Diagnosis and evaluation of gastric cancer by positron emission tomography

Table 1 Gastric distention methods in ¹⁸F-fluorodeoxyglucose positron emission tomography and positron emission tomography/computed tomography imaging of gastric cancer

Ref.	Patients	n	Imaging modality	Distention methods	Sensitivity		Specificity
					Before distention	After distention	Before distention	After distention
Tian et al[27]	With suspected gastric tumors	38	FDG PET	Oral intake of vesicant (2-3 g) with 40-60 mL water		83%		88%
Yun et al[26]	After gastrectomy for gastric cancer	30	FDG PET	Drinking at least 300 mL water	94%	88%	69%	92%
Zhu et al[25]	With proven primary gastric carcinomas	3	FDG PET	Intake of 100 g bread and 400 mL cow milk
Zhu et al[20]	With proven gastric tumors	24	FDG PET	Intake of 300-400 mL cow milk		96%
Kamimura et al[21]	With gastric carcinomas	16	FDG PET	Intake 400 mL water	100%	88%	50%	100%
Lee et al[23]	With proven gastric tumors	44	FDG PET/CT	Intake 500 mL water	50%	75%
Ma et al[24]	With suspected gastric tumors	68	FDG PET/CT	Intake milk with diatrizoate meglumine	93%	91%	75%	92%

FDG: ¹⁸F-fluorodeoxyglucose; PET/CT: Positron emission tomography/computed tomography.