Sean Marius Mahan, MD
Radiologist | Diagnostic Radiology
2572 W State Road 426 Suite 2032 Oviedo FL, 32765About
Dr. Sean Mahan is a radiologist practicing in Oviedo, FL. Dr. Mahan specializes in diagnosing and treating injuries and diseases using medical imaging techniques such as X-Rays, magnetic resonance imaging, and computed tomography exams. In 1996, he attained board certification in diagnostic radiology through the American Board of Radiology. Radiology is a medical specialty that uses medical imaging to diagnose and treat diseases within the human body. As of April 1, Dr. Mahan is opening a new center, The Radiology Science Institute. Dr. Mahan is available for expert witnesses and is one of the top expert witnesses in the state.
Sean Marius Mahan, MD's Videos
Education and Training
Medical College of Virginia Medical Degree 1991
Board Certification
American Board of Radiology: Radiology
Provider Details
Sean Marius Mahan, MD's Expert Contributions
Do you lose your hair with radiotherapy?
Hair loss is typically related to chemotherapy, which can make your hair brittle, causing it to "break" and fall out. Radiation therapy is usually focused on a single area, and it will usually NOT cause general hair loss, unless the beam of radiation is directly aimed at an area where you have hair. Then it may damage the hair cells just in that location. There is another type of radiotherapy where you are giving a pill that contains radioactive material to ingest. This is how we often treat thyroid conditions. This type of radiation also does not typically cause hair loss. READ MORE
Can you wear clothes during radiation?
There are several types of radiation treatment. Your son should just wear normal clothes. If they need him to take something off for the procedure, they will give him a gown or scrubs to wear. Radiation will not affect his clothes at all, and it will be fine to wear his clothes if they allow him. READ MORE
Where do you stand during fluoroscopy?
Fluoroscopy is basically the same thing as making a video with your cell phone, except that it uses a fluoroscopic camera that takes a video of what you look like on the inside using X-rays. Just like any other video, we can take a picture of you standing up, sitting down, or lying down. READ MORE
Can you have a CT scan with dental implants?
Yes. Dental implants are not a contraindication to getting a CT scan, and they are not a problem at all. READ MORE
Does chemo and radiation treatments shorten your lifespan?
I would say that chemotherapy and radiation treatments are two types of medical treatment that come with risk. They are typically used to treat very severe diseases. In medicine we measure treatments and diseases, and we do a "risk: benefit analysis." If the risk outweighs the benefit, then the treatment is worth it. As these two treatments are used to treat very serious and often fatal diseases, such as cancer, you could say that these treatments actually extend the lifespan of patients with these diseases. So the answer is not simple. These treatments do come with a risk, and then can shorten the lifespan of a person who does not have the diseases for which they are meant to be used. However, for people who have the diseases that they are meant to be used for, they can extend these patients' lifespans. READ MORE
Can an x-ray show brain swelling?
No. X-ray has no ability to see brain swelling at all. If you want to see brain swelling, the best imaging tests are either CT scan or MRI scan, depending on the patient's situation. READ MORE
Does an x-ray show muscle damage?
No. Sometimes X-rays can show evidence that a muscle might be injured, but you really need a much more sophisticated imaging study to see muscle damage. The best imaging study is MRI, which shows muscles the best. READ MORE
Can a CT scan be harmful to an unborn child?
In general, getting a CT scan should be avoided in a pregnant woman, especially in the first trimester. Fortunately, we have good alternatives, like MRI, which is considered safe during pregnancy at all stages. A patient should ask their doctor if they can get an MRI instead. If not, they may be able to wait till the delivery to get their CT scan. Also, there are some diseases where we need to find an answer because there is a serious situation where we need more information that may affect the mother or baby's health. In those instances, the benefit of getting a CT scan may outweigh the risks. However, those instances are unusual, and should be treated on a case by case basis. Here is the link to the ACR guideline that states that MRI is safe during pregnancy at all stages: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwikmbfOhKPrAhVjkuAKHYyzDhMQFjABegQIDBAD&url=https%3A%2F%2Fwww.acr.org%2F-%2Fmedia%2FACR%2FFiles%2FPractice-Parameters%2Fmr-fetal.pdf&usg=AOvVaw0JCdORdWDny_Hk9sZ4JIS- READ MORE
Brain MRI?
