MRA Head There is no relevant literature to support the use of MR angiography (MRA) head in the initial evaluation of orbital trauma. MRI Head MRI of the head provides more detailed information about brain parenchyma and other intracranial structures due to its superior soft tissue contrast (versus CT) but remains supplementary to a CT as an initial imaging modality in the setting of orbital trauma. There is no relevant literature to support the role of contrast-enhanced MRI head in the initial evaluation of the orbital trauma. MRI Orbits MRI of the orbits may provide useful detailed information due to its superior soft tissue contrast, particularly in the evaluation of the globe and optic nerves. MRI may also be useful in detecting nonmetallic intraorbital foreign body, especially a wooden foreign body, which may appear hypoattenuating on CT and may be mistaken for air [12]. However, it remains supplementary to a CT scan as an initial imaging modality in orbital trauma. There is no relevant literature to support the role of contrast-enhanced MRI orbits in the initial evaluation of orbital trauma. Orbital Imaging and Vision Loss-Child Radiography Orbit Radiography is insufficient in the detection of the pathology in cases of orbital trauma and has been replaced by CT in current clinical practice [12]. Radiography of the orbits may have a role as a screening modality for the detection of a metallic intraorbital foreign body before performing an MRI scan. However, a CT scan of the orbits is a more sensitive modality for detection of metallic intraocular foreign body and is usually performed prior to MRI in cases of orbital trauma [12,13]. Variant 2: Child. Nontraumatic acute vision loss without papilledema. Initial imaging. Causes of acute nontraumatic vision loss in children may be due to ocular abnormalities or lesions in the neurovisual pathway. Ocular abnormalities involving the cornea, lens, or anterior chamber are best diagnosed by an ophthalmologic examination.
Orbital Imaging and Vision Loss Child. MRA Head There is no relevant literature to support the use of MR angiography (MRA) head in the initial evaluation of orbital trauma. MRI Head MRI of the head provides more detailed information about brain parenchyma and other intracranial structures due to its superior soft tissue contrast (versus CT) but remains supplementary to a CT as an initial imaging modality in the setting of orbital trauma. There is no relevant literature to support the role of contrast-enhanced MRI head in the initial evaluation of the orbital trauma. MRI Orbits MRI of the orbits may provide useful detailed information due to its superior soft tissue contrast, particularly in the evaluation of the globe and optic nerves. MRI may also be useful in detecting nonmetallic intraorbital foreign body, especially a wooden foreign body, which may appear hypoattenuating on CT and may be mistaken for air [12]. However, it remains supplementary to a CT scan as an initial imaging modality in orbital trauma. There is no relevant literature to support the role of contrast-enhanced MRI orbits in the initial evaluation of orbital trauma. Orbital Imaging and Vision Loss-Child Radiography Orbit Radiography is insufficient in the detection of the pathology in cases of orbital trauma and has been replaced by CT in current clinical practice [12]. Radiography of the orbits may have a role as a screening modality for the detection of a metallic intraorbital foreign body before performing an MRI scan. However, a CT scan of the orbits is a more sensitive modality for detection of metallic intraocular foreign body and is usually performed prior to MRI in cases of orbital trauma [12,13]. Variant 2: Child. Nontraumatic acute vision loss without papilledema. Initial imaging. Causes of acute nontraumatic vision loss in children may be due to ocular abnormalities or lesions in the neurovisual pathway. Ocular abnormalities involving the cornea, lens, or anterior chamber are best diagnosed by an ophthalmologic examination.