ABSTRACT
Hemodynamics is a branch of fluid mechanics, which mainly studies the physiological process of circulatory system from the perspective of mechanics, and has a wide range of applications in medicine. The entity teaching model is made to help medical students master the knowledge of hemodynamics more easily and intuitively by showing them the phenomenon of laminar flow, turbulence and axial concentration of red blood cells. And then we check their learning effect by questionnaires. Students are interested in the entity teaching model that the teacher has used in the class. Thus, the entity teaching model can play an important role in the teaching process.
ABSTRACT
Objective:To investigate the value of 3D printing technology in sphenoid ridge meningioma dissection. Methods:By using craniocerebral spiral enhanced CT scan DICOM images, the skull, vessels, and tumor were extracted, reconstructed, and assembled and integrated in the same coordinate system. Then, we constructed a 3D virtual model and a 3D-printed entity model, which was ap-plied for preoperation and postoperation. Results:Virtual models of the brains of five patients were reconstructed successfully and 3D entity models were produced. The models expressed the relationship among tumors, adjacent blood vessels, and the important posi-tion of the nerve tissue. Then, the models were applied to the reference before surgery planning and after surgery. Five cases were successfully performed. Conclusion:The use of the entity model of sphenoid ridge meningioma is important in optimizing operation plans, improving tumor resection, and reducing intraoperative bleeding.