What does effacement in the brain mean?
Efface is a term frequently used by radiologists, most often in the context of CSF-containing spaces in the brain (sulci and ventricles). Unfortunately, it is often used incorrectly. The word efface, in general English usage, means to cause something to fade or disappear 1,2.
What are basal cisterns?
The subarachnoid cisterns, or basal cisterns, are compartments within the subarachnoid space where the pia mater and arachnoid membrane are not in close approximation and cerebrospinal fluid (CSF) forms pools or cisterns (Latin: “box”). As they are interconnected, their patency is essential for CSF circulation.
What is ventricle effacement?
of effaced. lateral ventricles. in premature. infants, defined as the absence of visible CSF within the lateral ventricles on both coronal and sagittal sonograms, may be cause to suspect diffuse cerebral edema, especially as published reference standards do not address this phenomenon.
What does effacement of the sulci mean?
Sulcal effacement is a local secondary sign of mass effect in the cranium. Any lesion exerting mass effect on brain parenchyma can push adjacent gyri together, thereby displacing the CSF from the sulci.
What does effacement mean on MRI?
When effacement or impingement is identified on the report, it means that the sheathe surrounding your spinal cord and nerves is being pressed on.
What does completely effaced mean?
Normally, your cervix is closed, firm, and elongated (between 3.5 and 4 centimeters long). When you go into labor, the cervix thins out and becomes softer and shorter. This is called effacement. It’s measured in percentages from 0 to 100 percent, the latter of which means you’re fully effaced.
Are basal cisterns ventricles?
The cisterns are not ventricles but rather outpouchings of the subarachnoid space. When evaluating a CT brain the following, certain cisterns have clinical relevance for potential herniation syndromes, layering of subarachnoid blood, and/or the significant structures that run through them.
What is in the lumbar cistern?
Lumbar cistern The space inside the arachnoid mater is filled with cerebrospinal fluid (CSF). Below the conus medullaris, this space is enlarged. This enlargement is called the lumbar cistern and contains CSF, the filum terminale, and the cauda equina.
What is effacement of the right lateral ventricle?
Objective: The sonographic finding of effaced lateral ventricles in premature infants, defined as the absence of visible CSF within the lateral ventricles on both coronal and sagittal sonograms, may be cause to suspect diffuse cerebral edema, especially as published reference standards do not address this phenomenon.
What is mild Sulcal effacement?
How much does your cervix dilate?
In general, once the active stage of labor kicks in, it’s a safe bet to expect a steady cervical dilation every hour. Many women don’t start really dilating more regularly until closer to around 6 cm. The first stage of labor ends when a woman’s cervix is fully dilated to 10 cm and fully effaced (thinned out).
Is thecal sac effacement serious?
CONCLUSIONS: CT percentage thecal sac effacement of 50% predicts significant spinal stenosis on MR imaging in patients with clinically suspected cauda equina syndrome. CT percentage thecal sac effacement of 50% appears to reliably rule out cauda equina impingement.
What does effacement of ventral CSF mean?
What does effacement of ventral csf mean? Imaging study: This is often noted when there is suspicion of a herniated nucleus pulposis as a cause of low back problems. Something is in the space that should be… Read More What is mild effacement of the ventral csf space? CSF: It depends on the clinical situation.
What is effacement of the lateral recesses mean?
Lateral Recess Stenosis is a condition where the narrowing reduces the available space within the exit doorway (foramen) of the spinal canal. This may be caused by arthritic overgrowth of the facet joints, degeneration of the disc with loss of tension in the disc and loss of disc height, overriding of the facet joints with concurrent bulging of
What does effacement of Sulci mean?
Sulcal effacement is a local secondary sign of mass effect in the cranium. Any lesion exerting mass effect on brain parenchyma can push adjacent gyri together, thereby displacing the CSF from the sulci. In this way, what are basal cisterns? The interpeduncular cistern (or basal cistern) is one of the subarachnoid cisterns.
What are the basilar cisterns?
The term “basal cistern” refers to the opening’s location at the base of a pair of stem-like fibrous bundles called cerebral peduncles. These structures are part of a larger network of cells that connect the brain’s different sections.