Why would you need to have an MRI after having a CT scan?

Asked by: Candida Gottlieb MD  |  Last update: October 28, 2023
Score: 4.7/5 (13 votes)

Where MRI really excels is showing certain diseases that a CT scan cannot detect. Some cancers, such as prostate cancer, uterine cancer, and certain liver cancers, are pretty much invisible or very hard to detect on a CT scan. Metastases to the bone and brain also show up better on an MRI.

Why would you get MRI after CT scan?

You might need an MRI after CT Scan after the doctor has suspected any abnormalities and needs further scanning. It can be used to look at most areas of the body. Some parts of the body can be seen better in MRI than in CT scans. MRI has an upper hand in producing clearer and better pictures.

Why would a doctor order an MRI?

An MRI provides a clearer picture of abnormal tissues. It is a better scan for looking at ligaments and tendons, your spinal cord, and other soft tissues. A CT scan can give you a higher-quality picture of bones and is better for diagnosing chest and lung problems as well as detecting some cancers.

Is an MRI something to worry about?

Even though an MRI machine looks intimidating, there is nothing to fear. Getting an MRI exam is a painless, safe and common procedure. For example, according to the International Society for Magnetic Resonance in Medicine, about 10 million patients get MRIs every year.

Is it serious if you need an MRI scan?

Magnetic resonance imaging (MRI) is very safe and most people are able to have the procedure.

CT Scan (CAT Scan) versus MRI: How They Differ

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Is it serious if I need an MRI?

If you're told you need an MRI scan for an important organ like the brain or the heart, you may immediately jump to the worst possible conclusion. But in reality, MRIs are used as a diagnostic tool for a wide range of conditions and can even be used to rule out the serious issues you may be worried about.

How long does it take to get urgent MRI results?

For urgent or emergency MRI scans, the radiologist may review the images and provide a preliminary report within hours or even minutes of the scan.

How quickly will doctor call with MRI results?

If you get MRI results that are bad or serious, your doctor will likely contact you right away. Their priority is your wellbeing and safety and they want to get you the care you need as fast as possible. If your results are not serious, they will be ready within 1-2 weeks.

How long does an MRI take?

MRIs Take 15 to 90 Minutes. MRIs typically take between 15 and 90 minutes. However, scans of different parts of the body have unique time requirements based on the number of images that the MRI machine must capture. Whether or not a contrast dye is needed also affects the time.

Can an MRI tell if a tumor is benign?

MRI is very good at zeroing in on some kinds of cancers. By looking at your body with MRI, doctors may be able to see if a tumor is benign or cancerous.

What not to do before an MRI?

What Should You NOT Do Before an MRI?
  • Maybe Not Eat or Drink. In some cases, you may be asked not to eat or drink before having the MRI scan done. ...
  • Maybe Limit Your Bathroom Trips. ...
  • Always Listen to Your Preparation Instructions. ...
  • Do NOT Keep Metal on Your Body. ...
  • Tell the Technicians About Any Pre-Existing Conditions.

When should I order MRI with contrast?

Bone infections, multiple sclerosis, herniated discs, compressed discs, pinched nerves, tumors on your spine, and compression fractures are all conditions that benefit from an MRI with contrast, which can help your doctor decide your treatment regimen.

Can CT and MRI be done together?

Our team of board certified, fellowship trained radiologists have developed our MRI/CT combo Whole Body Scan protocol, using the strengths of both modalities, to offer a high resolution scan with the lowest radiation dose possible for diagnosis.

What can an MRI show?

The MRI scan is used to investigate or diagnose conditions that affect soft tissue, such as:
  • Tumours, including cancer.
  • Soft tissue injuries such as damaged ligaments.
  • Joint injury or disease.
  • Spinal injury or disease.
  • Injury or disease of internal organs including the brain, heart and digestive organs.

What does an MRI with contrast show?

Contrast can aid in detecting the tumors, determine whether they are benign or malignant, what stage they are at, and whether they have metastasized. Even though a contrast MRI provides extremely valuable information, a physician will not typically order an MRI with contrast unless deemed absolutely necessary.

Will a radiographer tell you if something is wrong?

“Plenty of patients ask, but techs should not give information and should not even react to what they're seeing on the image,” Edwards said. “They aren't doctors, and while they do know how to get around your anatomy, they aren't qualified to diagnose you.”

Why can't I drink water before an MRI?

Also, to avoid potential aspiration issues while lying flat, you'll also want to avoid eating and drinking for at least two hours before your scan.

How long will a stroke show up on an MRI?

Summary. An MRI can show signs of a stroke years or even decades after the stroke happens. Sometimes, a person may not know they had a stroke until a long time afterward. MRI is the most accurate way to view signs of stroke inside the brain, but a CT scan is often faster and more widely available.

How much does and MRI scan cost?

The national average for a standard MRI scan cost is £395, according to Private Healthcare UK. We offer standard MRI scans from as little as £250, depending on the date and time you book. We ensure to remain affordable when the MRI scan is more complex. View our Live Prices Calendar for an idea of how our prices work.

How soon do doctors receive CT scan results if serious?

You should get your results within 1 or 2 weeks. Waiting for results can make you anxious. Ask your doctor or nurse how long it will take to get them. Contact the doctor who arranged the test if you haven't heard anything after a couple of weeks.

Can I wear a bra during an MRI?

For women, if possible, do not wear an underwire bra (the metal can throw off the magnetic field). Sports bras are usually good and we have hospital gowns to change into if necessary. The clasps on the back of a regular bra are not a problem, but avoid wearing bras that have metal parts on the straps.

What symptoms need an MRI?

An MRI could be vital when you experience searing pain, and other scans do not clearly show the cause. Some symptoms are of concern to doctors, especially if they are accompanied by neck, head, or back pains, including fever, weight loss, body weakness, and numbness.

What blood test is done before an MRI?

A creatinine blood test is required within 30 days prior to the MRI examination for the following people: Patients who are age 70 years or older. Patients who are diabetic (insulin and non-insulin dependent types) Patients who have a history of kidney insufficiency/kidney masses/single kidney.

Will an MRI show nerve damage?

Does an MRI scan show nerve damage? A neurological examination can diagnose nerve damage, but an MRI scan can pinpoint it. It's crucial to get tested if symptoms worsen to avoid any permanent nerve damage. Alliance MRI is located all over the Houston area and provides affordable MRI tests.