Home Removal RCT of the temporal bones. CT scan of the temporal bones: when is the procedure prescribed, what does computed tomography show? MSKT and the use of contrast

RCT of the temporal bones. CT scan of the temporal bones: when is the procedure prescribed, what does computed tomography show? MSKT and the use of contrast

CT scan temporal bones– the most reliable way to examine the temporal bones, anatomical structure and visualize the soft tissues that surround the temporal bone. Arranged this area not just: it contains Eustachian tube, cells mastoid process, middle and inner ear.

What does a CT scan of the temporal bones show?

The complex structure and surrounding of the temporal region with so many anatomical structures nearby does not always allow the doctor to place accurate diagnosis, clarify the location of the pathology and prescribe treatment.

In this case, it comes to the rescue CT scan, which provides layer-by-layer images of the desired area of ​​the human body.

Thanks to the images, you can detect the slightest changes, pathologies, and examine the cochlea inner ear, hematoma, inflammatory process.

Indications for use

Examination of this area is usually prescribed by the attending physician. In addition to CT of the temporal bones, you can undergo CT of the eye orbits.

There are not many indications for use:

  • Traumatic brain injury;
  • Fractures in this area;
  • Anomaly of the inner ear and temporal bone;
  • Oncology;
  • Otosclerosis;
  • Preoperative period;
  • Unknown discharge from the ear;
  • Hearing impairment painful sensations;
  • Neoplasm.

Contraindications

Diagnostics has a number of contraindications:

  • Multiple myeloma;
  • Obesity. Each tomograph has a limitation on the patient’s body weight. Most often, the patient’s body weight should not exceed 160 kilograms;
  • Pregnancy;
  • There are age restrictions. Children under 12 years of age are not recommended to undergo testing;
  • Kidney disease;
  • When diagnosing with the introduction of a contrast agent, the list of contraindications expands:
  • Diabetes;
  • Liver problems;
  • Allergy to iodine, since the contrast contains iodine.

Preparation

Shortly before a computed tomography scan, you need to prepare for it: it is forbidden to eat food for 6 hours before the examination. It is worth taking care of loose clothing in advance that will not cause discomfort during the examination. In some diagnostic centers, such special clothing is provided individually to each patient.

It is important to remove all metal accessories, jewelry, etc. Their presence may affect the quality of the images. Moving or moving during a CT scan is also prohibited, since the images in this case tend to be distorted. Using distorted images, it will be almost impossible to make an accurate diagnosis or simply decipher them.

How they do it

The examination process begins with the patient lying on his back on the movable tomograph table. Then it moves inward, the ring begins to rotate. The doctor goes to another office and watches the entire procedure through the window. Only at the request of the doctor can you move (turn your head left or right). You may need to hold your breath several times.

The tomograph scans the required examination area layer by layer. The entire diagnosis takes about 20 minutes maximum.

During diagnosis, the patient may develop side effects: nausea, dizziness and bad taste in the oral cavity.

MSCT of the temporal bone

Multislice computed tomography (MSCT) of the temporal bone – modern method research. Differs from CT by having an X-ray tube that rotates around longitudinal axis tomograph along a spiral trajectory. MSCT takes a little less time compared to CT.

Contrast

The temporal bones are perfectly visualized without a contrast agent, but for examination of soft tissues it is simply necessary. Contrast improves visualization: makes soft tissue more visible due to the fact that the contrast is quickly absorbed into it.

Decoding and results

After the examination, the sections are given to the patient, who takes them to a radiologist. Deciphering a section takes twice as long: it all depends on the area of ​​examination, the number of images and the detected pathology.

The smaller the pathology, the more difficult it is to decipher. If there are no pathologies, then decoding does not take much time.

Differences between CT and MRI

Computed tomography is an alternative to MRI of the temporal bone. The main and most important difference is the operating principle of tomographs: in computed tomography, the examination is carried out using X-rays, and MRI is carried out using magnetic resonances.

