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David Guadiz, RT(R)

“I just really wanted a career change after working as an electrical engineer for 15 years and being stuck in a cubicle for 12 hours a day. I wanted a stable job with more flexible hours, something hands-on and with more interaction with people. 

“The best thing about the Radiologic Sciences program was the combination of both textbook and hands-on education. It really got me prepared for being a tech — in my graduating class, we all did well in clinicals and passed the registry.

“All of the students developed close relationships with each other and our faculty. The personal attention and pride that faculty members Christi Carter and Valerie Martin took in us was incredible; they really wanted us to succeed. 

“I use the skills I learned in this program every day on the job, as far as X-ray technology goes — although I did have to learn CT on the job. I would recommend this program to anyone looking for a career in the medical field — it’s a stable job that pays well, and the days go by really fast because you do such a variety of things. There are so many different career paths you can take in this field.” 

David Guadiz works weekdays at Lake Pointe Imaging Center in Rowlett and weekends at Baylor Medical Center-Frisco, doing CT scans of all parts of the body as well as X-ray and bone density tests.

An electrical engineer before changing careers, he had earned a bachelor’s degree in electrical engineering from Iowa State University before earning an associate degree in Radiologic Sciences in December 2005.


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Myriah Stevens

Myriah Stevens

Radiologic Technologist Parkland Memorial Hospital of Dallas
“When a patient who is in pain, upset or nervous tells you that you made them feel better or just simply tells you 'thank you' with a smile, it makes your hard work worth it. That is the reason I am in this field, and that is what will keep me in it forever.”
Radiologic Sciences
Kristy Sweeney

Kristy Sweeney, RDCS

Registered Diagnostic Cardiac Sonographer, UT Southwestern University Hospitals, and Adjunct Faculty, El Centro Diagnostic Medical Sonography
“My experience at El Centro was wonderful. The program included online classes plus clinicals three or four days a week. We had the flexibility to do our homework at our own convenience, either doing a little every night or doing it all over the weekend, whatever worked best for us.”
Diagnostic Medical Sonography
Sarah Taylor

Sarah Taylor, A.A.S. (ADN), RN

Registered Nurse, Adult Oncology Unit Medical City Dallas
“The best part of my education was the nursing staff. They are just so caring and supportive. They’re there to make sure you get all of the help and support you need. The most important thing I learned is that you’re never too old to set a goal and achieve it.”
Nursing
Shawn Terry

Shawn Terry, B.A., RRT, RCP

Respiratory Care Practitioner, Parkland Health and Hospital System Adjunct Faculty, El Centro Respiratory Care Program
“Respiratory therapists are not just technicians trained to deliver treatments and therapies with different types of equipment. We have to truly comprehend a wide range of topics and how they relate to a patient’s condition.”
Respiratory Care Program
David Guadiz
David Guadiz, RT(R)
CT Technologist Lake Pointe Imaging Center and Baylor Medical Center-Frisco
Radiologic Sciences
School of Health Sciences
Updated September 16, 2025