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 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 symptomatic hydronephrosis with unknown cause, although MRI can play a useful adjunct role in pregnant patients with renal colic and equivocal or nondiagnostic initial US findings [17]. Hydronephrosis on Prior Imaging-Unknown Cause 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 symptomatic 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. 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 symptomatic hydronephrosis with unknown cause, although MRI can play a useful adjunct role in pregnant patients with renal colic and equivocal or nondiagnostic initial US findings [17]. 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 symptomatic 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 There is some evidence for use of MRU without IV contrast for initial imaging of pregnant patients with symptomatic hydronephrosis with unknown cause.
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 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 symptomatic hydronephrosis with unknown cause, although MRI can play a useful adjunct role in pregnant patients with renal colic and equivocal or nondiagnostic initial US findings [17]. Hydronephrosis on Prior Imaging-Unknown Cause 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 symptomatic 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. 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 symptomatic hydronephrosis with unknown cause, although MRI can play a useful adjunct role in pregnant patients with renal colic and equivocal or nondiagnostic initial US findings [17]. 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 symptomatic 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 There is some evidence for use of MRU without IV contrast for initial imaging of pregnant patients with symptomatic hydronephrosis with unknown cause.