In terms of time, the MRI process takes 2-3 times longer than CT. At the same time, it is strictly prohibited to undergo an MRI if you have metal implants.

The temporal bone is a paired component cranium, which is distinguished by complex terrain and non-standard shape. It consists of three segments, the dysfunction of which leads to irreversible consequences for good health. Requires temporal bone for protection nerve ganglia, hearing aid and a large artery, regulates the work vestibular apparatus. If there are problems in the characteristic zone, a computed tomography scan of the temporal bones is required.

General information about the procedure

CT scan of the temporal bone is a non-invasive diagnostic method that allows you to evaluate the structural and functional elements of the suspected focus of pathology. When using computed tomography, X-rays are sent to the temporal bone, which captures cross-sectional images. The position of the bone structure appears on the screen, the state of neighboring systems and tissues, and suspected mutagenic zones (malignant tumors) are determined.

This diagnostic method can be carried out simultaneously with MRI to clarify the diagnosis, adjust medical prescriptions, allow you to determine the exact treatment regimen, and increase the patient’s chances of recovery. Temple injury is one of the most common pathologies in which clinical examination is difficult. CT and MRI using sensitive equipment show oncological processes, inflammatory diseases, abscesses and infectious lesions, extensive disorders vascular walls and abnormalities in the development of bone structures.

Carrying out MRI in such a clinical picture becomes auxiliary against the background of the main diagnostic method - CT of the temporal bones. This is explained by the fact that the first procedure accurately visualizes soft tissues on the screen, which contain hydrogen atoms and liquid. Since this formula is somewhat different from bone structures, MRI is considered ineffective method when diagnosing bones, and as an alternative it is advisable to use computed tomography. If there is a suspicion of the presence malignant tumors, you can’t do without MRI.

Indications for the procedure

CT scan of the temporal bones is shown in the following clinical pictures:


The doctor prescribes an examination in order to effective treatment, but it is also possible to perform a CT scan for the purpose of effective prevention.

Contraindications to the procedure

CT scans of the temporal bones, like other non-invasive diagnostic methods, have their limitations, the violation of which leads to a sharp deterioration in general well-being and a relapse of the main diagnosis. Thus, restrictions apply to the following pathologies and characteristics of the body:

If CT scan of the temporal bones is indicated for breastfeeding, the child needs to be switched to artificial formula for a short time. Numerous studies have reported that the contrast agent is eliminated from breast milk, penetrates the placental barrier.

In most clinical situations, doctors recommend a CT scan using an iodine-based contrast agent. This is necessary to get a clear picture on the screen and improves the visualization of bone structures. If, even after such preparatory measures, doubts remain regarding the diagnosis, it is necessary to agree to additional conduct MRI.

Preparatory measures and procedure

CT in certain clinical pictures is performed using a contrast agent, which requires preliminary preparation of the clinical patient. 5-6 hours before the procedure, be sure to stop eating, and 1-2 hours before the procedure, it is advisable not to drink at all. It is also recommended to refrain from bad habits, avoid the penetration of toxic and poisonous substances into the body. When a CT scan of the temporal bones is performed without the use of a contrast agent, there is no need for preparatory measures.


The description of the procedure makes it clear that the patient is not in for a difficult test. The procedure lasts 3–7 minutes and requires immobility of the clinical patient. The patient is asked to lie down on a special table, which moves into the internal space of the tomograph. A special ring rotates in a circle above your head, while the couch moves forward. Communication in the tomograph is two-way, so if you feel discomfort, you can report your feelings medical personnel, who watches what is happening through the glass.

If the patient moves during a CT scan of the temporal bones, the image on the tomograph screen will be blurry and unclear. In this case, it is difficult to determine the final diagnosis; further diagnosis is required, and repeated use of this non-invasive method is possible.

Before performing a CT scan of the temporal bones, you need to find out the indications from the doctor, and also ask what the cost of the examination is. On average, the price range varies between 2 - 3 thousand rubles, but it is important to remember that the procedure with contrast will cost much more (but the result is more accurate, the conclusion is informative).

