Items tagged “cases”
5,551 results
Article
Sagittal vertical axis
Sagittal vertical axis/alignment (SVA) is one of the simplest and most widely used methods to assess sagittal balance 1-3.
Measurement
This measurement is performed on lateral standing full-length spine x-rays. A plumb line is drawn vertically from the middle of the C7 vertebral body 1,2 or th...
Article
Critical angle (ultrasound)
The critical angle (θc) describes a refractive phenomenon in ultrasonography, whereby a specific incident angle of the sound beam will result in 'total reflection' 1. In this situation, the transmitted sound beam, will run parallel to the boundary of the second tissue without penetrating it 1. T...
Article
Delayed intraparenchymal haemorrhage
Delayed intraparenchymal haemorrhage (DIPH), or delayed ipsilateral parenchymal haemorrhage, is a rare and serious complication following successful and otherwise uncomplicated endovascular treatment of intracranial aneurysms, usually with flow-diverter stents.
Terminology
Although delayed ips...
Article
OK sign test
The OK sign test is a clinical test to evaluate for potential injury of the anterior interosseous nerve.
Gross anatomy
The anterior interosseous nerve (roots C8-T1) is a branch off the median nerve (roots C6-T1), arising just after the median nerve passes through the two heads of the pronator ...
Article
Uveitis
Uveitis refers to inflammation of the uveal tract, which may be idiopathic, infective or inflammatory 1. It is a sight threatening condition that requires urgent ophthalmologist review.
Epidemiology
Incidence estimates vary widely, with one meta-analysis suggesting a pooled incidence of 50.45 ...
Article
Anti-CRMP-5 optic neuropathy
Anti-CRMP-5 (collapsin response-mediator protein-5) optic neuropathy, also known as anti-CV2 optic neuropathy, is a rare paraneoplastic cause of visual loss, manifesting as prelaminar optic neuritis, uveitis, and/or retinitis.
Epidemiology
Descriptions of anti-CRMP-5 optic neuropathy are confi...
Article
Heckmatt scale
The Heckmatt scale is a semi-quantitative scoring scale of muscle echogenicity. This visual grading scale compares the echogenicity of muscle to a nearby bone reflection 1-4 and is widely used in the sonographic evaluation of myopathies and other neuromuscular pathologies.
Grading
The Heckmatt...
Article
Undulating fascia sign
The undulating fascia sign is a radiological sign described in MRI of the lower limbs, typically, but not exclusively, in sporadic inclusion body myositis.
The undulating fascia sign refers to the appearance of the fascia between the vastus intermedius and vastus lateralis muscles on T1 sequenc...
Article
Mild malformation of cortical development with oligodendroglial hyperplasia and epilepsy (MOGHE)
Mild malformation of cortical development with oligodendroglial hyperplasia and epilepsy (MOGHE) is a histopathological entity primarily associated with drug-resistant frontal lobe epilepsy. MOGHE is characterised by a distinct histological phenotype that includes blurred gray-white matter bound...
Article
Q-Factor
The Q-factor is the ratio of the centre frequency (f0) to the bandwidth.
High Q-factor transducer indicates a narrow bandwidth and a long spatial pulse length with low damping and narrow bandwidth. This commonly used in doppler ultrasound where a narrow bandwidth is needed to accurately quantif...
Article
Supratentorial lymphocytic inflammation with parenchymal perivascular enhancement responsive to steroids (SLIPPERS)
Supratentorial lymphocytic inflammation with parenchymal perivascular enhancement responsive to steroids (SLIPPERS) is a rare inflammatory disorder that shares pathoradiological similarities with chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids (CLIPP...
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