Table 5.

Summary of the findings of papers studying DECT application in head and neck lymph node evaluation.

Author	Aim	DECT-Parameters	Findings
Foust et al. [26]	Role of DECT parameters as predictors of nodal metastasis in OPSCC.	IC λHU	Both parameters were lower in metastatic lymph nodes.
Tawfik et al. [109]	Evaluate difference in DECT parameters between normal, inflammatory, and metastatic squamous cell carcinoma cervical lymph nodes.	IC IO	DECT-derived IC and IO differ significantly among normal, inflammatory, and metastatic SCC cervical lymph nodes.
Luo et al. [51]	Potential of DECT parameters in identifying metastatic cervical lymph nodes in oral squamous cell carcinoma.	ED IC NIC λHU DEI	All parameters showed significantly decreased values in metastatic nodes.

HNSCC = head and neck squamous cell carcinoma; OPSCC = oropharyngeal squamous cell carcinoma; NIC = normalized iodine concentration; IC = iodine concentration; λHU = slope of the spectral Hounsfield unite curve; Zeff = effective atomic number; ED = electron density; HU = Hounsfield unit; IO = iodine overlay; DEI = dual-energy index; AP = arterial phase; VP = venous phase; LNM = lymph node metastasis.