PD

doi:10.2214/ajr.139.4.781

Cited by 70 publications

(25 citation statements)

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“…DSA is a computer-assisted technique that integrates digital data collection and computer processing to produce a medical image (Harrington et al, 1982). The examination has been used for diagnosis of arterial diseases of the hand (Wallner et al, 1989).…”

Section: Introductionmentioning

confidence: 99%

Use of digital subtraction angiography for assessment of digital replantation

Wang

Zhang

2012

J. Zhejiang Univ. Sci. B

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Abstract:Objective: To assess the blood flow of the proper digital artery using digital subtraction angiography (DSA) in the early stage after replantation. Methods: From January 2006 to October 2010, 27 anastomosed arteries in 27 replanted digits were included in the study. The patients included nine males and four females. The patients received DSA at 48 to 96 h after digital replantation. Based on DSA image, the blood flow was classified into normal, slow-running, and flow-stopping types. The patients with normal digital blood flow were given continuous routine treatments; the patients with slow-running flow were given the conservative treatments, such as release of the tight dressings, removal of stitches, keeping warm, the use of massage, and the use of anticoagulants and anti-inflammatory drugs; the patients with flow-stopping received immediate surgical re-exploration. Results: In this series, 23 digits in 11 patients showed a normal blood flow, and these digits all survived. In one of 13 patients, two digits which displayed slow-running flow also survived after conservative treatments. In two of 13 patients, two digits showed flow stopping, with one surviving and one failing after re-exploration and arterial revision. Conclusions: The DSA can be used to assess the blood flow of the proper digital artery in the early stage after replantation. It provides essential information for salvaging the replanted finger.

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Section: Introductionmentioning

confidence: 99%

Use of digital subtraction angiography for assessment of digital replantation

Wang

Zhang

2012

J. Zhejiang Univ. Sci. B

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“…Digital angiography is an extension of conventional angiography wherein radiographic images are electronically digitized, that is converted into an array of numbers (5)(6)(7). In most equipment, each number is logarithmically proportional to the X-ray intensity at one point in the image.…”

Section: Digital Angiographymentioning

confidence: 99%

Hepatic Imaging: Positron Emission Tomography, Digital Angiography, and Nuclear Magnetic Resonance Imaging

et al. 2007

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Major advances in diagnostic imaging of the human body have been made in recent years. Positron emission tomography, a technique founded on advances in radiopharmaceuticals and radionuclide imaging apparatus, permits imaging regional metabolism, metabolite distribution, and flow. Thus far, its major applications have been in the study of the brain, and to a lesser extent, the heart; however, it is also finding a role in the study of the liver. Digital angiography is being applied to fluoroscopic systems which permits visualization of relatively low doses of intravascular iodinated radiographic contrast media. Imaging of the major arteries is possible using simple intravenously administered contrast media; digital techniques also increase the diagnostic yield in intraarterial studies. Nuclear magnetic resonance (NMR) imaging is an outgrowth of laboratory NMR spectroscopy; the interaction of radiofrequency signals with nuclei in strong magnetic fields permits imaging the distribution and certain chemical properties of various isotopes. Hydrogen NMR imaging is proving most useful for clinical diagnosis. The techniques used to image hydrogen are also being applied to NMR spectroscopy in viuo of various isotopes, including carbon-13, phosphorus-3 1, and hydrogen-1.Medical imaging began shortly after discovery of Xrays by Roentgen in 1895. Until the past few decades, radiography of the abdomen was limited to the familiar abdominal X-ray or "flat-plate." Such films are projectional images; the three-dimensional structure of the abdomen is projected onto a two-dimensional film with consequent superposition of overlying structures. Both the projectional nature and poor contrast resolution of plain films limit their diagnostic potential for evaluating an organ such as the liver; the overall size is easily determined but, with few exceptions (such as air in the biliary tree), little can be said about internal architecture. The development of ultrasound, radionuclide imaging, and computed tomography greatly enhanced our ability to image the liver, and to diagnose hepatic disease. This paper will review mechanisms, applications, and other features of the newest imaging modalities, [viz. positron emission tomography, digital angiography, and nuclear magnetic resonance imaging (NMR)]. Theoretical and Address reprints requests to:

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“…Remarkable advances in imaging technology over the recent years have resulted in notable improvement of imaging acquisition and postprocessing techniques in FDCT. In addition to digital subtraction angiography (DSA), which is obtained by subtraction of images before from after contrast medium injection and removing superimposed bone and soft tissue densities [1], FDCT can provide CT-like brain parenchyma images (DynaCT) and three-dimensional morphological and hemodynamic datasets of vasculatures, by combining one or more C-arm rotations. Consequently, a one-stop peritherapeutic imaging service has become feasible.…”

Section: Introductionmentioning

confidence: 99%

Toward the Era of a One-Stop Imaging Service Using an Angiography Suite for Neurovascular Disorders

Hung

Lin

Guo

et al. 2013

BioMed Research International

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Transportation of patients requiring multiple diagnostic and imaging-guided therapeutic modalities is unavoidable in current radiological practice. This clinical scenario causes time delays and increased risk in the management of stroke and other neurovascular emergencies. Since the emergence of flat-detector technology in imaging practice in recent decades, studies have proven that flat-detector X-ray angiography in conjunction with contrast medium injection and specialized reconstruction algorithms can provide not only high-quality and high-resolution CT-like images but also functional information. This improvement in imaging technology allows quantitative assessment of intracranial hemodynamics and, subsequently in the same imaging session, provides treatment guidance for patients with neurovascular disorders by using only a flat-detector angiographic suite—a so-called one-stop quantitative imaging service (OSIS). In this paper, we review the recent developments in the field of flat-detector imaging and share our experience of applying this technology in neurovascular disorders such as acute ischemic stroke, cerebral aneurysm, and stenoocclusive carotid diseases.

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Digital subtraction angiography: overview of technical principles

Cited by 70 publications

References 0 publications

Use of digital subtraction angiography for assessment of digital replantation

Use of digital subtraction angiography for assessment of digital replantation

Hepatic Imaging: Positron Emission Tomography, Digital Angiography, and Nuclear Magnetic Resonance Imaging

Toward the Era of a One-Stop Imaging Service Using an Angiography Suite for Neurovascular Disorders

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