Most techniques provide resolution of the order of 1 mm
Resolution - Smallest feature that may be seen clearly
X-Ray Films 0.1 mm X-ray radiation
Mammography 0.03 X-ray radiation
CT Scan 0.4 X-ray radiation
PET Scan 5-7 Nuclear radiation
MRI 1.0 Radio-frequency
Ultrasound 0.3 Sound waves
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