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- W2927432477 abstract "Objective The aim of this study was to investigate value of superb microvascular imaging (SMI) and contrast-enhanced ultrasonography (CEUS) in evaluating the neovascularization of early bone regeneration. Methods Twenty-five Sprague-Dawley male rats were implanted with recombinant human bone morphogenetic protein-2/calcium phosphate cement (rhBMP-2/) in the muscle space of the left hind limb near the femoral head to establish the rat model of intramuscular ectopic osteogenesis. Ultrasonography and pathologic analysis were performed on the 3rd, 7th, 14th, 21st, and 28th days after modeling. Two-dimensional ultrasonography, SMI, and CEUS were used to assess neovascularization and bone formation. Results Pathologic examination showed that different levels of neovascularization were observed in the graft bone over time after modeling, which increased significantly from the 3rd to 14th day, and then gradually decreased. CEUS and SMI showed no obvious microvessels inside the graft bone on the 3rd day. On the 7th day after modeling, a small number of neovascular vessels were observed around the graft bone. On the 14th day, neovascularization was observed in both the peripheral and inner parts of the graft bone. The number of neovascular vessels inside the graft bone had decreased gradually by the 21st and 28th days. The results of SMI and CEUS indexes showed that the vascular index, peak intensity, enhancement intensity, and enhancement rate first increased and then decreased with time. Their peak points were found on the 14th day. Arrival time, time to peak, and enhancement time decreased gradually over time (P < .05). Conclusion The combined application of SMI and CEUS may be useful in evaluating the neovascularization of early osteoanagenesis." @default.
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- W2927432477 date "2019-04-04" @default.
- W2927432477 modified "2023-10-01" @default.
- W2927432477 title "Studies of Superb Microvascular Imaging and Contrast‐Enhanced Ultrasonography in the Evaluation of Vascularization in Early Bone Regeneration" @default.
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- W2927432477 doi "https://doi.org/10.1002/jum.15002" @default.
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