Student Experience: Karin M. Ozowski, RDCS (PE)

“I had always been sitting behind a desk and answering phones, both in corporate and medical offices, but I wanted to be in a hands-on medical field. I enrolled in online classes at Dallas College in 2004 and worked through the basics. I began looking at El Centro’s allied health programs, and Cardiac Sonography just grabbed me. I mean, you’re sitting there watching a heart pump in real-time! 

“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. Our program director, Cathy Carolan, gave us great guidance — she's so enthusiastic and loves what she does so much that she gets other people excited about being cardiac sonographers. 

“I worked at Children's Medical Center for four years, where I gained experience in many different environments. I performed echoes in the Operating Room (OR), the Emergency Room (ER), the Heart Catheterization Lab, the Neonatal Intensive Care Unit (NICU), the Cardiovascular ICU and the Cardiology Clinic. Each area had different requirements for the set-up of the echo machine, the type of study done and the urgency at which the study was done. It took critical thinking skills to evaluate the situation and adapt to each situation individually.

“In 2015, I had the opportunity to change jobs and begin working in a private practice office. Although I am still performing pediatric echocardiograms, a private practice office requires a new skill set. I have the opportunity to work closely with the cardiologists and medical assistants in our main office at Medical City and in our satellite clinics in other smaller outlying areas. Working in the satellite clinics requires the doctor, the medical assistant and the echo technician to work closely as a team to keep the patient flow moving smoothly. I have learned even more in this setting because I have the opportunity to sit with the doctors and discuss the echo findings on interesting cases. 

“After years of sitting behind a desk, I now look forward to going to work every day!”

Karin Ozowski earned a Pediatric Cardiac Sonography associate degree in the program’s first graduating class at El Centro in May 2010. She also worked as an echocardiographer at Cook Children’s Medical Center in Fort Worth for a year. She is a registered diagnostic cardiac sonographer with certification in pediatric echocardiography.


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Gabriel Aguilar

Gabriel Aguilar

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“I always wanted to be a scientist when I was a kid, so working in a lab has kind of fulfilled that dream. The faculty in both programs were great, really up-to-date with their information and very knowledgeable in their field of work.”
Medical Laboratory Technology
Dongho Kim

Dongho Kim, MLT(ASCP)BB

Medical Technologist Carter BloodCare at Medical City Dallas
“Time just flew, and I finished the program successfully. I was also named Medical Laboratory Technology ‘Student of the Year.’ I passed the ASCP certification test with a very good score and got a job where I did a clinical rotation.”
Medical Laboratory Technology
Diane Roberts

Diane Roberts, RVT

Registered Veterinary Technician Angel Veterinary Center Flower Mound
“Even though I had a lot of experience working with animals in a kennel situation, I began to learn why veterinarians do certain things the way they do. The program really teaches you a lot.”
Veterinary Technology
Denita Landsaw

Denita K. Landsaw, RRT

Respiratory Care Practitioner Children’s Medical Center of Dallas
“What interested me in the Respiratory Care program was the ability to start a professional career that has direct ‘one on one’ patient care in a field where the demand for skilled professionals is escalating. The education I received has provided the ‘bridge’ I needed for a better future for myself. It has opened many doors and brought more options and opportunities into my life than I ever thought possible.”
Respiratory Care Program
Karin Ozowski
Karin M. Ozowski, RDCS (PE)
Registered Pediatric Cardiac Sonographer Pediatric Heart Specialists

Cardiac Sonography
School of Health Sciences
Updated September 4, 2026