Benefits of the procedure

Computed tomography of any bone structure is different high sensitivity, guarantees the definition pathological process already on early stage.

If MRI studies soft tissues in detail, CT is more appropriate when diagnosing bone structures and durable biological materials.


The method excludes side effects, if you strictly follow all the recommendations. Anomalies occur only if intolerance to iodine, from which the contrast agent is made, predominates in the body.

You can receive a conclusion immediately after the procedure and go with it to the attending physician for a reliable diagnosis and an adequate treatment regimen.

If we compare the cost of the procedure with the price of magnetic resonance imaging, it is an order of magnitude lower and is available to all patients.

Many patients are captivated by the speed of the session, so there is no need to long time remain motionless and suffer mentally.

Before injecting a contrast agent into a vein, the doctor performs allergy tests, thereby eliminating the risk of skin rash and the discomfort that accompanies it.

The list of contraindications is limited, and some clinical pictures(pregnancy, lactation) are temporary.

If the doctor recommended a CT scan of the temporal bones, then you should first find out what such a diagnosis provides, what the results influence, and what the consequences are for the organic resource in a particular case. After such explanations, it is recommended to agree to the examination and not delay visiting the clinic. It is possible that such delay may cost the patient physical activity, life.

The temporal bone is an organ with a complex structure, inside which there are many canals containing tubular anatomical structures– nerves and blood vessels. The temporal bone takes part in the formation of the cranial vault, is the receptacle for the structures of the inner ear - the organ of hearing and balance, and also serves as a support for the articular process lower jaw, is the site of muscle attachment. The structures of the temporal bone are the most difficult to visualize using CT due to the large number of channels and cavities and the complexity of the anatomical structure. It is customary to distinguish three main parts in the temporal bone - the pyramid, the tympanic part and the scales - they are discussed in detail in the reconstruction below.

The image shows a reconstruction (based on a CT scan of the temporal bones). Bright yellow arrows highlight the line of the squamoparietal (temporo-parietal) suture, the arrow of blue color The temporomandibular joint is marked; the green arrow indicates temporomandibular synostosis. Number 1 indicates the zygomatic process of the temporal bone, which together with the temporal process forms the zygomatic arch. Number 2 marks the mastoid process, number 3 – scales of the temporal bone, 4 – parietal bone, 5 – articular process of the lower jaw, forming the temporomandibular joint, 6 – styloid process, 7 – opening where the external auditory canal begins, 8 – body zygomatic bone, 8a – temporal process, 8b – frontal process, 9 – frontal bone. The green asterisk marks the coronoid process of the mandible.

Pyramids of the temporal bones, CT reconstruction, axial section.

X-ray of the temporal bone (according to Schuller). The red arrow marks the external auditory canal (as well as the internal one, layered on it projectionally), the blue arrow indicates the temporomandibular joint, and the orange arrows indicate the cells of the mastoid process and the petrous part of the pyramid, which contain gas when X-raying the temporal bone according to Schüller, are visualized in the form of multiple clearings.


CT scan of the temporal bones, three-dimensional reconstructions in bone mode. In the image on the left, arrows highlight the temporo-parietal suture, number 1 - zygomatic process, 2 - mastoid process, 3 - scales, 4 - parietal bone, 5 - articular process of the lower jaw, 6 - styloid process, 7 - external auditory canal. In the right image (view from inside the skull), arrows mark the petrous part of the temporal bone.

The scales of the temporal bone have a lamellar shape and are located almost parallel to the median plane of the body. Her outside surface rough and slightly convex (here it is attached to the bone temporal muscle), the zygomatic process extends from it to the zygomatic bone, which, together with the temporal process of the zygomatic bone, forms the temporomygomatic synostosis. Together they form the so-called. zygomatic arch. On the lower surface of the zygomatic process you can find the mandibular fossa, which is the articular surface of the temporomandibular joint (limited anteriorly by the articular tubercle).

