China＇s Rural Cooperative Medical System collapsed alongside communal farming at the end of the Maoist period in 1976, leaving most farmers vulnerable[1]. In rural areas, where 80% of people have been without health ...China＇s Rural Cooperative Medical System collapsed alongside communal farming at the end of the Maoist period in 1976, leaving most farmers vulnerable[1]. In rural areas, where 80% of people have been without health insurance of any kind, illness has emerged as a leading cause of poverty[24]. To address the poor state of health care among the rural population, in 2003 the Chinese government launched the New Rural Cooperative Medical System （NCMS）,展开更多
Simulation has made significant in-roads into the provision of medical education over the past twenty years. Simulation made its first impact in specialities such as emergency medicine and anaesthetics; however, it is...Simulation has made significant in-roads into the provision of medical education over the past twenty years. Simulation made its first impact in specialities such as emergency medicine and anaesthetics; however, it is now being used as an educational modality in a diverse range of specialities - from general practice to psychiatry. Perhaps the greatest pointer of the success of simulation is that it is now increasingly being seen as embedded in medical education and no longer something new and different. So now is probably an appropri- ate time to consider the future of simulation. Where will simulation go next？ It is likely that a number of different themes will emerge.展开更多
A numerical model is developed to simulate the acoustic field in heterogeneous tissue from a medical linear transducer.The coupled full-wave equation for nonlinear ultrasound is solved using a staggered-grid finite di...A numerical model is developed to simulate the acoustic field in heterogeneous tissue from a medical linear transducer.The coupled full-wave equation for nonlinear ultrasound is solved using a staggered-grid finite difference time domain method.The distribution of acoustic pressure and power in human abdominal wall with heterogeneities in sound speed,density,and nonlinear parameter are obtained.Compared with homogeneous medium,when sound speed in tissue is uniform and density unchanged,the acoustic energy decreases only1.8 dB in the focal region;when density in tissue is uniform and sound speed unchanged,the energy decreases 3.8 dB in the focal region,which is almost the same as heterogeneous tissue.Thus,the primary factor of the aberration of focused beam is the heterogeneous distribution of the tissue sound speed.展开更多
With the development of science and technology, great changes have taken place in medical education, making it increasingly complicated and diversified. For medical students who have just finished basic medicine cours...With the development of science and technology, great changes have taken place in medical education, making it increasingly complicated and diversified. For medical students who have just finished basic medicine courses and are preparing for their hospital internships, it is difficult to gain experience performing direct physical examinations on patients. Currently, residents＇ clinical skills are assessed very strictly; simply taking notes and reciting facts will not suffice. Because considerable attention is being paid to medical students＂ clinical skills on a national level,展开更多
文摘China＇s Rural Cooperative Medical System collapsed alongside communal farming at the end of the Maoist period in 1976, leaving most farmers vulnerable[1]. In rural areas, where 80% of people have been without health insurance of any kind, illness has emerged as a leading cause of poverty[24]. To address the poor state of health care among the rural population, in 2003 the Chinese government launched the New Rural Cooperative Medical System （NCMS）,
文摘Simulation has made significant in-roads into the provision of medical education over the past twenty years. Simulation made its first impact in specialities such as emergency medicine and anaesthetics; however, it is now being used as an educational modality in a diverse range of specialities - from general practice to psychiatry. Perhaps the greatest pointer of the success of simulation is that it is now increasingly being seen as embedded in medical education and no longer something new and different. So now is probably an appropri- ate time to consider the future of simulation. Where will simulation go next？ It is likely that a number of different themes will emerge.
文摘A numerical model is developed to simulate the acoustic field in heterogeneous tissue from a medical linear transducer.The coupled full-wave equation for nonlinear ultrasound is solved using a staggered-grid finite difference time domain method.The distribution of acoustic pressure and power in human abdominal wall with heterogeneities in sound speed,density,and nonlinear parameter are obtained.Compared with homogeneous medium,when sound speed in tissue is uniform and density unchanged,the acoustic energy decreases only1.8 dB in the focal region;when density in tissue is uniform and sound speed unchanged,the energy decreases 3.8 dB in the focal region,which is almost the same as heterogeneous tissue.Thus,the primary factor of the aberration of focused beam is the heterogeneous distribution of the tissue sound speed.
文摘With the development of science and technology, great changes have taken place in medical education, making it increasingly complicated and diversified. For medical students who have just finished basic medicine courses and are preparing for their hospital internships, it is difficult to gain experience performing direct physical examinations on patients. Currently, residents＇ clinical skills are assessed very strictly; simply taking notes and reciting facts will not suffice. Because considerable attention is being paid to medical students＂ clinical skills on a national level,
