Items tagged “snippet”
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Breast MRI classification flowchart
The breast MRI classification flowchart (or Tree algorithm) is an evidence-based clinical decision rule to distinguish benign from malignant lesions in breast MRI. It incorporates five diagnostic criteria that are mainly consistent with BI-RADS though assigning diagnostic weights. Diagnostic cr...
The stellate ganglion is formed by the inferior cervical and first thoracic ganglia and is located just anterior to the head of the first rib. It receives input from the paravertebral sympathetic chain and provides sympathetic efferents to the upper limbs, head, neck, and heart. The stellate ga...
In accordance with Faraday's Law of Induction, rapidly changing gradient magnetic fields can induce stray currents, known as eddy currents, in the surrounding conducting materials. Eddy currents are unwanted as they generate their own magnetic fields, which oppose the original magnetic field vi...
The naso-orbital-ethmoid (NOE) region or interorbital region simply refers to the space between the orbits. Gross anatomy Boundaries anterior: frontal process of the maxilla, nasal process of frontal bone, nasal bone posterior: sphenoid sinus lateral: medial orbital wall superior: cribrif...
The medial lemniscus, also know as Reil's band, is an ascending bundle of myelinated axons from the gracile and cuneate nuclei after they decussate in the medulla oblongata. Gross anatomy It is part of the larger dorsal column medial lemniscus pathway, important for conveying the sensation fo...
Sack of marbles sign
The sack of marbles sign refers to aggregations of multiple small globules of fat within a cyst mimicking marble spheres within a sack. They appear hyperechoic on ultrasound, fat attenuation on CT, and high signal on T1WI and T2WI on MRI. It is considered highly suggestive of a dermoid cyst 1.
Left ventricular outflow tract
The left ventricular outflow tract (LVOT) is considered represent the region of the left ventricle that lies between the anterior cusp of the mitral valve and the ventricular septum. Its dimensions are often recorded in the TAVI work up studies. Related pathology left ventricular outflow trac...
Longitudinal versus transverse petrous temporal bone fracture
Petrous temporal bone fractures are classically divided into longitudinal, transverse or mixed fracture patterns depending on the direction of fracture plane with respect to the long axis of the petrous temporal bone. Some features may aid in distinguishing them. Longitudinal pe...
Greater (descending) palatine artery
The greater (descending) palatine artery is a branch of the third part of the maxillary artery which passes through the greater palatine foramen to supply most of the hard palate. Gross anatomy After branching off from the third (pterygopalatine) part of the maxillary artery, the greater palat...