CT (computed tomography) of the skull bones
Computed tomography in the study of the bones of the skull has a high diagnostic accuracy. This is due to the fact that CT is a radiological method of diagnosis, as you know, the bone structures have anatomical contrast for x-rays. That is, this method allows to detect even very small cracks in bones that are not visible with conventional radiography.
Indications for head CT scan with CT
Because computed tomography study of the skull in addition to bones visualized structure of the brain, this method is also prescribed in the following cases:
- if you suspect bruises and concussion, intracranial, EPI — and subdural hematomas;
- brain tumors (primary and secondary);
- in acute violation of blood circulation (ischemic and hemorrhagic strokes);
- in vascular brain pathology (e.g., aneurysms);
- in cases where contraindicated performing magnetic resonance imaging of the head.
When performing computed tomography of the head is contraindicated
It is impossible to conduct the research:
- during pregnancy (x-ray radiation has biological effects, so dangerous to the fetus);
- at the age of 14 years (it is believed that ionizing radiation adversely affects growing and dividing cells, that is, in the first place, it is dangerous for the child’s body).
Attention! CT examination of the skull may be performed to pregnant women and children in emergency cases, when this method of imaging is vital for diagnosis and clarification of the patient’s condition.
When performing computed tomography has a small radiation load on the patient. Therefore, many patients wonder how harmful this research. I must say that if you pass the examination with this method, only according to indications, he will not cause harm to humans.
That can be visualized by computed tomography of the head
The main thing is that in this case radiation diagnostic methods are clearly visible bone structure: the bones of the base of skull, temporal bone, paranasal sinuses. CT allows to determine not only the violation of the integrity of the skull bones, but the nature and the degree of displacement of fragments.
Imaging helps to assess the depth and direction of the wound channel, determines the nature of its contents (air, blood, CSF). This radial imaging technique is able to detect the presence of foreign bodies, especially radio-opaque (e.g., metal fragments or other objects).
Worse visible soft tissue structures: the vascular system, the substance of the brain. That’s why additionally shows the implementation of an MRI to study the structures of the head.
Often CT scan is performed with contrast (this introduces intravenous iodinated contrast media – Ultravist, urografin etc.). It should be noted that the CT scan with contrast medium is contraindicated in patients with hypersensitivity to iodine, and patients with renal failure and severe liver disease.
A scan of the skull via CT
In CT scan images are obtained in several planes, so there is the possibility of constructing three-dimensional models of the scanned area. This is important, especially in complex, multiple fractures of the facial skull. 3D essential before surgery for reconstruction dramaticheski changed the bones of the skull.
Thus, CT in the study of the skull is the most reliable method in the diagnosis of traumatic injuries of the bone structures.
Attention! Radiation exposure the patient receives in this method of imaging, causes some limitations in its use.