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Dual-Energy Multidetector-Row Computed Tomography of the Hepatic Arterial System: Optimization of Energy and Material-Specific Reconstruction Techniques.

Publication ,  Journal Article
Marin, D; Caywood, DT; Mileto, A; Reiner, CS; Seaman, DM; Patel, BN; Boll, DT; Nelson, RC
Published in: J Comput Assist Tomogr
2015

PURPOSE: To investigate the optimal dual-energy reconstruction technique for the visualization of the hepatic arterial system during dual-energy multidetector computed tomographic (MDCT) angiography of the liver. MATERIALS AND METHODS: Twenty-nine nonconsecutive patients underwent dual-energy MDCT angiography of the liver. Synthesized monochromatic (40, 50, 60, and 80 keV) and iodine density data sets were reconstructed. Aortic attenuation, noise, and contrast-to-noise ratio (CNR) were measured. In addition, volume-rendered images were generated and qualitatively assessed by 2 independent readers, blinded to technique. The impact of body size on the readers' scores was also assessed. RESULTS: Aortic attenuation, noise, and CNR increased progressively with decreasing keV and were significantly higher between 40 and 60 keV (P < 0.001). There was a significant improvement of readers' visualization of arterial anatomy at lower monochromatic energies (P < 0.001). Iodine density images yielded significantly higher CNR compared with all monochromatic data sets (P < 0.001). However, iodine density images were scored nondiagnostic by the 2 readers. CONCLUSIONS: Synthesized monochromatic images between 40 and 60 keV maximize the magnitude of arterial enhancement and improve visualization of hepatic arterial anatomy at dual-energy MDCT angiography of the liver. Larger body sizes may counteract the benefits of using lower monochromatic energies.

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Published In

J Comput Assist Tomogr

DOI

EISSN

1532-3145

Publication Date

2015

Volume

39

Issue

5

Start / End Page

721 / 729

Location

United States

Related Subject Headings

  • Signal-To-Noise Ratio
  • Sensitivity and Specificity
  • Retrospective Studies
  • Reproducibility of Results
  • Radiography, Dual-Energy Scanned Projection
  • Radiographic Image Interpretation, Computer-Assisted
  • Radiographic Image Enhancement
  • Nuclear Medicine & Medical Imaging
  • Multidetector Computed Tomography
  • Middle Aged
 

Citation

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Marin, D., Caywood, D. T., Mileto, A., Reiner, C. S., Seaman, D. M., Patel, B. N., … Nelson, R. C. (2015). Dual-Energy Multidetector-Row Computed Tomography of the Hepatic Arterial System: Optimization of Energy and Material-Specific Reconstruction Techniques. J Comput Assist Tomogr, 39(5), 721–729. https://doi.org/10.1097/RCT.0000000000000259
Marin, Daniele, Devin T. Caywood, Achille Mileto, Caecilia S. Reiner, Danielle M. Seaman, Bhavik N. Patel, Daniel T. Boll, and Rendon C. Nelson. “Dual-Energy Multidetector-Row Computed Tomography of the Hepatic Arterial System: Optimization of Energy and Material-Specific Reconstruction Techniques.J Comput Assist Tomogr 39, no. 5 (2015): 721–29. https://doi.org/10.1097/RCT.0000000000000259.
Marin D, Caywood DT, Mileto A, Reiner CS, Seaman DM, Patel BN, et al. Dual-Energy Multidetector-Row Computed Tomography of the Hepatic Arterial System: Optimization of Energy and Material-Specific Reconstruction Techniques. J Comput Assist Tomogr. 2015;39(5):721–9.
Marin, Daniele, et al. “Dual-Energy Multidetector-Row Computed Tomography of the Hepatic Arterial System: Optimization of Energy and Material-Specific Reconstruction Techniques.J Comput Assist Tomogr, vol. 39, no. 5, 2015, pp. 721–29. Pubmed, doi:10.1097/RCT.0000000000000259.
Marin D, Caywood DT, Mileto A, Reiner CS, Seaman DM, Patel BN, Boll DT, Nelson RC. Dual-Energy Multidetector-Row Computed Tomography of the Hepatic Arterial System: Optimization of Energy and Material-Specific Reconstruction Techniques. J Comput Assist Tomogr. 2015;39(5):721–729.

Published In

J Comput Assist Tomogr

DOI

EISSN

1532-3145

Publication Date

2015

Volume

39

Issue

5

Start / End Page

721 / 729

Location

United States

Related Subject Headings

  • Signal-To-Noise Ratio
  • Sensitivity and Specificity
  • Retrospective Studies
  • Reproducibility of Results
  • Radiography, Dual-Energy Scanned Projection
  • Radiographic Image Interpretation, Computer-Assisted
  • Radiographic Image Enhancement
  • Nuclear Medicine & Medical Imaging
  • Multidetector Computed Tomography
  • Middle Aged