Merge pull request #1327 from nipreps/fix/1315-revised

FIX: Revise bugfix #1324

mriqc/interfaces/diffusion.py

@@ -662,17 +662,8 @@ def _run_interface(self, runtime):
                 self.inputs.full_epi, suffix='_nodriftfull', newpath=runtime.cwd
             )
             full_img = nb.load(self.inputs.full_epi)
-
-            # Read slope and intercept (see #1315)
-            slope, intercept = full_img.header.get_slope_inter()
-            slope = slope if slope is not None else 1.0
-            intercept = intercept if intercept is not None else 0.0
-            corrected = (
-                full_img.get_fdata() * fitted[np.newaxis, np.newaxis, np.newaxis, :] / slope
-                - intercept
-            )
             full_img.__class__(
-                corrected.astype(full_img.header.get_data_dtype()),
+                full_img.get_fdata() * fitted[np.newaxis, np.newaxis, np.newaxis, :],
                 full_img.affine,
                 full_img.header,
             ).to_filename(self._results['out_full_file'])