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 new headache during pregnancy or peripartum period; the recommendation is to avoid administering IV GBCA during pregnancy. MRV Head Without IV Contrast MRV head without IV contrast can be useful in the initial imaging evaluation of new headache during pregnancy or peripartum period, because this patient demographic is at a higher risk for thromboembolic complications such as CVT, especially in the postpartum period [12,49]. After an initial brain MRI, a concurrent or follow-up MRV is useful in suspected cases of venous thrombosis. Because the recommendation is to avoid administering IV GBCA during pregnancy, this is typically performed using a noncontrast technique such as time-of-flight or phase-contrast imaging. Over the course of the last 2 decades, several studies have demonstrated a higher incidence of neuropathology for selected patients with certain red and orange flags. For example, a British literature review demonstrated that in the primary care setting, the risk of a brain tumor with a headache presentation is 0.09%; however, when the headache was associated with abnormal findings on neurologic examination, with aggravation by exertion, with vomiting, or Headache Posttraumatic onset headaches are defined as those that develop within a 7-day interval of trauma by the ICHD-3; this subset of headaches is defined as chronic or persistent if they persist beyond 3 months [23,55]. Headache One study examining 3,630 patient records noted clinically significant abnormal noncontrast CT scans in 7 patients who had a normal neurologic examination. In this study, these 7 patients described their headaches as severe and nonremitting. The study concludes that noncontrast head CT may be useful for patients suffering from severe and unremitting headaches [62].
Headache PCAs. 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 new headache during pregnancy or peripartum period; the recommendation is to avoid administering IV GBCA during pregnancy. MRV Head Without IV Contrast MRV head without IV contrast can be useful in the initial imaging evaluation of new headache during pregnancy or peripartum period, because this patient demographic is at a higher risk for thromboembolic complications such as CVT, especially in the postpartum period [12,49]. After an initial brain MRI, a concurrent or follow-up MRV is useful in suspected cases of venous thrombosis. Because the recommendation is to avoid administering IV GBCA during pregnancy, this is typically performed using a noncontrast technique such as time-of-flight or phase-contrast imaging. Over the course of the last 2 decades, several studies have demonstrated a higher incidence of neuropathology for selected patients with certain red and orange flags. For example, a British literature review demonstrated that in the primary care setting, the risk of a brain tumor with a headache presentation is 0.09%; however, when the headache was associated with abnormal findings on neurologic examination, with aggravation by exertion, with vomiting, or Headache Posttraumatic onset headaches are defined as those that develop within a 7-day interval of trauma by the ICHD-3; this subset of headaches is defined as chronic or persistent if they persist beyond 3 months [23,55]. Headache One study examining 3,630 patient records noted clinically significant abnormal noncontrast CT scans in 7 patients who had a normal neurologic examination. In this study, these 7 patients described their headaches as severe and nonremitting. The study concludes that noncontrast head CT may be useful for patients suffering from severe and unremitting headaches [62].