Assessment of demand for rehabilitation services and analysis of causes of the gap between supply and demand in China / 中国康复理论与实践

ObjectiveTo evaluate the overall demand for rehabilitation services from the perspective of the groups with disabilities, diseases, injuries and older adults, and explore the causes of the supply and demand gap of rehabilitation services. MethodsThe literatures in the field of rehabilitation were collected, summarized and analyzed, including policy documents issued by World Health Organization and relevant departments in China, surveys, and researches. ResultsThe demand for rehabilitation services caused by disabilities, chronic diseases, injuries and population ageing were vast in China, but many were still unmet. The main reasons leading to the gap included those population trend and health situation, the insufficient reserve of rehabilitation resources coming from incomplete development of rehabilitation service system early, and inadequate construction of disability reporting system, which could not efficiently meet rehabilitation demand with supply. ConclusionThe strategies to optimize the rehabilitation services system and promote the quality of the services based on the disability reporting system are warranted.

Design and realization of filtered backprojection algorithms of CT image reconstruction based on FHT and MSBP / 医疗卫生装备

Filtered backprojection algorithms are widely used in the commercial CT systems.The projection data and the object functions all belong to the real number area in applications of CT image reconstruction.The reconstruction algorithm based on Fourier transform involves lots of complex number operations.It's an inherent characteristic in computation.Because of the real number transform characteristic of Hartley transform comparing with Fourier transform,the signals and images in the real number area can be processed using Hartley transform instead of Fourier transform.Based on the geometrical relationships between image pixels and projection rays at different viewing angles,a Multi-orientation simultaneous computation of backprojection for tomographic image reconstruction(MSBP) approach is proposed.In this paper,the filtered backprojection algorithms of CT image reconstruction are realized by using FHT and MSBP.The algorithms may lead to the reduction of the memory space and can reduce the amount of calculation while retaining the precision.