Frederick Ethan Weiss 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

Jean Jeudy MD, Abstract Co-Author: Nothing to Disclose

Samir Abboud BS, Abstract Co-Author: Nothing to Disclose

Zhitong Yang PhD, Abstract Co-Author: Nothing to Disclose

We conclude the ways in which the latest generation iPad has superior display characteristics in comparison to the previous generation.

With the introduction of the "new" iPad into the market, the major new feature highlighted by Apple is the increase in image quality. While previous studies on earlier generations of the iPad have shown that mobile devices hold promise for use as secondary display, a current review of the literature reveals no formal evaluation of display characteristics. The characteristics of the display as published by the manufacturer are limited. The purpose of our study is to characterize the latest generation iPad display in an objective and quantitative manner consistent with recommendations set forth by the ACR and AAPM and compare this with a previous generation iPad and a “diagnostic quality” monitor.

The gap between tablet consumer displays and the requirements established for medical displays is continuing to shrink. We aim to show that it is reasonable to use even mobile displays for secondary display.

The display characteristics identified by ACR and AAPM for the evaluation of a device to be used in the radiological setting include minimum and maximum luminance, luminance uniformity, displayed resolution, geometric distortions, gray scale display function, noise, MTF, and light reflection. We followed the protocols in the AAPM report TG18 to evaluate three displays: a previous generation iPad, a current generation iPad with advertised improved resolution, and a diagnostic quality monitor.We first determined basic characteristics of the test displays such as min and max luminance, luminance ratio, and luminance uniformity using a pocket luminance meter and high-end consumer grade digital camera. Geometric distortions and the DICOM GSDF were measured using published test patterns. Reflection characteristics were evaluated visually and quantitatively using a telescoped luminance meter.ACR, SMPTE and AAPM test patterns are used to visually determine the display resolution. MTF was quantified using a digital camera.

Weiss, F, Siegel, E, Jeudy, J, Abboud, S, Yang, Z, Comparing Apples to Apples: Quantitative Evaluation of the “Retina Display” New iPad, iPad2, and a “Diagnostic Monitor”.  Radiological Society of North America 2012 Scientific Assembly and Annual Meeting, November 25 - November 30, 2012 ,Chicago IL. http://archive.rsna.org/2012/12030497.html