Technology Report:

Computed Tomography (CT)

Contributing Editor Greg Freiherr offers an overview of computed tomography (CT) advances at the Radiological Society of North America (RSNA) 2015. The video includes Freiherr during his booth tours with some of the key vendors who were featuring new technology.

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Axial chest CT examination in a 54-year-old participant. A, On the axial noncontrast chest CT image, the pectoralis muscle (PM) area was segmented and measured in the section above the aortic arch. B, The subcutaneous adipose tissue (SAT) area as the area between the PM and the skin surface on the same section was also measured and the attenuation of pixels in the SAT area was used to determine the individualized threshold for the intermuscular adipose tissue (IMAT). C, The IMAT within the PM was segmented

Axial chest CT examination in a 54-year-old participant. A, On the axial noncontrast chest CT image, the pectoralis muscle (PM) area was segmented and measured in the section above the aortic arch. B, The subcutaneous adipose tissue (SAT) area as the area between the PM and the skin surface on the same section was also measured and the attenuation of pixels in the SAT area was used to determine the individualized threshold for the intermuscular adipose tissue (IMAT). C, The IMAT within the PM was segmented as the areas with Hounsfield units below this threshold for the IMAT (arrowheads). Image courtesy of the Radiological Society of North America

News | April 07, 2021
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#emphysema #marijuana 2021 ARRS Virtual Annual Meeting research reveals increased rates of emphysema in marijuana smokers, compared to both non-smokers and tobacco-only smokers, as well as greater rates of paraseptal emphysema

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News | April 02, 2021
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While the COVID-19 crisis is challenging, the pandemic is also giving researchers an opportunity to discover new approaches to saving lives. A study published in the JAMA Network Open on Thursday, March 25, 2021, recommends a new way for triaging mammogram patients during times of limited capacity, such as pandemic surges, when individuals may also experience anxiety about COVID-19.

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News | April 01, 2021
April 1, 2021 — While the COVID-19 crisis is challenging, the pandemic is also giving researchers an opportunity to d
Ultimately, because LYFS-CT may exclude minority patients who could benefit from LCS and underestimate the benefits of LCS, the authors of this AJR article suggested "augmenting LCS eligibility for minority patients using combinations of models"--specifically, the PLCOm2012 model in conjunction with LYFS-CT and USPSTF-2020. Image courtesy of American Roentgen Ray Society (ARRS), American Journal of Roentgenology (AJR)

Ultimately, because LYFS-CT may exclude minority patients who could benefit from LCS and underestimate the benefits of LCS, the authors of this AJR article suggested "augmenting LCS eligibility for minority patients using combinations of models"--specifically, the PLCOm2012 model in conjunction with LYFS-CT and USPSTF-2020. Image courtesy of American Roentgen Ray Society (ARRS), American Journal of Roentgenology (AJR)

News | March 29, 2021
March 29, 2021 — According to ARRS' 
Samples from the dataset used in this study. (a) X-ray with PA view of a patient with COVID-19; (b) X-ray with AP view of a patient with COVID-19; (c) X-ray of a healthy patient from Dataset A; (d) X-ray of a healthy patient from Dataset B.

Samples from the dataset used in this study. (a) X-ray with PA view of a patient with COVID-19; (b) X-ray with AP view of a patient with COVID-19; (c) X-ray of a healthy patient from Dataset A; (d) X-ray of a healthy patient from Dataset B. Images courtesy of IEEE/CAA JOURNAL OF AUTOMATICA SINICA

News | March 29, 2021
March 29, 2021 — X-rays, first used clinically in the late 1890s, could be a leading-edge diagnostic tool for...
USPSTF-2020 lung cancer screening guidelines — based solely on age, pack-years, and quit-years — perpetuate eligibility disparities among racial and ethnic minorities, although incorporating certain risk prediction models may help reduce such inequalities

