Nanotechnology

Ultrasound 

• Examinations are non-invasive (do not require the body to be opened up)

• Inexpensive, quick, convenient.

• Equipment is portable

• images could be stored electronically

• No harmful effects

• Painless

MRI

• Can diagnose diseases that cannot be seen by X-rays. Also avoids radiation from X-rays.

• Painless procedure

• Very accurate

SPECT

• Costs around $500,000. (Relatively cheap to PET ->$2,000,000)
•  Radio tracers have half-life up to 6 hours allowing more imaging time

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PET

•     Better resolution than SPECT
•       Good performance and fast speeds

General Ultrasound Machine 

MRI  Scanner

SPECT Scanner