CT images of internal organs, bones, soft tissue, and blood vessels provide greater detail than traditional x-rays. This is especially true for soft tissues and blood vessels. A CT scan of the face produces images that also show a patient's paranasal sinus cavities..
How are techniques in screening CT of the sinuses optimized?
CT technical factors are optimized with scanning in the prone position with thin (3-mm) sections obtained through the anterior paranasal sinuses. This allows optimal visualization of the ostiomeatal unit..
How do they do a CT scan of sinuses?
You will be asked to lie on a narrow table that slides into the center of the CT scanner. You may lie on your back, or you may lie face-down with your chin raised. Once you are inside the scanner, the machine's x-ray beam rotates around you. You will not see the rotating x-ray beam..
What does a CT scan show for sinuses?
CT rapidly creates detailed pictures of the sinuses. The test may diagnose or detect: Abnormal nasal drainage. An abnormal finding on an x-ray or nasal endoscopy..
What is a CT finding of sinusitis?
Sinusitis is defined as an inflammation of the mucous membrane of the paranasal sinuses or their underlying bone. Mucosal thickening, air-fluid levels, and ostio-meatal complex blockade are the important CT scan findings in sinusitis..
A CT scan of the brain is helpful for doctors to evaluate what might be causing severe headaches or other problems. A CT scan of the sinuses can determine if a patient has a sinus infection. If only the brain or only the sinus CT scan is needed for diagnosis, only one test should be performed.
The PNS X-ray is requested (2) when the patient experiences blocked sinuses due to too much of mucous build up, bacteria and germ which leads to infection and inflammation of the sinuses and is referred to as sinusitis (infection of the sinuses). Other sinuses related problems such as deviated septum.
Use of CT is typically reserved for difficult cases or to define anatomy prior to sinus surgery. Magnetic resonance imaging (MRI) cannot define bony anatomy as well as CT. MRI is only used to differentiate soft-tissue structures, such as in cases of suspected fungal infection or neoplasm.
Definition. A computed tomography (CT) scan of the sinus is an imaging test that uses x-rays to make detailed pictures of the air-filled spaces inside the face (sinuses).
Dermoid sinus is thought to be a genetic skin condition in dogs. It is also known as pilonidal sinus. However, unlike pilonidal sinus in humans, the dermoid sinus in dogs is a neural tube defect. Dermoid sinus is sometimes also confused with dermoid cyst.
Collapse of an air sinus
Silent sinus syndrome is a spontaneous, asymptomatic collapse of an air sinus associated with negative sinus pressures. It can cause painless facial asymmetry, diplopia and enophthalmos. Diagnosis is suspected based on symptoms, and can be confirmed using a CT scan. Treatment is surgical involving making an outlet for mucous drainage from the obstructed sinus, and, in some cases, paired with reconstruction of the orbital floor. It is slightly more common in middle age.
Computed tomography sinuses
Maxillary sinus floor augmentation is a surgical procedure which aims to increase the amount of bone in the posterior maxilla, in the area of the premolar and molar teeth, by lifting the lower Schneiderian membrane and placing a bone graft.
