Table 2.

Summary of injection parameters with different needle devices: single end hole needle (SEHN), multiple side hole needle (MSHN), and multi-pronged injection needle (MPIN).

Formulation	Needle type	Volume	Injection rate	Gauge
Image-able Gel: POL22, 40 mg I/mL	SEHN	4, 8.6, and 14 mL	1000 mL/h	18
	SEHN	4 mL	10, 100, and 1000 mL/h	18
	MSHN		10, 100, and 1000 mL/h	19
	MPIN (deployed 1 cm and 2 cm)		10, 100, and 1000 mL/h	18
No Gel: Normal saline, 40 mg I/mL	SEHN	4 mL	10 mL/h	18
	MSHN		10 mL/h	19
	MPIN (deployed 1 cm and 2 cm)		10 mL/h	18