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Dynamic Computed Tomographic Pulmonary Angiography as a Problem-Solving Tool in Indeterminate Computed Tomographic Angiography for Pulmonary Embolism

Cox, Christian Warren MD; Chung, Jonathan H. MD; Lynch, David A. MD

Journal of Computer Assisted Tomography:
doi: 10.1097/RCT.0b013e31825f9925
Thoracic Imaging

Objective: Computed tomographic pulmonary angiography may be indeterminate in regions of slow arterial flow because of underlying lung disease. In this case, dynamic computed tomographic angiography of the pulmonary vasculature (dynamic CTPA) was used to confirm flow variation within the pulmonary arteries in regions of pulmonary fibrosis and excluded pulmonary embolism.

Conclusions: Dynamic CTPA successfully demonstrates flow variation within the pulmonary arteries and may be a useful adjunct to exclude pulmonary embolism in CTPA cases with questionable arterial filling defects.

Author Information

From the National Jewish Health, Denver CO.

Received for publication January 25, 2012; accepted May 15, 2012.

Reprints: Christian Warren Cox, MD, National Jewish Health, 1400 Jackson St, Denver CO 80206 (e-mail:

The authors declare no conflicts of interest.

© 2012 Lippincott Williams & Wilkins, Inc.