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Table 1 Comparison of contrast and SNR in PA images from b1 to b6 in Fig. 5. Contrast here is a mean value of the images for mice cerebral blood vessels; SNR in the table here denotes signal-noise ratio, which is the analysis of the whole pictures

From: Seed-Mediated Synthesis of Tunable-Aspect-Ratio Gold Nanorods for Near-Infrared Photoacoustic Imaging

Name	Aspect ratio	Absorption peak	Laser	Num	Contrast	SNR
Control	–	–	800 nm	b1	1.113	0.245
Control	–	–	680 nm	b4	1.076	0.304
AuTR	13.2 ± 1.1	800 nm	800 nm	b2	3.451	1.378
AuTR	13.2 ± 1.1	800 nm	680 nm	b5	1.925	0.655
Au Rod1	8.5 ± 0.6	680 nm	800 nm	b3	1.514	0.419
Au Rod1	8.5 ± 0.6	680 nm	680 nm	b6	3.692	1.726

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