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The effect of left-sided versus right-sided contrast infusion on attenuation of the main pulmonary artery when performing computed tomography angiograms of the chest.

Publication ,  Journal Article
Grimm, LJ; Cornfeld, D; Mojibian, HR
Published in: J Comput Assist Tomogr
January 2010

OBJECTIVE: This study assesses if the arm of contrast infusion influences attenuation of the main pulmonary artery in computed tomography (CT) angiograms to evaluate for pulmonary emboli. METHODS: Four hundred seven consecutive CT angiograms performed to exclude pulmonary emboli were reviewed. Patient characteristics, study details, and interpretation results were collected. After exclusion criteria, 100 studies from each scanner (4, 16, and 64 slice) remained. A reader, blinded to injection side, measured the attenuation of the main pulmonary artery. RESULTS: The average attenuation in the main pulmonary artery was similar if infused through the right (275.4 HU) or left (275.0 HU) arm when controlling for confounders with a multiple regression analysis (P = 0.82). There was no statistical difference (P > 0.05) in the number of scans with attenuation less than 250 (45.9% right, 42.9% left), 200 (25.3% right, 29.2% left), or 150 HU (11.6% right, 12.3% left) and interpreted as indeterminate (1.4% right, 3.9% left) or nondiagnostic (2.7% right, 2.6% left). CONCLUSIONS: Main pulmonary artery attenuation is independent of the arm of infusion when evaluating mean attenuation, attenuation beneath 250, 200, or 150 HU, or indeterminate or nondiagnostic interpretations for patients undergoing CT angiograms of the chest to rule out pulmonary emboli.

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Published In

J Comput Assist Tomogr

DOI

EISSN

1532-3145

Publication Date

January 2010

Volume

34

Issue

1

Start / End Page

52 / 57

Location

United States

Related Subject Headings

  • Tomography, X-Ray Computed
  • Retrospective Studies
  • Radiographic Image Enhancement
  • Pulmonary Artery
  • Nuclear Medicine & Medical Imaging
  • Middle Aged
  • Male
  • Iohexol
  • Infusions, Intravenous
  • Humans
 

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Grimm, L. J., Cornfeld, D., & Mojibian, H. R. (2010). The effect of left-sided versus right-sided contrast infusion on attenuation of the main pulmonary artery when performing computed tomography angiograms of the chest. J Comput Assist Tomogr, 34(1), 52–57. https://doi.org/10.1097/RCT.0b013e3181ad2cfe
Grimm, Lars J., Daniel Cornfeld, and Hamid R. Mojibian. “The effect of left-sided versus right-sided contrast infusion on attenuation of the main pulmonary artery when performing computed tomography angiograms of the chest.J Comput Assist Tomogr 34, no. 1 (January 2010): 52–57. https://doi.org/10.1097/RCT.0b013e3181ad2cfe.
Grimm, Lars J., et al. “The effect of left-sided versus right-sided contrast infusion on attenuation of the main pulmonary artery when performing computed tomography angiograms of the chest.J Comput Assist Tomogr, vol. 34, no. 1, Jan. 2010, pp. 52–57. Pubmed, doi:10.1097/RCT.0b013e3181ad2cfe.

Published In

J Comput Assist Tomogr

DOI

EISSN

1532-3145

Publication Date

January 2010

Volume

34

Issue

1

Start / End Page

52 / 57

Location

United States

Related Subject Headings

  • Tomography, X-Ray Computed
  • Retrospective Studies
  • Radiographic Image Enhancement
  • Pulmonary Artery
  • Nuclear Medicine & Medical Imaging
  • Middle Aged
  • Male
  • Iohexol
  • Infusions, Intravenous
  • Humans