Deep vein thrombosis CT: Difference between revisions

	Deep Vein Thrombosis Microchapters
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Revision as of 18:41, 15 July 2014

Editor(s)-In-Chief: The APEX Trial Investigators, C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Cafer Zorkun, M.D., Ph.D. [2] ; Kashish Goel, M.D.; Assistant Editor(s)-In-Chief: Justine Cadet

Overview

CT scan is not a routine test for the diagnosis of deep vein thrombosis.

CT

Uses

CT scan is preferred over contrast venography as there is no need to cannulate the foot veins.

CT scan might be used for diagnosis of DVT when compression ultrasonography is impractical in cases of excessive swelling, edema, or a leg cast.

Limitations

CT scan is not done routinely in clinical settings because of certain limitations:

Side effects of IV contrast administration
Expensive modality

Routine use is not recommended. (Class I - Level of evidence B)

Examples

CT images: DVT at left leg

References

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@@ Line 8: / Line 8: @@
 {{Deep vein thrombosis}}
 ==Overview==
-Venous thrombosis in the proximal deep veins is responsible for more than 90% of the [[pulmonary embolism]]s. Some of the investigators have suggested combined use of CT PE protocol and CT scan venography in cases of suspected [[DVT]] and [[PE]].<ref name="pmid15051664">{{cite journal| author=Kanne JP, Lalani TA| title=Role of computed tomography and magnetic resonance imaging for deep venous thrombosis and pulmonary embolism. | journal=Circulation | year= 2004 | volume= 109 | issue= 12 Suppl 1 | pages= I15-21 | pmid=15051664 | doi=10.1161/01.CIR.0000122871.86662.72 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=15051664  }} </ref>
+[[CT scan]] is not a routine test for the diagnosis of [[deep vein thrombosis]].
 ==CT==
 ===Uses===
-It is preferred over contrast [[Deep vein thrombosis venography|venography]] as there is no need to cannulate the foot veins. In the following setting:
+[[CT scan]] is preferred over contrast [[Deep vein thrombosis venography|venography]] as there is no need to cannulate the foot veins.
-* [[Deep vein thrombosis ultrasound|Compression ultrasonography]] can be impractical in cases of excessive [[swelling]], [[edema]], or a leg cast.
+[[CT scan]] might be used for diagnosis of [[DVT]] when [[Deep vein thrombosis ultrasound|compression ultrasonography]] is impractical in cases of excessive [[swelling]], [[edema]], or a leg cast.
 ===Limitations===
-It is not done routinely in clinical settings because of certain limitations:
+[[CT scan]] is not done routinely in clinical settings because of certain limitations:
 * Side effects of IV contrast administration
 * Expensive modality