Diagnostic services

At Chelsea Outpatient Centre, we offer patients access to the very latest and most effective diagnostic facilities, whilst focusing on patient care and delivering an outstanding service. Diagnostic appointments are available within 24 hours and many on the same day.

Cardiologists use cardiac MRI to analyse the heart's structure and function; the sanned images can help them decide the best way to treat patients with heart problems.

Cardiac MRI is a common test which is used to diagnose and assess many diseases and conditions including:

  • Cardiac murmurs
  • Congenital heart defects
  • Coronary heart disease
  • Damage caused by a heart attack
  • Heart failure
  • Heart valve problems.

We offer the following heart tests at Chelsea Outpatient Centre:

24 hour blood pressure

Simple, painless test to monitor your blood pressure over 24 hours. You'll be fitted with a blood pressure cuff, which is attached to a small monitor worn around the waist. Your blood pressure will be recorded automatically every hour. The test can diagnose raised blood pressure and assess how your blood pressure could be controlled.

24 hour holter monitor

A holter monitor is a machine that continuously records your heart's electrical activity and checks for any abnormal rhythms. It's either worn for 24 or 48 hours.

48 hour holter monitor

A holter monitor is a machine that continuously records your heart's electrical activity and checks for any abnormal rhythms. It's either worn for 24 or 48 hours.

7 day holter monitor

The heart's electrical activity may be monitored for a longer period of time to help to identify its rhythm during palpitations or dizziness, which may not occur all the time.

Defibrillator check

Simple test to maintain a patient's defibrillator.


An ECG traces the heart's electrical activity. It's a useful baseline test that can help to identify heart problems including changes to the heart rate and rhythm, abnormalities of the heart muscle and damage to the heart from a heart attack.


An echocardiogram uses ultrasound to study the heart's activity, particularly the pumpting and collecting chambers of the heart, the heart valves and the main blood vessels, providing detailed information about the heart's structure and function.

Pacemaker check

Simple test to maintain a patient's pacemaker.

Reveal interrogation

These small, implantable ECG recorders are used for patients experiencing symptoms that occur sporadically, where conventional holter monitoring may not catch an episode. The reveal continuously monitors heart rhythm, taking a snapshot ECG both automatically and when a patient activates the device.

Our digital mammography facilities provide diagnostic services such as breast cancer screening and visualisation. The mammogram scan uses low energy X-rays to pass through the compressed breast during the examination. The departing X-rays are absorbed onto an electronic digital detector which is then displayed on a high resolution computer monitor. Chelsea Outpatient Centre's radiologists can then manipulate the image to better visualise specific breast tumours which might be harder to see on a conventional photographic film.


Magnetic Resonance Imaging (MRI) is used for:

  • Abdominal examination
  • Musculoskeletal examination
  • Neuroimaging
  • Pelvic examination.

An MRI scan uses radio waves, a strong magnetic field and a computer to generate detailed internal images of your body. In simple terms, a magnet encourages the hydrogen protons in your body to all behave in the same way: they are stimulated by a radio frequency pulse which is then switched off, leading the protons to emit extra energy. These signals are received by an antenna and a computer produces an image.

For more information on these services, please see our MRI brochure.

We offer the following respiratory medicine and lung function tests at Chelsea Outpatient Centre:

  • Full lung function
  • Mannitol challenge
  • Reversibility
  • Spirometry.

An Ultrasound Scan is a cost effective, safe, non-invasive examination which is totally free of radiation. At Chelsea Outpatient Centre, this examination is used for:

  • Abdominal ultrasound
  • Breast ultrasound
  • Female Pelvic Ultrasound.

During an ultrasound scan, a probe emits high frequency sound waves that are passed through your body and as these waves are reflected back, the echoes form an image.

For more information on these services, please see our Ultrasound Brochure.

From our diagnostic services at Chelsea Outpatient Centre, our general x-rays are routinely used for:

  • Chest x-ray
  • Skeletal x-ray
  • Urinary tract x-ray.

X-rays use ionising radiation and are the simplest form of imaging.  Known as computed radiography (CR), an image is recorded through an x-ray tube, which is then processed by a computer to produce a visible image.

X-rays are quick to produce and usually involve relatively low doses of radiation.

For more information on these services, please see our X-ray Brochure.

Appointments are held by our expert radiologists, supported by a team of dedicated radiographers.

Referral Forms

For quick, convenient patient referrals to our consultants at Chelsea Outpatient Centre download the relevant referral forms:

The Harley Street Clinic
London Bridge Hospital
The Portland Hospital
The Princess Grace Hospital
Wellington hospital
Harley Street at University College Hospital
Harley Street Queens
The Christie Clinic
Sarah Cannon Research UK
Blossoms Healthcare
Roodlane Medical
Galen Health Partners
52 Alderley Road
The London Gamma Knife Centre at St Bartholomew's
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