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faq
 


How does MRI work?
How does CT work?
Is the MRI or CT completely enclosed?
Will it be noisy?
Can I bring my own music?
Why do I need contrast?
Can I get contrast if I am breastfeeding?
Can I get contrast if I am taking Glucophage?
What insurance do you accept?
What forms should I bring to my appointment?
Should I bring my prior films?
Do I get films to take with me?
Will I need a driver?
How soon can I schedule my exam?
When should I arrive for my exam?
How long will the exam take?
Do I have to remain still during the exam?
Can I wear my regular clothes during the exam?
Are there any risks with CT or MRI?
Are there any risks with intravenous contrast?
Can I eat before my exam?
When will my doctor get the results?
Will my arthrogram hurt?
Can I have an MRI even though I have metal in my body?

 

How does MRI work?
MRI uses a magnetic field in combination with radio waves to create an image. There is no radiation associated with MRI.
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How does CT work?
CT uses a rotating beam of x-rays to produce very thin images of the body.
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Is the MRI or CT completely enclosed?
No. The high-field MRI's and CT's are open at both ends (at the head and at the feet). The open MRI's are open on all four sides but are closed on the top and bottom.
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Will it be noisy?
The MRI machine does make a low banging sound. However, ear plugs or headphones with music will be provided to each patient to help drown out the noise. The CT scanner sounds like a soft airplane engine and does not bother most patients.
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Can I bring my own music?
You may bring a CD of your choice for your MRI exam.
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Why do I need contrast?
There are two types of contrast: oral and intravenous. Oral contrast is a barium or gastrograffin based drink that is given to most patients receiving an abdomen or pelvic CT. This allows the radiologist to differentiate the small and large bowel from other structures in the abdomen. Intravenous contrast is used for both MRI and CT and is given to patients with certain diseases or suspected diseases. The decision to administer intravenous contrast is determined either by the referring doctor or the onsite radiologist.
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Can I get intravenous contrast if I am breastfeeding?
Yes. However, you cannot breastfeed for 24 hours after the examination.
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Can I get intravenous contrast if I am taking Glucophage?
Yes. However, you may not take your Glucophage for the 48 hours following the examination. You MUST have a blood test with your referring doctor to check your kidney function to make sure it is safe to restart.

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What insurance do you accept?
We accept most insurance, excluding Florida Hospital, ORMC and Health First insurance plans. We also provide no-interest payment plans tailored to each patient in handling the co-payment portion of the insurance plan or for patients who are self-paying.
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What forms should I bring to my appointment?
Please bring your insurance card and the MRI or CT prescription from your referring doctor, if applicable.
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Should I bring my prior films?
If your previous exams were performed at Neuro Imaging Winter Park, you do not need to bring your prior exams. If you have a prior imaging study at an outside institution and it is of the body part being examined at Neuro Imaging Winter Park, please bring them to your appointment. The films will remain at the center until your report has been issued by the radiologist. The films will then be available for pick-up at your convenience.
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Do I get films to take with me?
Printed films or CD are available upon request.
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Will I need a driver?
Only if you are scheduled for oral or intravenous sedation.
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How soon can I schedule my exam?
In most cases, exams can be scheduled the same day.
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When should I arrive for my exam?
We request that patients arrive 10 minutes prior to the exam start time in order to fill out necessary paperwork. If oral or intravenous sedation is scheduled, please arrive 30 minutes prior to the exam start time. Pediatric patients under 50 pounds that are receiving oral sedation should arrive one hour early.
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How long will the exam take?
An MRI may take between 15 and 30 minutes. Occasionally, an MRI may last for 45 minutes if there is more than one body part being imaged. A CT scan takes between 5 and 10 minutes.
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Do I have to remain still during the exam?
Yes. It is extremely important that patients not move during the scan. Any minor movement can make the images unreadable and will require repeating the scan. However, patients will only have to remain motionless for a period of 2 to 7 minutes at a time. Small breaks will be given during an MRI exam to allow patients to relax.
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Can I wear my regular clothes during the exam?
All patients scheduled for an MRI will be provided a hospital gown prior to the examination. Regular clothes or street clothes may result in image artifacts and distortions and are not allowed in the MRI. Patients scheduled for CT may wear regular clothes. However, all metal objects will have to be removed due to image artifacts.
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Are there any risks with CT or MRI?
Since there is no radiation with MRI, there are no reportable risks. However, patients with pacemakers, certain aneurysm clips, metal in the orbits, and other metal implants may not be allowed to have an MRI. These screening questions will be asked at the time of scheduling. CT scans emit x-rays and, therefore, there is a theoretical risk of radiation. However, there have been no definitive studies demonstrating the exact risk or the limit of how many CT scans a patient may have. Often, referring doctors and patients may opt for an MRI instead of a CT for this reason.
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Are there any risks with intravenous contrast?
There are very few reported risks with MRI contrast (Gadolinium). There is a slightly higher risk of allergic reaction with CT (iodinated) contrast. A history of allergies to iodine will be asked at the time of scheduling for a CT scan. Patients with renal failure or poor renal function may not receive CT contrast. A renal function test is required prior to CT for all patients over 65 years of age, patients with diabetes, or patients with a history of renal disease.
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Can I eat before my exam?
You may eat prior to your MRI, unless you are having a MRI of the pancreas or gallbladder. If you are scheduled for a CT scan with intravenous contrast, you may not eat or drink for 2 hours prior. If you are scheduled for oral or intravenous sedation, you may not eat or drink for 2 hours prior. However, pediatric patients may have a few sips of water or juice 2 hours prior and no food 2 hours prior.
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When will my doctor get the results?
Once your examination is completed, the onsite radiologist will be reviewing all of the images and will issue a report the same day or the next morning. The report is then faxed and either mailed or delivered to your doctor's office. If your case is an emergency, the radiologist will speak verbally to your referring doctor as soon as the scan is finished.
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Will my arthrogram hurt?
The arthrogram is similar to a steroid or cortisone injection in the joint. Lidocaine (similar to Novacaine) is used to anesthetize the skin and soft tissues, which greatly reduces the amount of pain. Only mild to moderate discomfort should be felt.
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Can I have an MRI even though I have metal in my body?
Certain types of metal may be unsafe in an MRI machine. Please refer to our MRI screening form to determine your individual safety profile.

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