Non-invasive refers to any medical or diagnostic procedure that does 'not involve penetration of the body' or insertion of instruments through the skin or into body cavities.
| Term | Description |
|---|---|
'Non-invasive' | External procedure, no body entry |
'Minimally invasive' | Small incisions or limited body access (e.g., laparoscopy) |
'Invasive' | Direct entry into body or organs (e.g., open surgery, catheterization) |