Gadolinium contrast administration is avoided during pregnancy and should be considered only if the imaging is essential and cannot be delayed [42] or replaced by alternative imaging. MRI Abdomen and Pelvis Without IV Contrast Although there is limited evidence to support the use of MRI abdomen and pelvis without IV contrast (separate from MRU) for initial imaging of pregnant patients with asymptomatic hydronephrosis with unknown cause, it may be useful in this setting in some clinical situations. MRU without IV contrast may provide additional information in this setting. MRI Abdomen Without and With IV Contrast There is limited evidence to support the use of MRI abdomen without and with IV contrast (separate from MRU) for initial imaging of pregnant patients with asymptomatic hydronephrosis with unknown cause. Gadolinium contrast administration is avoided during pregnancy and should be considered only if the imaging is essential and cannot be delayed [42] or replaced by alternative imaging. Hydronephrosis on Prior Imaging-Unknown Cause MRI Abdomen Without IV Contrast There is limited evidence to support the use of MRI abdomen without IV contrast (separate from MRU) for initial imaging of pregnant patients with asymptomatic hydronephrosis with unknown cause. MRU Without and With IV Contrast There is limited evidence to support the use of MRU without and with IV contrast for initial imaging of pregnant patients with asymptomatic hydronephrosis with unknown cause. Gadolinium contrast administration is avoided during pregnancy and should be considered only if the imaging is essential and cannot be delayed [42] or replaced by alternative imaging. MRU Without IV Contrast Although there is limited evidence to support the use of MRU without IV contrast for initial imaging of pregnant patients with asymptomatic hydronephrosis with unknown cause, MRU without IV contrast is preferred over CTU in pregnant patients [15].
Hydronephrosis on Prior Imaging Unknown Cause. Gadolinium contrast administration is avoided during pregnancy and should be considered only if the imaging is essential and cannot be delayed [42] or replaced by alternative imaging. MRI Abdomen and Pelvis Without IV Contrast Although there is limited evidence to support the use of MRI abdomen and pelvis without IV contrast (separate from MRU) for initial imaging of pregnant patients with asymptomatic hydronephrosis with unknown cause, it may be useful in this setting in some clinical situations. MRU without IV contrast may provide additional information in this setting. MRI Abdomen Without and With IV Contrast There is limited evidence to support the use of MRI abdomen without and with IV contrast (separate from MRU) for initial imaging of pregnant patients with asymptomatic hydronephrosis with unknown cause. Gadolinium contrast administration is avoided during pregnancy and should be considered only if the imaging is essential and cannot be delayed [42] or replaced by alternative imaging. Hydronephrosis on Prior Imaging-Unknown Cause MRI Abdomen Without IV Contrast There is limited evidence to support the use of MRI abdomen without IV contrast (separate from MRU) for initial imaging of pregnant patients with asymptomatic hydronephrosis with unknown cause. MRU Without and With IV Contrast There is limited evidence to support the use of MRU without and with IV contrast for initial imaging of pregnant patients with asymptomatic hydronephrosis with unknown cause. Gadolinium contrast administration is avoided during pregnancy and should be considered only if the imaging is essential and cannot be delayed [42] or replaced by alternative imaging. MRU Without IV Contrast Although there is limited evidence to support the use of MRU without IV contrast for initial imaging of pregnant patients with asymptomatic hydronephrosis with unknown cause, MRU without IV contrast is preferred over CTU in pregnant patients [15].