What is a CT petrous bones scan for?

What is a CT petrous bones scan for?

Because of the excellent imaging of bone structures with MSCT, this technique is especially suitable for the diagnosis both of acquired pathologies and of congenital abnormalities of the external auditory meatus, the middle ear and the mastoid, of trauma-induced pathologies of the entire petrous bone, and of osteogenic …

Where is the petrous bone located?

temporal bone
The petrous part is a wedge shaped mass of bone located between the sphenoid and occipital bones within the cranial cavity. It is the most medial part of the temporal bone, and it is the landmark dividing the middle and posterior cranial fossae from each other.

What does Petrous mean in anatomy?

Definition of petrous : of, relating to, or constituting the exceptionally hard and dense portion of the human temporal bone that contains the internal auditory organs.

Can CT scan detect inner ear problem?

CT scans use electromagnetic radiation to take a series of X-rays of the interior structures of the ear and create a computerized three-dimensional image. CT scans may reveal damage to the bony components of the ear or an abnormal bone growth in the middle ear, a condition called otosclerosis.

What is the petrous apex?

The petrous apex is located in the temporal bone — one of the bones of the skull that houses the structures of the ear. The petrous apex is a difficult area for surgeons to get to; it is essentially just off the midline of the skull base.

What is the squamous part of the temporal bone?

The squamous part of temporal bone (squama) forms the anterior and upper part of the bone, located between the sphenoid, parietal and occipital bones, and is scale-like, thin, and translucent.

What is petrous part in anatomy?

Which structures are contained within the petrous portion of the temporal bone?

The mammalian inner ear is housed inside the petrous part of the temporal bone, in a complex-shaped space known as the bony labyrinth. The organ of balance, or vestibular system, consists of two types of motion sensors.

Will vertigo show up on CT scan?

CT is not a good first-line test for vertigo, and patients deemed to require imaging should undergo MRI.

Can you see Meniere’s disease on CT scan?

A test called an electronystagmogram (ENG), which measures your eye movements. This can help the doctor find where the problem is that’s causing vertigo. Imaging tests such as an MRI or CT scan of the head. These tests can find out if the symptoms are caused by a brain problem.

What does petrous mean in anatomy?

What is petrous temporal bone?

The petrous part of the temporal bone is pyramid-shaped and is wedged in at the base of the skull between the sphenoid and occipital bones. Directed medially, forward, and a little upward, it presents a base, an apex, three surfaces, and three angles, and houses in its interior, the components of the inner ear.

What does squamous mean in anatomy?

Squamous cells are thin, flat cells that look like fish scales, and are found in the tissue that forms the surface of the skin, the lining of the hollow organs of the body, and the lining of the respiratory and digestive tracts.

What nerves are in the petrous temporal bone?

The vagus nerve, by its auricular branch that separates from it just beneath the cranial base. It then runs in an osseous canal nestled in the petrous part of the temporal bone (mastoid canaliculus) and gives off a small branch to the facial nerve.

What surface is missing in the petrous part?

The petrous portion is among the most basal elements of the skull and forms part of the endocranium. Petrous comes from the Latin word petrosus, meaning “stone-like, hard”. It is one of the densest bones in the body….

Can a CT scan see the inner ear?

A CT (computed tomography) scan uses X-rays to make detailed pictures of your body and the structures inside your body. A CT scan of the head can give your doctor information about your eyes, the bones of your face and nose, your inner ear, and your brain.