PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

CT chest findings in marijuana smokers

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

CT chest findings in marijuana smokers
2021-04-01
(Press-News.org) Leesburg, VA, April 1, 2021--A Scientific E-Poster to be presented at the 2021 ARRS Virtual Annual Meeting 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.

"Marijuana smoking is also associated with airways disease, including bronchial wall thickening, bronchiectasis, and bronchiolar mucoid impaction, in comparison to both the control group and tobacco-only group," wrote first author Luke Murtha of Ottawa Hospital in Canada.

Querying imaging reports on Ottawa Hospital's PACS, Murtha and colleagues identified three groups of patients, matched for age and sex: marijuana smokers (n=56); a control group of non-smokers/non-marijuana users (n=57); and a comparison subgroup consisting of tobacco-only smokers (n=33). Two board-certified, fellowship-trained radiologists--blinded to clinical data such as smoking and marijuana history--performed consensus reading of the chest CTs.

In main-group marijuana smoking patients (75%), rates of emphysema were greatly elevated, compared to main-group control patients (5%). Age-matched subgroup analysis demonstrated a significant increase in emphysema in marijuana (93%) patients, compared to tobacco-only smokers (66%), as well as a significant increase in the proportion of paraseptal emphysema (versus other types) in marijuana smokers (53%), when compared to both tobacco-only smokers (24%) and control groups (7%).

Noting the lack of data concerning the physical effects of marijuana on the lungs, "given that marijuana use is increasing, particularly within nations such as Canada, that have legalized the substance, it is important for us, as radiologists, to define specific findings associated with its consumption," the authors of this ARRS Annual Meeting E-Poster concluded.

INFORMATION:

Select press passes are still available for the ARRS 2021 All-Virtual Annual Meeting: https://www.arrs.org/AM21

Founded in 1900, the American Roentgen Ray Society (ARRS) is the first and oldest radiological society in North America, dedicated to the advancement of medicine through the profession of radiology and its allied sciences. An international forum for progress in medical imaging since the discovery of the x-ray, ARRS maintains its mission of improving health through a community committed to advancing knowledge and skills with an annual scientific meeting, monthly publication of the peer-reviewed American Journal of Roentgenology (AJR), quarterly issues of InPractice magazine, AJR Live Webinars and Podcasts, topical symposia, print and online educational materials, as well as awarding scholarships via The Roentgen Fund®.


[Attachments] See images for this press release:
CT chest findings in marijuana smokers

ELSE PRESS RELEASES FROM THIS DATE:

Impact of COVID-19 'Safer at Home' order on radiology utilization

Impact of COVID-19 Safer at Home order on radiology utilization
2021-04-01
Leesburg, VA, April 1, 2021--A Scientific E-Poster to be presented at the 2021 ARRS Virtual Annual Meeting found the COVID-19 "Safer at Home" order resulted in a significant decline in radiology ordering utilization, outpatient consultations, and emergency department (ED) visits. "There was a disproportionate impact in the outpatient setting, especially on screening and other nonessential imaging," wrote Evan Raff of Olive View-UCLA Medical Center, which "mirrors the impact that the order has had on clinical services, as reflected in outpatient consult volumes, ...

From dinner to sustainable electronics, the surprising versatility of crabs

From dinner to sustainable electronics, the surprising versatility of crabs
2021-04-01
Osaka, Japan - As the worldwide demand for electronic devices continues to grow, so too does the strain on the finite resources used in their production, such as metals and fossil fuels. In an effort to provide renewable alternatives, researchers from Osaka University have developed a nanocarbon material for electronics applications made from chitin derived from crab shells. Their findings are published in Journal of Materials Chemistry C. Nanocarbon materials show significant promise for use in electronic devices. In particular, those with porous ...

Historical data offers a glimpse into the mental health of adolescents during COVID-19

Historical data offers a glimpse into the mental health of adolescents during COVID-19
2021-04-01
A team of researchers has sought to mitigate the mental health impacts of COVID-19 on adolescents by harnessing previous research on youth physical and mental health. Their review also drew on the psychological stressors of the 2011 Great East Japan Earthquake and Tsunami on children. The results were published in the Tohoku Journal of Experimental Medicine on March 26, 2021. "We combined past research on the psychological stress on children with present studies on the effects of COVID-19," said Junko Okuyama of the Department of Physical Medicine and Rehabilitation at Tohoku University Hospital and lead author of the study. "We found ...

Exposure to harmful chemicals in plastic may contribute to postpartum depression

2021-04-01
WASHINGTON--Endocrine-disrupting chemicals may influence hormonal shifts during pregnancy as well as contribute to postpartum depression, according to a small study published in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism. Postpartum depression is a serious and common psychiatric disorder that affects up to 1 in 5 childbearing women. The cause of postpartum depression is not well understood, but hormonal changes during pregnancy have been found to be an important factor. Harmful chemicals such as bisphenols and phthalates that are found in plastics and personal care products are known to affect sex hormones. "We found that phthalate ...

Stem cell transplants prevent relapses of most common childhood cancer

Stem cell transplants prevent relapses of most common childhood cancer
2021-04-01
Children and young adults who receive CAR T-cell therapy for the most common childhood cancer - acute lymphoblastic leukemia - suffer remarkably fewer relapses and are far more likely to survive when the treatment is paired with a subsequent stem cell transplant, a new study finds. The research, with an average follow up of nearly five years, suggests that stem cell transplants offer long-term benefits for young patients who receive the cutting-edge immunotherapy. CAR T-cell therapy results in complete remission in 60%-100% of patients initially, but the relapse rate is high. However, among those who received a stem cell transplant after CARs, the relapse rate was less than 10% two years later. "More than 50% of kids in other ...

