ITGSS Certified Technical Associate: Emerging Tech Practice Test

What happens to the quality of ultrasound images when using harmonic imaging?

1. The quality is reduced

2. The quality remains the same

3. The quality is enhanced

4. The quality becomes variable

The correct answer is: The quality is enhanced

Harmonic imaging significantly enhances the quality of ultrasound images due to the way it takes advantage of the nonlinear propagation of sound waves through tissue. In this technique, the ultrasound machine emits primary (fundamental) frequency waves but receives and processes the higher frequency harmonics that are generated as the waves interact with different types of tissues. This approach leads to several benefits: 1. **Improved resolution**: Harmonic imaging provides images with greater clarity and detail because the harmonics can create a more focused image of the anatomical structures. This results in better visualization of small or subtle features that might not be as visible with standard imaging techniques. 2. **Reduced artifacts**: This technique significantly diminishes common artifacts, such as side lobes and reverberation, which can obscure diagnostic information in traditional ultrasound. By focusing on the harmonics, which are less affected by these phenomena, the resulting images are clearer and more useful for clinical interpretation. 3. **Better contrast**: Harmonic imaging tends to improve the contrast between different types of tissues, enhancing the overall diagnostic quality of the images. In summary, the implementation of harmonic imaging in ultrasound clearly leads to enhanced image quality, making it a preferred method in various clinical applications.