According to the current domestic laws and regulations of the medical devices classification management, combined with the characteristics of digital therapeutics products and the existing status of classification management of medical software products in China, and drawing on international classification management experience, this study discusses and analyzes the attribute definition and classification of digital therapeutics software products, with a view to provide reference for the classification management of digital therapeutics software products.
China ; Software

This paper introduces the safety and effectiveness requirements of medical device software. And it discusses the methods on evaluating medical device software from two aspects, the design and development process of the software and software products.
Equipment Safety ; Equipment and Supplies ; Software ; Software Validation

A method to get a size of the radiation isocenter of linear accelerators using star-shot images was presented and a computer program was developed to automate the method. Accuracy of the method was verified. The developed program was used to measure sizes of the radiation isocenters for a Clinac 21EX (Varian, USA) using data of quality assurance (QA) performed from June 2008 to December 2010. To calculated the size of radiation isocenter, positions of two points on each central ray of the star-shot image were found and the equation of the central ray was determined using the positions of two points. Using the equations of central rays the radius of the minimum circle intersecting all the central rays, which is one half of the size of radiation isocenter, was calculated. The program measured X-intercepts and y-intercepts of the central rays within errors of 0.084 mm and sizes of radiation isocenters within 0.053 mm. All the errors were less than the spatial resolution of star-shot images 0.085 mm. The radiation isocenter sizes of Clinac 21EX were 0.33+/-0.27 mm, 0.71+/-0.36 mm, 0.50+/-0.16 mm for collimator, gantry and couch respectively. During the measurement period all the measured sizes were less than 2.0 mm and within tolerance. The developed program could calculate the size of radiation isocenters and it would be helpful to routine QA.
Particle Accelerators ; Radius ; Software

In this tutorial, we introduce a differential equation simulation model for use in pharmacometrics involving NONMEM, Berkeley Madonna, and R. We report components of the simulation code and similarities/differences between software, rather than how to use each software. Depending on the purpose of the simulation, an appropriate tool can be selected for effective communication.
Computer Simulation ; Software

OBJECTIVETo realize propensity score matching in PS Matching module of SPSS and interpret the analysis results.

METHODSThe R software and plug-in that could link with the corresponding versions of SPSS and propensity score matching package were installed. A PS matching module was added in the SPSS interface, and its use was demonstrated with test data.

RESULTSScore estimation and nearest neighbor matching was achieved with the PS matching module, and the results of qualitative and quantitative statistical description and evaluation were presented in the form of a graph matching.

CONCLUSIONPropensity score matching can be accomplished conveniently using SPSS software.

OBJECTIVETo accomplish the computation of Fisher exact probability test for fourfold table data in Excel.

METHODThe computing program of exact probability method for medical data in fourfold table design was edited by employing the IF statement and the relevant functions, such as SUM, FACT, DSUM, etc in Excel. The computational results are compared and evaluated according to the case studies.

RESULTSThe output of Fisher Exact Probability was generated and presented correctly following the input of four numerical values into the computation program in the setting of Excel. The parametric outcomes are in agreement with those produced by SAS and SPSS, in the combination tables containing the P value, two-tailed cumulative P value, left-tailed P-value, right-tailed P-value, Chi2 values and P values both for direct Chi-squared test and corrected Chi-squared test.

CONCLUSIONSDirect Chi-squared test, corrected Chi-squared test combined with Fisher Exact Probability test for fourfold table data can be conveniently, rapidly, and accurately accomplished in Excel.

This paper is maintenance of four kinds of failures of Carestream GC1.5 the workstation used several years to summarize, workstation software, change the host, burn, workstations transmission, and four kinds of failures of the specific case of itemized elimination steps are introduced.
Computers ; standards ; Maintenance ; Software

Going toward the modernized and industrialized aim of Cho Ray hospital and using wide capabiliti of information technology of treating the diseades, we have done a software for diabetics to provide all kinds of diets suited for the clinical nutrition conditions. The software can used for Nutrition departments at hospitals, industry cookers, restaurant, hotel
Dietetics ; Software ; Information Management

Selection of bacteria classification, collection the normal groups in sterility of vaccine and substances of national Institute of Vaccines (IVAC) of Nha Trang - Da Lat during 20 years (from 1983 to 2003). Cultured environment thioglycolate and Sabouraud. Gram's stain method and recognized and biochemical test were applied routinely by WHO. A computer software based on bacteria classification and SQL language in MS Access were developed by IVAC. This program was used for controlling sterility of vaccine and substances to follow GMP requirement in the future
Infertility ; Vaccines ; Software ; classification

This paper describes the RAC installation process and some notes. Comparing with HA scheme, RAC Cluster technology can greatly improve the system performance.
Hospital Information Systems ; Software