Initial experience with single-source dual-energy CT abdominal angiography and comparison with single-energy CT angiography: image quality, enhancement, diagnosis and radiation dose

Objectives To assess image quality of virtual monochromatic spectral (VMS) images, compared to single-energy (SE) CT, and to evaluate the feasibility of material density imaging in abdominal aortic disease. Methods In this retrospective study, single-source (ss) dual-energy (DE) CT of the aorto-ilia...

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Bibliographic Details
Published in:European radiology 2013-02, Vol.23 (2), p.351-359
Main Authors: Pinho, Daniella F., Kulkarni, Naveen M., Krishnaraj, Arun, Kalva, Sanjeeva P., Sahani, Dushyant V.
Format: Article
Language:English
Subjects:
Abdomen
Abdominal Cavity - diagnostic imaging
Aged
Aged, 80 and over
Aneurysm, Ruptured - diagnostic imaging
Aneurysm, Ruptured - surgery
Aneurysms
Angiography - methods
Aortic Aneurysm, Abdominal - diagnostic imaging
Aortic Aneurysm, Abdominal - surgery
Cohort Studies
Computed Tomography
Contrast agents
Contrast Media
Coronary vessels
Databases, Factual
Diagnostic Radiology
Energy
Female
Humans
Imaging
Internal Medicine
Interventional Radiology
Iodine
Male
Medical imaging
Medicine
Medicine & Public Health
Middle Aged
Neuroradiology
Patients
Quality Control
Radiation
Radiation Dosage
Radiographic Image Enhancement - methods
Radiography, Dual-Energy Scanned Projection - methods
Radiology
Reproducibility of Results
Retrospective Studies
Sensitivity and Specificity
Sensors
Tomography
Tomography, X-Ray Computed - methods
Ultrasound
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Summary:Objectives To assess image quality of virtual monochromatic spectral (VMS) images, compared to single-energy (SE) CT, and to evaluate the feasibility of material density imaging in abdominal aortic disease. Methods In this retrospective study, single-source (ss) dual-energy (DE) CT of the aorto-iliac system in 35 patients (32 male, mean age 76.5 years) was compared to SE-CT. By post-processing the data from ssDECT, VMS images at different energies and material density water (WD) images were generated. The image quality parameters were rated on 5-point scales. The aorto-iliac attenuation and contrast-to-noise ratio (CNR) were recorded. Quality of WD images was compared to true unenhanced (TNE) images. Radiation dose was recorded and statistical analysis was performed. Results Image quality and noise were better at 70 keV ( P  
ISSN:0938-7994
1432-1084
DOI:10.1007/s00330-012-2624-x