Sagittal reformations obtained from computed tomography of the temporal bones at various levels demonstrate (from left to right): external auditory canals (should be symmetrical in width, without signs of mucosal edema), internal auditory canals (their width normally ranges from 4-5 mm , and the width on the right and left should be approximately equal, deviation within only 2 mm is allowed), the canal of the internal carotid artery.

CT scan of the temporal bones, axial sections showing (from left to right): the canal of the internal carotid artery; deepening of the intracranial part (bulb) of the inner jugular vein(marked with blue arrows), as well as the internal auditory canals.

In the images, a CT scan of the temporal bones is normal, the pyramids are highlighted in red on the left side, the structures of the inner ear are highlighted in a blue circle, and signs of right-sided otitis media are highlighted on the right when deciphering the CT scan. Notice how thick the outer mucosa is ear canal(marked with a red arrow), and also evaluate the pneumatization of the mastoid cells on the right (marked with a blue arrow) and on the left - on the right the cells are filled with contents, on the left they are airy.

The pyramid contains multiple gas-filled cells, which serve as a kind of resonator, enhancing the perception of sound information. The pyramid is divided into a posterior lateral section (mastoid process) and an anterior internal section, which has a pyramidal shape, its apex is directed inward and anteriorly.

CT image of the internal auditory canals of the temporal bones (left) and normal pneumatization of the mastoid processes (right). The internal auditory canals are symmetrical on the right and left, not widened, their wall is smooth and clearly visible, while unilateral expansion of the internal auditory canal is a sign of a tumor (most often schwannoma, neuroma) of the auditory nerve - this is what a normal CT scan looks like. On the right is a normal variant of pneumatization of the mastoid processes.

The main canals of the temporal bone that are most often analyzed when describing routine computed tomography are the carotid canal, as well as the internal auditory canal. The carotid artery canal originates in the middle parts of the petrous part of the pyramid, opening with the external auditory opening. It goes forward, located slightly in front of the middle ear, bends and opens at the apex of the pyramid. Structures running through sleepy channel– internal carotid artery, veins, sympathetic nerve fibers. It is also possible to visualize the facial canal with CT scans of the temporal bones. It begins at the bottom of the internal auditory canal and opens near the eminence of the pyramid; contains the intermediate and facial nerves, as well as the vessels that supply them.

Temporal bone canals (canals of the internal carotid arteries) on CT (axial section - on the far right image, reformatted images on the left and center). The internal carotid artery (intracanal part) is clearly visible, since the CT scan was performed with intravenous contrast. The canal has a length of about 2.5 cm, a curved course (artificially straightened during reformatting), no changes in the lumen of the vessel inside it are determined. The image in the middle shows a mode that allows you to visualize the canal walls (bone).

Alternative names: computed tomography of the temporal bone with a multi-shot, CT scan of the temporal bones with or without contrast, English: CT Scan of the Temporal Bone.


Computed tomography of the temporal bones is a modern method of radiological diagnosis of ear diseases. Using this method, the doctor has the opportunity to study in detail the anatomical structure of the temporal bones, in the thickness of which there are air cavities and other structures.


The purpose of this examination is to assess the condition of the external and internal auditory canals, their bone walls, as well as the condition of the bone trabeculae and the pneumatic system of the mastoid process. On computed tomograms structures such as the antrum and roof are clearly visible tympanic cavity, apex of the pyramid, semicircular canals, auditory ossicles, canals facial nerve and internal carotid artery.

Indications

Indications for CT of the temporal bones are the following diseases and conditions:

  • complications of acute purulent otitis – subperiosteal abscess, mastoiditis, facial nerve paresis;
  • chronic inflammatory diseases of the middle ear – meso- and epitympanitis, cholesteatoma;
  • hearing loss as a result of any previous illness;
  • suspicion of a tumor of the temporal bone or nearby structures;
  • temporal bone injuries;
  • examination of patients with sensorineural hearing loss in preparation for cochlear implantation;
  • otogenic paralysis and paresis of the facial nerve.

