Metallic dental artifact reduction in computed tomography (Smart MAR): improvement of image quality and diagnostic confidence in patients with suspected head and neck pathology and oral implants

Publication date: Available online 15 July 2019Source: European Journal of RadiologyAuthor(s): Felix Feldhaus, Georg Böning, Martin Jonczyk, Johannes Kahn, Uli Fehrenbach, M. Maurer, D. Renz, Bernd Hamm, Florian StreitparthAbstractPurposeWe determined whether the Smart MAR metal artifact reduction tool - a three-stage, projection-based, post processing algorithm - improves subjective and objective image quality and diagnostic confidence in patients with dental artifacts and suspected head and neck pathology compared to standard adaptive statistical iterative reconstructions (ASIR V) alone.MethodThe study included 100 consecutive patients with nonremovable oral implants or dental fillings and suspected oropharyngeal cancer or abscess. CT raw data of a a single-source multislice CT scanner were postprocessed using ASIR V alone and with additional Smart MAR reconstruction. Image quality of baseline ASIR V and Smart MAR-based reconstruction series was compared both quantitatively (5 regions of interest, ROIs) and qualitatively (two independent raters).ResultsAdditional Smart MAR reconstruction significantly seems to improve both attenuation and noise adjacent to implants and in more distant areas (all p 
Source: European Journal of Radiology - Category: Radiology Source Type: research

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Conclusions: Catching errors prior to treatment is the only way to “chase zero” in radiation oncology. Various types of errors may exist in treatment plans and our GCPR model succeeds in preventing many errors of all shapes and sizes in target definition, dose prescriptions, and treatment plans from ever reaching the patients. Background and Introduction Since the release of the seminal report from the Institute of Medicine (IOM) titled, “To Err is Human,” in 1999, the importance of patient safety and avoiding medical errors have been recognized and endorsed by the physician community, as we...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
ConclusionIn the RT planning strategy, the present findings support the use of PET/CT to improve upfront regional staging of HNC disease, particularly for oral cavity tumors. Further investigations are advocated to evaluate if this strategy could impact on long-term outcomes in terms of local control and overall survival.
Source: La Radiologia Medica - Category: Radiology Source Type: research
Abstract: Head and neck cancers have a very poor prognosis and are common in France. They are subject to various recommendations for early detection and management, but there is no detailed data in the French general population to fuel the public health debate on it. A high-resolution population-based study about cancer management was conducted, using cancers registries in the north-west of France, on 1729 tumors diagnosed between 2008 and 2010. The tumors were diagnosed late (70.3% stage III–IV), mainly after the onset of symptoms (93.2%). After adjustment, advanced stages were more frequent in patients with hypop...
Source: Medicine - Category: Internal Medicine Tags: Research Article: Observational Study Source Type: research
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Source: AuntMinnie.com Headlines - Category: Radiology Source Type: news
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Authors: Omami G, Tamimi D, Branstetter BF Abstract A combination of positron emission tomography (PET) with (18)F-labeled fluoro-2-deoxyglucose ((18)F-FDG) and computed tomography ((18)F-FDG-PET/CT) has increasingly become a widely used imaging modality for the diagnosis and management of head and neck cancer. On the basis of both recent literature and our professional experience, we present a set of principles with pictorial illustrations and clinical applications of FDG-PET/CT in the evaluation and management planning of squamous cell carcinoma of the oral cavity and oropharynx. We feel that this paper will be o...
Source: Imaging Science in Dentistry - Category: Dentistry Tags: Imaging Sci Dent Source Type: research
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Source: Practical Radiation Oncology - Category: Cancer & Oncology Source Type: research
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Source: Acta Oncologica - Category: Cancer & Oncology Authors: Tags: Acta Oncol Source Type: research
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Source: Radiotherapy and Oncology : journal of the European Society for Therapeutic Radiology and Oncology - Category: Radiology Authors: Tags: Radiother Oncol Source Type: research
CONCLUSIONS: There can be significant changes in primary and nodal tumor volumes during the course of H&N chemoradiotherapy. Considering the proposed decision trees, radiation oncologists can select patients predicted to have high %GTVΔ, who would theoretically gain the most benefit from adaptive radiotherapy, in order to better use limited clinical resources. PMID: 25731804 [PubMed - as supplied by publisher]
Source: Technology in Cancer Research and Treatment - Category: Cancer & Oncology Authors: Tags: Technol Cancer Res Treat Source Type: research
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