Table 2

Summary of the Characteristics of CT, MR, and PET Imaging and the Combined Modalities

CTMRPETPET/CTMR/PET
Anatomic imaging
 Spatial resolutionStrongStrongWeakStrongStrong
 Soft tissue contrastWeakStrongNPWeakStrong
Molecular and functional imaging
 Molecular imagingNPNPStrongStrongStrong
 Exogenous contrast tissue imagingModerateStrongNPModerateStrong
 Tissue characteristicsWeakStrongNPWeakStrong
 Temporal resolutionModerateStrongModerateModerateStrong
Other
 ComplexityStrongModerateModerateModerateWeak
 Scan timeStrongWeakModerateModerateWeak
 CostStrongModerateWeakModerateWeak
 Robustness of imagingStrongModerateModerateModerateWeak
Potential
 Research potentialModerateStrongWeakModerateStrong
 TranslatabilityStrongModerateWeakStrongModerate

CT = computed tomography; FDG = fluorodeoxyglucose; NP = not possible; other abbreviations as in Table 1.