Richard Reaven MD, Presenter: Nothing to Disclose

Eliot L. Siegel MD, Abstract Co-Author: Research grant, General Electric Company Speakers Bureau, Siemens AG Board of Directors, Carestream Health, Inc Research Grant, XYBIX Systems, Inc Research Grant, Steelcase, Inc Research Grant, Anthro Corp Research Grant, RedRick Technologies Inc Research Grant, Evolved Technologies Corporation Research Grant, Barco nv Research Grant, Intel Corporation Research Grant, Dell Inc Research Grant, Herman Miller, Inc Research Grant, Virtual Radiology Research Grant, Anatomical Travelogue, Inc Medical Advisory Board, Fovia, Inc Medical Advisory Board, Vital Images Medical Advisory Board, McKesson Corporation Medical Advisory Board, Carestream Health, Inc Medical Advisory Board, Bayer AG Research, TeraRecon, Inc Medical Advisory Board, Bracco Group Researcher, Bracco Group Medical Advisory Board, Merge Healthcare Incorporated Medical Advisory Board, Microsoft Corporation Researcher, Microsoft Corporation

The purpose of our exhibit is to describe advantages and disadvantages of the routine clinical use of a 1024 x 1024 matrix for CT.

We will first explain the historical utilization of the 1024 x 1024 matrix for CT images, the paucity of papers evaluating this matrix size and how limitations in storage capacity and image reconstruction speed originally limited its widespread use. We will then highlight benefits of 1024 x 1024 matrix CT images, including improved spatial resolution and more precise lesion measurement as well as disadvantages such as increased image noise, and the need for increased image processing, network speed and storage. We will demonstrate how the benefits outweigh the disadvantages by providing specific use cases that support its widespread adoption in clinical practice. We will also describe the use of iterative reconstruction and its impact on reduction of image noise in 1024 x 1024 CT images.

Routine reconstruction using a 1024 x 1024 matrix CT can be practically achieved using available CT reconstruction and display technology and should be strongly considered to replace the 512 x 512 matrix in widespread use. Potential benefits for patient care include improved measurement accuracy and image quality without a substantial increase in image noise or dose.

Reaven, R, Siegel, E, More Pixels Please: The Pros and Cons of Routine 1024 x 1024 Matrix CT Reconstruction.  Radiological Society of North America 2012 Scientific Assembly and Annual Meeting, November 25 - November 30, 2012 ,Chicago IL. http://archive.rsna.org/2012/12024654.html