Evaluation of reconstruction algorithms for  a stationary digital breast tomosynthesis system using a carbon nanotube X-ray source array.

Evaluation of reconstruction algorithms for a stationary digital breast tomosynthesis system using a carbon nanotube X-ray source array. J Xray Sci Technol. 2020 Sep 10;: Authors: Hu Z, Chen Z, Zhou C, Hong X, Chen J, Zhang Q, Jiang C, Ge Y, Yang Y, Liu X, Zheng H, Li Z, Liang D Abstract Breast cancer is the most frequently diagnosed cancer in women worldwide. Digital breast tomosynthesis (DBT), which is based on limited-angle tomography, was developed to solve tissue overlapping problems associated with traditional breast mammography. However, due to the problems associated with tube movement during the process of data acquisition, stationary DBT (s-DBT) was developed to allow the X-ray source array to stay stationary during the DBT scanning process. In this work, we evaluate four widely used and investigated DBT image reconstruction algorithms, including the commercial Feldkamp-Davis-Kress algorithm (FBP), the simultaneous iterative reconstruction technique (SIRT), the simultaneous algebraic reconstruction technique (SART) and the total variation regularized SART (SART-TV) for an s-DBT imaging system that we set up in our own laboratory for studies using a semi-elliptical digital phantom and a rubber breast phantom to determine the most superior algorithm for s-DBT image reconstruction among the four algorithms. Several quantitative indexes for image quality assessment, including the peak signal-noise ratio (PSNR), the root mean square error (RMSE)...
Source: Journal of X-Ray Science and Technology - Category: Radiology Tags: J Xray Sci Technol Source Type: research

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Medical imaging saves millions of lives each year, helping doctors detect and diagnose a wide range of diseases, from cancer and appendicitis to stroke and heart disease. Because non-invasive early disease detection saves so many lives, scientific investment continues to increase. Artifical intelligence (AI) has the potential to revolutionize the medical imaging industry by sifting through mountains of scans quickly and offering providers and patients with life-changing insights into a variety of diseases, injuries, and conditions that may be hard to detect without the supplemental technology. Images are the largest source...
Source: MDDI - Category: Medical Devices Authors: Tags: Imaging Source Type: news
Breast MRI can produce more false positives on initial screening in women at...Read more on AuntMinnie.comRelated Reading: Bilateral breast MRI needed even after mastectomy Who gets breast cancer treatment during a pandemic? MRI features help predict breast cancer prognosis Shorter MRI works for patients with breast cancer history Breast MRI works as presurgical toolComments: 5/28/2020 3:40:02 AMDaniel Corcos Many high-risk women carry mutations in genes involved in the repair of DNA breaks caused by X-rays. As mammography screening leads to a high cancer incidence in the general population (Corcos &Bleyer,...
Source: AuntMinnie.com Headlines - Category: Radiology Source Type: news
Like everyone, I assume I’ll live forever. Although I often wonder whether anyone would come to my funeral and who would wear black, it never actually occurrs to me that there is an endpoint. It’s almost as if I would come along too to watch proceedings running smoothly and along the lines I wanted. Death was something I thought about, but in a rather abstract, offhand sort of way. It happened, of course I knew I would die at some point, but that point was somewhere out there … way off from here, where I am now. And then I hit a brick wall. The wall consisted of a tiny little bit of blood coughed up in s...
Source: The Hysterectomy Association - Category: OBGYN Authors: Tags: Emotional Health Happiness Thought for the day Women's Health my story Source Type: news
The fiercely contested race to demonstrate how artificial intelligence (AI)...Read more on AuntMinnie.comRelated Reading: C-MIMI: AI could cut mammography workload in half AI shows promise for reducing mammography workload AI enhances radiologist performance for DBT Deep learning enhances breast cancer risk assessment SBI: AI improves DBT's performance in dense tissueComments: 12/1/2019 2:21:59 PMHospital-Rad If I were a resident I would think twice before choosing breast fellowship. Although a mammographer won't be replaced by AI completely, I predict that the work volume will decrease dramatically. Screenings...
