235:
142:
36:
218:, images are acquired by exposing an area of interest with time-controlled x-rays while injecting a contrast medium into the blood vessels. The image obtained includes the blood vessels, together with all overlying and underlying structures. The images are useful for determining anatomical position and variations, but unhelpful for visualizing blood vessels accurately.
230:
the mask image) The radiologist controls how much contrast media is injected and for how long. Smaller structures require less contrast to fill the vessel than others. Images produced appear with a very pale grey background, which produces a high contrast to the blood vessels, which appear a very
221:
In order to remove the distracting structures to see the vessels better, first a mask image is acquired. The mask image is simply an image of the same area before the contrast is administered. The radiological equipment used to capture this is usually an
272:
into the body. Tissues and blood vessels on the first image are digitally subtracted from the second image, leaving a clear picture of the artery which can then be studied independently and in isolation from the rest of the body.
226:, which then keeps producing images of the same area at a set rate (1 to 7.5 frames per second). Each subsequent image gets the original "mask" image subtracted out. (Mathematically, the incoming image is
192:
technique used in interventional radiology to clearly visualize blood vessels in a bony or dense soft tissue environment. Images are produced using contrast medium by subtracting a "pre-contrast image" or
684:
D'Alotto C, Pelz DM, Rankin RN (September 1985). "A comparison of angiography, intravenous digital subtraction angiography and duplex ultrasound in the diagnosis of carotid artery atherosclerosis".
201:
angiography. Subtraction angiography was first described in 1935 and in
English sources in 1962 as a manual technique. Digital technology made DSA practical starting in the 1970s.
741:
581:
Rao, Qasim Ali; Newhouse, Jeffrey H. (May 2006). "Risk of
Nephropathy after Intravenous Administration of Contrast Material: A Critical Literature Analysis".
608:
Eddy AC, Nance DR, Goldman MA, et al. (May 1990). "Rapid diagnosis of thoracic aortic transection using intravenous digital subtraction angiography".
53:
17:
100:
1025:
72:
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DSA is primarily used to image blood vessels. It is useful in the diagnosis and treatment of arterial and venous occlusions, including
79:
452:
86:
551:
Menken, Matthew; DeFriese, Gordon H; Oliver, Thomas R; Litt, Irwin (1985). "Introduction to
Digital Subtraction Angiography".
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742:"Comparison of ultrasonography, CT angiography, and digital subtraction angiography in severe carotid stenoses"
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288:. However, IV-DSA has been used successfully to study the vessels of the brain and heart and has helped detect
197:
from subsequent images, once the contrast medium has been introduced into a structure. Hence the term "digital
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93:
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355:(CTA), which can produce 3D images through a test which is less invasive and stressful for the patient, and
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405:
992:
340:
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Jeans, W. D.; Stout, Paul (March 1990). "The development and use of digital subtraction angiography".
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The cost-effectiveness of digital subtraction angiography in the diagnosis of cerebrovascular disease
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560:. Washington D.C.: Office of Technology Assessment, U.S. Government Printing Office. p. 15.
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296:. It also helps detect and diagnose lesions in the carotid arteries, a potential cause of
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Some limited studies have indicated that IV-DSA is not suitable for patients with
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428:"Digital subtraction angiography | Radiology Reference Article | Radiopaedia.org"
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IV-DSA has also been useful in assessing patients prior to surgery and after
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R. Herzig; S. Burval; B. Krupka; I. Vlachova; K. Urbanek; J. Mares (2004).
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DSA is done less routinely in imaging departments. It is being replaced by
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818:"Magnetic resonance angiography: current status and future directions"
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Hartung, Michael P; Grist, Thomas M; François, Christopher J (2011).
529:
516:
Hanafee, William; Stout, Paul (October 1962). "Subtraction
Technic".
335:(DSA is the gold standard investigation for renal artery stenosis);
35:
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because the dye load is significantly higher than that used in
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Zwiebel WJ, Strother CM, Austin CW, Sackett JF (1 July 1985).
242:
360:
258:
645:"Comparison of ultrasound and IV-DSA for carotid evaluation"
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27:
Method for delineating blood vessels using contrast medium
871:
Anagnostakos, Nicholas Peter; Tortora, Gerard J. (1990).
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815:
60:. Unsourced material may be challenged and removed.
872:
710:
1395:
607:
257:IV-DSA is a computer technique that compares an
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261:image of a region of the body before and after
1019:
909:
254:which was first developed in the late 1970s.
