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

Glutamate imaging better than MR spectroscopy in first 3 hours after ischemic stroke

2014-05-07
(Press-News.org) Leesburg, VA, May 5, 2014—Glutamate imaging reveals ischemic lesions in the first 3 hours after stroke that are not distinguishable in T1-weighted and T2-weighted imaging.

Researchers using chemical exchange saturation transfer (CEST), an emerging MRI technology, have found that using glutamate with CEST shows high spatial resolution in vivo. The finding has the potential to speed diagnosis—and, therefore, treatment—in the critical first hours after a stroke.

"I have been interested in glutamate imaging since its inception," said researcher Zhuozhi Dai of Second Affiliated Hospital of Shantou University Medical College, Shantou, China. "Being able to evaluate glutamate in the brain could be of great benefit in the clinical setting."

INFORMATION: Dr. Dai presented the study on Monday, May 5 at the 2014 ARRS Annual Meeting in San Diego, CA. Founded in 1900, ARRS is the first and oldest radiology society in the United States and is an international forum for progress in radiology. The Society's mission is to improve health through a community committed to advancing knowledge and skills in radiology. ARRS achieves its mission through an annual scientific and educational meeting, publication of the American Journal of Roentgenology (AJR) and InPractice magazine, topical symposia and webinars, and print and online educational materials. ARRS is located in Leesburg, VA.


ELSE PRESS RELEASES FROM THIS DATE:

New study examines premature menopause and effects on later life cognition

2014-05-07
Premature menopause is associated with long-term negative effects on cognitive function, suggests a new study published today (7 May) in BJOG: An International Journal of Obstetrics and Gynaecology (BJOG). The average age of menopause is around 50 years in the Western World. Premature menopause refers to menopause at or before 40 years of age, this could be due to a bilateral ovariectomy, (surgically induced menopause)or non-surgical loss of ovarian function (sometimes referred to as 'natural' menopause). The study, based on a sample of 4868 women, used cognitive tests ...

Image-guided peritoneal dialysis catheter placement significantly reduces complications

2014-05-07
Leesburg, VA, May 7, 2014— Patients undergoing peritoneal dialysis catheter placement via fluoroscopy and ultrasound-guidance experienced significantly fewer complications at 1 year post-insertion than did patients whose catheters were placed laparoscopically. The first of two study groups received catheters using fluoroscopy and ultrasound guidance under conscious sedation by interventional radiologists. In the second group, the catheters were inserted using laparoscopy under general anesthesia by surgeons. "Our results showed that the overall complications at 1 ...

Iterative reconstruction techniques reduce radiation dose for pediatric brain CT

2014-05-07
Leesburg, VA, May 7, 2014—A study conducted at Massachusetts General Hospital and Harvard Medical School found that estimated radiation doses are substantially lower for pediatric CT exams of the brain that used an adaptive statistical iterative reconstruction technique (ASIR) compared to those that did not use ASIR. The researchers found that the brain and salivary gland doses were much lower for ASIR-enabled exams compared to those without ASIR technique. However, no differences in the estimated organ doses were found for the thyroid gland, skeleton, and eye lenses across ...

Nonscreened patients with breast cancer need more treatment than screened patients

2014-05-07
Leesburg, VA, May 6, 2014—Screening 40- to 49-year-old women for breast cancer has additional benefits beyond the proven decrease in mortality rate. Patients screened with mammography are statistically less likely to undergo chemotherapy, avoiding the associated toxic morbidities. Screening mammography also helps identify a subset of patients at increased risk of breast cancer by diagnosing high-risk lesions. The majority of high-risk lesions identified in a retrospective chart review were found in screened patients. Identifying patients at high risk may allow for the ...

Overestimation of radiation exposure may keep women from critical screening

2014-05-07
Leesburg, VA, May 5, 2014—Misinformation and misunderstanding about the risks associated with ionizing radiation create heightened public concern and fear, and may result in avoidance of screening mammography that can detect early cancers. In a study to determine the baseline understanding of the radiation associated with mammography among patients presenting for initial or follow-up imaging, women were asked to rate the amount of radiation received in a single mammogram as being significantly less, slightly less, about the same, slightly more, or significantly more compared ...

EARTH Magazine: Naturally occurring methane found in groundwater in New York

2014-05-07
Alexandria, Va. – Since hydraulic fracturing operations began in the Marcellus Shale region, debate has raged over whether drilling operations are causing high levels of methane in drinking-water wells. But few systematic scientific studies have been published to date, so it's unknown if high methane levels are natural or the result of contamination from nearby gas wells. Now, a new study is adding some much-needed baseline data for methane levels in groundwater in New York. The results suggest that at least in some cases methane occurs at naturally high levels in groundwater. Read ...