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News | March 26, 2021
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Thirona, an artificial intelligence (AI) software company specialising in medical image analysis, developed an AI algorithm that revolutionizes cystic fibrosis (CF) care. The new algorithm, coined PRAGMA-AI, allows for fast, automated analysis of CT scans of patients with CF to detect and quantify lung abnormalities related to CF
News | March 24, 2021
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The Moscow Center for Diagnostics and Telemedicine presented clinical research findings during ECR 2021 highlighting that full integration of AI into radiology workflow during the pandemic increased radiologists' productivity
News | March 22, 2021
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Neurologica Mobile Stroke Unit includes new CT scanner and features that help EMTs improve patient care
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The RapidAI footprint grew to over 60 countries, with its technology utilized in over 1,800 hospitals
News | March 16, 2021
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 A comprehensive review by University of North Carolina researchers and colleagues of hundreds of publications, incorporating more than two dozen articles on prevention screening for lung cancer with low-dose spiral computed tomography (LDCT), shows there are both benefits and harms from screening

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News | March 15, 2021
March 15, 2021 — A comprehensive review by University of North Carolin...
Siemens Healthineers has announced the Food and Drug Administration (FDA) clearance of the Biograph Vision Quadra, a positron emission tomography/computed tomography (PET/CT) scanner designed for clinical use as well as translational research – or the application of scientific research to create therapies and procedures that improve health outcomes. In this manner, the Biograph Vision Quadra expands precision medicine.
News | March 08, 2021
March 8, 2021 — Siemens Healthineers has announced the Food and Drug Adm...
CT imaging radiation dose tracking software from Imalogix displayed at RSNA 2019.

CT imaging radiation dose tracking software from Imalogix displayed at RSNA 2019. Photo by Dave Fornell.

Feature | March 04, 2021 | By Dave Fornell
More than a decade ago, there was an alarming, rapid rise in ionizing radiation exposure in the U.S.
icobrain cva allows the quantitative assessment of tissue perfusion by reporting the volume of core and perfusion lesion by quantifying Tmax abnormality and CBF abnormality together with the mismatch volume and ratio
News | February 23, 2021
February 23, 2021 — icometrix, world leader in imaging...
Dr Sahar Saleem placing the mummy in the CT scanner

Dr. Sahar Saleem placing the mummy in the CT scanner. Image courtesy of Sahar Saleem

News | February 22, 2021
February 22, 2021 — Modern medical technology is helping scholars tell a more nuanced story about the fate of an anci
Examples of the imaging performance of XPCI-CT (b,e) compared to conventional specimen radiography (a,d) and benchmarked against histopathology (c,f). he top row focuses on the similarity between the XPCI-CT slice in (b) and the histological slice in (c). Arrow 1 indicates margin involvement, arrow 2 a variation in density in the internal structure of the tumour mass, arrow 3 tumour-induced inflammation. All this is confirmed by the histological slice in (c), and hardly visible in the conventional image in

Examples of the imaging performance of XPCI-CT (b,e) compared to conventional specimen radiography (a,d) and benchmarked against histopathology (c,f). he top row focuses on the similarity between the XPCI-CT slice in (b) and the histological slice in (c). Arrow 1 indicates margin involvement, arrow 2 a variation in density in the internal structure of the tumour mass, arrow 3 tumour-induced inflammation. All this is confirmed by the histological slice in (c), and hardly visible in the conventional image in (a). The bottom row focuses on the detection of small calcifications, a key feature in DCIS. These are undetectable in (d), detected in (e), enhanced in the maximum intensity projection (MIP) image at the bottom of (f), and confirmed by histopathology in the top part of (f). The scale bar [shown in (b) and (e)] is the same for all images apart from (f), which has its own scale. Red arrows in (e) and (f) indicate the microcalcifications. Image courtesy of Professor Alessandro Olivo

News | February 22, 2021
February 22, 2021 — A new X-ray imaging scanne
Unhealthy lifestyles, various diseases, stress, and aging can all contribute to an imbalance between the production of ROS and the body's ability to reduce and eliminate them. The resulting excessive levels of ROS cause "oxidative stress".

Unhealthy lifestyles, various diseases, stress, and aging can all contribute to an imbalance between the production of ROS and the body's ability to reduce and eliminate them. The resulting excessive levels of ROS cause "oxidative stress". Graphic courtesy of National Institutes for Quantum and Radiological Science and Technology

News | February 10, 2021
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Materialise engineers coordinated the development of a surgical plan and created an on-screen 3D model based on CT-scans.

Materialise engineers coordinated the development of a surgical plan and created an on-screen 3D model based on CT-scans.

Feature | February 03, 2021
Three-dimensional technologies, developed by Materialise