CT of pulmonary embolism
Revision as of 11:41, 26 September 2018 by Mikael Häggström (talk | contribs)
Author:
Mikael Häggström [notes 1]
Contents
Planning
- Contrast
CT of pulmonary embolism needs to be done as a CT angiography in pulmonary arterial phase.
The standard amount of contrast is generally 30 to 40g of iodine (such as 20-30 cc of 370 mg/ml of iodine).[1] In case of low renal function, dual energy CTA (such as 90/150SnkVp) is feasible even at iodine doses of 6g (such as 15 ml of 370 mg/ml of iodine).[2]
- For general notes on contrast dosage, see Contrast CT
Severity
Severity of pulmonary embolism is determined by the level of the embolism along the pulmonary arterial tree, as well as how many such vessels are involved, and how much of the area is covered in each vessel.
- Computed tomograph of pulmonary vessels.jpg
Pulmonary arterial tree levels
- SegandSubsegPE.png
Segmental and subsegmental pulmonary emboli on both sides
Notes
- ↑ For a full list of contributors, see article history. Creators of images are attributed at the image description pages, seen by clicking on the images. See Radlines:Authorship for details.
References
- ↑ Janet Cochrane Miller, D. Phil., Author. Raul N. Uppot, M.D., Editor. "Dual Energy CT Imaging for Suspected Pulmonary Embolism Using a Lower Dose of Contrast Agent ". Radiology Rounds, by Massachusetts General Hospital, Department of Radiology 13 (7). Archived from the original. .
- ↑ Leroyer, Christophe; Meier, Andreas; Higashigaito, Kai; Martini, Katharina; Wurnig, Moritz; Seifert, Burkhardt; Keller, Dagmar; Frauenfelder, Thomas; et al. (2016). "Dual Energy CT Pulmonary Angiography with 6g Iodine—A Propensity Score-Matched Study ". PLOS ONE 11 (12): e0167214. doi:. ISSN 1932-6203.
