Sometime in the past few million years, collapse at the top of the cave and surface erosion created the natural entrance of Carlsbad Cavern. This opened previously hidden underground cave passageways to the world above for the first time.
The Society of Diagnostic Medical Sonography (SDMS) defines sonography as diagnostic medical procedure that uses high frequency sound waves (ultrasound) to produce dynamic visual images of organs, tissues, or blood flow inside the body. This type of procedure is often referred to as a sonogram or ultrasound scan.
An ultrasound technician, or diagnostic medical sonographer, is a highly-skilled professional who uses specialized equipment to create images of structures inside the human bo â¦ dy that are used by physicians to make a medical diagnosis.adiologic Technologists, also known as Rad Tech's or RT's assist the Radiologist physician with the process of imaging and diagnosing illness. The RT is responsible for perfo â¦ rming the image, obtaining the best quality image, and ensuring the patients comfort and safety.