Table 1 A methodological quality scale of publications

Clincal reports

Prognostic factors

Age

0

2

Gender

0

2

Performance status

0

2

Tumor characteristics

Location of primary tumor

0

2

Number of metastatic sites

0

2

Size of hepatic metastasis

0

2

Differentiation grade

0

2

Description of the results of survival analysis

Number of patients

0

2

Number of deaths

0

2

Follow-up duration

0

2

Number of patients lost to follow-up

0

2

Univariate and multivariate analyses

0

2

Description of statistical tests

0

2

Survival definition

0

2

SUV cutoff definition or response definition

0

2

Subscores

PET/CT reports

Patients’ Characteristics

Weight

0

2

Glycaemia

0

2

¹⁸FDG PET acquisition protocol characteristics

Injected dose of ¹⁸FDG

0

2

Delay between injection

0

2

Data acquisition

0

2

Fasting duration

0

2

Technical Parameters

SUV formula

0

2

Type of PET/CT engine

0

2

Type of SUV attenuation and reconstruction parameters

0

2

Subscores

Total scores