NASA watching year's first tropical low headed for southwestern Mexico

NASA watching years first tropical low headed for southwestern Mexico
2014-05-07
There's a tropical low pressure area in the Eastern Pacific Ocean today, about 8 days before the official Eastern Pacific hurricane season begins. NOAA's National Hurricane Center is giving it a 50 percent chance of becoming a tropical depression in the next two days, and NASA's Aqua satellite passed overhead to gather infrared data on it. NASA's Aqua satellite passed over developing tropical low pressure system 90E on May 8 at 08:41 UTC (4:41 a.m. EDT) and infrared data from the Atmospheric Infrared Sounder (AIRS) instrument aboard, showed that some of the thunderstorms ...

Automated CT dose-tracking software effectively monitors dosage in a clinical setting

2014-05-07
Leesburg, VA, May 5, 2014—Dose-tracking software provides effective and easy monitoring of radiation dose exposure in a busy academic practice, according to research conducted at Massachusetts General Hospital. For commonly ordered abdominal CT exams, iterative reconstruction techniques enabled approximately 50 percent radiation dose reduction compared to the national averages reported in the Dose Index Registry*. "A busy practice with diverse CT technology and remote scanner locations encounters challenges in assessing institutional performance in lowering radiation ...

Breast tomosynthesis after screening mammography reduces need for ultrasound, biopsies

2014-05-07
Leesburg, VA, May 5, 2014—Breast tomosynthesis in the diagnostic workup for one- or two-view focal asymmetry detected at screening mammography resulted in less use of ultrasound, fewer biopsies, and higher positive predictive value for cancer than when diagnostic exams involved only 2D mammography, according to a study conducted at the University of Virginia. "Tomosynthesis has been evaluated in screening populations and been shown to decrease recall rates," said researcher Brandi Nicholson, "but studies in the diagnostic setting are lacking." Five hundred thirty ...

CT-guided irreversible electroporation safe in unresectable pancreatic carcinoma

2014-05-07
Leesburg, VA, May 6, 2014—A small group of patients with locally advanced unresectable pancreatic carcinoma suffered no major ill effects—pancreatitis or fistula formation—after undergoing percutaneous CT-guided irreversible electroporation (IRE)—a nonthermal ablation technology that is safe near vascular and ductal structures—as a therapy. "Our findings exceeded our expectations," said Maria Paola Belfiore, a researcher at the Institute of Radiology, Second University of Naples. "In fact, three patients were downstaged, and so had a greater life expectancy. This is a ...

LAST 30 PRESS RELEASES:

Injectable breast ‘implant’ offers alternative to traditional surgeries

Neuroscientists devise formulas to measure multilingualism

New prostate cancer trial seeks to reduce toxicity without sacrificing efficacy

Geometry shapes life

A CRISPR screen reveals many previously unrecognized genes required for brain development and a new neurodevelopmental disorder

Hot flush treatment has anti-breast cancer activity, study finds

Securing AI systems against growing cybersecurity threats

Longest observation of an active solar region

Why nail-biting, procrastination and other self-sabotaging behaviors are rooted in survival instincts

Regional variations in mechanical properties of porcine leptomeninges

Artificial empathy in therapy and healthcare: advancements in interpersonal interaction technologies

Why some brains switch gears more efficiently than others

UVA’s Jundong Li wins ICDM’S 2025 Tao Li Award for data mining, machine learning

UVA’s low-power, high-performance computer power player Mircea Stan earns National Academy of Inventors fellowship

Not playing by the rules: USU researcher explores filamentous algae dynamics in rivers

Do our body clocks influence our risk of dementia?

Anthropologists offer new evidence of bipedalism in long-debated fossil discovery

Safer receipt paper from wood

Dosage-sensitive genes suggest no whole-genome duplications in ancestral angiosperm

First ancient human herpesvirus genomes document their deep history with humans

Why Some Bacteria Survive Antibiotics and How to Stop Them - New study reveals that bacteria can survive antibiotic treatment through two fundamentally different “shutdown modes”

UCLA study links scar healing to dangerous placenta condition

CHANGE-seq-BE finds off-target changes in the genome from base editors

The Journal of Nuclear Medicine Ahead-of-Print Tip Sheet: January 2, 2026

Delayed or absent first dose of measles, mumps, and rubella vaccination

Trends in US preterm birth rates by household income and race and ethnicity

Study identifies potential biomarker linked to progression and brain inflammation in multiple sclerosis

Many mothers in Norway do not show up for postnatal check-ups

Researchers want to find out why quick clay is so unstable

Superradiant spins show teamwork at the quantum scale

[Press-News.org] Glutamate imaging better than MR spectroscopy in first 3 hours after ischemic stroke