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Fig. 3 | BioMedical Engineering OnLine

Fig. 3

From: Acquisition of a single grid-based phase-contrast X-ray image using instantaneous frequency and noise filtering

Fig. 3

Comparison of the areas indicated by the blue boxes in Fig. 2 (RT1, RT2, RT4, and RT5: dorsal and badge fin) for the a, c absorption x-axis gradient image and b, d phase-contrast X-ray image obtained using instantaneous frequency. IF: instantaneous frequency; Abs: absorption image; PCXI: phase-contrast X-ray image; dx: x-axis gradient image; RT: rectangle

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