Source: AuntMinnie.com Headlines - Category: Radiology Source Type: news
Rayfield Byrd knows when it’s time to wake up every morning. The 68-year-old Oakland, Cal., resident hears a voice from the living room offering a cheery good morning. Except Byrd lives alone. A little after 8 a.m. each day, a small yellow robot named Mabu asks Byrd how he’s doing. Byrd has Type 2 diabetes and congestive heart failure, and about three years ago, he had surgery to implant a microvalve in his heart to keep his blood flowing properly. To stay healthy, he takes four medications a day and needs to exercise regularly. To make sure his heart is still pumping effectively, his doctor needs to stay on to...
Source: TIME: Health - Category: Consumer Health News Authors: Tags: Uncategorized Artificial Intelligence Life Reinvented medicine Source Type: news
CONCLUSION: By using a diverse dataset and comparing the diagnostic accuracy of three imaging modalities commonly used in breast cancer detection and diagnosis, this study also demonstrated that mammography, ultrasonography and MRI had different diagnostic performance in breast tumor identification. Among them, MRI yielded the highest performance even though the unexpected specificity may lead to over-diagnosis, and ultrosonography is slightly better than mammography. PMID: 30103371 [PubMed - as supplied by publisher]
Source: Journal of X-Ray Science and Technology - Category: Radiology Tags: J Xray Sci Technol Source Type: research
[Image from unsplash.com]From ConforMIS touting its knee replacement study to Consulting Radiologists’s new breast cancer detection tool, here are seven medtech stories we missed this week but thought were still worth mentioning. 1. Study: Low-dose CT scanning improves Ankylosing Spondylitis assessment A new study has shown that low-dose computed tomography (LD-CT) is more sensitive than X-rays for monitoring disease progression in people who have Ankylosing Spondylitis, according to a June 15 press release. LD-CT has previously been proven to be sensitive and reliable when assessing bone growth in different pat...
Source: Mass Device - Category: Medical Devices Authors: Tags: Big Data Business/Financial News Cardiac Assist Devices Cardiovascular Clinical Trials Diagnostics Implants Oncology Research & Development Respiratory Cefaly conformis Consulting Radiologists Hemovent Image Stream Medical Me Source Type: news
This post was originally published by  The Health Care Blog  on February 11.  As physicians ready themselves for the future of medicine under onerous MACRA regulations, it seems appropriate to glance into the future and visualize the medical utopia anticipated by so many.  Value-based care, determined by statistical analysis, is going to replace fee for service. Six months ago, I received my first set of statistics from a state Medicaid plan and was told my ER utilization numbers were on the higher end compared to most practices in the region.  This was perplexing as my patients...
Source: Disruptive Women in Health Care - Category: Consumer Health News Authors: Tags: Medicaid Source Type: blogs
Here’s something new and different: Dino defending Radiologists. Oh, I’ve lit into them from time to time over the years, but we are colleagues. And a recent ruling by the Pennsylvania Governor’s office mandating that 3D mammograms, also known as tomosynthesis, be treated exactly the same as previous technology for payment purposes (ie “Free” to patients) is patently unfair to radiologists. Some background: The current technological standard for breast cancer mammography screening consists of taking plain low-dose xray images of compressed (ouch!) breast tissue, either with film or digital tec...
Source: Musings of a Dinosaur - Category: Primary Care Authors: Tags: Medical Source Type: blogs
Conclusion: there is no increased risk of doing the lymph node dissection early on.   Dr. Eggener-CON   Basics Lymph node dissections rarely done, even for large tumors, because there is no proven therapeutic or staging benefit for low risk patients.  A Mayo study revealed no data showing therapeutic benefit in high risk patients.  For clinically node negative high risk patients, there is staging value but no proven therapeutic benefit. Rate of positive nodes is associated with stage and grade; the higher the stage and grade, the more likely there will be positive nod...
Source: Kidney Cancer Association - Category: Urology & Nephrology Source Type: news
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