Tomography of the temporal bones is performed for unclear forms of hearing impairment to clarify the diagnosis.

Contraindications

Since tomography is a completely non-invasive method of examination, there are no contraindications to it. It can also be carried out in children.

Preparation for CT scan of the temporal bones

Special training adults and children over 4 years old are not required. For young children, it is recommended that the procedure be performed under medical sedation (sleep).

Technique for CT scanning of the temporal bones

This study is carried out on high-resolution computed tomographs with a tomograph step of 0.5 to 2 millimeters. A polypositional study is used - the patient is examined in axial, coronal and, if necessary, sagittal projections. To perform the scan, the patient is placed in the tomograph in a supine or prone position. The whole procedure lasts no more than 10-15 minutes.


During scanning, the subject should refrain from the slightest movements, and while passing through the scanner (20-30 seconds) should hold his breath and not swallow.


When examining for a suspected tumor or vascular formation of the temporal bone, contrast is performed by intravenous administration of iodine-containing contrast agents.

Complications

The only complications described are allergic reactions for the administration of a contrast agent.

Interpretation of results

A radiologist examines tomograms. It describes the state of the structures of the temporal bones and notes their compliance with average anatomical parameters. The conclusion reflects the presence or absence of pathology.

Additional Information

The accuracy of the examination is significantly affected by the presence of metal objects in the examination area - earrings, chains, hearing implants. Patient movement during scanning may reduce image clarity.


The main advantage of CT of the temporal bones over classical radiography is the excellent opportunity to study the bone and soft tissue structures of the temporal region on images simultaneously. The diagnostic accuracy of this method is more than 90%. It can be used to detect developmental abnormalities internal structures ear, determine the causes of hearing loss.


MRI of the temporal bones can improve the accuracy of CT. These two methods are approximately equivalent and complement each other.

Literature:

  1. Diseases of the ear, nose and throat childhood: manual + CD / Ed. M.R. Bogomilsky, V.R. Chistyakova. - M.: GEOTAR-Media, 2008. - 736 p. (National Guides Series).
  2. Ternova S.K. " Radiation diagnostics and therapy": study. allowance. – M.:GEOTAR, 2010.

The temporal bone of the skull is a complex paired structure containing many anatomical structures, having an intricate relief of many ducts, mastoid cells, auditory ossicles, inner ear, eardrum.

CT anatomy of the temporal bones

Near the pyramid of the temporal bone is the saddle-shaped fossa of the sella turcica, where the important endocrine gland is located - the pituitary gland. The organ regulates the condition of the endocrine glands. Computed tomography (CT) clearly shows the structures of the area, allows you to determine the size of the sella turcica, identify tumors, calcification, and inflammation of the pituitary gland.

The temporal bone is connected to the movable jaw through the temporomandibular joint. Arteries and nerve fibers are located near the area. Damage to the segment causes multiple pathologies, leading to inflammation of the inner and middle ear (otitis media), impaired swallowing, and inflammatory processes inside the esophagus and stomach.

CT scan of the temporal bones is normal

Computed tomography of the temporal bones normally shows the following anatomical structures:

  1. Smooth, clear walls;
  2. Physiological lumen width;
  3. Sclerotic type of cell structure;
  4. Normal pneumotization;
  5. Soft tissue structures of the orifice auditory tube;
  6. Clear visualization of the auditory ossicles;
  7. Normal passage configuration;
  8. Clear, smooth walls.

CT signs of bilateral otitis media with chronic course often combined with increased sclerotization and decreased pneumotization of mastoid cells. Purulent, inflammatory processes in the area are clearly visualized on a computed tomogram.

CT scan of the temporal bones - what it shows

X-ray computed tomography is prescribed to study the bones. Soft fabrics MRI analyzes better.

CT signs of pathology of the tympanic cavity:

  • Assessment of the condition of the walls;
  • Visualization of neural structures;
  • Analysis of vascular formations;
  • Definition of the anatomy of the mastoid process, pyramids.

