Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

Measurement of the spatial resolution of a clinical volumetric computed tomography scanner using a sphere phantom

[+] Author Affiliations
Michael M. Thornton

Robarts Research Institute (Canada)

Michael J. Flynn

Henry Ford Health System

Proc. SPIE 6142, Medical Imaging 2006: Physics of Medical Imaging, 61421Z (February 28, 2006); doi:10.1117/12.654969
Text Size: A A A
From Conference Volume 6142

  • Medical Imaging 2006: Physics of Medical Imaging
  • Michael J. Flynn; Jiang Hsieh
  • San Diego, CA | February 11, 2006

abstract

The rapid development of modern multi-slice computed tomography (MSCT) scanners has provided imaging systems with cone-beam geometry, sub-millimetre slice thickness, and gantry rotation speeds approaching 0.3 seconds per revolution. Clinical MSCT scanners routinely generate volume data sets yet the methods used to quantify spatial resolution remain relatively unchanged from those used to evaluate single slice scanners. In this paper, we describe a method for quantifying the spatial resolution of an MSCT scanner, with cone-beam, geometry using a sphere phantom. By scanning a Teflon sphere embedded in a uniform silicone cylinder, the plane spread function (PlSF) and modulation transfer function (MTF) may be determined. Furthermore, the spatial resolution in the axial and trans-axial directions may be independently quantified, as well as the effects of Azimuthal blur and spiral scanning. To illustrate the utility of the sphere method, the spatial resolution of two commercially available MSCT scanners was measured.

© (2006) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Michael M. Thornton and Michael J. Flynn
"Measurement of the spatial resolution of a clinical volumetric computed tomography scanner using a sphere phantom", Proc. SPIE 6142, Medical Imaging 2006: Physics of Medical Imaging, 61421Z (February 28, 2006); doi:10.1117/12.654969; http://dx.doi.org/10.1117/12.654969


Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).

Figures

Tables

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.