Sensors, Vol. 19, Pages 5022: Spectral Signatures of X-ray Scatter Using Energy-Resolving Photon-Counting Detectors

Sensors, Vol. 19, Pages 5022: Spectral Signatures of X-ray Scatter Using Energy-Resolving Photon-Counting Detectors Sensors doi: 10.3390/s19225022 Authors: Cale E. Lewis Mini Das Energy-resolving photon-counting detectors (PCDs) separate photons from a polychromatic X-ray source into a number of separate energy bins. This spectral information from PCDs would allow advancements in X-ray imaging, such as improving image contrast, quantitative imaging, and material identification and characterization. However, aspects like detector spectral distortions and scattered photons from the object can impede these advantages if left unaccounted for. Scattered X-ray photons act as noise in an image and reduce image contrast, thereby significantly hindering PCD utility. In this paper, we explore and outline several important characteristics of spectral X-ray scatter with examples of soft-material imaging (such as cancer imaging in mammography or explosives detection in airport security). Our results showed critical spectral signatures of scattered photons that depend on a few adjustable experimental factors. Additionally, energy bins over a large portion of the spectrum exhibit lower scatter-to-primary ratio in comparison to what would be expected when using a conventional energy-integrating detector. These important findings allow flexible choice of scatter-correction methods and energy-bin utilization when using PCDs. Our findings also propel the development of efficient spect...
Source: Sensors - Category: Biotechnology Authors: Tags: Article Source Type: research

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rera Breast cancer is the most common cancer observed in women. Although mammography is a recognized method, it remains ionizing and cannot be used routinely or in young adults, leaving up to two years between two diagnoses. Prior to validation on human subjects, this study aims to validate on phantoms the feasibility of quantifying breast density and detecting breast cancer tumors using a smart bra in young women. Six phantoms with various densities and seven phantoms with various volumes of modelized tumor were prepared and measured with a smart bra, including an electrophysiological module. There was a significant d...
Source: Sensors - Category: Biotechnology Authors: Tags: Article Source Type: research
Shah Islam Hugh Harvey By HUGH HARVEY, MBBS and SHAH ISLAM, MBBS AI in medical imaging entered the consciousness of radiologists just a few years ago, notably peaking in 2016 when Geoffrey Hinton declared radiologists’ time was up, swiftly followed by the first AI startups booking exhibiting booths at RSNA. Three years on, the sheer number and scale of AI-focussed offerings has gathered significant pace, so much so that this year a decision was made by the RSNA organising committee to move the ever-growing AI showcase to a new space located in the lower level of the North Hall. In some ways it made sense to ...
Source: The Health Care Blog - Category: Consumer Health News Authors: Tags: Artificial Intelligence Health Tech Start-Ups AI Hugh Harvey Radiology RSNA RSNA 2019 RSNA19 Shah Islam Source Type: blogs
Full-field digital mammography (FFDM) detects breast cancer better than either...Read more on AuntMinnie.comRelated Reading: DBT finds more cancers of all types than FFDM DBT bests FFDM for surveillance after surgery U.K. study underscores mammography's effectiveness DBT again bests FFDM for screening Digital mammo finds more cancer, but boosts biopsy callbacks
Source: AuntMinnie.com Headlines - Category: Radiology Source Type: news
AbstractFor AI researchers, access to a large and well-curated dataset is crucial. Working in the field of breast radiology, our aim was to develop a high-quality platform that can be used for evaluation of networks aiming to predict breast cancer risk, estimate mammographic sensitivity, and detect tumors. Our dataset, Cohort of Screen-Aged Women (CSAW), is a population-based cohort of all women 40 to 74  years of age invited to screening in the Stockholm region, Sweden, between 2008 and 2015. All women were invited to mammography screening every 18 to 24 months free of charge. Images were collected from the PACS...
Source: Journal of Digital Imaging - Category: Radiology Source Type: research
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Source: TIME: Health - Category: Consumer Health News Authors: Tags: Uncategorized medicine onetime Research syndication Source Type: news
CONCLUSION: To date there is no algorithm that has beyond doubt been proven to outperform double reporting by two certified breast radiologists. AI could, however, in the foreseeable future, take over the following tasks: preselection of abnormal examinations to substantially reduce workload of the radiologists by either excluding normal findings from human review or by replacing the double reader in screening. Furthermore, the establishment of radio-patho-genomic correlations and their translation into clinical practice is hardly conceivable without AI. PMID: 31811325 [PubMed - as supplied by publisher]
Source: Der Radiologe - Category: Radiology Authors: Tags: Radiologe Source Type: research
BOSTON (CBS) — Mammograms are routinely used to screen for breast cancer in women, but there’s mounting evidence that they may also help identify women at risk for heart disease. Mammograms don’t just detect breast tumors, but can also show calcium deposits in the arteries in the breasts, which has been linked to calcium deposits in the arteries in the heart. Calcium buildup in the coronary arteries is strongly associated with heart disease. Researchers at the University of California San Diego looked at nearly 300 women and found that those with calcified breast arteries were more than twice as likely to...
Source: WBZ-TV - Breaking News, Weather and Sports for Boston, Worcester and New Hampshire - Category: Consumer Health News Authors: Tags: Boston News Health Healthwatch Syndicated Local Dr. Mallika Marshall Health News Heart Disease Heart Failure Mammograms Source Type: news
This study included 516 women who underwent CESM imaging for screening and diagnostic purposes between 2012 and 2015 in a single center. BPE at CESM images was retrospectively, independently and blindly graded by six experienced radiologists using the following scale: minimal, mild, moderate, or marked. Agreement between readers was estimated using Kendall's W coefficient of concordance. Associations between clinical factors and BPE, and between BPE and breast cancer were examined using generalized estimating equations. Association between BPE and breast cancer was assessed for the whole study group, and for the screening ...
Source: Academic Radiology - Category: Radiology Source Type: research
This study does not go into detail about the extent to which these comorbidities may influence the increased risk of cancer in psoriasis patients. People with severe psoriasis often do not get enough relief with topical therapies (ones applied to the skin), such as topical corticosteroids and vitamin D analogues. They may then be started on medications that target specific immune cells and proteins. Some of these medications increase the risk of infections. Previous studies have found little to no increased risk of cancer in patients receiving these therapies. Other treatments, such as phototherapy (light therapy), are kno...
Source: Harvard Health Blog - Category: Consumer Health News Authors: Tags: Cancer Skin and Hair Care Source Type: blogs
Mammograms can save lives, but in some cases, insurance companies are refusing to cover follow-up tests ordered by doctors.
Source: Health News: CBSNews.com - Category: Consumer Health News Source Type: news
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