AnalyzeDirect S Aldosari et al. Double low-dose computed tomography pulmonary angiography in the diagnosis of pulmonary embolism. Journal of Physics.
Publication Date
June 6, 2019
How Analyze was Used
“Original images in digital imaging and communications in medicine (DICOM) format were transferred to a workstation with Analyze 12.0 (AnalyzeDirect, Inc., Overland Park, KS, USA) of image post-processing and measurement. Quantitative assessment of image quality was determined by measuring signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) in the main pulmonary arteries. CT attenuation in the background was measured in the paravertebral muscle. A region of interest (ROI) (containing minimum 150 voxels) was placed in the pulmonary trunk with SNR and CNR calculated as follows: SNR=CT attenuation in pulmonary trunk/SD (image noise); CNR=(CT attenuation in pulmonary trunk-background CT attenuation)/SD (image noise). The standard deviation (SD) refers to the image noise measured in the pulmonary trunk.”
Keywords
Double low-dose computed tomography, Pulmonary angiography, Pulmonary embolism
Author Affiliation(s)
Curtin University, Perth, Australia