Without having seen your MRI, it sounds like there are "white matter lesions." White matter lesions can be normal in a person, and you get more and more of them as you get older as part of the normal aging process. However, they can also be a sign of something bad going on. Certain disease cause white matter lesions that are very bad, like cancer and multiple sclerosis. What they sometimes do in these cases is repeat the MRI scan, but this time they do it with contrast to see if any of the white matter lesions "light up." Certain disease light up with contrast, like cancer, infections, and active multiple sclerosis lesions. They are repeating this scan WITH CONTRAST to make sure you don't have any lesions that "light up." If they don't light up, then that's good. But the only way to know for sure is to do the scan, so it is important to get the scan. READ MORE
How do you stay calm during a CT scan?
With today's CT technology, most scans can be done with a "helical technique," which allows us to do the CT scan in 30 seconds. So you only have to remain calm for 30 seconds - which I realize might be difficult for some people, especially if they are using a contrast injector that is also injecting you with contrast. If you ask the referring doctor for a prescription of an anti-anxiety drug, such as Valium or Xanax, they might be willing to prescribe you the drug to help you get through the scan. Alternatively, perhaps listening to music during the scan may help. Many places will allow you do that. If these don't help, just try to hold still for the 30 seconds of the scan. It will be over before you know it. READ MORE
Are CT scans claustrophobic?
CT scans generally don't have to put a whole person in a hole at the same time, so people with claustrophobia generally do well with CT scans - which is different than MRI, which has a much greater problem with claustrophobia. Also, since CT scans can be done in 30 seconds, most people can tolerate going through the CT scanner, since it is less than a minute. I have seen people with such severe claustrophobia that they could not go through the CT scanner, but this is extremely rare. I have only seen in twice in my 30 year career, but certainly it can happen. READ MORE
Faculty Titles & Positions
- Lecturer University of Central Florida -
- Team Radiologist Orlando Predators -
Fellowships
- Georgetown University Medical Center
Internships
- Medical College of VirginiaDiagnostic Radiology
Fellowships
- Georgetown University Medical Center
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Get to know Radiologist Dr. Sean M. Mahan, who serves patients in Winter Springs, Florida.
Dr. Mahan, a renowned radiologist, is the President of EliteRad Radiology Services, a national radiology practice in Winter Springs, Florida. He performs full time radiology duties, including the interpretation of MRI, CT, ultrasound and X-ray.
“EliteRAD partners with hospitals, medical groups, imaging centers, and physicians who require remote off-site interpretations of diagnostic imaging studies and completely fulfills these needs. EliteRAD implements its expertise to configure, install, and maintain the technology, hardware, and software to provide fast and accurate interpretations of the most advanced radiology examinations. Using ONLY U.S. trained and board certified physicians, EliteRAD will provide all the components you need to bring your imaging facility up-to-date with rapid and decisive reporting with state-of-the-art interpretations” as stated on the website.
In his current capacity, Dr. Mahan is working as a full-time radiologist for radiology centers across the state of Florida, as well as in other locations in the United States. He also lectures at the University of Central Florida, teaching radiology and clinical correlation to the doctors of physical therapy students; and serves as the team radiologist for the Orlando Predators.
He has served as a forensic radiology expert witness for both plaintiff and defense on numerous radiology cases that include medical malpractice, product liability, and personal injury. He is available for expert radiology consultation, review of studies, medical records and depositions, as well as providing deposition and trial testimony. His specialty areas include second opinion reporting.
Upon graduating with his medical degree from the Medical College of Virginia in 1991, Dr. Mahan went on to complete his internship and residency in diagnostic radiology at the same educational venue. He then completed a fellowship at Georgetown University Medical Center.
In 1996, he attained board certification in diagnostic radiology through the American Board of Radiology, which is a not-for-profit physician-led organization that oversees the certification and ongoing professional development of specialists in diagnostic radiology, interventional radiology, radiation oncology, and medical physics.
The doctor’s previous hospital affiliations include Orlando Regional Medical Center, where he served as the Director of the Radiology Department for multiple hospitals within that system. Dr. Mahan was also the Chairman of Central Florida Radiology and Drew Medical, the largest outpatient radiology practice in central Florida.
Radiology is a medical specialty that uses medical imaging to diagnose and treat diseases within the human body. Radiologists are medical doctors who specialize in diagnosing and treating injuries and diseases using medical imaging procedures, such as exams and tests, X-rays, computed tomography, magnetic resonance imaging, nuclear medicine, mammography, positron emission tomography, and ultrasound.
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