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Table 1 Characteristics of molecular imaging modalities

From: In vivo molecular imaging in preclinical research

Imaging techniques

Resolution

Depth information

Acquisition time

Sensitivity

CT

50 μm

No limit

min

Not characterized

MRI

10–100 μm

No limit

min–h

10− 3 ~ 10-5 mol/L

Bioluminescence

1–2 mm

< 1–2 cm

min

10–15 ~ 10-17 mol/L

Fluorescence

1–2 mm

< 1 cm

s– min

10− 9 ~ 10-12 mol/L

SPECT

0.5–2 mm

No limit

min

10–10 ~ 10-11 mol/L

PET

0.1–1 mm

No limit

min

10–11 ~ 10-12 mol/L