Fig. 1. Move contrast angiography verified with synchrotron radiation X-ray imaging of model mouse^[19]. (a) Traditional angiogram; (b) time-domain perfusion data of vascular tissue denoted with circular dots in Fig. 1(a); (c) low frequency interpreting data of vascular tissue; (d) high frequency interpreting data of vascular tissue; (e) motion artifact data of adjacent tissue denoted with square dot in Fig. 1(a); (f) low frequency interpreting data of adjacent tissue; (g) high frequency interpreting data of adjacent tissue; (h) temporal subtraction image; (i) move contrast angiogram (scale bar is 500 μm)

Fig. 2. Move contrast angiography verified by clinical data. (a)(b) original data; (c)(d) move contrast angiography

Fig. 3. Move contrast imaging verified experimentally with visible light^[20]. (a) Photograph of bamboo leaf with dyed water transmitting along vessels; (b) digital subtraction image acquired with the first and last frames in image sequence; (c) move contrast amplitude image; (d) move contrast phase image; (e) move contrast image of water transport along vessels

Fig. 4. Comparison between MCXI and DSI of water refilling along xylem vessel of maize leaf^[20]. (a) Digital subtraction image; (b) move contrast amplitude image; (c) move contrast phase image; (d) intensity profiles at the same position denoted by two lines in Figs. 4(a) and 4(b); (e) move contrast image containing both time and position information simultaneously

Fig. 5. Move contrast X-ray imaging for water refilling in willow branch^[20]. (a) Diagram of experimental setup; (b) microscopic image for cross-section of willow branch; (c) digital subtraction image with the first and last frames of image sequence; (d) move contrast amplitude image; (e) gray value profile at position indicated by line in Fig. 5(d); (f) move contrast image containing track and chronological information of water transport along xylem vessels

Fig. 6. Photo of experimental devices

Fig. 7. Experimental results for move contrast CT. (a) Four-dimensional distribution of water transport signal in willow branch; (b) fusion of MCXCT slice with traditional CT slice; (c) height-time curves for three typical water transport signals

Fig. 8. Dynamic X-ray imaging of electrochemical reaction after electrolytic cell is applied on a voltage of 0.6 V. (a) Keyframes of traditional temporal subtraction imaging at time period of 1--10 s; (b) reconstructed keyframes of move contrast imaging

Fig. 9. Electrochemical reaction in electrolytic cell with voltage of 0.6 V at initial stage. (a) Pseudocolor analysis results of keyframes of 300, 600, 900, and 1200 ms obtained by tranditional temporal subtraction X-ray imaging; (b) pseudocolor analysis results of keyframes of 300, 600, 900, and 1200 ms obtained by move contrast X-ray imaging

Fig. 10. Dynamic processes of electrochemical reaction after electrolytic cell is switched on at voltage of 0.5 V. (a) Keyframes of 1, 6, and 12 s obtained by traditional temporal subtraction imaging; (b) keyframes of 1, 6, and 12 s obtained by move contrast imaging