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Functional MR Imaging versus Wada Test for Evaluation of Language Lateralization: Cost Analysis1

L. Santiago Medina, MD, MPH, Elsa Aguirre, RT, Byron Bernal, MD and Nolan R. Altman, MD

1 From the Division of Neuroradiology and Health Outcomes, Policy and Economics (HOPE) Center, Department of Radiology, Miami Children’s Hospital, 3100 SW 62 Ave, Miami, FL 33155 (L.S.M., E.A., B.B., N.R.A.). Received August 30, 2002; revision requested October 28; final revision received March 24, 2003; accepted May 8, 2003. Address correspondence to L.S.M. (e-mail: santiago.medina@mch.com).



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  		Figure 1. Flowchart of the Wada test procedure.

 


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  		Figure 2. Flowchart of functional MR imaging procedure.

 


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  		Figure 3. Bar graph shows direct (fixed and variable) costs of functional MR imaging versus the Wada test (P < .001).

 


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  		Figure 4. Graph shows results of sensitivity analysis of fixed costs per examination with functional MR imaging and with the Wada test at five different daily use levels.

 




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