Before revision:  Further, fitting by DNNs was several orders of magnitude quicker than the other methods  . Conclusion: DNNs are recommended for accurate and robust IVIM model fitting to DW-MRI data.
After revision:  Further, fitting by DNNs was several orders of magnitude quicker than the other methods but the networks may need to be re-trained for different acquisition protocols or imaged anatomical regions . Conclusion: DNNs are recommended for accurate and robust IVIM model fitting to DW-MRI data.