English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The intensity modulated radiation therapy (IMRT) is a type of radiation therapy using dynamic sliding window which modulated the beamlets of each field which are thus obtained as a variable profile. The multiple fields are obtained by mathematic optimization in special treatment planning system. In this way, the resulted field is generated by leaf sequencing using the multi-leaf collimator (MLC) or helicoidally beam. The optimization is an interactive process with operator and planning system where the dose prescription to target and dose limit for organ of risk are inserted to obtain the acceptable beam fluence and this process is named as inverse planning. The planning approved by physician should checked by means of dosimetry in order to assure the correct dose delivery; this action is the main task of a quality control (QC) program. The QC is performed by measurements of total absorbed dose and profile for each field planned for the patient. The acceptance level is 5% for total dose and was used for all 460 cases and 3935 fields analyzed between August 2001 to May 2006 at Albert Einstein Hospital and October 2007 to May 2008 at the Centro Infantil Dr. Boldrini. This work performs an analysis of the QC of treatments plans for all patients treated with IMRT. During four years the methodologies were frequently improved and upgradated for each tumor site and could thus be assured for the required quality of all treatments with dynamic IMRT.

Implementação e aceite de sistema de radioterapia de feixe modulado dinâmico com o uso de colimador secundário de múltiplas folhas