Hitachi wins FDA nod for proton beam therapy real time image gating system

Hitachi (NYSE:HIT) said this week it won FDA 510(k) clearance for its Real Time Image Gating System designed for use with its proton beam therapy systems. Real Time Image Gating Proton Beam Therapy is designed to track and irradiate tumors in motion, using a 2mm diameter gold marker close to the tumor to establish its location as a reference via computed tomography. A dual-axis, orthogonal X-ray system is then used with pattern recognition software to identify the spatial location of the marker, and irradiation during treatment is performed only when the gold marker moves to within millimeters of the planned irradiation location. Development of the technology was sponsored in part by a grant from the Funding Program for World-Leading Innovative R&D on Science and Technology in 2010, sponsored by the Japanese Government. The grant was awarded to a joint project between Hitachi and Hokkaido University. Hitachi won clearance for the RGPT technology from Japan’s Pharmaceuticals Medical Device Administration in 2014. “Hokkaido University has been developing motion tracking technology in the field of X-ray therapy. By combining this technology with Spot Scanning technology, the accurate irradiation of tumors, including those attached to large organs in motion which are difficult to irradiate with X-rays, will be possible and will lead to greater adaptation. I am very pleased that this innovation for highly precise irradiation will become broadly available around the wor...
Source: Mass Device - Category: Medical Devices Authors: Tags: 510(k) Food & Drug Administration (FDA) Oncology Regulatory/Compliance Hitachi Source Type: news

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In this study, we focused on the pre-reconstruction space based on the photoelectric and Compton effect decomposition model to characterize different material components, and proposed an efficient method to calculate the projection decomposition coefficient. We converted the complex projection integral into a linear equation by calculating the equivalent monochromatic energy from the high and low energy spectrum. Meanwhile, we constructed a dual-energy CT system based on a photon-counting detector to take small animal scan and material discrimination analysis. Finally, the results of simulation and experimental study demon...
Source: Journal of X-Ray Science and Technology - Category: Radiology Tags: J Xray Sci Technol Source Type: research
CONCLUSIONS: Determination of the SUV value of the normal pelvis with 99m Tc-MDP SPECT/CT is feasible and highly reproducible. SUVs of the normal pelvis showed a relatively large variability. As a quantitative imaging biomarker, SUVs might require standardization with adequate reference data for the participant to minimize variability. PMID: 30103368 [PubMed - as supplied by publisher]
Source: Journal of X-Ray Science and Technology - Category: Radiology Tags: J Xray Sci Technol Source Type: research
ConclusionCentral wall acetabular fractures, although unrecognized intra- and post-operatively may impair implant survival after THA.
Source: International Orthopaedics - Category: Orthopaedics Source Type: research
CONCLUSIONS: Stand-alone TAS fixation with morselized allograft provides excellent radiological and clinical outcomes. The addition of a supplementary tension band and structural graft are not essential. This provides the opportunity to avoid the complications associated with graft harvesting and wiring. PMID: 30060381 [PubMed]
Source: Asian Spine Journal - Category: Orthopaedics Tags: Asian Spine J Source Type: research
In this study, the results of measurements using two methods to determine the threshold value namely, the newly developed method and a well-known and commonly used method of ISO50%, were compared. A novel method is based on the measurement of an additional reference workpiece. The correction value, based on the measurement, is determined, and then it takes account when determining the threshold value between the air and the material. The study was performed using two types of gauges. These were workpieces of a specified volume of material (consisting of reference balls) and with the defined values of linear dimensions (in ...
Source: Journal of X-Ray Science and Technology - Category: Radiology Tags: J Xray Sci Technol Source Type: research
This article proposes predicting the position of the vertebral artery on a true lateral X-ray of the axis vertebra from the background information acquired from the computed tomography (CT) scan utilizing fluoroscopy. Methods: Spiral CT scans of 33 C2 vertebrae were performed utilizing a 16-slice CT scanner lateral X-rays of C2 were then obtained before and after painting the vertebral artery grooves with barium. The space available for transarticular and C2 pedicle screw insertion above the vertebral artery groove in the isthmus was then calculated as a ratio for both X-rays and CT scans. Results: There was no sta...
Source: Surgical Neurology International - Category: Neurosurgery Tags: Surg Neurol Int Source Type: research
CONCLUSION: We establish a dual-constraint-based optimization model and correspondingly develop an accurate extrapolation method for partially truncated projections. The proposed method can be readily integrated into the clinical workflow and efficiently solved by using one-dimensional optimization algorithm. Moreover, it is robust for noisy cases with various truncation and can be further accelerated by GPU based parallel computing. PMID: 30040792 [PubMed - as supplied by publisher]
Source: Journal of X-Ray Science and Technology - Category: Radiology Tags: J Xray Sci Technol Source Type: research
Tweets that discuss the use of artificial intelligence (AI) in radiology are...Read more on AuntMinnie.comRelated Reading: NIH issues huge database of CT scans for AI testing AI algorithm generates 'artificial' medical images AI can find, classify pleural effusions on chest x-rays Radiology leaders must counter hype over AI in radiology Will AI cause radiologists to go the way of horses?
Source: Headlines - Category: Radiology Source Type: news
It ’s difficult to open a newspaper nowadays without seeing an article about artificial intelligence. These column-inches spark our imaginations with heady visions of possible futures and crease our brows with concern in equal measure. But one thing you cannot escape is that AI is here now and it’s only going to become more pervasive.While fear of an unknown technology is understandable, in many ways it does a disservice to the incredible impact that AI is already having on the world around us. In the healthcare space alone, it is offering ways to fundamentally rethink clinical practice, speeding up diagnosis, ...
Source: EyeForPharma - Category: Pharmaceuticals Authors: Source Type: news
Publication date: Available online 23 July 2018Source: Journal of Clinical Orthopaedics and TraumaAuthor(s): Vaibhav Bagaria, Rakesh Bhansali, Prashant PawarAbstractThe use of 3D printing in Orthopedics is set to transform the way surgeries are planned and executed. The development of X rays and later the CT scan and MRI enabled surgeons to understand the anatomy and condition better and helped plan surgeries on images obtained. 3DGraphy a term used for 3D printed orthopedic patient models and Jigs has gone a step further by providing surgeons with a physical copy of the patient's affected part that can not only be seen bu...
Source: Journal of Clinical Orthopaedics and Trauma - Category: Orthopaedics Source Type: research
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