Why is CT used?
CT scans can detect bone and joint problems, like complex bone fractures and tumors. If you have a condition like cancer, heart disease, emphysema, or liver masses, CT scans can spot it or help doctors see any changes. They show internal injuries and bleeding, such as those caused by a car accident.
What are brain scans used for?
Brain scans produce detailed images of the brain. They can be used to help doctors detect and diagnose conditions, such as tumours, causes of a stroke or vascular dementia.
Why do we use current transformer and potential transformer?
The current transformer and potential transformer (also called voltage transformer) are both measuring devices. A CT lowers the current signals for measurement purposes, while a PT lowers high voltage values into lower ones. The transformers are designed to measure whether power systems are both accurate and safe.
Why CVT is used instead of PT?
The capacitor voltage transformer (CVT) uses a capacitance potential divider and is used at higher voltages due to a lower cost than an electromagnetic PT.
Which scan is best for brain?
MRI scans are very good for looking at the brain and spinal cord and are considered the best way to look for tumors in these areas. The images they provide are usually more detailed than those from CT scans (described below).
Which is safer MRI or CT scan?
The biggest differences between an MRI and a CT Scan is the use of radiation and a magnetic field. An MRI does not use radiation, and a CT Scan does not use a magnet. Meaning, one is safer than the other for some patients.
Can a CT scan miss a brain tumor?
In most cases, a CT scan is sufficient to rule out a large brain tumor. However, in cases where CT scan detects an abnormality or if your doctor thinks that you have enough signs and symptoms which need more detailed scanning, he/she might order an MRI.
Why would my dr order a brain scan?
A brain scan can help your doctor evaluate structures within the brain and how well they are functioning. It may also be used to help diagnose or monitor a number of neurological diseases or disorders, including: Blood vessel abnormalities. Brain tumors or cysts.
What are the 4 types of brain imaging?
Four of the most common types of brain scans are EEG, PET, MRI, and fMRI.
- Electroencephalography (EEG) Electroencephalography (EEG) is used to show brain activity in certain psychological states, such as alertness or drowsiness. …
- Positron Emission Tomography (PET) …
- Magnetic Resonance Imaging (MRI)