In this article:
What Is HSG?
HSG stands for hysterosalpingography. It’s a special kind of X-ray. It helps the doctor see inside your body, including the shape of the uterus and whether the fallopian tubes are open.How it is done:
- A thin tube is placed in the cervix
- A dye is put inside the uterus and tubes
- X-rays are taken
What Is SHG?
SHG stands for sonohysterography. It uses sound waves instead of X-rays. A little bit of salty water is gently put into the womb. A vaginal ultrasound checks the inside of the uterus.Why You Might Need These Tests
If you are, trying to get pregnant for a long time:- Planning for IVF or IUI
- Having repeated miscarriages
- Having unusual bleeding
How SHG and HSG Are Different
| Feature | HSG | SHG |
| Uses X-rays | Yes | No |
| Uses sound waves | No | Yes |
| Uses dye | Yes | No (uses saline) |
| Pain level | Can be painful | Less pain |
| Radiation | Yes | No |
| Can see fallopian tubes | Yes | No |
| Can see inside uterus clearly | Not very clear | Very clear |
What Doctors Found in Studies
According to medical studies: SHG finds problems in the uterus more often than HSG. SHG is more accurate for:- Polyps
- Fibroids
- Uterine scars
- Septum (a divide inside the uterus)
Benefits of SHG
- Better accuracy: Finds more real issues
- Less pain: Saline is gentler than dye
- No radiation: Safer, especially if done many times
- Good for uterus check: Helps doctors plan treatments like hysteroscopy better
When HSG May Still Be Needed
- If your doctor wants to check if the fallopian tubes are open
- To check if the dye moves freely into the abdomen
What You Should Do
- Talk to your fertility doctor
- Ask what test is better for your condition
- Share your full medical history
- Let your doctor know if you have pain or heavy bleeding during periods
Important to Remember
- These tests should be done during the early part of your cycle (usually Day 5 to Day 11)
- You must not be pregnant during the test
- Mild cramping may happen after the test
Possible Side Effects
Both SHG and HSG are generally safe. But you might feel:- Cramps
- Light spotting
- Slight dizziness
- Heavy bleeding
- Fever
- Bad pain
Tips Before and After the Test
Before the test:- Try to schedule the test between Day 5 and Day 11 of your cycle (after your period ends).
- Do a pregnancy test before the procedure to be safe.
- Take a light meal before the test.
- Wear loose, comfortable clothes.
- Carry a sanitary pad with you in case of spotting.
- If your periods are painful or make you feel nervous, it’s okay to talk to your doctor.
- Ask your doctor if you can take a pain tablet before the test.
- Try to stay calm and breathe slowly.
- Tell your doctor right away if you feel sharp pain.
- You may feel light cramps or spotting; this is normal.
- Rest for a few hours if needed.
- Avoid heavy exercise or intercourse for 1–2 days.
- Drink water and eat something light.
- Call your doctor if you get a fever, heavy bleeding, or severe pain.
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FAQs on Why Sonohysterography Might Be Better Than Hysterosalpingography to Check Uterus Health
- Is SHG painful?
It may cause mild discomfort, but it is usually not very painful. - Is it possible to detect blocked fallopian tubes using a sonohysterogram (SHG)?
No, SHG mainly checks the uterus. HSG is better for tubes. - Do I need to take any medicine before these tests?
Some doctors suggest pain medicine. Always ask your doctor. - Are there any risks?
Risks are low. But infection or allergy to the dye (in HSG) is possible. - How long do these tests take?
Both tests usually take around 15 to 30 minutes to complete. - Do I need rest after the test?
You can return to normal work the same day, unless your doctor tells you otherwise.