The middle ear is located close to meninges, facial nerve, large blood vessels. Computer scanning allows you to clearly identify purulent-inflammatory processes in the middle ear (otitis).

Computed tomography of the temporal bones clearly tracks tumor and traumatic injuries. Neoplasms of the vestibular and auditory parts of small sizes do not lead to hearing loss.

Computed tomography shows the degree of mineralization (density of calcium salts), otosclerosis of the inner and middle ear. Deposition of sclerotic tissue is observed in chronic processes.

CT scans reveal tumors - osteomas, fibromas, angiomas. Neoplasms grow slowly and may be accompanied by hemorrhages.

Long purulent otitis media leads to middle ear cancer. The tumor is malignant, has infiltrative growth, is characterized by spread to neighboring areas, and is characterized by a tendency to spread to surrounding anatomical structures and lymph nodes.

Pathology leads to severe pain syndrome head, purulent-bloody discharge, concomitant inflammation of the facial nerve. Timely CT allows one to determine the nosology at an early stage and reduce mortality.

Any pathological changes temporal bone, pyramid, mastoid process leads to disruption of blood supply. High probability of pathology of cerebral microcirculation due to the close location of cerebral arteries. If a purulent clot, thrombus, or embolus enters a vessel, it leads to a blockage of the blood supply and the appearance of a bleeding site.

Indications for CT of the temporal bones:

  • Intra-ear discharge;
  • Decreased hearing and vision;
  • Traumatic lesions of the temporal bones;
  • Pathology of the temporomandibular joint (TMJ);
  • Before surgery.

Tomography of the temporal bone is a fast, informative way to diagnose most types of nosologies.

Which is better: CT or MRI of the temporal region?

The performance of computed tomography and magnetic resonance imaging of the temporal region varies significantly. The difference between CT and MRI is not only in the physical basis of the method. Radiation exposure of tissues in high doses does not allow the repeated use of computed tomography for a short period of time.

Magnetic resonance imaging is harmless to human health in the absence of metal objects in the body. Modern innovative tomographs are capable of tracking even the pathology of bone tissue. The price of the equipment is high enough for peripheral medical institutions to purchase MRI scanners.

Tumor of the jugular glomus on CT of the temporal bones

CT with contrast also allows you to study arteries, veins, nerves, etc. vascular formations, tumors, measure sizes.

CT scan of the pyramids of the temporal bones

The thickening in the middle of the temporal bone, called the pyramid, contains the anatomical structures of the middle and inner ear. The area includes many vessels and nerves. X-ray layer-by-layer scanning of the pyramidal part of the temporal bone allows us to identify tumors, purulent infiltrates, and pathological accumulation of cerebrospinal fluid.

Purulent and bacterial inflammatory processes, bleeding inside the pyramid are well diagnosed after contrast. The procedure involves intravenous administration intensifying drug with subsequent production of layer-by-layer sections. Each tomogram shows the anatomical structures in a section, but with the help of three-dimensional modeling it is possible to create a spatial representation of the object. The picture reveals tiny cavities, internal ducts, plan the course of surgical intervention.

CT scan for otitis

Bacterial inflammation of the middle ear leads to damage to the mucous membranes, accumulation of pus inside the cells of the mastoid process, and the tympanic cavity. Long-term storage chronic inflammation leads to the release of pus to the outside, the appearance of a perforation hole in eardrum. Pathology creates dangerous complications:

  • Hearing loss;
  • Infiltration of the inner ear;
  • Spread of pus through the circulatory system;
  • Destruction of the walls of the mastoid process;
  • Destruction of internal cavities;
  • Thrombosis of the sigmoid sinus;
  • Abscess development;
  • Epidural hematoma;
  • Empyema;
  • Involvement of the auditory ossicles in the inflammatory process with hearing loss.

