It is ideal to have a small amount of urine in the bladder.
Ask the patient to try and relax and “bear down” to open the sphincter as the transducer is inserted slowly.Ensure the transducer has a latex free dedicated probe cover with plenty of gel. The highest frequency sector probe 7-12MHz should be used.
The scanning begins in the axial plane. The seminal vesicles are examined initially. As the probe is angled caudally the base of the prostate is seen.
Once the prostate is examined in its entirety in this plane the probe is turned 90degrees in a sagittal plane. The probe is angled from one side across to the other.
A volume is taken by measuring height x length in the sagittal plane and x width in the axial plane and multiply by 0.52.
Look for changes in the contours and echogenicity in each zone.
The patient lies supine. The patient should have a half full bladder . This can be achieved with drinking 500 mls of water 1 hr before the scan if possible is recommended.
The probe is angled approximately 30 degrees caudal using the bladder as a window. Slight compression to ensure the inferior portion of the prostate is not obscured by the shadow artifact from the base of the bladder.