Computed TomographyRadiographyInterventionalIntravenousScintigraphyRotational angiographyMagneticStenosisBlood vesselsCatheterInvasiveAbstractCerebralPatients underwentVesselOcclusionVisualizationPulmonaryArteryTechniqueExaminationConventionalDiagnosticArterialDescriptorScanAlgorithmsVascular structuresAngiogramAssessmentMethodsProcedureDiagnosisAneurysmImagesInterpretationImagingEquipmentAbdominalTreatmentTermDataAccurateShowsTechnologyPatientPeople
Computed Tomography6
- It is being replaced by computed tomography angiography (CTA), which can produce 3D images through a test which is less invasive and stressful for the patient, and magnetic resonance angiography (MRA), which avoids X-rays and nephrotoxic contrast agents. (wikipedia.org)
- Angiography Computed tomography angiography (CTA) Contrast medium Peripheral artery disease X-ray image intensifier Digital variance angiography (DVA) Glick, Yair. (wikipedia.org)
- Radiologic modalities used for assessment include lung scintigraphy, digital subtraction pulmonary angiography (DSPA), pulmonary computed tomography angiography (PCTA), and pulmonary magnetic resonance angiography (PMRA). (medscape.com)
- Various imaging modalities may be employed to diagnose and define a source of bleeding, including colonoscopy, nuclear scintigraphy with technetium‐99m‐labeled red blood cell or 99mTc sulfur colloid, computed tomography, and transcatheter digital subtraction angiography. (medscape.com)
- CT angiography In computed tomography (CT), which used to be called computed axial tomography (CAT), an x-ray source and x-ray detector rotate around a person. (msdmanuals.com)
- HlthRes-DB also contains indicators on the availability of the following medical equipment: computed tomography (CT) scanners, magnetic resonance imaging (MRI) units, positron emission tomography (PET) scanners, gamma cameras, digital subtraction angiography units, mammographs, radiation therapy equipment and lithotriptors. (who.int)
Radiography1
- During the 1970s, screen film X-rays were the standard for radiography and angiography. (nxtbook.com)
Interventional2
- Digital subtraction angiography (DSA) is a fluoroscopy technique used in interventional radiology to clearly visualize blood vessels in a bony or dense soft tissue environment. (wikipedia.org)
- Interventional digital subtraction angiography for small bowel gastrointestinal stromal tumors with bleeding. (wjgnet.com)
Intravenous2
- Intravenous digital subtraction angiography (IV-DSA) is a form of angiography which was first developed in the late 1970s. (wikipedia.org)
- Using intravenous digital subtraction angiography for carotid, cerebral, and renal arteries, a comparison was made between a single pulsed image and an integrated image composed of several pulsed images. (elsevierpure.com)
Scintigraphy2
- Ultrasonography (US), CT, MRI, cholangiography, angiography and scintigraphy are the most common radiological modalities used to evaluate the hepatic graft. (medscape.com)
- Radiographic interventions (tagged red blood cell scintigraphy, computed tomographic angiography, and angiography) should be considered in high-risk patients with ongoing bleeding who do not respond adequately to resuscitation and who are unlikely to tolerate bowel preparation and colonoscopy. (medscape.com)
Rotational angiography4
- Therefore, we retrospectively analyzed DSA images and 3D rotational angiography with a review of literature for an imaging definition of microvascular anatomy of the brain stem. (ajnr.org)
- image matrix 2480 × 1920 pixels) and 3D rotational angiography reconstructions (5 second DSA, subtraction technique) obtained on Axiom Artis zee biplane neuroradiologic angiography equipment using standard protocol. (ajnr.org)
- This report describes three-dimensional (3D) fusion digital subtraction angiography (FDSA), a new algorithm for rotational angiography that combines reconstructions of the blood vessels and the osseous frame in a single 3D representation. (johnshopkins.edu)
- Gailloud, P , Oishi, S & Murphy, K 2005, ' Three-dimensional fusion digital subtraction angiography: New reconstruction algorithm for simultaneous three-dimensional rendering of osseous and vascular information obtained during rotational angiography ', American Journal of Neuroradiology , vol. 26, no. 4, pp. 908-911. (johnshopkins.edu)
Magnetic4
- This is because MRA ( magnetic resonance angiography ) and CT angiography give clearer images. (medlineplus.gov)
- Computed tomographic angiography (CTA) and magnetic resonance angiography (MRA) are routinely utilized nowadays in clinical practice. (hindawi.com)
- Magnetic resonance angiography (MRA) In magnetic resonance imaging (MRI), a strong magnetic field and very high frequency radio waves are used to produce highly detailed images. (msdmanuals.com)
- [ 1 , 2 ] yet these modern vascular imaging techniques including transcranial Doppler (TCD) ultrasonography, computed tomographic angiography (CTA), and magnetic resonance angiography (MRA) are not as accurate as the gold standard of conventional or digital subtraction angiography (DSA) (see the image below). (medscape.com)
Stenosis1
- Our purpose was to evaluate the ability of helical CT angiography (CTA) to help detect and quantify intracranial stenosis and occlusion compared with DSA and MR angiography (MRA). (arizona.edu)
