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Mevion nabs FDA OK for proton therapy system

Mevion Medical Systems has received 510(k) clearance from the U.S. Food and...Read more on AuntMinnie.comRelated Reading: Mevion submits 510(k) to FDA for proton therapy system Mevion touts scanning milestone Mevion joins forces with MedPhoton Mevion completes milestone installation Mevion completes Fla. installation
Source: AuntMinnie.com Headlines - Category: Radiology Source Type: news

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Abstract Pencil beam scanning (PBS) periodic quality assurance (QA) programs ensure the beam delivered to patients is within technical specifications. Two critical specifications for PBS delivery are the beam width and position. The aim of this study is to investigate whether a 2-dimensional ionization chamber array, such as the MatriXX detector (IBA Dosimetry, Schwarzenbruck, Germany), can be used to characterize submillimeter-sized PBS beam properties. The motivation is to use standard equipment, which may have pixel spacing coarser than the pencil beam size, and simplify QA workflow. The MatriXX pixels ar...
Source: Physics in Medicine and Biology - Category: Physics Authors: Tags: Phys Med Biol Source Type: research
Mevion Medical Systems today announced the launch of its Mevion S250i proton therapy system, touting that the first patient in the world had been treated with the system. The Mevion S250i features improved pencil beam scanning fields and Hyperscan pencil beam scanning tech to allow for faster energy layer switching, the Littleton, Mass.-based company said. The system also features the company’s Adaptive Aperture multi-leaf collimator designed for multi-layer conformal field delivery, Mevion said, which it claims provides dose gradients with up to 3 times sharper lateral penumbra. “The launch of the Hypersc...
Source: Mass Device - Category: Medical Devices Authors: Tags: Business/Financial News Oncology Mevion Medical Systems Source Type: news
Mevion Medical Systems treated its first patient using the Mevion S250i proton...Read more on AuntMinnie.comRelated Reading: Mevion nabs FDA OK for proton therapy system Mevion submits 510(k) to FDA for proton therapy system Mevion touts scanning milestone Mevion joins forces with MedPhoton Mevion completes milestone installation
Source: AuntMinnie.com Headlines - Category: Radiology Source Type: news
CONCLUSION: Intrinsic geometric errors by DIR can influence the clinical evaluation of liver 4D PBS-PT plans. We recommend the use of an error bar for correctly interpreting individual 4D dose distributions. PMID: 29571904 [PubMed - as supplied by publisher]
Source: Radiotherapy and Oncology : journal of the European Society for Therapeutic Radiology and Oncology - Category: Radiology Authors: Tags: Radiother Oncol Source Type: research
Respiratory impacts in pencil beam scanned proton therapy (PBS-PT) are accounted by extensive 4D dose calculations, where deformable image registration (DIR) is necessary for estimating deformation vector fields (DVFs). We aim here to evaluate the dosimetric errors induced by different DIR algorithms in their resulting 4D dose calculations by using ground truth(GT)-DVFs from 4DMRI.
Source: Radiotherapy and Oncology - Category: Radiology Authors: Tags: Original article Source Type: research
Endoscopic resection of anterior skull base tumors offers the ability to perform resection of locally advanced disease with a minimally invasive technique. For patients who require postoperative radiation therapy after endoscopic resection, proton therapy may provide substantial sparing of surrounding normal tissue and superior dosimetry to photon techniques. Herein, we assess the combined approach of endoscopic surgery followed by proton therapy with pencil beam scanning (PBS).
Source: International Journal of Radiation Oncology * Biology * Physics - Category: Radiology Authors: Source Type: research
CONCLUSION: This dosimetric study supports the feasibility of a multi-center trial for renal SBRT using PBS, VMAT and Cyberknife. PMID: 29542260 [PubMed - as supplied by publisher]
Source: Journal of Applied Clinical Medical Physics - Category: Physics Authors: Tags: J Appl Clin Med Phys Source Type: research
CONCLUSION: Taking into account different day-to-day setup and beam errors, day-to-day determination of range has been shown to be reproducible using the proposed system. PMID: 29548595 [PubMed - as supplied by publisher]
Source: Zeitschrift fur Medizinische Physik - Category: Radiology Authors: Tags: Z Med Phys Source Type: research
Proteus 235, Pencil Beam Scanning, PTS-9.4.X, PTS-10.0.1.1 The Proton Therapy System - Proteus 235 (brand names: Proteus Plus and Proteus ONE) is a medical device designed to produce and deliver a proton beam for the treatment of patients with localized tumors and other conditions susceptible to treatment by radiation. The PTS may include a fixed small beam treatment room dedicated to the treatment of patients with localized tumors and other conditions susceptible to treatment by radiation localized to the head and neck.
Source: Medical Device Recalls - Category: Medical Devices Source Type: alerts
Proteus 235, Uniform and Pencil Beam Scanning The Proton Therapy System - Proteus 235 (brand names: Proteus Plus and Proteus ONE) is a medical device designed to produce and deliver a proton beam for the treatment of patients with localized tumors and other conditions susceptible to treatment by radiation. The PTS may include a fixed small beam treatment room dedicated to the treatment of patients with localized tumors and other conditions susceptible to treatment by radiation localized to the head and neck.
Source: Medical Device Recalls - Category: Medical Devices Source Type: alerts
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