Persistent Trigeminal Artery Causing an Abducens Nerve Palsy: A Case Report.

We present a case of a 50-year-old female who was diagnosed with an isolated right abducens nerve palsy and was found to have a persistent trigeminal artery (PTA). The trigeminal artery is the most common persistent embryological carotid-vertebrobasilar anastomosis. A PTA can be picked up as an incidental finding on magnetic resonance imaging (MRI) or angiography.

Can further subdivision of the Raymond-Roy classification of intracranial aneurysms be useful in predicting recurrence and need for future retreatment following endovascular coiling?

Background: The Raymond-Roy classification has been the standard for neck recurrences following endovascular coiling with three grades. Several modified classification systems with subdivisions have been reported in literature but it is unclear whether this adds value in predicting recurrence or retreatment. Our aim is to assess if these subdivisions aid in predicting recurrence and need for retreatment.

Computational Method to Obtain the Lifetime of Electrons for Polycrystalline Silicon Solar Cells.

Limitations in the calculation of the lifetime of electrons experimentally give a way to calculate the lifetime of the electrons inside the grains of the polycrystalline silicon solar cells through modelling. A theoretical model to calculate the same has been reported here for the first time. Dependency of the solar cell parameters on the lifetime of electrons have been employed to do the calculation.

A review on bio-synthesized zinc oxide nanoparticles using plant extracts as reductants and stabilizing agents.

In the age of technology, nanoparticles have proven to be one of the essential needs for development. These nanoparticles have the potential to be used for a wide variety of applications, thereby, development in improving the quality of nanoparticles, to make them more application specific, is still under research. In this regard, an important point to note is that the procedures employed in synthesizing nanoparticles require to be cost-effective and less-steps involved and have an additional advantage, i.

Conventional and advanced magnetic resonance imaging in tumefactive demyelination.

Background: Tumefactive demyelination (TD) is a relatively uncommon entity which mimics other focal intracranial lesions. Conventional radiological findings in tumefactive demyelination have been well described. However, DTI and MRS findings in TD have not been studied in detail.

Imaging findings in intracranial aspergillus infection in immunocompetent patients.

Aim: To study the neuroimaging features of craniocerebral aspergillosis infection in immunocompetent patients.

Materials And Methods: The clinical and imaging data of 12 patients of aspergillus fungal infection were retrospectively reviewed. Diagnosis of fungal infection was confirmed by histopathologic examination of surgically excised specimen, stereotactic biopsy material, or endoscopic sinus biopsy.

Susceptibility-weighted imaging in differentiating bilateral medial thalamic venous and arterial infarcts.

Bilateral medial thalamic infarcts may be due to thrombosis of internal cerebral veins or occlusion of artery of Percheron. Conventional MR imaging is often not helpful in differentiating the two. We discuss two cases in whom susceptibility-weighted imaging, including phase images contributed in demonstrating the thrombosed or patent internal cerebral veins.

Changing signal intensity of a craniopharyngioma.

Craniopharyngiomas can present as suprasellar cystic lesion with varied imaging appearance. In magnetic resonance imaging using T1-weighted sequence, the cyst can show hypointense, isointense or hyper intense signals depending on the cyst content. We report a case where the T1 signal intensity of a craniopharyngioma changed over time.

Chordoma of the lumbar spine presenting as sciatica and treated with vertebroplasty.

The lumbar spine is a less common location for chordoma. Here we describe a 44-year-old woman presenting with pain due to a L4 vertebral expansile lesion that caused significant canal stenosis and neural foraminal compromise. Vertebroplasty was performed and resulted in immediate pain relief.