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Fig. 2 | Perioperative Medicine

Fig. 2

From: Hyperspectral imaging for perioperative monitoring of microcirculatory tissue oxygenation and tissue water content in pancreatic surgery — an observational clinical pilot study

Fig. 2

HSI images of the right palm and fingertip (finger II–V) of patient undergoing pancreatic surgery. A and B were recorded before and after induction of anaesthesia, respectively. C was taken postoperative before anaesthesia emergence. Tissue oxygenation (StO2), near-infrared perfusion index (NPI), tissue haemoglobin index (THI) and tissue water index (TWI) are displayed colour-coded (scale at the right side of each image). Red/yellow areas indicate high values (50–100), and green/blue (0–50) areas indicate low values. The numerical scale ranges from 0 to 100. The regions of interest are exemplarily drawn in the images of B. StO2 is given in % and THI, NPI and TWI are index values in arbitrary units. HSI, hyperspectral imaging

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Perioperative Medicine

ISSN: 2047-0525