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DOI: 10.1148/rg.273065153
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GridCAD: Grid-based Computer-aided Detection System1

Tony C. Pan, MS, Metin N. Gurcan, PhD, Stephen A. Langella, MS, Scott W. Oster, MS, Shannon L. Hastings, MS, Ashish Sharma, PhD, Benjamin G. Rutt, MS, David W. Ervin, BA, Tahsin M. Kurc, PhD, Khan M. Siddiqui, MD, Joel H. Saltz, MD, PhD, and Eliot L. Siegel, MD

1 From the Department of Biomedical Informatics, Ohio State University, 3190 Graves Hall, 333 W 10th Ave, Columbus, OH 43210 (T.C.P., M.N.G., S.A.L., S.W.O., S.L.H., A.S., B.G.R., D.W.E., T.M.K., J.H.S.); VA Maryland Health Care System, Baltimore, Md (K.M.S., E.L.S.); and University of Maryland School of Medicine, Baltimore, Md (E.L.S.). Presented as an infoRAD exhibit at the 2005 RSNA Annual Meeting. Received August 17, 2006; revision requested September 22 and received November 8; accepted December 20. Supported in part by the National Cancer Institute, the National Science Foundation (CNS-0509326, CNS-0403342, ANI-0330612), the National Institutes of Health (NIBIB BISTI P20EB000591), and the Ohio Board of Regents (BRTTC BRTT02– 0003, ODOD-AGMT-TECH-04 – 049). M.N.G. is a stockholder in iCAD. K.M.S. is a speaker for TeraRecon, San Mateo, Calif; cofounder of iVirtuoso, Baltimore, Md; and a member of the advisory board of GE Healthcare IT, Barrington, Ill. E.L.S. received research funding from GE Healthcare. All other authors have no financial relationships to disclose.

Figure 1
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  		Figure 1.  Schematic shows the architecture of a hypothetical health care grid.

 

Figure 2
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  		Figure 2.  Schematic shows the gridCAD framework and the flow of information among the components.

 

Figure 3
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  		Figure 3.  CT image with overlay shows different abnormalities identified by two CAD algorithms from different vendors. Findings marked by each algorithm are identifiable according to the geometric shape (circles or squares) and color (red or blue; here, shown in black) of the mark. In the gridCAD framework, the CAD systems are connected to the grid infrastructure as services, and the user can invoke more than one at a time.

 

Figure 4
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  		Figure 4.  Schematic shows the movement of algorithms to data repositories.

 




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