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CT arterial portography: causes of technical failure and variable liver enhancement.

Publication ,  Journal Article
Paulson, EK; Baker, ME; Hilleren, DJ; Jones, WP; Knelson, MH; Nadel, SN; Leder, RA; Meyers, WC
Published in: AJR Am J Roentgenol
October 1992

OBJECTIVE: We studied the causes of technical failure and enhancement variability encountered during CT arterial portography. MATERIALS AND METHODS: CT arterial portograms and digital arteriograms were obtained via the superior mesenteric artery before partial liver resection in 43 patients with malignant tumors. These studies were reviewed for causes of technical failure and variable enhancement. RESULTS: Eleven (26%) of 43 procedures were technical failures. Causes of failure included aortic injection after catheter dislodgement (four), dense hyperenhancement associated with laminar flow in the portal vein produced by rapid venous return from a selective injection into a proximal branch vessel of the superior mesenteric artery (two), premature scanning beginning at the iliac crest (two), reflux into a replaced right hepatic artery (one), hepatic arterial enhancement via the pancreaticoduodenal arcade (one), and portal hypertension (one). Of the 32 remaining studies, 28 showed areas of parenchymal hypoenhancement or hyperenhancement. Causes of variable enhancement included impaired portal vein perfusion from mass effect of the tumor, laminar flow in the portal vein, and focal fatty infiltration. CONCLUSION: Technical failures and enhancement variability are common in CT arterial portography. Factors leading to technical failure include catheter choice and position, portal hypertension, and operator error.

Duke Scholars

Published In

AJR Am J Roentgenol

DOI

ISSN

0361-803X

Publication Date

October 1992

Volume

159

Issue

4

Start / End Page

745 / 749

Location

United States

Related Subject Headings

  • Tomography, X-Ray Computed
  • Retrospective Studies
  • Radiographic Image Enhancement
  • Preoperative Care
  • Portography
  • Nuclear Medicine & Medical Imaging
  • Middle Aged
  • Male
  • Liver Neoplasms
  • Liver
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Paulson, E. K., Baker, M. E., Hilleren, D. J., Jones, W. P., Knelson, M. H., Nadel, S. N., … Meyers, W. C. (1992). CT arterial portography: causes of technical failure and variable liver enhancement. AJR Am J Roentgenol, 159(4), 745–749. https://doi.org/10.2214/ajr.159.4.1326885
Paulson, E. K., M. E. Baker, D. J. Hilleren, W. P. Jones, M. H. Knelson, S. N. Nadel, R. A. Leder, and W. C. Meyers. “CT arterial portography: causes of technical failure and variable liver enhancement.AJR Am J Roentgenol 159, no. 4 (October 1992): 745–49. https://doi.org/10.2214/ajr.159.4.1326885.
Paulson EK, Baker ME, Hilleren DJ, Jones WP, Knelson MH, Nadel SN, et al. CT arterial portography: causes of technical failure and variable liver enhancement. AJR Am J Roentgenol. 1992 Oct;159(4):745–9.
Paulson, E. K., et al. “CT arterial portography: causes of technical failure and variable liver enhancement.AJR Am J Roentgenol, vol. 159, no. 4, Oct. 1992, pp. 745–49. Pubmed, doi:10.2214/ajr.159.4.1326885.
Paulson EK, Baker ME, Hilleren DJ, Jones WP, Knelson MH, Nadel SN, Leder RA, Meyers WC. CT arterial portography: causes of technical failure and variable liver enhancement. AJR Am J Roentgenol. 1992 Oct;159(4):745–749.

Published In

AJR Am J Roentgenol

DOI

ISSN

0361-803X

Publication Date

October 1992

Volume

159

Issue

4

Start / End Page

745 / 749

Location

United States

Related Subject Headings

  • Tomography, X-Ray Computed
  • Retrospective Studies
  • Radiographic Image Enhancement
  • Preoperative Care
  • Portography
  • Nuclear Medicine & Medical Imaging
  • Middle Aged
  • Male
  • Liver Neoplasms
  • Liver