When the Texas and New Orleans and Angelina and Neches River railroads were built around the turn of the century, other new towns sprang into life, including Garrison and Appleby. The construction of the railroads also spurred the development of the lumber industry, which emerged at the end of the nineteenth century as one of Nacogdoches County's most important industries.
Echo technicians are ultrasound technicians who have specialized in using echocardiogram technology to produce images of patient's hearts. This field requires an associate's degree in medical sonography, and further specialization within the field is possible.
An ultrasound technician is a Diagnostic Medical Sonographer. An ultrasound is a form of medical imaging that uses penetrative sound waves to produce images of a patientâs insides. The images produced is used to diagnose diseases and for other purpose such as obtaining an image of your unborn baby. The technician applies gel over the area to be scanned so the sound waves can produce an image of the inside of the body. 2  They operate the imaging machines to obtain images of the inside of the patient. 3  They analyze images to check for errors and quality. 4  They can also make initial determination for physicians.