Table 2.

Diagnostic accuracies in some selected studies on single photon emission tomography

Ref.	Year of pub	Tracer	Sensitivity	Specificity
Lachter et al[8]	2003	99mTc-HMPAO	58%	100%
Kerry et al[10]	2005
99mTc-HMPAO (2 h)		99mTc-HMPAO	87%	86%
99mTc-Leukoscan (1 h)		99mTc-Leukoscan	20%	86%
99mTc-Leukoscan (2 h)			40%	100%
99mTc-Leukoscan (4 h)			73%	57%
99mTc-Leukoscan (4 h-SPECT)			87%	57%
Paredes et al[9]	2010	99mTc-HMPAO
Endoscopic recurrence			88%	42.9%
Scintigraphic recurrence			73.3%	88.2%
Aarntzen et al[19]	2015	99mTc-CXCL8	95%	44%

SPECT: Single photon emission tomography.