The conclusion of computed tomography and magnetic resonance imaging often ends with the diagnosis of “mastoiditis”. Misinterpretation arises due to the detection of aseptic fluid inside the mastoid cells, which occurs after a simple exudative otitis media. Mastoiditis can be correctly diagnosed only after detection of inflammatory lesions of the bone septa.

Computed tomography of a child's temporal bone

Presence radiation exposure when using the computed tomography (CT) method, it requires careful attention to the use of examination in a child. Only in the presence of life-threatening diseases, lack of effectiveness from conservative treatment diseases of mesotympanum, epitympanum, hypotympanum, children are scanned according to indications.

Epitympanum – top part tympanic cavity, consisting of the auditory canal, auricle and the tympanic cavity. Inflammatory and purulent processes in the area are clearly identified after examination by an otolaryngologist (ENT doctor). There is no need for computed tomography to diagnose the pathology of the area.

Mesotympanum is the middle part of the tympanic cavity. The area consists of the Eustachian, auditory tube. The area is not accessible to inspection, so the examination is carried out using radiation methods.

The lower part of the tympanic cavity (hypotympanum) can only be studied using a computer scan. The department contains important anatomical structures - three semicircular canals (lateral, posterior, superior), cochlea, vestibule.

Otosclerosis on CT

Hereditary genetic disease– otosclerosis occurs due to metabolic disorders. The exact cause of the disease could not be determined. Morphological changes in pathology are accompanied by proliferation bone tissue with filling the cells of the mastoid process. Resorption is caused by the activity of bone cells - osteoblasts and osteoclasts. Fractured areas are filled with fibers connective tissue. Sclerosis of the inner ear leads to hearing loss (conductive). In young people, the nosology is characterized by the formation of a sclerotic focus near the anterior edge of the vestibule. A novice radiologist does not always detect changes. The process is bilateral, therefore it is accepted as the anatomical norm.

Cholesteatoma on CT scans

Tumor-like formation (cholesteatoma) consists of epithelial tissue, connective tissue fibers located in the middle ear. The danger of the disease lies in the sclerosis of the mastoid cells of the pyramid of the temporal bone. ENT doctors believe that there is no rationality in diagnosing cholesteatoma using CT, since part of the tumor is detected during the examination. Three-dimensional modeling after computed tomography can reveal a small mass in the ear canal at an early stage of development.

On CT, cholesteatoma appears as a soft tissue formation with accompanying bone erosions.

Tomographic signs of cholesteatoma:

  • Location inside the ear canal;
  • Soft tissue formation;
  • Displacement of the auditory ossicles;
  • Erosive defects in the walls of the epitympanum and lateral semicircular canal.

During scanning, additional findings may include other tumors of the temporal bone - hemangioma, osteoma, neuroma, glomus formations.

Price for CT scan of temporal bones

Experts recommend performing tomography of the temporal region after inflammatory processes, skull injuries, hearing loss, or suspected tumors. The price of an examination in Moscow varies from 2500 to 6000 Russian rubles. The wide range is determined by the type of equipment, the qualifications of doctors, and the use or lack of contrast.

The cost of the service includes the need for anesthesia (for the child), recording the results on an optical disk, and the need to obtain a second opinion. Obtaining several opinions from radiologists is required for patients with identified inflammatory processes(chronic mastoiditis, otitis).

Where to get a CT scan of the temporal bone in Moscow and St. Petersburg

Most of the clinics in Moscow and St. Petersburg were brought together by the United advisory center" We invite readers to choose the best diagnostic center close to where you live, close to work. Sorting is carried out according to dozens of parameters. Our partners have licenses, modern equipment, and qualified personnel. The establishments offer not only CT scans of the head, neck and MRI, but also a free preliminary consultation and a second opinion when interpreting tomograms made in other establishments.

There is no alternative to X-ray computed tomography for diagnosing pathology of the pyramids and mastoid cells of the temporal bones. Magnetic resonance scanning is used to determine soft tissue pathology. By turning to professionals, you protect yourself not only from unnecessary exposure, but also from unnecessary financial costs.



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