Nov 6, 2015 - PDF The Glasgow Coma Scale (GCS) is the most frequently used tool. Of age which differs from other pediatric coma scales in the following ways: (1). Vector components will be required to allow appropriate comparison of.
Computer tomography of human brain, from base of the skull to top. Taken with intravenous contrast medium., (CT) scanning of the uses a series of of the head taken from many different directions; the resulting data is transformed into a series of cross sections of the brain using a computer program. CT images of the head are used to investigate and diagnose and other neurological conditions, as well as other conditions involving the skull or.; it used to guide some brain surgery procedures as well. CT scans expose the person getting them to which has a risk of eventually causing cancer; some people have allergic reactions to that are used in some CT procedures. Contents • • • • • • Uses [ ] Computed tomography (CT) has become the diagnostic modality of choice for head trauma due to its accuracy, reliability, safety, and wide availability. The changes in microcirculation, impaired auto-regulation, cerebral edema, and axonal injury start as soon as head injury occurs and manifest as clinical, biochemical, and radiological changes. Proper therapeutic management of brain injury is based on correct diagnosis and appreciation of the temporal course of the disease process.
CT scan detects and precisely localizes the intracranial hematomas, brain contusions, edema and foreign bodies. Even in emergency situations, when a head injury is minor as determined by a physician's evaluation and based on established guidelines, CT of the head should be avoided for adults and delayed pending clinical observation in the emergency department for children. Many people visit emergency departments for minor head injuries. CT scans of the head can confirm a diagnosis of skull fracture or brain bleeding, but even in the such things are uncommon and not minor injuries so CT of the head is usually not necessary. Clinical trials have shown the efficacy and safety of using CT of the head in emergency settings only when indicated, which would be at the indication of evidence-based guidelines following the physical examination and a review of the person's history. Is not a routine indication for having brain CT or brain MRI and can be diagnosed by a healthcare provider trained to manage concussions.
People with concussion usually do not have relevant abnormalities about which brain imaging could give insight, and so brain imaging should not routinely be ordered for people with concussion. If there is concern about a skull fracture, focal neurological symptoms present or worsening symptoms, then CT imaging may be useful. MRI may be useful for people whose symptoms worsen over time or when structural pathology is suspected. CT of the head is sometimes used for people who have sudden hearing loss. Outlook 2010 klyuch aktivacii. However when there are not other neurological findings, a history of trauma, or a history of ear disease, CT scans are not useful and should not be used in response to sudden hearing loss.
CT of the head is also used in CT- and for treatment of intracranial tumors, arteriovenous malformations and other surgically treatable conditions. Orbital views for eye-related disorders [ ] Special views focusing on the of the may be taken to investigate concerns relating to the eye. CT scans are used by specializing in treating the eye () to detect (especially metallic objects),,,,, bleeding within the skull (),, changes in the eye, and evaluation of the orbital apex. Comparison with MRI [ ] (MRI) of the head provides superior information as compared to CT scans when seeking information about headache to confirm a diagnosis of,, lesions, cervicomedullary lesions, or disorders. It also does not carry the risks of exposing the person to.
CT scans may be used to diagnose headache when is indicated and MRI is not available, or in emergency settings when hemorrhage,, or are suspected. Provides more sensitivity in the evaluation of the cavernous sinus and the orbital apex. One advantage over a is in the evaluation of intracerebral calcifications.
Cautions [ ] Several different views of the head are available, including,, reformatted coronal, and reformatted images. However, coronal images require the person to their neck, which must be avoided if any possibility of neck injury exists. CT scans of the head increase the risk of, especially for children. As of 2018, it appeared that there was a risk of one excess cancer per 3,000–10,000 head CT exams in children under the age of 10.
See also [ ] • Wikimedia Commons has media related to. References [ ]. National Institute of Biomedical Imaging and Bioengineering. Retrieved 21 November 2018. Welltech 40085 htfb85 manual muscle.