Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2014 Nov 12;44(1):20140238. doi: 10.1259/dmfr.20140238

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2015 The Authors. Published by the British Institute of Radiology

PMC Copyright notice

Uniformity issues in CBCT, measured using a 160-mm homogeneous polymethyl methacrylate phantom. Each black circle shows the mean gray value inside it. Top: intrascan uniformity, showing differences in gray values between central and peripheral regions for a large-diameter (160 mm) CBCT scan. Bottom: interscan uniformity, showing differences between central and peripheral field of view positions for a small-diameter (50 mm) CBCT scan. The bottom two images are displayed using the same window/level settings. All images are to scale.