Common Tests That Doctors Use to Diagnose and Treat Traumatic Brain Injuries

Traumatic Brain Injury Signs and SymptomsA traumatic brain injury (TBI) can happen to anyone. Even what seems to be a minor bump to the head in a car accident can result in catastrophic health consequences for weeks or years to come—or even for a lifetime. The Centers for Disease Control and Prevention reports that in 2013, about 2.8 million people visited the emergency room for traumatic brain injuries, and TBIs contributed to the deaths of nearly 50,000 people that year alone. Brain injuries are serious. Here’s what you need to know about the signs of head injury, and what tests medical providers can use to help diagnose a TBI after your accident.

Potential Signs and Symptoms of a Traumatic Brain Injury

Diagnosing a traumatic brain injury isn’t always as straightforward as you might think. Not all injuries that can cause a TBI leave wounds that are readily apparent, or even visible at all in many cases. That’s why it’s critical to be examined by trained medical personnel after any accident in which a head injury could have happened, such as a car accident. There are even some signs of a TBI that, to an unqualified observer or a disoriented victim, may not seem to be related to a brain injury at all. Some of the signs of a TBI may include the following:

  • Headache
  • Nausea
  • Vomiting
  • Drowsiness
  • A bad taste or a change in ability to smell
  • Light or sound sensitivity
  • Mood swings, anxiety, or depression
  • Clumsiness, paralysis, or lack of coordination

Other, more telling signs may include mental confusion, slowed breathing and pulse rate, a clear fluid leaking from the nose or ears, or unconsciousness. There are many other potential symptoms, so if you suspect a brain injury, get medical help immediately.

Initial Tests Used to Diagnose a TBI

When you seek medical help after an actual or suspected TBI, medical personnel will perform a number of tests, depending on the severity and the timeframe of the injury. Tests may be for acute diagnosis immediately after the head injury, or to check the status of a TBI victim and determine how well he or she is functioning to determine if further treatment or rehabilitation is necessary. Some of the common tests used after a TBI include:

  • The Glasgow Coma Scale is used to gauge the status of a person with a suspected TBI, both immediately after the injury and during follow-up assessment. The GCS provides for rapid assessment of mental status using eye movements and pupil measurements, the ability to speak and respond to verbal commands, and physical reflexes and response to touch. The doctor will assign a GCS score after assessment, typically between three and fifteen. The lowest GCS score of three indicates coma, and the highest indicates normal function, with varying degrees of mild, moderate, or severe TBI in between.
  • CT or CAT scans are a commonly used imaging technique that uses X-rays to take pictures in many thin “slices” that together form a picture of the skull and brain. CT scans are often used to quickly diagnose brain bleeds (i.e. intracranial hemorrhages), skull fractures, bruised brain tissue and other damage inside the skull. A fast-acting radioactive dye may be injected into the patient during the procedure to help the doctor see certain details.
  • MRI imaging is not usually done immediately after an injury for an emergency diagnosis, but may be done later, or during follow-up examination. MRI imaging takes pictures in thin “slices” like a CT scan, but it uses powerful magnets instead of X-rays. This test checks your brain activity.
  • EEG, or electroencephalogram, is a test that detects electric activity in your brain using small electrodes attached to your scalp. EEGs are often completed alongside an MRI to test for brain activity and whether or not the injured person is more susceptible to seizures. 

It's important to know that CT scans, MRIs and EEGs may come back "normal" even though the patient with the closed head injury knows something is not right. There are other tests that can be performed, including bloodwork and other physical exams, to determine the extent of a head injury. If you continue to experience headaches, changes in attitude, memory loss, or any other problem for more than several weeks after your car accident, you should ask your neurologist to consider more advanced testing. 

Diffusion Tensor Imaging and Other Advanced Testing for Brain Injuries

Sometimes traditional tests, like the ones listed above, are not sensitive enough to detect brain tissue damage, which could allow problems to persist for months without a proper diagnosis. This is why more advanced forms of imaging, like the examples listed below, have been created. 

  • Diffusion Tensor Imaging (DTI) is a more advanced form of imaging that allows doctors to identify, characterize and track brain damage over time. It is similar to an MRI in that it uses magnetic resonance imaging to produce images of the brain. However, DTIs are able to use the diffusion of water molecules to detect the white matter fibers that connect different parts of the brain. These details in these images may help to determine if a brain injury occurred in the brain microscopic structure.
  • PET Scan, or a positron emission tomography scan, is an imaging test that allows doctors to observe how your tissues and organs are working within your body. The test is conducted by injecting a small amount of a radioactive drug, known as a tracer, into your body. The drug is then absorbed by whatever organ is being tested. According to the Mayo Clinic, tracers generally gather in areas where there is high chemical activity, which is often a sign of disease or damage. 
  • Susceptibility-Weighted Imaging (SWI) is also an imaging process that uses magnetic resonance imaging that is highly sensitive to deoxygenated blood. This high resolution scan is helpful in detecting micro-hemorrhaging, shearing, and diffuse axonal injuries in the brain that are otherwise difficult to see in other low resolution scans. 
  • Neuropsychological examination is an examination process carried out by a trained psychologist. This type of testing is often done during the recovery phase, to help determine the degree of long-term injury, what kind of rehabilitation would best treat the TBI, and how well current therapy or rehabilitation is working. Neuropsychological exams include multiple tasks and may involve tests to determine thinking, memory, speech, behavior, personality, and motor skills.

Get Legal Help After Your TBI

No one living in South Carolina should be forced to live with an undiagnosed brain injury. Dealing with the effects of a TBI are hard enough. Being told that nothing is wrong with you simply because the MRI came back normal is not fair nor medically sound. If you or someone you love has been the victim of a TBI after an accident due to someone else’s carelessness or negligence, you may be eligible for compensation.

We focus on helping people who have suffered brain injuries from car wrecks in South Carolina, and want you to consider us a resource in finding the right doctors, tests, and treatment. We have seen far too many people get released by their neurologist simply because the MRI came back negative. If "something has been different since the accident," and you find yourself in need of answers and direction, call me today at (803) 790-2800 or contact us by using the live chat box below.

When you’re ready to speak to an experienced attorney, the Law Office of Kenneth E. Berger is here for you. Although we are based out of Columbia, we've represented victims from many parts of South Carolina, including Charleston, Myrtle Beach, and Lexington. 

 

Kenneth Berger
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Columbia, South Carolina car accident and personal injury attorney dedicated to securing justice for clients