Multiple imaging modality imaging apparatus

An imaging apparatus, comprising:

• a first imaging modality;
• a second imaging modality, wherein the first and second imaging modalities are in alignment with scanning zones for scanning an object or subject;
• a third imaging modality which is selectively moveable between a first location in which the third imaging modality is in alignment with the scanning zones for scanning the object or subject and a second location in which the third imaging modality is outside of alignment with the scanning zones;
• and
• an alignment unit that supports the third imaging modality, wherein the alignment unit provides adjustment of at least of a position or orientation of third imaging modality with respect to the scanning zones and provides angular variation in rotation around X and Z axes.