Which imaging modality uses sound waves to create an image?

Question

Question

Answer 1

Correct Answer: Ultrasound

Rationale:

Ultrasound is an imaging modality that uses high-frequency sound waves to produce images of structures within the body. It is widely used in medical diagnostics to visualize muscles, tendons, and internal organs, and to monitor fetal development during pregnancy.
The procedure involves a device called a transducer, which emits sound waves that penetrate the body and bounce off internal structures. The returning echoes are captured by the transducer and converted into real-time images on a monitor.
Ultrasound is non-invasive, does not use ionizing radiation, and is generally considered safe for most patients, including pregnant women.

Explanation of Other Options:

MRI

Rationale: Magnetic Resonance Imaging (MRI) uses strong magnetic fields and radio waves to generate detailed images of organs and tissues within the body. It does not use sound waves and is particularly effective for imaging the brain, spinal cord, and joints.

CT

Rationale: Computed Tomography (CT) uses X-rays to create detailed cross-sectional images of the body. The procedure involves taking multiple X-ray measurements from different angles and combining them using computer processing to produce a 3D image. CT scans are useful for detecting tumors, infections, and bone fractures.

PET

Rationale: Positron Emission Tomography (PET) involves the use of radioactive tracers to visualize metabolic processes in the body. It is commonly used in oncology to detect cancer and monitor its progression, as well as in cardiology and neurology.

Conclusion:

Among the given options, Ultrasound is the imaging modality that uses sound waves to create images. It is widely used because it is safe, non-invasive, and provides real-time imaging, making it an essential tool in various medical fields.