What is an ultrasound scan?

Think of ultrasound scans and we immediately think of baby scans. Traditional 2D baby scans showing a static image of your baby are routinely offered on the NHS, with one at 12 weeks and a follow up scan at 20 weeks. However, 3D and 4D baby scans have seen an unprecedented growth in recent years.

You know the ones, where you go to a private clinic and your soon to be new arrival is computerised with a moving image projected onto a screen in front of your eyes. You walk away withyour souvenir memory stick or cd (remember those) full of images and videos of your baby, with an increased level of excitement all geared up to the exciting due date.

3D and 4D baby scans are fantastic as they provide greater detail, such as allowing you to see the shape of your babies’ mouth and nose, spot the baby yawning or sticking their tongue out.Likewise, they are used to confirm gender and due dates, but equally they can also help diagnose and provide information about a known abnormality. This can help both parents and doctors to plan for the birth.

However, ultrasound scans usage extends far beyond just baby scans. One other such usage is for MSK scans. These are also known asmusculoskeletal ultrasound imaging andare changing the diagnosis, and treatment of many conditions in different parts of the body.

How does an ultrasound scan work?

Ultrasound is a non-invasive scan which uses sound waves to create images of internal organs, vessels and tissues, including muscles, tendons and ligament. The images produced are used to monitor and diagnose conditions in many parts of the body.

Ultrasound gel is placed on the area of concern and the transducer (probe) is placed on to the gel. Sound waves are transmitted from the transducer (probe). The sonar technology used is the same as that used on ships. The images are produced when the sound waves interact with a structure in the body and is reflected back to a scanner. How the image appears on the screen depends upon the structure the sound waves hits, as each structure has a different pattern of reflection.

Sound waves are measured in frequencies, and different scanners produce sound waves of a specific frequency. The type of scanner, and therefore the type of frequency used depends upon the structure which is being imaged. As the majority of structures examined during a musculoskeletal examination are close to the skin surface (superficial) high frequency sound waves are used.

How is an ultrasound scan performed?

The way the scan is performed depends on the purpose of the examination.

The scanner can be used either externally on the skin, or through the natural openings of the body, such as the vagina. With regards to musculoskeletal examinations all scans are carried out with the probe being placed externally onto the skin.

The water-based gel described above is then spread over the skin, enabling the scan to define the structures as clearly as possible.

As the echoes are continuously produced, therefore the image on the screen is being constantly updated, the scan can show real-time movement.

The person operating the ultrasound scanner known as the sonographer can change the position of the probe in order to look at the structure being scanned from many different angles.

Depending on what is being examined the patient will be asked to lie down, sit down, stand upand/or perform a few movements to help detect or eliminate any pathology (disease or injury)

What are ultrasound scans used for?

Ultrasound scans provides real timeimages of tissues, organs and vessels in comparison to other imaging methods such as CT and MRI for example, and is therefore frequently used to help monitor and diagnose many conditions in many parts of the body.

Ultrasound imaging is used to monitor unborn babies, detect heart problems, assess lumps within the body including lumps within the testicles and lumps in the breast.Likewise, it is also used to examine conditions affecting the organs in a woman’s pelvis – the uterus, cervix, vagina, Fallopian tubes and ovaries.

Specifically to musculoskeletal, ultrasound images can help identify

  • Tendon tears or tendinitis in the shoulder, knee, ankle and foot
  • Muscle tears, strains and pulls throughout the body
  • Epididymal cysts andepididymitis
  • Inflammation or fluid within the joints.
  • Early signs of arthritis
  • Nerve entrapments such as carpal tunnel syndrome
  • Hernias

Ultrasound can also be used to guide medical procedures, such as needle biopsies. This is used when it is necessary to extract sample cells from an abnormal area, so that it can be sent to the laboratory for testing.

How long does a Ultrasound Scan take?

Ultrasound scans can take approximately 15 to 40 minutes, depending on the area of the body being scanned and the number of organs and structures which are being assessed.

Where are ultrasound scans performed?

We have a number of private ultrasound scan clinics and diagnostic centres throughout Greater Manchester, Salford, Bury, Heywood,Bolton, Oldham and Rochdale. Likewise, we also offer a unique home scan service.

Does an ultrasound scan hurt?

An MSK ultrasound scan does not hurt.

It’s not possible to feel the sound waves when they pass from the ultrasound probe and down to the underlying organs and tissues.

Who will undertake the ultrasound scan?

All our scans are conducted by UK fully qualified radiographers and/or sonographers, with UK University qualification.

As an absolute minimum all have a minimum of Post Graduate Certificate in Ultrasound Imaging.

How should I prepare for a musculoskeletal ultrasound scan?

For most musculoskeletal ultrasound scans, no special preparation is required. You should continue with any of your usual medication. Wearing comfortable and loose fitting clothing is also advised.

Are there any side-effects or potential complications?

Because ultrasound scanning does not use any radiation, it is not dangerous, is completely painless and has no serious associated side-effects.

Who will interpret the scan and how will I find out the result?

The scan will be assessed continuously throughout the examination by the radiologist/sonographer conducting the scanwho as mentioned above are specifically trained interpret medical images.

They will discuss the results of the scan then and there with you providing immediate verbal feedback. On occasions further tests, referrals and/or follow-up examinations may be necessary, and the reasons behind this will be explained when the results are discussed with you. For example, a follow-up examination may be required if there is a suspicious finding which warrants further investigation or if there’s a known abnormality that needs to be monitored over time.

Follow-up may also be necessary if the initial view was limited, and therefore additional images are required before a proper assessment can be made.

Within 24 hours of the examination you will be provided with a final written report. If you require, this report can also be sent toeither your GP, healthcare provider or physiotherapist who will then contact you to make arrangements to discuss the results given in the report.