Access the full text.
Sign up today, get DeepDyve free for 14 days.
References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.
Image performance of a cone beam O-arm system with the use of a Varian flat panel detector (PaxScan 4030CB) was evaluated. Modulation Transfer Function (MTF), Noise Power Spectrum (NPS), and tube output characteristics were measured. Image quality measurements were performed with a CATPHAN 424 phantom using a 120 kVp beam filtered with 1 mm Al and 0.1 mm Cu and three preset protocols at different exposure levels. The CPT445 Module was used to measure MTF. Water phantom images were used to calculate NPS. Then the NPS was normalized by dividing the square of the mean signal. The Photon fluence at each exposure (q) was estimated using the SpekCalc. The MTF indicates that the reconstruction filter of the O-arm is overenhancing, meaning that it yields values greater than unity. The system has a 10% MTF at 0.45 mm. The NPS shows the low frequency structured noise. The evaluation of image performance of the O-arm imaging system helps its future improvements and clinical applications.
Journal of X-Ray Science and Technology – IOS Press
Published: Jan 1, 2013
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.