Table 2.

A comparison between antibodies and nanobodies in molecular imaging, diagnosis and surgery.

Antibody	Nanobody
Slow and non-specific tumor accumulation	Rapid and specific tumor accumulation
Slow imaging time (1–6 days)	Rapid imaging time (1–3 h)
Increased background-to-tumor ratio	High tumor-to-background ratio
Slow clearance	Rapid clearance
Less accurate visualization of tumor, metastasized lesions and tumor boarders	More accurate visualization of tumor, metastasized lesions and tumor boarders