Table 1. Comparison of imaging modalities for atherosclerosis [55, 56].
Modality | Advantages | Disadvantages |
---|---|---|
SPECT | High sensitivity (10-14 – fmol) Signal quantification |
Low spatial resolution (1-2mm) Radiation exposure |
PET | High sensitivity (10-15 – fmol) Signal quantification Use of short half-life radionuclides |
Low spatial resolution (1-2mm) Radiation exposure |
CT | High spatial resolution (50-200μm) | Low sensitivity (10-6 - μmol) Radiation exposure |
MRI | High spatial resolution (10-100μm) | Low sensitivity (10-9 – nmol) Use of contrast agents |
IVUS | Differentiation between layers in the arterial wall High axial resolution (∼100μm) Details about plaque composition |
Invasive method by catheter |
OCT | Higher resolution than IVUS (∼10μm) | Invasive method by catheter Requires saline flushing of the lumen Limited depth of view |
FMT | Versatility of use | Limited depth of view for infrared probes |