Imrt interplay effect

Author: hpch

August undefined, 2024

Witryna8 sty 2016 · This study quantified the interplay and gradient effects on GTV dose coverage for 3D CRT, dMLC IMRT, and VMAT SABR treatments for target amplitudes … Witryna22 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. …

Experimentally studied dynamic dose interplay does not ... - PubMed

Witryna1 sie 2024 · In the case where a tumour moving with respiration is treated with a dynamic treatment modality, such as intensity modulated radiation therapy (IMRT) or … WitrynaIntensity modulated radiation therapy (IMRT) is a widely used treatment method that offers increased dose conformity and sparing of the critical organs. This is enabled by a multi-leaf collimator (MLC) that modulates each field during the treatment. When dynamic MLC (DMLC) is used during respiratory motion, dosimetric errors may occur. canine orthodontics

In Jaffray, D A (Ed.) - eprints.qut.edu.au

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). Witryna21 kwi 2012 · We have developed a treatment reconstruction simulation computer code that accounts for interplay effects by combining multileaf collimator controller log … Witryna8 sty 2016 · For clinically relevant motion periods (5 s), the interplay effect was small, with deviations in D99% dose metrics for the target volume of less than for target … five benefits of a lawn mower

Quantification of interplay effects of scanned particle beams and ...

Effects of motion on the total dose distribution - ScienceDirect

Witryna21 kwi 2012 · Respiratory motion may lead to dose errors when treating thoracic and abdominal tumours with radiotherapy. The interplay between complex multileaf collimator patterns and patient respiratory motion … WitrynaReceived 12 December 2005; accepted 19 July 2006 Intrafraction organ motion during the dynamic delivery of intensity-modulated radiation therapy (IMRT) treatment of lung … five benefits of dissentWitryna4 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 … canine orthopedic index

"Witryna6 kwi 2024 · Interplay effects, however, occur only for dynamic treatment techniques such as IMRT, VMAT and IMPT, where there is a simultaneous movement of machine parts (for example the multileaf collimators (MLC)) and the target volume, resulting in hotspots and coldspots in the dose distribution. " - Imrt interplay effect

Imrt interplay effect

回転型強度変調放射線治療のコリメータ角度が interplay effect に …

Witryna7 maj 2008 · Interplay of scanned particle beams and moving targets has severe impact on the resulting dose distributions and fractionated treatment delivery potentially mitigates at least parts of these interplay effects. Scanned particle beams and target motion interfere. This interplay leads to deterioration of the dose distribution. … WitrynaNevertheless, highly modulated IMRT/VMAT plans are sensitive to delivery uncertainties due to the background interaction of multiple beams of MLC modulation and possible small‐field dosimetry errors and interplay effects dependent on the abdominal tumor and liver motion during treatment.

Did you know?

Witryna25 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. WitrynaIMRT, respiratory motion. I. I NTRODUCTION This study investigated the possible interplay effects aris-ing from the treatment of moving targets using the DCAT (dynamic conformal arc therapy) radiotherapy technique. Interplay effects, including dose blurring (also called “dose smoothing” or the “dose gradient effect”) and local-

WitrynaPurpose: The effects of respiratory motion on the tumor dose can be divided into the gradient and interplay effects. While the interplay effect is likely to average out over … Witryna11 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 …

Witryna1 sty 2015 · Although the interplay effects were small compared to the smoothing effect, the standard deviations of 1.4-2.3% (1SD) were larger than the narrow distribution for repeated stationary measurement ... Witryna23 lis 2024 · Several studies further investigate the effects of regular breathing motion and collimator speed on the outcome of MLC treatments (Court et al 2008, 2010 ), showing that non-negligible interplay effects increase with target magnitude, plan complexity and breathing period.

WitrynaIMRT interplay effect using a 4DCT MC dose calculation N91 This approach cleanly separates 4DCT dose simulation and deformable registration, allowing independent …

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. five benefits of equity financeWitryna1 sie 2024 · In the case where a tumour moving with respiration is treated with a dynamic treatment modality, such as intensity modulated radiation therapy (IMRT) or … canine orthopaedic indexWitryna23 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 … five benefits of elearningWitrynaThe authors present a segment-based convolution method to account for the interplay effect between intrafraction organ motion and the multileaf collimator position … five benefits of exercise during exams canine organ anatomyWitryna2 kwi 2012 · Using linac log files, real-time position management log files and 4DCT, we showed that the IMRT interplay effect caused a single fraction dose to differ from the … canine orthopedic hospital colorado springsWitryna26 paź 2024 · One study found significant changes in target coverage for highly modulated fields and large motion amplitude 10 while another reported minimal interplay even as target excursion increased to 2–3 cm. 11 A third study reported that interplay effects would be insignificant with sufficient margin. 12 Another reported negligible … five benefits of flexibility exercises