CTA Head and Neck There is no relevant literature to support the use of CTA head and neck in the initial evaluation of children with nontraumatic vision loss. CTA Head There is no relevant literature to support the use of CTA head in the initial evaluation of children with nontraumatic vision loss. MRA Head There is no relevant literature to support the use of MRA head in the initial evaluation of children with nontraumatic vision loss. MRI Head MRI of the brain without IV contrast may also be complementary to CT scan for confirmation of acute infarct or intracranial hemorrhage. MRI head with and without IV contrast is obtained to evaluate the brain for intracranial demyelinating lesions, location, and distribution, which helps determine appropriate differential diagnosis [17,18]. MRI Head and Orbits MRI of the head and orbits with and without IV contrast is the most useful imaging modality for the evaluation of acute nontraumatic vision loss. T1-weighted postcontrast images with fat suppression were reported to identify abnormal enhancement of the optic nerve in 95% of cases of optic neuritis [19]. MRI is also the most useful modality for the evaluation of the lesions involving extraorbital neurovisual pathway and the remainder of the brain parenchyma. Orbital Imaging and Vision Loss-Child MRI Orbits MRI of the orbits with and without IV contrast is useful for evaluation of globes and optic nerves in cases of acute nontraumatic vision loss. T1-weighted postcontrast images with fat suppression were reported to identify abnormal enhancement of the optic nerve in 95% of cases of optic neuritis [19]. In the setting of acute vision loss, MRI of the orbits alone is inadequate, and it is usually performed along with an MRI of the head because the pathologies leading to visual loss frequently involve extraorbital neurovisual pathway and other locations within the brain parenchyma. Variant 3: Child with isolated nystagmus. Initial imaging.
Orbital Imaging and Vision Loss Child. CTA Head and Neck There is no relevant literature to support the use of CTA head and neck in the initial evaluation of children with nontraumatic vision loss. CTA Head There is no relevant literature to support the use of CTA head in the initial evaluation of children with nontraumatic vision loss. MRA Head There is no relevant literature to support the use of MRA head in the initial evaluation of children with nontraumatic vision loss. MRI Head MRI of the brain without IV contrast may also be complementary to CT scan for confirmation of acute infarct or intracranial hemorrhage. MRI head with and without IV contrast is obtained to evaluate the brain for intracranial demyelinating lesions, location, and distribution, which helps determine appropriate differential diagnosis [17,18]. MRI Head and Orbits MRI of the head and orbits with and without IV contrast is the most useful imaging modality for the evaluation of acute nontraumatic vision loss. T1-weighted postcontrast images with fat suppression were reported to identify abnormal enhancement of the optic nerve in 95% of cases of optic neuritis [19]. MRI is also the most useful modality for the evaluation of the lesions involving extraorbital neurovisual pathway and the remainder of the brain parenchyma. Orbital Imaging and Vision Loss-Child MRI Orbits MRI of the orbits with and without IV contrast is useful for evaluation of globes and optic nerves in cases of acute nontraumatic vision loss. T1-weighted postcontrast images with fat suppression were reported to identify abnormal enhancement of the optic nerve in 95% of cases of optic neuritis [19]. In the setting of acute vision loss, MRI of the orbits alone is inadequate, and it is usually performed along with an MRI of the head because the pathologies leading to visual loss frequently involve extraorbital neurovisual pathway and other locations within the brain parenchyma. Variant 3: Child with isolated nystagmus. Initial imaging.