Fiber-Optic Temperature and Pressure Sensors Applied to Radiofrequency Thermal Ablation in Liver Phantom: Methodology and Experimental Measurements

Table 1

Comparison of fiber-optic technologies used for RFA monitoring.

Technology	Ref.	Active length	Spatial resolution	Accuracy	Pros	Cons
FBG	[27, 32–34]	1–4 mm	1–20 mm	0.1°C	Inline sensor	Resolution
DTG	[26, 37]	5 mm	10 mm	0.1°C	Fabrication	Resolution
LCFBG	[17, 39–42]	1.5 cm	75 m	0.2–2.5°C	Resolution	Detection
DTS/OFDR	[51–53]	20 m	20–200 m	0.2°C	Resolution	Backreflection
EFPI	[30, 61, 75]	25 m	—	6 Pa	Accuracy	Integration
EFPI/FBG	[18, 20]	25 m/4 mm	—	40 Pa/0.1°C	Dual sensor	RI change