     # The common modeling x-axis specification.
     x =
       label: 'Visit Date'
-      accessor: (session) -> session.acquisition_date.valueOf()
+      accessor: (session) -> session.acquisitionDate.valueOf()
 
     # The chart-specific y-axis specifications.
     y =

              (current - previous)/previous * 100
          
            # Return an object with the change properties.
            delta_k_trans_pct_change: percent_change(current.delta_k_trans, previous.delta_k_trans)
            fxl_k_trans_pct_change: percent_change(current.fxl_k_trans, previous.fxl_k_trans)
            fxr_k_trans_pct_change: percent_change(current.fxr_k_trans, previous.fxr_k_trans)
            v_e_pct_change: percent_change(current.v_e, previous.v_e)
            tau_i_pct_change: percent_change(current.tau_i, previous.tau_i)
        

            {
              label: 'FXL Ktrans'
              color: 'BurlyWood'
              accessor: (session) -> session.modeling.fxlKTrans
            }
            {
              label: 'FXR Ktrans'
              color: 'OliveDrab'
              accessor: (session) -> session.modeling.fxrKTrans
            }
          ]
      ve:
