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 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.
Interplay effect on a 6-MV flattening-filter-free linear accelerator with high dose rate …
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. 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 … lithuania vs bosnia and herzegovina size
回転型強度変調放射線治療のコリメータ角度が interplay effect に …
Witryna4 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 . The … Witryna1 sty 2011 · The interplay effect does not result in unexpected dose variation, and the dose gradient at the edge of the PTV, obtained from dynamic measurement, agreed within 1 mm compared with static-convolved measurement. ... An experimental investigation on intra-fractional organ motion effects in lung IMRT treatments. Phys … WitrynaIMRT interplay effect using a 4DCT MC dose calculation N93 (a) (b) (c) (d) Figure 2. End of inhale (EOI) CT scan of 1D motion phantom in axial (a), sagittal (b) and coronal (c) view with contours for the concave target. Photograph of 1D motion phantom (d). of the phantom, we used a prostate plan with a dominant intra-prostatic legion boost), lithuania vacation packages