Ultrasound Overview

What is Ultrasound?

Ultrasound technology is the application of high frequency sound waves to produce diagnostic images. These images can be used in both a diagnostic and therapeutic manner.

Ultrasound technology is a safe and painless way to see the different tissues of the body. A small device like a microphone called a transducer, sends and receives sound waves that are stored in the machine. The sound waves are analyzed and recorded as a graphic image.

Doppler studies use the same ultrasound application to display motion in an audio (continuous wave Doppler), visual (colour Doppler) or graphical (pulsed wave Doppler) form. This is useful in the study of arteries and veins to detect blood flow.

Medical Diagnostic Sonographers

All of our sonographers are certified under the American Registry of Diagnostic medical Sonographers (ARDMS) and/or the Canadian Association of Registered Diagnostic Ultrasound Professionals (CARDUP). . This means they have:

  • Education in ultrasound and patient skills, including both theory and clinical instruction.
  • A passing grade on ARDMS/CARDUP rigorous examination, which evaluates the intensive knowledge base required to practice sonography.
  • Stay on the cutting edge in both ultrasound technology and patient care skills through ARDMS/CARDUP required continuing medical education program.
  • Practice within the guidelines set by the Canadian Association of Radiologists (CAR), Canadian Society of Medical Diagnostic Sonographers (CSDMS) and the Ontario Society of Medical Diagnostic Sonographers (OSDMS).

Sonographers are trained by one of the following:

  • 3 year total program that requires the completion allied health education program (eg. Nursing, radiology, nuclear medicine) prior to one year of additional specialized ultrasound training in medical sonography.
  • Bachelor’s degree in medical radiation sciences.
  • Physician (generally a foreign trained physician) with an additional 1 year of tull-time theoretical and clinical ultrasound training.

Booking an appointment

Please phone our office at 905-637-6608 or 1-800-263-4275.

You will need a completed referral form (requisition) with patient data, type of examination and doctor’s name and signature or authorized medical practitioner (e.g. Midwife, Nurse Practitioner). This referral form must be presented at the time of the scheduled appointment or the requisition can be faxed to our office.

Ultrasound Examinations & Procedures

There are a vast number of examinations and procedures that are performed in our clinic. These include:

  • Abdominal
  • Doppler Ultrasound
  • Venous Doppler arms and legs
  • Arterial Doppler arms and legs
  • Extremity/musculoskeletal (knees, elbows, shoulders etc)
  • Pelvic/transvaginal
  • Scrotum/Testicular
  • Breast
  • Thyroid
  • Obstetrical
  • Pediatric
  • Transrectal
  • Transrectal biopsies

You can find out more about these procedures by clicking on the links in the left menu.





StL Diagnostic Imaging has partnered with Pocket Health to provide patients with the ability to access their imaging privately and securely online.