How does an ultrasound scan work?
Ultrasound scans work by using a small probe (transducer) which is placed on the skin and emits high-frequency sound waves, these bounce back (echo) off the different body tissues back to the probe and are recorded by the machine. Various tissues, fluid, gas and bone reflect these sound signals differently. Hard materials such as bones are very reflective of the ultrasound sound waves, whilst gas reflects little of the ultrasound waves. In diagnostic scans, the ultrasound is usually between 2-18 Megahertz (Mhz) This title does not make sense.
Musculoskeletal Ultrasound: These scans look at muscles, cartilage, tendons, and ligaments for damage, swelling, or inflammation. Swollen or painful joints can benefit from ultrasound scans to help determine the reason for the inflammation without having to have an X-ray. Ultrasound scanning is also done in real time, so the joint can be moved during the examination to get further information to aid the diagnosis.
Abdomen Ultrasound: An Abdominal Ultrasound scan images the liver, spleen, kidneys, pancreas and spleen, and aorta – a major blood vessel from the heart supplying a large proportion of the body.
Common Q&A about Ultrasound Scan
An ultrasound scan is a medical imaging technique that uses high-frequency sound waves to create images of structures inside the body. It helps doctors examine organs, tissues, and monitor fetal development during pregnancy.
Yes, ultrasound is considered very safe. It does not use ionizing radiation like X-rays. The sound waves used are non-invasive and pose no known risks when used appropriately by healthcare professionals.
Yes, ultrasound is considered very safe. It does not use ionizing radiation like X-rays. The sound waves used are non-invasive and pose no known risks when used appropriately by healthcare professionals.
Ultrasound scans can detect a variety of conditions, including abnormalities in organs like the liver, heart, kidneys, and thyroid. It is also commonly used in obstetrics to monitor the health and development of a fetus during pregnancy.
Preparation depends on the type of ultrasound. For abdominal scans, you may need to fast for a few hours, while pelvic scans often require a full bladder. Your healthcare provider will give specific instructions based on the scan type.
Most ultrasound exams take between 15 to 30 minutes, although some may take longer depending on the complexity of the area being examined.
Ultrasound is a painless procedure. However, you might feel mild discomfort if pressure is applied, especially when a full bladder is required, or if the transducer needs to be pressed against sensitive areas.
In most cases, the results are reviewed by a radiologist, and a report is sent to your doctor within a few days. Your doctor will then discuss the findings with you during a follow-up appointment.
Yes, you can usually bring someone with you to the appointment, especially for pregnancy ultrasounds, where many partners or family members like to attend.
A 2D ultrasound creates flat, two-dimensional images.
A 3D ultrasound forms three-dimensional images, showing depth and detail.
A 4D ultrasound includes real-time motion, allowing you to see the baby move.
If the ultrasound detects an abnormality, your doctor will discuss the findings and may recommend additional tests or imaging, such as MRI or CT scans, or referral to a specialist for further evaluation.