Early Clinical Experience with ViewRays MRIdian Linac Presented at AAPM 2017

first_img News | Radiation Therapy | August 16, 2019 Drug Accelerates Blood System’s Recovery After Radiation, Chemotherapy A drug developed by UCLA physician-scientists and chemists speeds up the regeneration of mouse and human blood stem… read more Following radiation, the bone marrow shows nearly complete loss of blood cells in mice (left). Mice treated with the PTP-sigma inhibitor displayed rapid recovery of blood cells (purple, right). Credit: UCLA Broad Stem Cell Research Center/Nature Communications Related Articles on MRI-guided Radiation Therapy:MRI-guided Radiation Therapy (2017)First Patients Treated with ViewRay’s MRIdian Linac at Henry Ford Health SystemElekta Begins MR-Linac Installation at Sunnybrook Health Sciences CentreMRI-Guided Radiation Therapy (2016)MRI Brings New Vision to Radiation TherapyDutch Medical Center Begins Installation of World’s First High-field MRI-guided Radiation Therapy System FacebookTwitterLinkedInPrint分享 News | Patient Positioning Radiation Therapy | August 15, 2019 Mevion and C-RAD Release Integration for Improved Proton Therapy Treatment Quality Mevion Medical Systems and C-RAD announced the integration between the C-RAD Catalyst PT and the Mevion S250i proton… read more Related Content News | Neuro Imaging | August 16, 2019 ADHD Medication May Affect Brain Development in Children A drug used to treat attention-deficit/hyperactivity disorder (ADHD) appears to affect development of the brain’s… read more August 7, 2017 — ViewRay Inc. announced that several presentations of early clinical experience with its MRIdian Linac technology were made at the 2017 annual meeting of the American Association of Physicists in Medicine (AAPM), July 30-Aug. 2 in Denver. MRIdian Linac is the world’s only U.S. Food and Drug Administration (FDA)-cleared magnetic resonance imaging (MRI)-guided radiation therapy system with linear accelerator-based delivery, according to the company.The company’s MRIdian System was the focus of 30 abstracts selected by AAPM, including several talks describing the significant advantages of daily on-table adaptive radiation therapy and its positive clinical impact on treatment. MR-guided on-table adaptive therapy allows for dose escalation for stereotactic body radiation therapy (SBRT) treatments and dose de-escalation in cases where the critical structures are too close to the tumor. The AAPM Scientific Session talks also highlighted MRIdian’s fully integrated workflow for adaptive therapy, which incorporates complete Monte Carlo dose replanning to account for changes in the shape and position of the tumor and adjacent organs in less than two minutes.ViewRay featured a number of presentations in the company’s booth given by MRIdian users from five top cancer centers: Henry Ford Health System in Metro Detroit; University of California, Los Angeles; Washington University in St. Louis; University of Wisconsin; and University of Miami.Highlights from these talks included:Carri Glide-Hurst, Ph.D., from Henry Ford presented on their initial patient experience with MRIdian Linac including treatment times of 6.25 minutes for 8Gy SBRT treatments and 5 minutes for prostate intensity modulated radiation therapy (IMRT) treatments. She also showed MRIdian movies on how the system’s real-time imaging during treatment automatically detected and paused the treatment when a transient gas bubble shifted the prostate. Additional patients in the queue for Henry Ford include liver SBRT, retroperitoneal SBRT and accelerated partial breast irradiation (APBI). “MRIdian really does take the blindfold off in showing us things we’ve never seen before,” said Glide-Hurst. “We’re now able to treat indications that we hadn’t really treated previously like APBI. We’re excited about the potential of reducing margins and getting a conformal delivery with MRI guidance”;Anthony Doemer, M.S., from Henry Ford highlighted the ultra-sharp beam characteristics for the RayZR Double focused multileaf collimator (MLC). Because of its design, it removes the need for tongue and grooves, nearly eliminating any leakage through the leaves (average leakage, less than 0.001 percent). “We were able to successfully commission the MLC with great agreement between measured small beam profiles of 0.2 x 0.4 cm and larger profiles matching very well with the Monte Carlo simulations with tight conformance to the beam model,” said Doemer;Yingli Yang, Ph.D., from UCLA presented on MRIdian’s high-quality MRI images, specifically the superior soft-tissue image quality enabled by MRIdian’s processing techniques. Yang also highlighted early research imaging results acquired using a new MR acquisition technique reducing the imaging times of 17 seconds down to approximately 12 seconds. This 3-D MRI sequence provides motion artifact-free images with a large field of view (FOV) for short breath hold. She also presented research on a 3-D MRI acquisition scheme that is insensitive to motion and will enable free breathing MRI for patients who are unable to hold their breath;Vivian Rodriguez, Ph.D., from Washington University shared their extensive experience with on-table adaptive therapy, illustrating the significant anatomical changes that can take place within a short period of time and highlighting case examples where the treatment plan was reoptimized to escalate or de-escalate dose based upon the proximity of nearby critical structures while the patient was on the treatment table. “With a single button click we can replan within a minute a new treatment plan that reduces dose to organs at risk while giving a greater dose to the target,” said Rodriguez; andKathryn Mittauer, Ph.D., from the University of Wisconsin shared their experience personalizing patient treatments through daily dose-guided radiotherapy using online recalculation and evaluation of the actual dose distribution. “We’re able to deliver higher doses to targets adjacent to organs at risk due to improved confidence in treatment set up and delivery that would not otherwise be clinically feasible,” said Mittauer.For more information: www.viewray.com Images of regions of interest (colored lines) in the white matter skeleton representation. Data from left and right anterior thalamic radiation (ATR) were averaged. Image courtesy of C. Bouziane et al. The MD Anderson Proton Therapy Center expansion is expected to be completed in 2023. Rendering courtesy of Stantec. Catalyst PT image courtesy of C-RADcenter_img News | Image Guided Radiation Therapy (IGRT) | August 07, 2017 Early Clinical Experience with ViewRay’s MRIdian Linac Presented at AAPM 2017 Talks highlight clinical value of MRIdian on-table adaptive therapy for escalating target dose and avoiding nearby organs at risk News | Patient Positioning Radiation Therapy | August 07, 2019 Qfix kVue One Proton Couch Top Validated by Mevion Medical Systems Qfix and Mevion Medical Systems announced that a special version of the kVue One Proton couch top is now both validated… read more Technology | Neuro Imaging | August 07, 2019 Synaptive Medical Launches Modus Plan With Automated Tractography Segmentation Synaptive Medical announced the U.S. launch and availability of Modus Plan featuring BrightMatter AutoSeg. This release… read more News | Brachytherapy Systems | August 14, 2019 Efficacy of Isoray’s Cesium Blu Showcased in Recent Studies August 14, 2019 — Isoray announced a trio of studies recently reported at scientific meetings and published in medica read more News | Proton Therapy | August 08, 2019 MD Anderson to Expand Proton Therapy Center The University of Texas MD Anderson Cancer Center unveiled plans to expand its Proton Therapy Center during a… read more Technology | Interventional Radiology | August 16, 2019 Profound Medical Receives U.S. FDA 510(k) Clearance for Tulsa-Pro Profound Medical Corp. announced it has received 510(k) clearance from the U.S. Food and Drug Administration (FDA) to… read more News | Radiation Therapy | August 15, 2019 First Patient Enrolled in World’s Largest Brain Cancer Clinical Trial Henry Ford Cancer Institute is first-in-the-world to enroll a glioblastoma patient in the GBM AGILE Trial (Adaptive… read more News | Magnetic Resonance Imaging (MRI) | August 06, 2019 Canon Medical Introduces Encore Orian MR Upgrade Program Canon Medical Systems USA Inc. is helping to provide low-cost patient care solutions for its customers with the launch… read morelast_img read more