Cohesive circuit protection for wearable electronics

Cohesive circuit protection for wearable electronics
2021-04-01
Osaka, Japan - Most electronic devices aren't waterproof, much to your irritation if a sprinkler suddenly sprays you while you're talking outside on your cellphone. Some electronics can be made at least water-resistant by, for example, using special glues to fuse outer components together. Flexible electronics are another story. Their sealant materials must be able to bend, yet with current technology it's inevitable that eventually such a sealant will crack or separate from the device--and there goes your water-resistant coating. Researchers are determined to come up ...

3D design leads to first stable and strong self-assembling 1D nanographene wires

3D design leads to first stable and strong self-assembling 1D nanographene wires
2021-04-01
Nanographene is flexible, yet stronger than steel. With unique physical and electronic properties, the material consists of carbon molecules only one atom thick arranged in a honeycomb shape. Still early in technological development, current fabrication methods require the addition of substituents to obtain a uniform material. Additive-free methods result in flimsy, breakable fibers--until now. An international team of researchers has developed self-assembling, stable and strong nanographene wires. The results were published on March 24 in Journal of the American Chemical Society. The team, led by Yasutomo Segawa, associate professor at the Institute for Molecular Science, part of the National Institutes of Natural Science in Japan, ...

HKBU-led research reveals hyocholic acids are promising agents for diabetes prediction and treatment

HKBU-led research reveals hyocholic acids are promising agents for diabetes prediction and treatment
2021-04-01
A series of studies led by researchers from Hong Kong Baptist University (HKBU) have revealed that hyocholic acid and its derivatives (collectively known as HCAs), a component of bile acids that facilitate fat digestion, are a promising risk indicator of type 2 diabetes. The strong efficacy of HCAs in regulating blood glucose levels and protecting against diabetes has also been uncovered. The findings open a window for the development of HCA-based predictive markers as well as anti-diabetic drugs. The research results have been published in the international scientific journals ...

Poor judgment of autistic adults

2021-04-01
Autistic adults can be wrongly perceived as deceptive and lacking credibility, Flinders University researchers say, with this working against many caught in the legal system. Ahead of World Autism Awareness Day (2 April 2021), a new paper in the Journal of Autism and Developmental Disorders asked 1,410 civilians to respond to video recordings with 30 adults with Autism Spectrum Disorder (ASD) and 29 non-ASD individuals to examine whether stereotypical behaviors associated with autism influenced people's perceptions of the individual. Common behaviors include gaze aversion, repetitive body movements, literal interpretations of figurative language ...

Multilingual people have an advantage over those fluent in only two languages

2021-04-01
Multilingual people have trained their brains to learn languages, making it easier to acquire more new languages after mastering a second or third. In addition to demystifying the seemingly herculean genius of multilinguals, researchers say these results provide some of the first neuroscientific evidence that language skills are additive, a theory known as the cumulative?enhancement model of language acquisition. "The traditional idea is, if you understand bilinguals, you can use those same details to understand multilinguals. We rigorously checked that possibility with this research and saw multilinguals' language ...

LAST 30 PRESS RELEASES:

Are lifetimes of big appliances really shrinking?

Pink skies

Monkeys are world’s best yodellers - new research

Key differences between visual- and memory-led Alzheimer’s discovered

% weight loss targets in obesity management – is this the wrong objective?

An app can change how you see yourself at work

NYC speed cameras take six months to change driver behavior, effects vary by neighborhood, new study reveals

New research shows that propaganda is on the rise in China

Even the richest Americans face shorter lifespans than their European counterparts, study finds

Novel genes linked to rare childhood diarrhea

New computer model reveals how Bronze Age Scandinavians could have crossed the sea

Novel point-of-care technology delivers accurate HIV results in minutes

Researchers reveal key brain differences to explain why Ritalin helps improve focus in some more than others

Study finds nearly five-fold increase in hospitalizations for common cause of stroke

Study reveals how alcohol abuse damages cognition

Medicinal cannabis is linked to long-term benefits in health-related quality of life

Microplastics detected in cat placentas and fetuses during early pregnancy

Ancient amphibians as big as alligators died in mass mortality event in Triassic Wyoming

Scientists uncover the first clear evidence of air sacs in the fossilized bones of alvarezsaurian dinosaurs: the "hollow bones" which help modern day birds to fly

Alcohol makes male flies sexy

TB patients globally often incur "catastrophic costs" of up to $11,329 USD, despite many countries offering free treatment, with predominant drivers of cost being hospitalization and loss of income

Study links teen girls’ screen time to sleep disruptions and depression

Scientists unveil starfish-inspired wearable tech for heart monitoring

Footprints reveal prehistoric Scottish lagoons were stomping grounds for giant Jurassic dinosaurs

AI effectively predicts dementia risk in American Indian/Alaska Native elders

First guideline on newborn screening for cystic fibrosis calls for changes in practice to improve outcomes

Existing international law can help secure peace and security in outer space, study shows

Pinning down the process of West Nile virus transmission

UTA-backed research tackles health challenges across ages

In pancreatic cancer, a race against time

[Press-News.org] CT chest findings in marijuana smokers
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