Final answer:
Ultrasound and X-ray are two types of indirect instrumental procedures used in medical imaging. Ultrasound uses high-frequency sound waves, while X-ray uses electromagnetic radiation. Ultrasound is commonly used to monitor pregnancies due to its non-invasive nature.
Step-by-step explanation:
Ultrasound and X-ray are two types of indirect instrumental procedures used in medical imaging. Ultrasound uses high-frequency sound waves to create an image of anatomy and physiology without utilizing ionizing forms of radiation. It is commonly used to monitor pregnancies because it is the least invasive of imaging techniques. X-ray, on the other hand, uses electromagnetic radiation to create images of organs and bones, making it useful for diagnosing various conditions.
On the other options given, palatometry and nasometry are techniques used to measure oral and nasal airflow during speech, not for medical imaging. Endoscopy and MRI are both imaging techniques, but they are not indirect instrumental procedures. Endoscopy involves inserting a lighted scope into the body to view organs directly, while MRI uses a magnetic field to generate images of anatomy and physiology.
Videofluoroscopy and CT scan are also imaging techniques. Videofluoroscopy is used to visualize the passage of food and liquid through the digestive system, while CT scan uses computer processing of X-ray measurements to produce cross-sectional views of organs.