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Role of imaging in the management of neuro-ophthalmic disorders.

Gandhi RA, Nair AG - Indian J Ophthalmol (2011 Mar-Apr)

Bottom Line: Advancements in physics, computers, and imaging science in the last century have seen neuro-imaging evolving from a plain X-ray to computed tomography, magnetic resonance imaging scans, noninvasive angiography, and special sequences such as fat suppression, fluid attenuation recovery and diffusion-weighted imaging.A prompt prescription of an appropriate imaging modality and the most suitable sequence can increase the diagnostic yield, and in many instances, it can be a sight-saving and even a life-saving decision.This article discusses basic principles of neuro-imaging, its common indications, and the appropriate application in an ophthalmology practice.

View Article: PubMed Central - PubMed

Affiliation: Sankara Nethralaya, A Unit of Medical Research Foundation, Chennai - 600 006, Tamil Nadu, India. rashmin70@yahoo.com

ABSTRACT
Advancements in physics, computers, and imaging science in the last century have seen neuro-imaging evolving from a plain X-ray to computed tomography, magnetic resonance imaging scans, noninvasive angiography, and special sequences such as fat suppression, fluid attenuation recovery and diffusion-weighted imaging. A prompt prescription of an appropriate imaging modality and the most suitable sequence can increase the diagnostic yield, and in many instances, it can be a sight-saving and even a life-saving decision. This article discusses basic principles of neuro-imaging, its common indications, and the appropriate application in an ophthalmology practice.

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Related in: MedlinePlus

Coronal CT scan of the orbit at 1mm interval for the optic canals in the bone window setting showing a fracture of the medial wall and the roof of the right optic canal (Yellow arrow)
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Figure 0006: Coronal CT scan of the orbit at 1mm interval for the optic canals in the bone window setting showing a fracture of the medial wall and the roof of the right optic canal (Yellow arrow)

Mentions: In patients with suspected traumatic optic neuropathy, a CT scan of the brain with fine cuts (axial sections of 1-1.5 mm) through the orbits should be sought. Coronal images are necessary to evaluate the optic canal properly and to rule out a fracture. In patients with traumatic optic neuropathy, orbital fractures especially canal fractures have been associated with poorer visual acuity and a poor prognosis [Fig. 6]. MRI of the orbit may reveal focal edema of the optic nerve or optic nerve sheath enhancement with gadolinium.


Role of imaging in the management of neuro-ophthalmic disorders.

Gandhi RA, Nair AG - Indian J Ophthalmol (2011 Mar-Apr)

Coronal CT scan of the orbit at 1mm interval for the optic canals in the bone window setting showing a fracture of the medial wall and the roof of the right optic canal (Yellow arrow)
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3116539&req=5

Figure 0006: Coronal CT scan of the orbit at 1mm interval for the optic canals in the bone window setting showing a fracture of the medial wall and the roof of the right optic canal (Yellow arrow)
Mentions: In patients with suspected traumatic optic neuropathy, a CT scan of the brain with fine cuts (axial sections of 1-1.5 mm) through the orbits should be sought. Coronal images are necessary to evaluate the optic canal properly and to rule out a fracture. In patients with traumatic optic neuropathy, orbital fractures especially canal fractures have been associated with poorer visual acuity and a poor prognosis [Fig. 6]. MRI of the orbit may reveal focal edema of the optic nerve or optic nerve sheath enhancement with gadolinium.

Bottom Line: Advancements in physics, computers, and imaging science in the last century have seen neuro-imaging evolving from a plain X-ray to computed tomography, magnetic resonance imaging scans, noninvasive angiography, and special sequences such as fat suppression, fluid attenuation recovery and diffusion-weighted imaging.A prompt prescription of an appropriate imaging modality and the most suitable sequence can increase the diagnostic yield, and in many instances, it can be a sight-saving and even a life-saving decision.This article discusses basic principles of neuro-imaging, its common indications, and the appropriate application in an ophthalmology practice.

View Article: PubMed Central - PubMed

Affiliation: Sankara Nethralaya, A Unit of Medical Research Foundation, Chennai - 600 006, Tamil Nadu, India. rashmin70@yahoo.com

ABSTRACT
Advancements in physics, computers, and imaging science in the last century have seen neuro-imaging evolving from a plain X-ray to computed tomography, magnetic resonance imaging scans, noninvasive angiography, and special sequences such as fat suppression, fluid attenuation recovery and diffusion-weighted imaging. A prompt prescription of an appropriate imaging modality and the most suitable sequence can increase the diagnostic yield, and in many instances, it can be a sight-saving and even a life-saving decision. This article discusses basic principles of neuro-imaging, its common indications, and the appropriate application in an ophthalmology practice.

Show MeSH
Related in: MedlinePlus