822:Journal of Cardiovascular Magnetic Resonance
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580:
248:Intravenous digital subtraction angiography
243:Intravenous digital subtraction angiography
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120:Learn how and when to remove this message
795:Diagnostic and Interventional Cardiology
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450:
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1007:
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711:Sam, Amir H.; James T.H. Teo (2010).
471:
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875:Principles of Anatomy and Physiology
146:Example of iodine-based contrast in
58:adding citations to reliable sources
29:
1224:Extracorporeal membrane oxygenation
879:. San Francisco: Harper & Row.
457:. Oxford: Oxford University Press.
292:obstruction and to map patterns of
24:
1219:Isolated organ perfusion technique
864:
797:. Scranton Gillette Communications
25:
1415:
425:
69:"Digital subtraction angiography"
761:10.1111/j.1468-1331.2004.00878.x
483:The British Journal of Radiology
34:
18:Digital Substraction Angiography
1282:Digital subtraction angiography
983:Digital subtraction angiography
973:Computed tomography angiography
923:
809:
782:
704:
385:Computed tomography angiography
353:computed tomography angiography
314:
182:Digital subtraction angiography
135:Digital subtraction angiography
45:needs additional citations for
1307:Magnetic resonance angiography
978:Magnetic resonance angiography
789:Newton, Carter (11 May 2010).
677:
636:
601:
574:
544:
509:
444:
419:
357:magnetic resonance angiography
305:coronary artery bypass surgery
13:
1:
1378:Ankle–brachial pressure index
749:European Journal of Neurology
622:10.1016/S0002-9610(05)81255-3
412:
346:
1188:Endovascular aneurysm repair
495:10.1259/0007-1285-63-747-161
406:Digital variance angiography
268:based dye has been injected
204:
7:
373:
341:arteriovenous malformations
10:
1420:
993:Carbon dioxide angiography
454:Concise Medical Dictionary
451:Martin, Elizabeth (2015).
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1272:
1263:
1201:
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1107:
1041:
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595:10.1148/radiol.2392050413
396:Peripheral artery disease
168:
154:
139:
134:
1404:Projectional radiography
1348:Intravascular ultrasound
1302:Radionuclide angiography
1353:Carotid ultrasonography
1297:Fluorescein angiography
988:Fluorescein angiography
943:Cardiac catheterization
835:10.1186/1532-429X-13-19
791:"Comparing CTA and MRA"
662:10.1161/01.STR.16.4.633
401:X-ray image intensifier
321:carotid artery stenosis
238:Neuro Coiling Procedure
224:X-ray image intensifier
1332:Impedance phlebography
1209:Cardiopulmonary bypass
1117:Ambulatory phlebectomy
1085:Carotid endarterectomy
963:CT pulmonary angiogram
250:(IV-DSA) is a form of
239:
958:Pulmonary angiography
333:renal artery stenosis
237:
1287:Cerebral angiography
1048:Endovascular surgery
953:Cerebral angiography
359:(MRA), which avoids
329:acute limb ischaemia
148:cerebral angiography
54:improve this article
1246:Seldinger technique
1241:First rib resection
1193:Open aortic surgery
325:pulmonary embolisms
294:cerebral blood flow
210:DSA and fluoroscopy
770:on 5 December 2013
686:J Can Assoc Radiol
337:cerebral aneurysms
240:
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1390:
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1258:
1236:Revascularization
1001:
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16:(Redirected from
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1366:Other diagnostic
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1097:Carotid stenting
1057:Arterial disease
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1035:Vascular surgery
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1021:
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948:Microangiography
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52:Please help
47:verification
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1327:Portography
1292:Aortography
1274:Angiography
1160:Arteriotomy
1075:Atherectomy
1070:Angioplasty
938:Angiography
926:Angiography
610:Am. J. Surg
432:Radiopaedia
380:Angiography
365:nephrotoxic
252:angiography
231:dark grey.
216:angiography
199:subtraction
190:fluoroscopy
1373:Angioscopy
1341:Ultrasound
1319:Venography
1179:dissection
1165:Phlebotomy
437:2021-09-29
413:References
347:The future
309:transplant
263:radiopaque
228:divided by
80:newspapers
828:(1): 19.
801:6 January
583:Radiology
518:Radiology
307:and some
205:Procedure
110:June 2013
1398:Category
1142:Arterial
1092:Stenting
1043:Vascular
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538:13952459
374:See also
278:diabetes
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774:26 June
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363:and
339:and
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156:MeSH
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830:doi
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