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About The Burwin Institute
Established 1984


The Burwin Institute was established in 1984 to provide quality correspondence courses in diagnostic ultrasound applications. Burwin courses provide a means for technologists to learn theory in a structured fashion needed to challenge the Registry examinations. It is recognized that various institutions offer short courses and seminars for Registry preparation but many technologists do not have the time or finances to attend these types of programs. Studying by correspondence is a proven and effective method of learning.

Burwin courses are comprehensive and current. As such, they are an excellent way of obtaining continuing education points for Registry maintenance.

All our courses are approved by the Society of Diagnostic Medical Sonographers (SDMS) and accepted for continuing medical education credits or units by the American Registry of Diagnostic Medical Sonographers (ARDMS), American Society of Radiological Technologists (ASRT), Cardiovascular Credentialing International (CCI), Sonography Canada, Society of Vascular Ultrasound (SVU), State of Florida Radiologic Technologists, and state of California Board of Registered Nurses.

Burwin's Authors & Instructors

Chris Harrington - RT(NM), RDMS, RDCS, RVT

Hello! It would be my pleasure to provide some help and instruction through these correspondence courses.

I have been teaching ultrasound both clinically and in the classroom since 1990.

I am presently employed as the Program Coordinator for the Diagnostic Medical Sonography program at Red River College of Applied Arts, Science and Technology in Winnipeg, Manitoba, Canada. I am the author and instructor for the Burwin Institute Sonography Principles and Instrumentation course.

I truly enjoy my job, especially the challenge of teaching Physics and Instrumentation. The mere mention of the word "physics" causes many students to panic. But I believe physics can be fun, understandable, and most importantly, relevant to daily clinical practice. If you can approach physics with an open mind, I know you will surprise yourself.

Denis Gratton - RT(R), RDMS, RDCS

Welcome to all prospective Burwin Institute students. It would be a true honor and pleasure to be your instructor, counsellor, and mentor if you enrol in one of my Burwin courses.

Since the inception of The Burwin Institute in 1985 I have had the good fortune to teach hundreds of correspondence students in a variety of diagnostic ultrasound topics including physics & instrumentation, obstetric & gynecology, and Doppler. It has been very gratifying to see the majority of my students pass with distinction and pride registry examinations in these applications. It's a wonderful feeling to be told "Denis, I would never have done it without you". Hopefully, this will be true of your experience when you register in one of my Burwin courses.

I had the opportunity to learn diagnostic ultrasound imaging when the technology was in its neonatal stage and I am grateful to have experienced the tremendous growth and medical usefulness of this imaging modality. I have been involved in a teaching capacity since 1976 as a clinical and didactic instructor, conference and seminar lecturer, author, and program director. I have always been proud of being a sonographer and continue to enjoy scanning and patient interaction. I am currently performing general ultrasound studies at a busy community hospital in addition to my teaching and administrative duties with The Burwin Institute.

Professionally, I have participated on the board and committees of different organizations including the American Registry of Diagnostic Medical Sonographers (ARDMS), Society of Diagnostic Medical Sonography (SDMS), Canadian Society of Diagnostic Medical Sonographers (CSDMS, now known as Sonography Canada), and the Canadian Medical Association (CMA).

Margaret Corbett - RT(R),RDMS,RDCS,RVT, RMSKS

Hello. My name is Margaret Corbett and I am the author and course instructor for the Burwin Institute correspondence courses in fetal, pediatric and adult echocardiography. My courses are primarily intended to cover the material required to pass the credentialing examinations in these respective areas.

I have worked in ultrasound since 1983 and hold ARDMS registration in Adult and Pediatric Echocardiography as well as Abdomen, Ob/Gyn, Ophthalmology, Vascular Technology, and Musculoskeletal Sonography. I am presently employed full time as Supervisor and Clinical Instructor in a busy private practice. My teaching experience began in 1979 in Radiography.

My introduction to teaching through correspondence was through a series of courses in Quality Control which I wrote for the Canadian Association of Medical Radiation Technologists. Throughout the year, I present registry preparation seminars in adult echocardiography in various cities in the United States and have also taught courses in echocardiography at a local community college. I have been with the Burwin Institute since 1992.

Marie Hadfield - RN, RDMS, RDCS

I started my nursing career working on the high-risk labor and delivery unit at Health Sciences in Winnipeg, Manitoba.I have worked as a nurse sonographer in Fetal Assessment at Women’s Hospital since 1997.

My areas of interest include fetal echo, Rh disease, fetal intervention, Doppler evaluation of growth restriction and monochorionic twin pregnancy.

I enjoy my job very much, particularly the challenge of providing expert family centered care to families whose pregnancy is high risk. I enjoy teaching and have presented both nationally and internationally.

Merle McCann - BA, RT(R), ACR, RDMS, RDCS

Hello. Welcome to the Burwin Institute! I am the course author and teacher for the Burwin Neurosonography courses.

My teaching career began in Radiography in 1973 and expanded into Ultrasound in 1984. I have taught my specialty areas to full-time college students, to graduate students preparing for their Registry examinations and to sonographers and physicians who wished to upgrade their knowledge in these areas.

I sincerely hope upon completion of these courses you will have a similar experience to Kathy T. from PA who wrote : "I wanted to thank you so much for the information given to me through your courses which made the examination so much easier. I learned so much more than I had ever hoped to, and, although some areas were difficult for me to comprehend, I am a much better sonographer today . . . I will be forever grateful that I found out about your courses . . . I felt so well prepared for the examination, and, my grade (87.5%) reflected my knowledge."

Nina Romanova - RDMS, CRGS, MD (IMG, Russia)

Welcome to the Burwin Institute! I am the course author/instructor for the breast ultrasound course and excited to be the newest member of the Burwin faculty.

I am credentialed by the ARDMS and Sonography Canada, as well as a current member of the AIUM.

I am a graduate in international medicine and a certified physician with a specialty in diagnostic ultrasound (Russia).

I have more than two decades of experience in breast imaging and diagnostics, using multiple imaging modalities.

The breast ultrasound course offers students updated and interesting information regarding breast ultrasound. It will expand your knowledge, improve your skills and prepare you for the Registry examination.

Stuart Gibbs - FCSDMS, RDMS, RDCS, RVT, RT(R), BSc

I qualified in 1987 and still find my work interesting, exciting, and challenging. Currently I am the Supervisor of Ultrasound at The Abbotsford Regional Hospital and Cancer Center in British Columbia, Canada.

My interest in ultrasound has extended to serving in professional societies as a board member of The Canadian Society of Diagnostic Medical Sonographers, (now Sonography Canada), and president of The British Columbia Ultrasonographers Society. I am a Fellow of Sonography Canada.

Teaching ultrasound continues to be a rewarding experience for me whether it is presenting at national conferences, provincial society meetings or teaching students in my department. My areas of expertise include Vascular Technology, Echocardiography, Neurosonography, Musculoskeletal Ultrasound, Abdomen, Obstetrics, and Gynecology.

I am sure you will enjoy the Vascular Technology course.