Assessment of Technology and Clinical Application of Hydrosurgery System / 中国医疗器械杂志

This paper introduces the technical features of hydrosurgery system and evaluates it from three aspects:safety and effectiveness, economy and technology maturity. The evaluation results show that the safety and effectiveness are high, and the safety mainly involves the misuse of the system, which cause the adverse events. A large number of literatures have proved that the system is more suitable for the debridement of fine parts. It is estimated that hydrosurgery system has better economic performance, but the cost and patients' cost is also increased correspondingly. In the aspect of technology maturity assessment, this technology is a patented technology, and the number of published papers both at home and abroad is on the rise, indicating that the initial application of the technology is better and the technology is in infancy stage. Therefore, hydrosurgery system has certain advantages in all aspects. Hospitals need to allocate the equipment according to their own needs and clinical application, while a wider range of clinical trials is needed to provide evidence-based evidence for clinical applications and promotion.

The Clinical Status and Process of Hydrosurgery System / 中国医疗器械杂志

This paper reviews the principle and clinical application of hydrosurgery system, including the burn debridement, diabetic foot wounds debridement and other trauma debridement. Meanwhile, this paper introduces the development direction of waterjet technology. Furthermore, the safety, effectiveness and suitability can be discussed.

Research on the impact of metal implants with different materials on radiation dose distribution / 中国医疗器械杂志

<p><b>OBJECTIVE</b>To investigate the impact of metal implants with different materials on radiation dose distribution based on film measurement method.</p><p><b>METHODS</b>Titanium plate, titanium intramedullary pin and stainless steel plate were set into phantom and irradiated separately by 6 MV and 15 MV X ray from linear accelerator. Dose distributions derived from different materials metal implants were measured and analyzed by film dosimeter.</p><p><b>RESULTS</b>For 6 MV X ray, the maximum interface dose increments of titanium plate, titanium intramedullary pin and stainless steel plate were 12.3%, 15.4% and 20.3%. As the radiation energy was increased from 6 MV to 15MV, the maximum interface dose increment of the titanium plate rose from 12.3% to 15.1%, the maximum interface dose increment of the steel plate rose from 20.3% to 30.8%.</p><p><b>CONCLUSIONS</b>Metal implants with different materials have obvious impact on radiation dose distribution. With the increase of the metal atomic number and energy of radiation, the degree of elevated dose also increases. These results suggest that correction of dose distribution is required for radiotherapy of patients with metal implants.</p>

Hospital clinical engineer orientation and function in the maintenance system of hospital medical equipment / 中国医疗器械杂志

The quantity of medical equipment in hospital rise quickly recent year. It provides the comprehensive support to the clinical service. The maintenance of medical equipment becomes more important than before. It is necessary to study on the orientation and function of clinical engineer in medical equipment maintenance system. Refer to three grade health care system, the community doctors which is called General practitioner, play an important role as the gatekeeper of health care system to triage and cost control. The paper suggests that hospital clinical engineer should play similar role as the gatekeeper of medical equipment maintenance system which composed by hospital clinical engineer, manufacture engineer and third party engineer. The hospital clinical engineer should be responsible of guard a pass of medical equipment maintenance quality and cost control. As the gatekeeper, hospital clinical engineer should take the responsibility of "General engineer" and pay more attention to safety and health of medical equipment. The responsibility description and future transition? development of clinical engineer as "General Engineer" is discussed. More attention should be recommended to the team building of hospital clinical engineer as "General Engineer".

Application of digital images in quality assurance of radiotherapy / 中国医疗器械杂志

The application of KV, MV real-time digital images and 3D reconstructed radiography in quality assurance of radiotherapy, provides effective means to verify the beam center and therapeutic range, calibrate the positioning accuracy and inspect the characteristics of radiotherapy equipment and radiation physics, greatly improves the quality and accuracy of radiotherapy.

Comparison of Three Different Methods to Measure the Surface Dose of Intra-operative Radiotherapy / 中国医学物理学杂志

Objective:To analyze and compare the results and precision of three different methods to measure the surface dose of Intra-operative radiotherapy,and conclude some experience of clinical application in Intra- operative radiotherapy.Methods:The study compared the results of measurement surface dose in phantom through three ways:cylindrical ionization chamber with 3D water scanner,plane-parallel ionization chamber,and MOSFET detector.Results:the measurement results of plane-parallel-chamber and MOSFET detector have a better consistency,and the maximum deviation is -1.13%.The method with cylindrical ionization chamber and 3D water scanner has larger deviation compare to the other two methods,the deviation range from-5.55%to 4.55%.Conclusion:The methods of plane-parallel chamber and MOSFET detector to measure the surface dose of Intra-operative radiotherapy can obtain accurate results.

Comparative Analysis of Stationary and Mobile Electronic Linear Accelerators in Intra-operative Radiation Therapy / 医疗卫生装备

The similarity and difference between stationary and mobile electronic linear accelerators in intra-operative radiation therapy are introduced. The contents and methods of quality assurance for stationary and mobile electronic linear accelerators and the key points to deliver intra-operative radiation therapy are described.

Technology and quality assurance of Intensity-Modulated Radiation Therapy / 医疗卫生装备

Intensity-Modulated Radiation therapy(IMRT) is more advanced than normal radiation therapy.It utilizes computer controlled radiation beam delivery to improve the conformity of dose distribution to the shape of the tumor.The quality assurance of IMRT is the key for a successful treatment.