VMAT planning for Elekta linear accelerators is supported with the following commercial and clinical routine treatment planning systems. Med Phys. Mar;37(3) Comparison of Elekta VMAT with helical tomotherapy and fixed field IMRT: plan quality, delivery efficiency and accuracy. VMAT, formally known as Intensity Modulated Arc Therapy. (IMAT), was first brought up by Dr. . Elekta VMAT can be delivered using single or multiple arcs.

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Summaries of selected studies: Precision planning for photon and electron based plans Monaco delivers high performance and high precision radiotherapy treatment planning for all major treatment techniques for photon and electron based plans. After modifying the elelta penalties, the number of acceptable plans increased to 11; 5 single-arc plans were acceptable, 7 after modification.

Elekta VMAT

Supplementary Material Additional file 1: National Center for Biotechnology InformationU. However, the conformity — for which no tolerance limit was given — lay statistically significant below the value of the IMRT plans before and after the modification CN: Plans with brain tumors showed similar behavior: The maximum target dose and the conformity were better for double-arc plans than for IMRT; for single-arc plans, the corresponding epekta were below the mean values of IMRT. Table 1 Planning objectives for organs at risk fmat target volumes.

This site uses cookies. With Elekta VMAT, single or multiple radiation beams sweep in uninterrupted arc s around the patient, dramatically speeding treatment delivery.

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Volumetric modulated arc therapy for delivery of prostate radiotherapy: This finding indicates that in complex cases with up to three different dose levels Vmaat, PTV2, PTV3the use of a generally valid template cannot be expected to produce an ideal dose distribution without further individual adaptations.

Elekta VMAT – Peninsula Cancer Center

The mean dose and V 28 Gy for the parotid glands were slightly better for VMAT after modification of the optimizing process; before modification, they were significantly better for IMRT. All authors read and approved the final manuscript. Vergleich zweier Planverifikationsmethoden bei Rotationsbestrahlungen.

Effects of flattening filter-free and volumetric-modulated arc therapy delivery on treatment efficiency. After modifying the optimization penalties, no improvements could be identified for either the target volume or the OAR. The study was performed based on ethical board approval Ethics Committee St. Inverse planning for intensity-modulated arc therapy using direct aperture optimization. Mean DVHs of 18 prostate cancer cases with two hip implants.

These techniques have given clinicians the flexibility to deliver conventional therapies to treat a wide range of tumors throughout the body, while also enabling treatment of highly complex cancers that require extreme targeting precision. For both single- and double-arc plans, the OARs and total body dose showed slight but non-significant improvements compared to IMRT; however, the maximum spine dose 1A: IMRT; thin dashed line: A comparison of single- and double-arc techniques revealed significant differences in favor of double-arc plans concerning target coverage D max: Significant differences were only observed for conformity in both modified single- and double-arc plans CN: List of the 10 used optimization templates.

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However, the maximum spine dose was clearly lower for all VMAT techniques up to HS and LP participated in the study design, in the discussion and interpretation of data and revised the manuscript critically.

Detailed values and the averaged DVH comparison are shown in the Additional file 2. Intensity-modulated arc therapy simplified.

However, the sparing of OARs shows individual behavior that depends strongly on the different tumor regions. Therefore, the proper quality of the optimizing engine is shown.

Elekta VMAT Radiation Therapy Rapidly Gaining Users Worldwide As Technique Evolves

Gallen, Switzerland Find articles by Hans Schiefer. The mean total body dose was statistically significant lower for the considered arc techniques IMRT: The adapted plans were then evaluated again and no further adapted plans were created, even if any objectives were not met.

Furthermore, plans with two arcs provide better dose distributions than plans with one arc. Journal List Radiat Oncol v.

Elekta VMAT Radiation Therapy Rapidly Gaining Users Worldwide As Technique Evolves

Casa di Cura S. IMRT in a single gantry arc. Physicians can visualize the tumor target at the time of treatment and guide therapy that increases radiation dose to the target while reducing exposure to surrounding healthy tissues.