Latest Hot poker conservative host loses radio

first_imgLatest: ‘Hot poker’ conservative host loses radio show too by The Associated Press Posted Apr 10, 2018 10:04 am PDT Last Updated Apr 10, 2018 at 11:01 am PDT AddThis Sharing ButtonsShare to TwitterTwitterShare to FacebookFacebookShare to RedditRedditShare to 電子郵件Email NEW YORK, N.Y. – The Latest on TV host resigning after Parkland survivor threat (all times local):12:35 p.m.A conservative commentator who resigned from a St. Louis TV station after sending a threatening tweet about a 17-year-old survivor of a Florida high school shooting also is off the radio airwaves.Entercom spokeswoman Esther-Mireya Tejeda said Tuesday that Jamie Allman’s show on KFTK-FM has been taken off the air while the company “looks into the matter.” Entercom purchased KFTK-FM from Emmis Communications last month.The announcement came one day after Sinclair Broadcast Group said Jamie Allman’s resignation has been accepted and his KDNL-TV show cancelled.Businesses pulled advertising from Allman’s shows after he tweeted last month he would use “a hot poker” to sexually assault David Hogg. Hogg has strongly advocated for stricter gun control since 17 people were killed in the Feb. 14 mass shooting at his school in Parkland, Florida.___11:40 a.m.A conservative commentator who tweeted that he would use “a hot poker” to sexually assault a 17-year-old survivor of a Florida high school shooting has resigned from a St. Louis TV station.Sinclair Broadcast Group spokesman Ronn Torossian said in a statement Monday that Jamie Allman’s resignation has been accepted and his KDNL-TV show cancelled.Allman hasn’t responded to messages from The Associated Press seeking comment.Businesses pulled advertising from Allman’s shows after he sent the March 26 tweet targeting David Hogg.Hogg has strongly advocated for stricter gun control since 17 people were killed in the Feb. 14 mass shooting at his school in Parkland, Florida.Allman was absent Monday from his show on KFTK-FM. An Emmis Communications spokeswoman said in an email that it closed last month on the sale of the station to Entercom. A spokeswoman for Entercom didn’t immediately return a phone or email message.____7:20 a.m.A conservative commentator who tweeted that he would use “a hot poker” to sexually assault a 17-year-old survivor of a Florida high school shooting has resigned from a St. Louis TV station.Sinclair Broadcast Group spokesman Ronn Torossian said in a statement Monday that Jamie Allman’s resignation has been accepted and his KDNL-TV show cancelled.Allman hasn’t responded to messages from the Associated Press seeking comment.Businesses pulled advertising from Allman’s shows after he sent the March 26 tweet targeting David Hogg.Hogg has strongly advocated for stricter gun control since 17 people were killed in the Feb. 14 mass shooting at his school in Parkland, Florida.Allman was absent Monday from his show on KFTK-FM. The radio station’s owner, Emmis Communications, hasn’t responded to an email asking about Allman’s status.last_img read more