Table 1 Characteristics of imaging techniques[20]
From: Emerging role of radiolabeled nanoparticles as an effective diagnostic technique
Imaging modality | Spatial resolution | Depth of penetration | Sensitivity (mol/L) | Molecular probe |
|---|---|---|---|---|
PET | 1 to 2 mm | No limit | 10−11 to 10−12 | ng |
SPECT | 0.3 to 1 mm | No limit | 10−10 to 10−11 | ng |
FMT (optical) | 1 to 3 mm | <5 cm | 10−6 to 10−12 | μg |
MRI | 50 to 250 μm | No limit | 10−3 to 10−5 | μg to mg |
X-Ray, CT | 25 to 150 μm | No limit | - | mg |
Ultrasound | 30 to 500 μm | mm to cm | 10−6 to 10−9 | μg to mg |