acid reflux MRI what to expect

Overview

An MRI (magnetic resonance imaging) for acid reflux is a scan that uses strong magnets and radio waves to create detailed pictures of your stomach and the tube that carries food from your mouth to your stomach (the oesophagus, or gullet). It helps doctors see if there are problems like a hiatal hernia (when part of the stomach pushes up into the chest) or other issues that might be causing your reflux. The scan is painless and does not use radiation.

MRI for acid reflux is not common. It is only used in certain situations when other tests have not given clear answers, or to check for complications like severe reflux disease or to look at the structure of your oesophagus and stomach in detail.

The scan is offered to people with persistent or severe acid reflux symptoms, especially if they have had problems swallowing, unexpected weight loss, or when other tests have not explained their symptoms. It may also be used to plan surgery for reflux.

Symptoms

Common symptoms

• Heartburn – a burning feeling in the chest, often after eating or when lying down.
• Regurgitation – a sour or bitter taste in the mouth from stomach acid coming back up.
• Trouble swallowing or a feeling that food is stuck in the throat.
• Chest pain or pain in the upper belly.
• A chronic cough or hoarseness.

Symptoms in children

• Spitting up or vomiting more often than normal.
• Irritability, especially after meals.
• Poor appetite or trouble gaining weight.
• Coughing or wheezing not related to a cold.

Symptoms in older adults

• Less noticeable heartburn but more chest pain or trouble swallowing.
• Weight loss from avoiding food because of discomfort.
• Persistent cough or sore throat.
• Feeling full quickly or nausea.

Causes

Main causes

• A weak or relaxed muscle at the bottom of the oesophagus (the lower oesophageal sphincter) that normally keeps stomach acid from flowing back up.
• A hiatal hernia – when part of the stomach pushes through the diaphragm into the chest.
• Increased pressure on the stomach from being overweight, pregnancy, or frequent bending or lifting.

Risk factors

• Obesity or being overweight.
• Smoking.
• Eating large meals or eating close to bedtime.
• Certain foods like fatty or fried foods, chocolate, caffeine, alcohol, spicy foods, and citrus.
• Some medicines (such as aspirin or ibuprofen) can worsen reflux.
• Pregnancy.

When to see a doctor

See a doctor urgently if:

• If you have trouble swallowing or it hurts to swallow.
• If you have chest pain that feels different from your usual heartburn.
• If you vomit blood or have black, tarry stools.

Book a routine appointment if:

• If you have heartburn or acid regurgitation more than twice a week.
• If over-the-counter antacids do not help.
• If you have persistent cough, hoarseness, or asthma symptoms that might be related to reflux.
• If you have unexplained weight loss or a feeling of food stuck in your throat.

Diagnosis

Acid reflux is typically diagnosed based on your symptoms. If symptoms are not clear or if you have warning signs like trouble swallowing or weight loss, your doctor may recommend tests. An MRI is one of several imaging tests that can look at the structure of your oesophagus and stomach.

Tests that may be done

• Upper endoscopy (gastroscopy) – a thin, flexible tube with a camera is passed through your mouth to look at your oesophagus and stomach.
• pH monitoring – a small tube or capsule measures acid levels in your oesophagus over 24 hours.
• Barium swallow – you drink a chalky liquid that shows up on X-rays as it goes down your oesophagus.
• MRI scan – uses magnetic fields to create detailed images. You will lie on a table that slides into a tunnel-shaped machine.

What to expect at your appointment

During an MRI for acid reflux, you will be asked to remove any metal objects (jewellery, glasses, etc.) and change into a hospital gown. You will lie on a padded table that moves into the MRI machine – it is a large tube open at both ends. It is important to stay still. The machine makes loud knocking or humming noises; you will get earplugs or headphones. You can talk to the technician through an intercom. The scan takes about 30–60 minutes. You will not feel anything during the scan. Afterward, you can go home and resume normal activities right away. If you are given a contrast dye (to make images clearer), you may feel a cool feeling or a metallic taste for a few moments.

Treatment

Treatment for acid reflux usually starts with lifestyle changes and medicines. If these do not help, or if you have complications, surgery may be an option. The goal is to reduce symptoms and prevent damage to the oesophagus.

Self-care at home

• Eat smaller, more frequent meals instead of large ones.
• Avoid foods and drinks that trigger your symptoms (like fatty foods, chocolate, coffee, alcohol).
• Do not lie down for at least 2–3 hours after eating.
• Raise the head of your bed by 15–20 cm (6–8 inches) with blocks or a wedge pillow.
• If you are overweight, losing even a little weight can help.
• Stop smoking.

Medical treatments

Your doctor may suggest medicines that reduce acid production or help your stomach empty faster. These include antacids (for quick relief), acid reducing medicines, and medicines called proton pump inhibitors that block acid production. Always talk to your doctor before taking any new medicine, even over-the-counter ones.

When is surgery considered?

Surgery may be considered if medicines and lifestyle changes are not working, or if you have a large hiatal hernia causing problems. The most common surgery is called fundoplication, where the top of the stomach is wrapped around the lower oesophagus to tighten the valve. Your surgeon will explain the risks and benefits.

Living with this condition

Living with acid reflux means paying attention to what you eat and your habits. Many people manage well with small changes. Keep a diary of your symptoms and triggers so you can avoid them. Take any medicines as prescribed.

Lifestyle tips

• Eat slowly and chew your food well.
• Do not bend over or do heavy lifting right after meals.
• Wear loose clothing around your waist.
• Manage stress with relaxation techniques like deep breathing or gentle exercise.
• Get enough sleep – try to sleep on your left side if you have nighttime reflux.

Diet and exercise

Aim for a healthy, balanced diet with plenty of fruits, vegetables, and whole grains. Avoid trigger foods. Regular exercise helps with weight management and stress, but avoid vigorous activity right after eating. Walking after a meal is fine.

Mental health and emotional wellbeing

Dealing with ongoing discomfort can be frustrating and may affect your mood or sleep. It is normal to feel worried or stressed about symptoms. If you feel anxious or down, talk to your doctor. There are support groups and talking therapies that can help.

Prevention

You cannot always prevent acid reflux, but you can reduce your risk with a healthy lifestyle. Maintaining a healthy weight, avoiding smoking, and eating a balanced diet can help. Managing stress and not eating too close to bedtime are also important.

Vaccines

There is no vaccine for acid reflux.

Screening programmes

There is no routine screening test for acid reflux. If you have symptoms, see your doctor. They may recommend tests based on your individual situation.

Complications

If left untreated

• Oesophagitis – inflammation of the oesophagus that can cause pain and difficulty swallowing.
• Stricture – narrowing of the oesophagus from scar tissue, making swallowing hard.
• Barrett's oesophagus – changes in the lining of the oesophagus that can increase the risk of oesophageal cancer.
• Chronic cough, asthma, or hoarseness from acid irritating the throat and lungs.

Long-term outlook

For most people, acid reflux can be well controlled with lifestyle changes and simple treatments. Even if you have more severe reflux, it is often manageable. Serious complications like Barrett's oesophagus are less common and can be monitored. With proper care, you can live a full and comfortable life. Always talk to your doctor about any concerns.

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