Blood vessels5
- In traditional angiography, images are acquired by exposing an area of interest with time-controlled x-rays while injecting a contrast medium into the blood vessels. (wikipedia.org)
- Cerebral angiography is most often used to identify or confirm problems with the blood vessels in or around the brain. (medlineplus.gov)
- In angiography, x-rays are used to produce detailed images of blood vessels. (msdmanuals.com)
- During angiography, doctors can also treat disorders of blood vessels. (msdmanuals.com)
- Coronary angiography Cardiac catheterization and coronary angiography are minimally invasive methods of studying the heart and the blood vessels that supply the heart (coronary arteries) without doing surgery. (msdmanuals.com)
Catheter4
- Angiography with a catheter is used less often now. (medlineplus.gov)
- Next, the Rim catheter was placed in the descending abdominal aorta just above the origin of the iliac arteries and 8-10 mL of contrast was used for digital subtraction. (aapc.com)
- Cerebral Angiography: Catheter. (msdmanuals.com)
- The gold standard for intracerebral vascular imaging remains catheter angiography (Fig 2-11). (aao.org)
Invasive3
- 1 after initial resuscitation and/or active bleeding is suspected, CT angiography provides the fastest and least invasive means to localize the site of blood loss before planning endoscopic or radiological therapy. (medscape.com)
- Angiography, although invasive, is relatively safe. (msdmanuals.com)
- Digital subtraction angiography (DSA), although invasive, is the criterion standard. (medscape.com)
Abstract1
- Abstract Digital subtraction angiography (DSA) is often used to evaluate the morphological and pathological changes of cerebral arteries in clinical practice. (techscience.com)
Cerebral3
- Cerebral angiography is a procedure that uses a special dye (contrast material) and x-rays to see how blood flows through the brain. (medlineplus.gov)
- Cerebral angiography is done in the hospital or radiology center. (medlineplus.gov)
- C-arm CT angiography is an established modality for cerebral imaging as it provides very high spatial resolution. (uni-erlangen.de)
Patients underwent1
- Fifty-four patients underwent bone-subtraction CTA (BSCTA) for the evaluation of the neck vessels with 64-section CT. (ajnr.org)
Vessel1
- In the future, further refinement of imaging techniques is necessary to increase the reliability of small vessel angiography to use this data for risk assessment before stent placement and aneurysm treatment. (ajnr.org)
Occlusion1
- Subsequent angiography confirmed occlusion at the hepatic arterial anastomosis. (medscape.com)
Visualization4
- 1 , 2 Because of the small diameter of these side branches of 383 μm, visualization by different means of angiographic imaging like CT- or MR-based angiography is difficult and uncertain. (ajnr.org)
- To eliminate voxels representing bone or calcification in the final image and prevent them from possibly obscuring the visualization of vessels, one may apply bone-subtraction techniques. (ajnr.org)
- BACKGROUND AND PURPOSE: Although digital subtraction angiography (DSA) provides excellent visualization of the intracranial vasculature, it has several limitations. (arizona.edu)
- He went on to refine and optimize DSA to provide virtually real-time visualization of vascular structures without obstructions, revolutionizing angiography with a safer and more effective technology that is now found in practically every medical center. (nxtbook.com)
Pulmonary1
- Digital subtraction pulmonary angiogram shows splaying of the arterial branches of the right upper lobe and relative oligemia, which are consistent with emphysema (same patient as in the previous image). (medscape.com)
Artery1
- A-5: Digital subtraction angiogram obtained during balloon angioplasty of a stenotic artery. (medscape.com)
Technique4
- Subtraction angiography was first described in 1935 and in English sources in 1962 as a manual technique. (wikipedia.org)
- This subtraction technique allows extraction of a high-intensity signal from the superimposed background information. (ctsicn.org)
- Incorporating a hand-made, custom-designed digital image processor, Mistretta introduced his DSA technique. (nxtbook.com)
- Digital subtraction angiography (DSA) is a technique that reduces artifacts by subtracting densities created by the overlying bony skull. (aao.org)
Examination3
- With Philips Digital Subtraction Angiography (DSA) automatic examination pre-sets support a smooth and efficient workflow in angiography examinations. (philips.co.in)
- Angiography may take less than an hour or several hours, depending on the area of the body being evaluated and the type of the examination or procedures being done. (msdmanuals.com)
- Digital subtraction angiography, examination of upper limb or limbs-1 to 3 data acquisition runs (R) (Anaes. (health.gov.au)
Conventional1
- CT angiography (CTA) has been demonstrated to be an accurate and cost-effective alternative to conventional angiography and MR angiography in a variety of clinical settings. (ajnr.org)
Diagnostic1
- The pioneering accomplishments and vision of Charles A. Mistretta in developing digital subtraction angiography (DSA), timeresolved magnet resonance angiography (MRA), and accelerated imaging algorithms have transformed diagnostic radiology. (nxtbook.com)
