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
Conclusions: Eclipse TPS generates acceptable target coverage for small targets with carefully arranged multiple beams despite relatively large dose discrepancy for each beam. Surface doses higher than Eclipse calculations can be mitigated with multiple beams. When using EBT3 film, the quenching effect should be considered.
ConclusionsThe complexity of illustrated cases demonstrates the need for a multidisciplinary board evaluation to reach a more accurate diagnosis.
In conclusion, the stoichiometric method for SECT calibration seems to depend on the tissue-substitutes used for calibration-which could be regarded as an additional source of uncertainty in proton range for bone tissues. Furthermore, Gammex tissue-substitutes appear to be a good representative of biological tissues within the energy range relevant to computed tomography-making the stoichiometric method unnecessary. PMID: 30474618 [PubMed - in process]
Hitachi Healthcare plans to showcase its new Scenaria View 64/128-slice CT...Read more on AuntMinnie.comRelated Reading: RSNA foundation awards grant for PET/MRI tracer Hitachi lands 1st order for new proton therapy system Hitachi nets FDA OK for proton therapy technology Hitachi inks deal to acquire IT firm VidiStar Hitachi to buy Mitsubishi particle therapy business
This study investigates the potential use of 4D robust optimisation to maintain sufficient target coverage in the presence of organ motion, while sparing surrounding healthy tissue, for hepatocellular carcinoma (HCC). The liver is particularly suited to study motion interplay effects since the treatment region exhibits smaller density gradients and more homogeneous tissue than targets in the thorax, making it less prone to range errors. A facility-specific beam time model, developed and experimentally validated previously, was used for the clinical evaluation. 4DDD analyses of eleven target volumes did not show a significa...
This study proves that simultaneous irradiation and in-beam MR imaging is technically feasible with a low-field MR scanner integrated with a static proton research beam line. PMID: 30465549 [PubMed - in process]
Conditions: Low Risk Prostate Cancer; Intermediate Risk Prostate Cancer Interventions: Other: EPIC questionnaire; Radiation: kV x-ray images; Radiation: Conebeam CT Sponsor: EBG MedAustron GmbH Recruiting
In this study different algorithms for 4DCBCT reconstruction and DIR were evaluated. For this purpose, CBCT scans of a moving ex vivo porcine lung phantom with 663 and 2350 projections respectively were acquired, accompanied by an additional 4DCT as reference. The CBCT projections were sorted in 10 phase bins with the Amsterdam-shroud method and reconstructed phase-by-phase using first a FDK reconstruction from the Reconstruction Toolkit (RTK) and again an iterative reconstruction algorithm implemented in the Gadgetron Toolkit. The resulting 4DCBCTs were corrected by DIR of the corresponding 4DCT phases, using both a morph...