These techniques are, therefore, useful in the follow-up imaging evaluation of headache with features of intracranial hypotension, when refractory to nontargeted therapy. The choice between spinal CSF leak localization techniques may depend on the suspected CSF leak type (dural tear versus distal nerve root sleeve) and also on the preferences of different institutions. Although radioisotope cisternography can be used in some scenarios to help confirm the presence of a spinal CSF leak, it has insufficient spatial resolution for precise leak localization. MRV Head With IV Contrast There is no relevant literature to support the use of MRV head with IV contrast in the initial imaging evaluation of headache with features of intracranial hypotension. MRV Head Without and With IV Contrast There is no relevant literature to support the use of MRV head without and with IV contrast in the initial imaging evaluation of headache with features of intracranial hypotension. MRV Head Without IV Contrast There is no relevant literature to support the use of MRV head without IV contrast in the initial imaging evaluation of headache with features of intracranial hypotension. Variant 6: Headache with new onset or pattern during pregnancy or peripartum period. Initial imaging. Thirty-five percent of pregnant women and 40% of postpartum women experience headache. Although migraine headaches are common, evidence shows that during the second trimester, migraine symptoms typically improve. More than a third of pregnant women presenting to the hospital can have a secondary headache [47-49]. Total blood volume increase (by 40% at term) and rising progesterone levels in the third trimester can contribute to increased venous compliance. These are factors that can explain some of the neurological complications in pregnancy [49]. A study at an urban medical center conducted over a 5-year period examining 140 pregnant women presenting with acute headache demonstrated an incidence of secondary headaches in 35%.
Headache PCAs. These techniques are, therefore, useful in the follow-up imaging evaluation of headache with features of intracranial hypotension, when refractory to nontargeted therapy. The choice between spinal CSF leak localization techniques may depend on the suspected CSF leak type (dural tear versus distal nerve root sleeve) and also on the preferences of different institutions. Although radioisotope cisternography can be used in some scenarios to help confirm the presence of a spinal CSF leak, it has insufficient spatial resolution for precise leak localization. MRV Head With IV Contrast There is no relevant literature to support the use of MRV head with IV contrast in the initial imaging evaluation of headache with features of intracranial hypotension. MRV Head Without and With IV Contrast There is no relevant literature to support the use of MRV head without and with IV contrast in the initial imaging evaluation of headache with features of intracranial hypotension. MRV Head Without IV Contrast There is no relevant literature to support the use of MRV head without IV contrast in the initial imaging evaluation of headache with features of intracranial hypotension. Variant 6: Headache with new onset or pattern during pregnancy or peripartum period. Initial imaging. Thirty-five percent of pregnant women and 40% of postpartum women experience headache. Although migraine headaches are common, evidence shows that during the second trimester, migraine symptoms typically improve. More than a third of pregnant women presenting to the hospital can have a secondary headache [47-49]. Total blood volume increase (by 40% at term) and rising progesterone levels in the third trimester can contribute to increased venous compliance. These are factors that can explain some of the neurological complications in pregnancy [49]. A study at an urban medical center conducted over a 5-year period examining 140 pregnant women presenting with acute headache demonstrated an incidence of secondary headaches in 35%.