Definition

The term noninvasive can refer to diseases or procedures:

 
• Noninvasive diseases usually do not spread to other organs and tissues or damage them.  
• Noninvasive procedures do not involve tools that break the skin or physically enter the body. Examples include X-rays, a standard eye exam, CT scan, MRI, ECG, hearing aid, Holter monitor, external splints, and casts.

Noninvasive is the opposite of invasive.

Medical Encyclopedia

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