When a doctor suspects a patient has a brain injury, they’ll likely order imaging tests to get a better look at the brain’s structure and evaluate its function. Is it better to use a DTI MRI or a standard brain MRI?
City Wide Radiology offers comprehensive MRI scans in Brooklyn, NY. Below, our team breaks down the major differences between a standard MRI scan and the advanced DTI variety. Learn what each of these imaging tests involves and how they’re used for traumatic brain injury detection.
What Is an MRI Scan?
Medical professionals often order X-rays to detect fractures and bone-related issues. But when they need to take a look at soft tissue and internal organs, MRI scans are the go-to choice.
Magnetic resonance imaging scans are unique from X-rays and CT scans because they don’t involve any radiation. Instead, the machine uses magnetic fields and radio waves to create images. The modality is useful for evaluating different organs, from the heart to the liver.
When it comes to diagnosing brain injuries, research shows that MRIs can be more effective than other imaging tests and potentially improve patient outcomes. One study published in the Journal of Clinical Imaging Science found that hospitalized patients with acute brain injuries who received an MRI scan had a mortality rate of 0.75%. For those who did not receive an MRI scan, the mortality rate was slightly higher at 2.54%.
A smaller study published in the Journal of Neurotrauma found that magnetic resonance imaging was more effective at detecting traumatic brain injuries than a CT scan. According to researchers, 47% of patients suspected of having a TBI had negative findings with a CT scan, yet abnormalities were detected using an MRI scanner.
Understanding DTI MRIs and Why They Matter
Patients can receive a standard MRI to review various organs or soft tissue. A DTI MRI, on the other hand, is specifically used for identifying neural pathways. Advanced diffusion tensor imaging allows for brain connectivity mapping, which is crucial for helping doctors evaluate conditions like traumatic brain injuries, Alzheimer’s disease, and more.
When doctors take a closer look at the wires in your brain, they’re actually referring to nerve fibers called white matter. Water molecules should flow neatly through white matter tracts. If the DTI MRI shows scattered water molecule diffusion, it indicates a change in the brain’s neural pathway integrity.
Key Differences Between Standard Brain MRIs and Diffusion Tensor Imaging MRIs
How are DTI MRIs different from the standard brain scan? They are a bit more advanced, but that’s not the only distinction. Here are some of the most notable differences between the two:
- Imaging components: With a standard MRI, physicians will view the entire brain structure. With diffusion tensor imaging, they look at how water passes through white matter tracts.
- Injuries used to detect: A DTI MRI is ideal for diagnosing more subtle injuries, especially if a standard scan is inconclusive. The standard scan will typically be used to identify more traumatic injuries, such as brain bleeds.
- When they’re ordered: Doctors generally order a basic brain scan first, but then rely on a DTI MRI for further evaluation.
How These Imaging Tests Work Together
One type of MRI is not better than the other. They are both effective at reviewing the brain and diagnosing various conditions impacting your neurological health. That’s why many physicians use them together, particularly when treating patients with traumatic brain injuries.
According to recent CDC data, over 214,000 Americans are hospitalized with traumatic brain injuries annually. If a patient continues to experience symptoms like headaches, dizziness, or poor memory recall, they may need to undergo magnetic resonance imaging tests to monitor their condition.
The standard MRI will check for any obvious damage to the brain’s structure. Even if it looks normal, doctors will likely want to assess white matter tracts with the DTI MRI. This scan may reveal insights into the brain’s connections and potentially explain some of the patient’s symptoms.
What To Expect During an MRI Scan of Your Brain
An MRI is a simple, non-invasive imaging test. If you receive a standard brain MRI, you’ll be asked to lie on a table surrounded by the scanner. A technician will explain the process and help you get into the proper position for scanning.
You must remain still as the scanner produces images of your brain. The entire procedure may take up to an hour. If doctors add diffusion tensor imaging, it may be a few minutes longer. However, it does not require you to move to a different scanner.
City Wide Radiology Offers Diagnostic Solutions in Brooklyn
While physicians may take advantage of diffusion tensor imaging for brain injury detection, standard MRI scans can be incredibly helpful for diagnosing other health conditions. Contact City Wide Radiology if you’re interested in an MRI scan after an accident. Our modern facility includes state-of-the-art imaging technology and friendly technicians to guide you through every step.
Request an appointment today by calling (718) 236-6800. Our doctors accept most insurance plans, including workers’ compensation, no-fault, and PIP (personal injury protection). Same-day appointments may be available.
Frequently Asked Questions
Do you want to learn more about the different MRI scans available? Get answers to common patient questions below.
Are MRI Scans Safe?
Yes, MRI scans are generally considered safe for many patients, since they do not rely on radiation for imaging.
What Is an Open MRI Exam?
An open MRI exam allows patients to undergo imaging on an open scanner. Compared to traditional enclosed scanners, open MRI machines help reduce claustrophobia, which may make patients more comfortable during the process.
When Will a Doctor Recommend a DTI MRI of the Brain?
Doctors may recommend this scan to either diagnose or monitor a patient with a traumatic brain injury, stroke, multiple sclerosis, or other neurological conditions. It is often used in conjunction with a standard brain MRI.
How Long Will an MRI Scan Take?
Whether someone receives a standard MRI scan or a DTI MRI, the process usually takes between 30 and 60 minutes.