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🚫 Fasting Required ⏱ 20–40 minutes

🔊 How to Prepare for a
Abdominal & Pelvic Ultrasound

An abdominal and pelvic ultrasound scan uses sound waves to visualise internal organs — liver, gallbladder, spleen, kidneys, bladder, uterus, and ovaries. It requires two specific preparations: a period of fasting and a full bladder. Both are essential for clear images.

✅ Preparation Steps

1
Fast for 4–6 hours before the scan (abdominal portion)
Food and gas in the stomach and bowel significantly reduce image quality. Fat in the gallbladder contracts after eating, making gallstones harder to see. For a gallbladder or liver scan, fasting from midnight is ideal. Water is allowed throughout — it does not impair abdominal imaging.
2
Build a full bladder before arrival
The bladder acts as an acoustic window for viewing pelvic structures (uterus, ovaries, prostate). Drink 1 litre (4 medium glasses) of plain water in the 60–90 minutes before your appointment and do not urinate. Arrive with a comfortably full but not painfully distended bladder.
3
Avoid gas-forming foods the day before
Excessive bowel gas obscures abdominal organs. The day before your scan, reduce beans, carbonated drinks, cabbage, onions, and fried foods. If you are prone to bloating, ask your doctor about taking Buscopan or simethicone the evening before.
4
Wear comfortable, loose-fitting clothing
You will need to expose your abdomen and lower belly. A loose top with separate trousers or a wrapper is ideal. Tight waistbands or one-piece outfits slow down the process and cause discomfort.
5
Bring your referral form and previous scan reports
If you have had previous abdominal or pelvic scans, bring the reports. Comparing current findings with previous images is extremely valuable — especially when monitoring fibroid growth, cyst size, or hydronephrosis.

🎒 What to Bring

🔬 What to Expect

Check-in and preparation
Our sonographer will confirm which organs are being scanned and verify that you have prepared correctly (fasted and have a full bladder). You will be asked to lie on the scan couch.
Abdominal scan
Warm ultrasound gel is applied to your abdomen. The transducer (probe) is pressed gently across your skin. You may be asked to take a deep breath and hold it briefly to bring the liver and gallbladder into view. The pressure is minimal — not painful.
Pelvic scan
With your bladder still full, the probe is moved to the lower abdomen to visualise the uterus, ovaries (women) or prostate and seminal vesicles (men). After this portion, you will be allowed to use the bathroom.
Reporting
The sonographer will usually give you a brief preliminary comment. The formal written report is typically ready within 30–60 minutes at Mascot Healthcare and will be handed to you or sent to your doctor.

🏠 After Your Test

Frequently Asked Questions

Why do I need a full bladder for a pelvic scan?
The bladder, when full, acts as an acoustic window — sound waves travel through fluid easily, giving a clear view of the uterus and ovaries sitting just behind it. An empty bladder allows bowel loops to fill the pelvic space, obscuring the view. For men, a full bladder is needed to see the prostate clearly from the abdominal approach.
What if my bladder becomes too full and I can't hold it?
Tell our sonographer. They will try to complete the pelvic portion quickly. If you cannot hold on, partially emptying and re-drinking is sometimes feasible. Arrive a little early so you are not running from the waiting room directly to the scan couch — a brief wait allows the bladder to fill to the right level comfortably.
Can I eat after fasting for the scan?
Yes — eat immediately after the scan is complete. The fasting is purely to clear the stomach and contract the gallbladder. Once the scan is done, there is no reason to remain fasted. We recommend bringing a snack or planning to eat on your way out.
Will the scan be able to see all my organs clearly?
Most of the time, yes. However, image quality is occasionally limited by: excess bowel gas, obesity, recent abdominal surgery, or patient inability to hold still. If critical structures cannot be visualised adequately, the sonographer will note this in the report and your doctor may request an MRI or CT for further evaluation.

Related Pages

Fibroid Scan StoryGallstones Scan StoryAbdominal Pain in Women

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