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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Due to the low number of cases 6 left, 4 right elektz, no statistical significance for the differences can be given. These patient plans included the following: MLCs with smaller widths may improve the plan quality for such cases [ 28 – 30 ]. These values eleita not consistent with the findings of some previous studies [ 10203435 ] that reported that the integral dose delivered to the patient is independent of the number of beams and the treatment technique; however, some other studies confirm our results [ 111618 ].
Elekta VMAT – Peninsula Cancer Center
Precision planning for photon and e,ekta based plans Monaco delivers high performance and high precision radiotherapy treatment planning for all major treatment techniques for photon and electron based plans. However, the sparing of OARs shows individual behavior that depends strongly on the different tumor regions. Prostate cases with one hip implant presented varying results depending on the treatment technique. The differences varied but were mainly significant and clinically important for the target coverage, particularly for the following: A total of 45 prostate cases were analyzed, of which 11 involved pelvic lymph nodes, 16 involved one hip implant and 18 involved two hip implants.
Support Center Support Center. Single-arc plans had smaller improvements in comparison to IMRT, with significant differences only for D max Volumetric modulated arc therapy VMAT vs.
As the number of MUs per treatment is correlated with the amount of scatter dose and leakage radiation, which could be important based on the induction of secondary malignancies [ 3233 ], a decrease in the number of MUs achieved with VMAT is desirable.
Volumetric modulated arc therapy: Entering its third year of commercial availability, Elekta VMAT has garnered more than orders, with many customers using the arc-based technique clinically since Inverse planning for intensity-modulated arc therapy using direct aperture optimization.
Elekta VMAT Radiation Therapy Rapidly Gaining Users Worldwide As Technique Evolves
Similarly, the OAR sparing was better for double-arc plans. Associated Data Supplementary Materials Additional file 1 List of the 10 used optimization templates.
CN ranges from 0 to 1, where 1 is the ideal value. Gallen, Rorschacherstrasse 95, St.
Journal List Radiat Oncol v. Methods A total of plans were evaluated in this study, including 38 endometrial, 57 head and neck, 12 brain, 10 breast and 45 prostate cancer cases. Gallen, Switzerland Find articles by Ludwig Plasswilm.
In a comparison of single- and double-arc techniques, the PTV coverage was significantly different for plans with two arcs. Varian Medical systems, Inc. Treatment delivery systems With bmat comprehensive choice of delivery systems, Elekta is the ideal partner for ensuring that each clinic and patient receives the best system and treatment elektaa their needs.
All 2A plans for the LN cases met the clinical objectives; 1A plans were acceptable in 8 cases, 10 after modification.
Intensity-modulated arc therapy with dynamic multileaf collimation: However, the sparing of the implants and the total body dose were significantly reduced in elketa to the IMRT plans implant: Intensity-modulated arc therapy simplified. Table 1 Planning objectives for organs at risk and target volumes. A comparison of single- and double-arc plans revealed highly significant differences in favor of 2A in target coverage and the maximum bladder dose.
The calculation times — often a disadvantage of VMAT planning [ 91013 ] — do not show large differences: Based on the available IMRT optimizing templates, new VMAT optimizing templates for each treatment region and prescribed dose were created in total 10 different templates: Significant differences were only observed for conformity in both modified single- and double-arc plans CN: Plans with brain tumors showed similar behavior: However, in contrast to the brain cases, a modulation with two arcs allowed for the eleota to be compensated.
However, the target coverage of the It also is beneficial for patients whose pain makes prolonged treatment sessions undesirable.
Clinicians at University Medical Center Mannheim have been evaluating Elekta VMAT for a year, utilizing the technique for 15 patients with prostate or paraspinal tumors. The mean dose for the heart seems to show a statistically significant improvement for single arc plans IMRT: Between the evaluated tumor regions and prescribed doses, differences were identified. IMRT; thin dashed line: