Dynamic contrast enhanced ultrasound in differential diagnosis of hepatocellular carcinoma: A systematic review and meta-analysis

Table 1 Risk of bias assessment and concerns about applicability according to Quality Assessment of Diagnostic Accuracy Studies tool for quality assessment of prognostic accuracy studies

Ref.	Risk of bias				Applicability concerns
	Patients selection	Index test	Reference standard	Flow and timing	Patients selection	Index test	Reference standard
Ainora et al[5], 2023	Low	Unclear	Low	Low	Low	Low	Low
Dong et al[15], 2023	Unclear	Low	Low	Low	Low	Low	Low
Wildner et al[23], 2019	High	Unclear	Unclear	High	Low	Low	Low
Wildner et al[17], 2014	High	High	Low	High	Low	Low	Low