Computed tomography (CT) scan is generally the first line imaging study in trauma but is often normal. Magnetic resonance imaging of the head (MRI) is often unremarkable in CNV IV palsy …

2024年12月23日 · The trochlear nerve is the fourth (CN IV) and thinnest cranial nerve. It exits the midbrain posteriorly, eventually passes into the cavernous sinus and into the orbit where it …

2023年11月15日 · Trochlear nerve palsies, or fourth nerve palsies, result in weakness of the superior oblique muscle. Vertical diplopia and ipsilateral hypertropia in the absence of ptosis, …

2019年12月13日 · MRI brain with and without contrast is the best imaging modality to evaluate for cranial nerve schwannomas. Setting aside the rare large fourth nerve schwannomas causing …

cn4是最细的颅神经，mr成像显示相对困难，实验早期仅27.5%显示，远低于文献报道 [12,13] 。 分析原因，CN4为最纤细的颅神经，直径仅为0.75～1.00 mm；四叠体池宽度也是影响CN4显 …

Advances in MRI have led to a paradigm shift regarding the etiology of congenital fourth nerve palsy. Most patients have a congenital cranial dysinnervation disorder, defined as a …

Recent findings: High-definition MRI, which can now more accurately image the trochlear nerve, has increased our understanding of the pathology of fourth nerve palsies. A more sensitive two …

The patients’ age of onset, sex, presence of head tilt, findings from brain magnetic resonance imaging (MRI), and previous medical history, especially the presence of vascular risk factors …

High-resolution 3-dimensional (3D) MRI is optimal for detection of certain CN IV segments because it emerges from the midbrain and courses through the quadrigeminal and ambient …

2015年11月10日 · Cranial nerve IV (trochlear nerve) is a somatic motor nerve that innervates the superior oblique muscle, which intorts, infraducts, and abducts the globe. The nucleus of CN …