Toronto Ultrasound Imaging

Prostate & Transrectal Ultrasound

We perform prostate ultrasound, including transrectal ultrasound (TRUS) examinations, to help assess the prostate and surrounding structures. These exams are commonly requested by urologists and family physicians to investigate elevated PSA, urinary symptoms or follow up on previous findings.

What is transrectal prostate ultrasound?

A transrectal ultrasound uses a small, specially designed probe placed in the rectum to obtain detailed images of the prostate gland. This allows the radiologist to:

  • Assess prostate size and shape
  • Look for suspicious areas
  • Guide biopsy in certain settings (biopsies are performed only when specifically arranged)

Your doctor may refer you for transrectal prostate ultrasound in Toronto to:

  • Investigate urinary symptoms or changes in PSA blood test
  • Evaluate known prostate enlargement
  • Plan or follow up urologic treatment

How to prepare for prostate ultrasound

At Toronto Ultrasound Imaging, prostate / transrectal ultrasound requires specific preparation as outlined on our Preparations page.

  • You will usually be asked to use a rectal enema at home several hours before the appointment, to empty the lower bowel.
  • You may also be asked to drink several glasses of clear fluid so that your bladder is partially full at the time of the exam.
  • Detailed written instructions (including timing) are provided when your appointment is booked.

It is important to follow these instructions closely to ensure clear images and to avoid having to reschedule the exam.

What to expect during transrectal ultrasound

  • You will change into a gown and lie on your side on the exam table.
  • The sonographer or physician will explain the procedure and obtain your consent.
  • A small lubricated probe is gently inserted into the rectum to obtain images of the prostate; most patients feel pressure and mild discomfort rather than pain.
  • The exam typically lasts 10–20 minutes.

After the exam, you can return to normal activities. If a biopsy is done (only when specifically arranged), you will receive additional instructions about activity restrictions and what to watch for.