Introduction Intensity modulated radiation therapy (IMRT) provides the means for improved treatment for a wide variety of cancers. Piggybacked onto 3DCRT and MLC technologies, IMRT has developed quickly, but will undoubtedly see improvements in core hardware and software as well as in peripheral applications such as record and verify, gating, etc. At the core, individual treatment centers shoul...

Many software projects fail because early life-cycle defects such as ill-defined requirements are not identified and removed. Therefore, quality assurance (QA) techniques for defect detection and prevention play an important role. The effectiveness and efficiency of QA approaches has been empirically evaluated. In this paper we discuss QA techniques optimized for requirements negotiations. In p...

The Quality Control (QC) routine performance tests of the fluoroscopy equipment are an irreversible element of the Quality Assurance (QA) and Patient Protection (PP) system. The results from these tests may be helpful in identifying and quantifying: changes in system performance due to component failure or drift, programmed changes in system performance due to upgrades software, a new spectral ...

GAMS Development and ARKI Consulting use Quality Assurance (QA) as an integral part of their software development and software publishing process. Research and development in the global optimization area has resulted in promising implementations. Initiated by customer demand, we have been adding three different global codes, BARON, LGO, and OQNLP, to our portfolio of nonlinear optimization solv...

While the authors recognise that this survey cannot claim to be representative of the views on Quality Assurance within the SME software sector in Ireland, they provide an interesting overview of attitudes towards this topic. The data is sometimes contradictory and unclear but we use it to explore the issues concerning QA practices in which we and others, including Enterprise Ireland, have an i...

In this paper we describe the web and mobile-phone interfaces to our multilanguage factoid question answering (QA) system together with a prototype speech interface to our English-language QA system. Using a statistical, data-driven approach to factoid question answering has allowed us to develop QA systems in five languages in a matter of months. In the web-based system, which is accessible at...

Three-dimensional (3D) pencil-beam scanning technique has been utilized since 2011 in NIRS-HIMAC. Beam delivery system and treatment planning software (TPS) require dosimetric patient-specific QA to check each individual plan. Any change in the scanned beams will result in a significant impact on the irradiation dose. Therefore, patient-specific QA for moving target irradiation requires additio...

The technical aspects of quality assurance (QA) in radiation oncology as practice in the United States will be reviewed and updated in the spirit of offering the experience to the radiation oncology communities in the Asia-Pacific region. The word "technical" is used to express the organisational components or processes and not the materials within the QA program. A comprehensive QA program in ...

In the recent years, more and more researchers believe measurement-based quality assurance (QA) method for intensity-modulated radiotherapy (IMRT) is insensitive in detecting various types of failures.(1-3) Machine delivery log-file analysis has been proposed to be a more effective and efficient approach in verifying IMRT delivery accuracy in terms of gantry, collimator, jaws, and MLCs.(1,4-9) ...

Recently there has been considerable interest in the utilization of covalent-organic frameworks (COFs) as ion-exchange membranes. While rapid ion conduction is experimentally observed COF membranes, underlying mechanism remains elusive. Herein, we report a molecular simulation study on chloride (Cl−) four membranes functionalized with quaternary ammonium groups (QA-2, QA-4, QA-6 and QA-EO) diff...