Dosimetric evaluation of patient setup errors due to uncertainties ...

Dosimetric evaluation of patient setup errors due to uncertainties during IMRT for head and neck cancer cases. Marwa Abdel Razek1, Khaled Elshahat2, Ehab ...

This study was done to determine the error during RT on positioning displacement for patients treated for head and neck cancer. We tried to find the magnitude ...

Dosimetric impact of setup errors in head and neck cancer patients ...

Our study showed that the setup uncertainties if left uncorrected would result in significant decrease in target volume coverage and nonsignificant increase in ...

Dosimetric Effect of Rotational Setup Errors in Single-Isocenter ...

Our results indicate that correcting rotational uncertainties is critical in single-isocenter, multi-target SRS. For rotational deviations, radial distance of ...

Quantification of the uncertainties within the radiotherapy dosimetry ...

The overall uncertainty of TCP (95% CI) for a population of patients treated on different machines was +/−3%, +/−5%, and +/−3% for simulations based on the two ...

Clinical investigation Head and neck Effect of patient setup errors on ...

The dosimetric effect of random setup error was simulated by convolving the two-dimensional fluence distribution of each beam with the random setup error ...

Evaluation of Patient setup Accuracy and Determination of Optimal ...

Setup uncertainties can be divided into two categories: systematic errors and random errors.Whereas the random errors blur the dose distribution ...

Assessment of dosimetric impact of interfractional 6D setup error in ...

The treatment plan was recalculated on the CBCTs with the rotation error (RError), translation error (TError), and translation plus rotation ...

A prospective study to assess and quantify the setup errors

These setup uncertainties constitute systematic error (mean) and random errors (standard deviation [SD]). A systematic error is a treatment preparation or ...

Dosimetric consequences of rotational setup errors with direct ...

However, the efficacy of radiotherapy can be compromised by errors in the treatment setup of the patient which affects the delivered radiation.

Dosimetric impact of setup errors in head and neck cancer patients ...

To assess and analyze the impact of setup uncertainties on target volume coverage and doses to organs at risk (OAR) in head and neck cancer ...

Assessment of residual geometrical errors of clinical target volumes ...

8. Razek, M.A. ∙ Elshahat, K. ∙ Khalil, E. ... Dosimetric evaluation of patient setup errors due to uncertainties during imrt for head and neck ...

Dosimetric assessment of rigid setup error by CBCT for HN‐IMRT

Two plans, direct machine parameter optimization (DMPO) and fluence only (FO), were available for each patient to represent plans of different ...

Image guidance and positioning accuracy in clinical practice ...

The additional imaging dose of each patient is added to the realistic plan calculated for scenario two. So for this scenario we consider the ...

Dosimetric assessment of rigid setup error by CBCT for HN-IMRT.

Dose distributions in HN-IMRT are complex and may be sensitive to the treatment uncertainties ... Rigid setup errors for HN-IMRT patients were measured using cone ...

Effect of patient setup errors on simultaneously integrated boost ...

The dosimetric effect of random setup error was simulated by convolving the two-dimensional fluence distribution of each beam with the random setup error ...

Dosimetric evaluation of patient setup errors due to uncertainties ...

The research focuses on the dosimetric evaluation of patient setup errors in intensity-modulated radiation therapy (IMRT) for head and neck cancer cases, ...

Experimental Verification of Dosimetric Uncertainty Related to ...

Once the positioning was confirmed by CBCT, the. VMAT plan was delivered first at the planned setup (0 rotational error). A rotational error of 1 and 2 in yaw ...

A review of Image Guided Radiation Therapy in head and neck ...

Evaluation of setup. 44. M. Kearney et al. / Technical Innovations & Patient Support in Radiation Oncology 14 (2020) 43–50. Page 3. accuracy at a department ...

Evaluation of Setup Errors in Radiotherapy with Volumetric Intensity ...

Numerous studies have been carried out on the dramatic consequences that can lead to errors in patient positioning, these studies highlight the ...