Final answer:
The root/combining form in 'ultrasonography' is 'ultrasono-', which refers to the use of sound waves beyond human hearing to produce images of internal body structures. It is commonly used in medical imaging due to its non-invasive nature, particularly for monitoring fetal growth in pregnancies.
Step-by-step explanation:
The root/combining form in the medical term ultrasonography is ultrasono-, which is derived from 'ultra-' meaning 'beyond', and 'sono' from 'sonus' meaning 'sound'. Hence, 'ultrasono' pertains to sound waves that are beyond the audible range of human hearing. The suffix '-graphy' means 'the process of recording or producing an image,' which in the case of ultrasonography, refers to the process of using ultrasonic waves to visualize internal body structures such as tendons and organs.
Ultrasonography is a vital imaging technique applied in medical fields for examining the body's internal structures. It is particularly used in sensitive situations like monitoring fetal growth due to its non-invasive nature. Despite being operator-dependent and unable to penetrate bone or gas, it is favored for its safety and real-time imaging capabilities.