Sulphur hexafluoride

Sulphur hexafluoride is a non-flammable, non-toxic, colorless and odorless gas. It is used in medical applications such as MRI scans and X-ray imaging. It is also used in industrial applications such as insulation, welding and circuit breakers. Sulphur hexafluoride is considered to be an inert gas and is not toxic, however it is heavier than air and can cause suffocation if inhaled in large concentrations.

Sulfur hexafluoride is a fascinating substance with a surprising medical application:

Medical use:

• Ultrasound contrast agent: This is its primary use in medicine. It's a contrast agent for ultrasound imaging, particularly for enhancing the visibility of:
  • Blood vessels
  • The left ventricle of the heart
  • Liver lesions

How it works:

• Sulfur hexafluoride exists as tiny microbubbles which are injected into a vein or bladder.
• These microbubbles scatter sound waves from the ultrasound machine, creating a clearer picture of the targeted structures.
• The contrast effect lasts for a few minutes as the microbubbles are eliminated through the lungs.

Important considerations:

• Sulfur hexafluoride is generally well-tolerated, but there can be mild side effects like:
  • Dizziness
  • Headache
  • Nausea

It's important to note:

• This information shouldn't be a substitute for professional medical advice.
• If you're considering an ultrasound with sulfur hexafluoride, consult your doctor to discuss potential risks and benefits, especially if you have underlying health conditions.