Stephen J. Schueler, M.D.

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PE Helical CT Scan

A helical CT scan can detect a blockage in a pulmonary artery, caused by a pulmonary embolism. Helical CT offers the advantage of being less invasive than other diagnostic tests for pulmonary embolism.

During CT pulmonary angiography, an x-ray dye is injected into the bloodstream before the CT scan is performed. The dye outlines the blood flow through the arteries. The addition of dye slightly increases the risk, but can dramatically increase the accuracy in detecting pulmonary embolism.

Continue to PE Pulmonary Angiogram

Last Updated: Jul 8, 2009 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed PE References
  1. Fedullo PF, Tapson VF. Clinical practice. The evaluation of suspected pulmonary embolism. N Engl J Med. 2003 Sep 25;349(13):1247-56. [14507950]
  2. Kruip MJ, Leclercq MG, van der Heul C, Prins MH, Buller HR. Diagnostic strategies for excluding pulmonary embolism in clinical outcome studies. A systematic review. Ann Intern Med. 2003 Jun 17;138(12):941-51. [12809450]
  3. Roberts KE, Hamele-Bena D, Saqi A, Stein CA, Cole RP. Pulmonary tumor embolism: a review of the literature. Am J Med. 2003 Aug 15;115(3):228-32. [12935829]
  4. Roy PM, Colombet I, Durieux P, Chatellier G, Sors H, Meyer G. Systematic review and meta-analysis of strategies for the diagnosis of suspected pulmonary embolism. BMJ. 2005 Jul 30;331(7511):259. [16052017]
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