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Most broadly speaking, invasive vs non-invasive... though some would argue it's more of a scale of invasion.
Consider a patient who goes to a hospital appointment with suspected cancer in their abdomen... on examination, the doctor would look at the patient, feel the relevant parts of their body, maybe listen to heart/lung/bowel sounds with a stethoscope, maybe look at their eyes with an otoscope. Those are all non-invasive.
After this, taking blood and getting a urine sample would be a bit more "invasive".
CT scanning or MRI is still quite non-invasive.
A diagnostic laparotomy - where surgeons literally open someone's body to look at what may be going on - is fairly invasive.
What else can I help you with?
What are two main categories of diagnostic examinations?
Noninvasive procedures and invasive procedures
What is the main difference between these two categories?
You haven't stated any categories.
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You tell me!
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What are the two main categories of nucleotides?
Deoxyribose and Ribose
What are the two main categories of statistics?
descriptive and inferential
What are the two main categories of biology?
botany and zoology.
What two main categories is IT separated into?
IT is separated into two main categories (1) those which process information, such as computer systems, and (2) those which disseminate information, such as telecommunication systems.
What are the two main categories of luster?
The two main categories of luster are metallic and non-metallic. Metallic luster appears shiny and reflective like metal, while non-metallic luster includes categories such as vitreous (glassy), pearly, greasy, and dull.
What are the two main categories of resistor?
linear and non-linear resistor
Aristotle divided organisms into what two main categories?
animal and vegetable
What are the two main categories of ceramic work what are some examples of each?
It is not possible to answer as there are many more than 2 categories.
