Difficulties and Countermeasures for Ortho Process Optimization in DR System / 中国医疗器械杂志

Making an Ortho image is an important method to diagnose spinal and leg lesions in clinic. As the whole process requires multiple exposures in different positions, and it is very complicated and time consuming, it leads to low efficiency and it's hard to obtain ideal stitching result from image quality. The optimization of the workflow can not only reduce the workload of the operator, improve the work efficiency, but also improve the comfort of the patient in the process, finally to ensure the quality of the stitching image. This paper firstly introduces the background and workflow of making an Ortho image. Then, each optimization solutions are elaborated, including the encountered difficulties and the countermeasures. It provides a detailed reference about how to realize the Ortho function in DR system.

The application of testing DQE in upgrading of DR based on flat panel detector / 中国医学装备

Objective:To discuss the test methods and the application value of detective quantum efficiency (DQE) in upgrading of DR based on flat panel detector(FPD).Methods:Combining the dose of incident X-rays with the image brought by flat panel detector. According to the international electrotechnical commission IEC 62220-1 standard method, the tungsten imaging,and combined with the relationship between the FPD and incident X-ray air kerma, using DQEPro equipment and software to calculate the result of the three different types of FPD.Results: The experiment proves that the basic performance of flat panel detector is known definitely by testing the DQE. DQE can reflect the quality of imaging performance in different types of flat-panel detector.Conclusion: The upgrading of DR based on flat panel detector and the DQE testing can be a better technical basis for DR measurement performance, then it can be ensure the quality of DR upgraded in diagnostic imaging.

Importance of preventive maintenance to several faults of DR system / 中国医学装备

To discuss the common failures of PHILIPS DR and KODAK DR7500, analyze the working principle and failure phenomenon of the device, and then propose the exclusion and problem-solving methods to prove the accuracy through practice. The paper also focused on the correct use of DR and how the equipment maintenance staff to do a good job of maintenance and preventive maintenance , reduce unexpected failures and prolong the equipment life, provide reference for counterparts involved in the DR maintenance

Quality Assurance of DR System Refitted from Common X-ray Machine / 医疗卫生装备

This paper suggests how to ensure the production quality when the common X-ray machine is refitted to DR system,and describes that a suitable X-ray machine and an aptitude company are necessary to refit DR system.It also introduces some methods on how to refit,inspect and practise in order to ensure the refitted DR system a reliable quality,stable performance and clear image.