Diagnostic aids Diagnostic aids Diagnostic aids include radiography , CT , MRI, ultrasonogra phy and, less commonly , tomography and orbital venography . Diagnostic aids Diagnostic aids include radiography , CT , MRI, ultrasonogra phy and, less commonly , tomography and orbital venography . Diagnostic aids Diagnostic aids include radiography , CT , MRI, ultrasonogra phy and, less commonly , tomography and orbital venography .