Imrt interplay effect
Witryna8 gru 2024 · Background: Complex anatomy surrounding the oropharynx makes proton therapy (PT), especially intensity-modulated PT (IMPT), a potentially attractive option due to its ability to reduce the volume of irradiated healthy tissues. Dosimetric improvement may not translate to clinically relevant benefits. As outcome data are emerging, we … Witryna7 kwi 2024 · The internal target volume (ITV)-based IMRT method can be used to reduce the effect of respiratory tumor motion. In this study, the effect of tumor motion on the dosimetric accuracy during ITV-based IMRT was investigated. ITV-based IMRT plans for a total of ten cases of liver cancer were prepared in TomoTherapy (Tomo) and …
Imrt interplay effect
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Witryna23 lis 2024 · Kardar L et al. 2014 Evaluation and mitigation of the interplay effects of intensity modulated proton therapy for lung cancer in a clinical setting Pract. Radiat. Oncol. 4 e259–68. Crossref Google Scholar. Li Y et al. 2014 On the interplay effects with proton scanning beams in stage III lung cancer Med. Phys. 41 021721. Crossref … WitrynaReceived 12 December 2005; accepted 19 July 2006 Intrafraction organ motion during the dynamic delivery of intensity-modulated radiation therapy (IMRT) treatment of lung …
Witryna28 lut 2014 · interplay effect in the dynamic IMRT delive ry. Thi s model can be clini c ally used to quantify the dosimetric uncertai nty due to the inte rplay effect prior to the treatme nt delivery. 1. Witryna•The combination of dose blurring and interplay effects resulted in reductions in the mean dose (compared to static delivery, with deep breath motion) ranging from: •2.6 to 7.4% for enhanced dynamic wedge •1.2 to 2.5% for field-in-field •0.9 to 4.0% for IMRT •Analysis of interplay patterns suggested effects started to wash
Witryna23 lis 2024 · While the problem of interplay is common for all dynamically delivered treatments, its nature differs between IMPT and IMRT: proton pencil beams are … Witryna28 lis 2006 · Intra-fraction organ motion during the dynamic delivery of IMRT treatment of lung tumors may cause unexpected hot/cold spots even within the target volume, due …
Witryna1 lip 2024 · Moreover, in a context of a modulated fluence, like Intensity Modulated RT (IMRT) or Volumetric Modulated Arc Therapy (VMAT), with continuous motion of the leaves of the Multileaf Collimator (MLC), it has been shown that the dose distribution can also be modified by an interplay effect (IE).
Witryna4 lis 2013 · The interplay-effect for small segments in the IMRT plan is estimated. While While the high dose rate, together with the cone-shaped beam profile, makes the use of flattening-filter-free beams more how do i convert a dcm file to jpgWitryna4 lut 2024 · In IMRT, the interplay effect leads to hot and cold spots within the treatment volume, and dose variation up to 18% in a single fraction has been observed [ 5 ]. The interplay effect is widely studied for lung tumors but much less literature is … how do i convert a csv file to gpxWitryna21 kwi 2012 · We have developed a treatment reconstruction simulation computer code that accounts for interplay effects by combining multileaf collimator controller log … how do i convert a dat file to pdfWitryna26 paź 2024 · Seco et al showed that for a sliding widow and step-and-shoot IMRT, up to an 18% dose variation was observed for a single fraction, under similar measurement … how do i convert a jpeg to an embroidery fileWitryna11 gru 2024 · Interplay effect is observed as the dose deposition happen when the target moves. It results in a sub-optimal dose distribution contributed by the lack of … how much is overbite surgeryWitryna25 cze 2003 · The effects of organ motion on conventional techniques were compared relative to that on IMRT techniques. For breast treatment, the effect of organ motion primarily broadened the penumbra at the posterior field edge. The dose in the rest of the treatment volume was not significantly affected. how much is over brushingWitryna22 cze 2016 · For lung or abdominal tumors particularly, their respiratory-induced movement can interplay with the dynamic MLC leaf motion of IMRT and VMAT and result in significant hot and cold spots in the tumor. Although the interplay effect might be clinically ignorable , some deviations from the planned dose are inevitable. … how do i control windows updates