Abstract: A storage medium, and a method and system for simulating photography in a virtual reality scene. The method comprises: firstly, in a virtual reality scene, adjusting composition parameters of a current viewport to obtain initial image data; then, adjusting camera parameters of the initial image data to obtain modified image data; and finally carrying out anti-distortion processing on the modified image data to output a target image. The demands of users for personalizing a 360-degree panoramic photo and outputting satisfying target images are satisfied. The method is not only simple to be operated, but also conducive to the further promotion and application of virtual reality technology.

Abstract: A storage medium, and a method and system for simulating photography in a virtual reality scene. The method comprises: firstly, in a virtual reality scene, adjusting composition parameters of a current viewport to obtain initial image data; then, adjusting camera parameters of the initial image data to obtain modified image data; and finally carrying out anti-distortion processing on the modified image data to output a target image. The demands of users for personalizing a 360-degree panoramic photo and outputting satisfying target images are satisfied. The method is not only simple to be operated, but also conducive to the further promotion and application of virtual reality technology.

Abstract: A coronary stent is provided with asymmetric drug releasing controlled coating used in interventional therapy of coronary disease, containing a bare stent and a coating consisting of drug and carrier, the coating is coated onto the outer wall surface of the bare stent, and is multi-layered. The drug concentration in the coating increases in sequence from the outer layer to the inner layer. The drugs used in different layers of the coating may be identical or different, and particularly may be one or more selected from taxol, rapamycin, heparin, docetaxel and a combination thereof. The carrier may be a random (lactide-glycolide) copolymer having a molecular weight of 50,000-200,000. The drug-coated stent of the present invention employs highly effective drugs, enabling a thinnest coating and reducing the vascular irritation. The drug release is regulated by altering the coating manner so as to satisfy the clinical requirement for controlled drug release.

Abstract: A coronary stent is provided with asymmetric drug releasing controlled coating used in interventional therapy of coronary disease, containing a bare stent and a coating consisting of drug and carrier, the coating is coated onto the outer wall surface of the bare stent, and is multi-layered. The drug concentration in the coating increases in sequence from the outer layer to the inner layer. The drugs used in different layers of the coating may be identical or different, and particularly may be one or more selected from taxol, rapamycin, heparin, docetaxel and a combination thereof. The carrier may be a random (lactide-glycolide) copolymer having a molecular weight of 50,000-200,000. The drug-coated stent of the present invention employs highly effective drugs, enabling a thinnest coating and reducing the vascular irritation. The drug release is regulated by altering the coating manner so as to satisfy the clinical requirement for controlled drug release.