Arterial1
- Digital subtraction angiography (DSA) of the spinal cord was performed in 6 patients using selective intra-arterial injections of contrast material. (mssm.edu)
Descriptor1
- Angiography, Digital Subtraction" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (ctsicn.org)
Scan2
- Bone-subtraction CTA (BSCTA), using a (low-dose) nonenhanced scan to create a bone model, which then is subtracted from the CTA data, 10 - 13 has proved to be a robust method, which can be fully automated, requiring no user interaction. (ajnr.org)
- Acquisition of two scans, one with injected contrast agent and a mask scan without contrast agent, 3D digital subtraction angiography images (3D DSA) can be computed. (uni-erlangen.de)
Algorithms1
- Bone-subtraction algorithms with motion compensation provided higher image-quality scores than pure rigid registration methods, especially in cases with complex motion. (ajnr.org)
Vascular structures1
- The use of digital subtraction technology has enhanced the ability to visualize vascular structures with smaller amounts of contrast dye. (aao.org)
Angiogram1
- Left lower extremity angiogram was then performed using digital subtraction followed by bolus chase. (aapc.com)
Assessment1
- Subtraction quality for the assessment of different vascular segments was evaluated by 2 examiners in a blinded fashion. (ajnr.org)
Methods1
- Digital subtraction angiography (DSA) is still considered the gold standard among the currently used imaging methods for the diagnosis of an intracranial aneurysm. (hindawi.com)
Procedure2
- Before the angiography procedure, people are usually asked to refrain from eating and drinking for 12 hours. (msdmanuals.com)
- Before angiography, people are often given a sedative intravenously to help them relax and remain calm, but they remain conscious during the procedure. (msdmanuals.com)
Diagnosis2
- The cost-effectiveness of digital subtraction angiography in the diagnosis of cerebrovascular disease (PDF). (wikipedia.org)
- Mistretta For contributions to network multi-user information theory and for wide-ranging impact on programmable circuit architectures For the development of imaging instrumentation and techniques that have transformed the diagnosis and treatment of vascular disease Abbas El Gamal's lasting contributions to information theory, wireless networks, field programmable gate arrays (FPGAs), and digital imaging have immensely impacted a wide variety of information technology applications critical in today's society. (nxtbook.com)
Aneurysm1
- The aneurysms size, site of location and aneurysm multiplicity was assessed by three-dimensional rotational digital subtraction angiography (DSA). (banglajol.info)
Images2
- Angiography can provide still images or motion pictures (called cineangiography). (msdmanuals.com)
- Mistretta recognized the importance that electronic subtraction in imaging could play in providing vascular images that were free of obscuring anatomy. (nxtbook.com)
Interpretation1
- Bone-subtraction techniques have been shown to enhance CT angiography (CTA) interpretation, but motion can lead to incomplete bone removal. (ajnr.org)
Imaging1
- Digital subtraction angiography is considered the imaging method of choice. (hindawi.com)
Equipment1
- The QUART DSA phantom is designed for maximum precision in QA/QC of Digital Subtraction Angiography equipment. (rothband.com)
Abdominal1
- He had right upper quadrant abdominal tenderness and digital clubbing. (cdc.gov)
Treatment1
- Is Distortion Correction Necessary for Digital Subtraction Angiography in the Gamma Knife Treatment of Intra-Cranial Arteriovenous Malformations? (karger.com)
Term1
- Hence the term "digital subtraction angiography. (wikipedia.org)
Data2
- The two independent 3D data sets (3D-bone and 3D-digital subtraction angiography [DSA]) are fused in a single 3D representation. (johnshopkins.edu)
- I mangel på vitenskapelige data antok man tidligere at det i hovedsak var nyrearteriene som var affisert, og hos en liten andel pasienter hals- og vertebralarteriene. (tidsskriftet.no)
Accurate1
- The published literature maintains that distortion correction of digital subtraction angiography is essential for accurate definition of the arteriovenous malformation (AVM) nidus when performing Gamma Knife radiosurgery. (karger.com)
Shows1
- This graph shows the total number of publications written about "Angiography, Digital Subtraction" by people in this website by year, and whether "Angiography, Digital Subtraction" was a major or minor topic of these publications. (ctsicn.org)
Technology1
- Digital technology made DSA practical starting in the 1970s. (wikipedia.org)
Patient3
- A limitation of this method is that complex patient motion between the 2 scans can confound the subtraction process. (ajnr.org)
- The patient population was composed of 2 groups: 1) patients with symptomatic atherosclerotic disease who underwent an additional low-dose nonenhanced CT scanning (NECT) for subtraction purposes and 2) patients with cancer of the oral cavity/oropharynx who required CTA for surgical planning of reconstructive surgery. (ajnr.org)
- The patient underwent angiography. (medscape.com)
People1
- Below are the most recent publications written about "Angiography, Digital Subtraction" by people in Profiles. (ctsicn.org)