Doctor insights on:
Hypodensity On Ct Scan Brain
Ct uses xrays taken an 360 degrees combined with a computer to see"inside" the body. The table moves as the xray tube and detectors spin around the patient 10 times a second or more! the image shows excellent soft tissue detail, enhanced with injection of intravenous contrast or oral contrast. This way the body is shown in slices, in any plane, usually axially, but ...Read more
Not quite: The CT of the sinuses focuses in on the sinuses (though the radiation goes through the entire skull) and generally covers the entire set of sinuses (sphenoid, maxillary, frontal, ethmoid). The orbital CT will cover the eye sockets (and those pictures are zoomed in). While the sinuses lies behind the eyes (& so they overlap), the focus & coverage of these scans are slightly different. ...Read moreSee 1 more doctor answer
What does nonspecific, subtle subcortical left frontal lobe hypodensities without significant mass mean on ct scan impression?
Nothing w/o symptoms: The impression of a CT scan means nothing unless there are symptoms or signs that warrant the scan to begin with. Why was the CT scan ordered? What symptoms did you have? The impression says that there are less dense spots in the left front part of the brain, but no mass, no tumor. The cause (& significance) of the spots is unknown. Talk to the doctor who ordered the test or use HealthTap Prime. ...Read more
No: Labyrinthitis is not diagnosed with either ct or mri. It is a clinical diagnosis, meaning a diagnosis that is made by your symptoms and examination. There is a test called an eng which can be done as well that looks at how your eyes move in response to challenges to your balance system. The eyes are "hard wired" to the inner ear and in cases of vertigo they will move rapidly. This can be measured. ...Read moreSee 1 more doctor answer
They can: The diagnostic yield of increased with use of IV contrast material as some tumors disrupt the so called blood brain barrier affording the contrast the ability to infiltrate from the blood stream into the tumor. Small tumors that have not disrupted the integrity of blood vessels may escape detection on CT especially if the have the same radiographic tissue density as their surrounding tissue. ...Read more
No contrast CT showed ill defined hypodense area on hepatic lobe. Ordered new CT w contrast w liver mass protocol not hemangioma protocol concerning?
Get iv contrast CT: There are many reasons to have a liver mass, more often than not, they are benign, but clearly depending on past medical history, It is difficult without contrast to differentiate these lesions, there are various ways to give intravenous contrast. A hemangioma protocol is also known as a triphasic study, allows one to look at three phases of liver perfusion but more complex to do. ...Read more
maybe: A large pituitary tumor, or macroadenoma, may be large enough to be visible on ct, but a small pituuitary tumor, or microadenoma, will probably not be visible. An MRI (without and with contrast) of the pituitary is the preferred method to evaluate this structure. ...Read moreSee 1 more doctor answer
Many things.: It can detect many conditions. Ct is particulaly good at detecting bleeding in the acute setting and hydrocephalus, and some masses. It's not nearly as good as MRI for looking at small structures and white matter disease. Both ct and MRI are usually more sensetive and specific when contrast is given. ...Read more