Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is the gold standard imaging modality for soft tissues. It produces detail cross-sectional images of soft tissue and bone anatomy, including muscles, tendons, ligaments, brain and organs, without the use of ionizing radiation. In addition to orthopedic imaging, MRI is also used for heart, brain and breast. MRI uses gadolinium contrast in many exams to highlight tissues and blood vessels, which enhances images and offers better diagnostic quality. It can also be used in conjunction with PET scans. How does MRI work? MR creates images by using powerful magnets to polarize hydrogen atoms in water (the body is made of of more than 80% water) so they face in one direction. A radiofrequency pulse is then used to ping these atoms, causing them to wobble, or resonate. The MRI coils detect this and computers can assemble images from the signals. Basic MRI scans will focus on the resonance of fat and water in two different sequences, which highlight and contrast different features in the anatomy.

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long covid lung damage in children

New study shows long-term lung damage in children who have recovered from COVID

A new analysis published in Radiology details signs of persistent pulmonary dysfunction in children who have recovered from a COVID infection or who are experiencing symptoms of long-COVID.

Experts describe MRI characteristics of rare breast cancer

The new paper describes the imaging characteristics of metaplastic carcinoma of the breast and correlates the findings with clinical and histopathological characteristics/diagnoses.

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MRI/PSA combo cuts down on unnecessary biopsies in patients with suspected PCa

The strategy of combining the two tests improved specificity and positive predictive value in detecting clinically significant cancer compared to PSA alone.  

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Deep learning reconstruction levels playing field between 1.5T and 3T MRI exams

Denoising using deep learning techniques can boost the performance of 1.5T MR brain imaging, resulting in quality comparable or superior to 3T imaging. 

coronavirus COVID-19 vaccine vaccination

MRI analysis offers new insight into vaccine-related lymphadenopathy in the general population

To date, research pertaining to reactive lymphadenopathy has focused mostly on patients with cancer who are routinely staged and monitored via PET/CT or in women undergoing breast cancer screening and/or imaging with mammography and ultrasound.

Improving MRI reconstructions by combining traditional techniques with new ML tools

“We found that if you tune the classical methods, they can perform very well,” an expert involved in the research said.

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Pediatric TBI study links mild head injuries with behavioral problems in kids

A new analysis revealed that children are at a 15% increased risk of an emotional or behavioral problem if they have experienced a mild TBI.

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New analysis reveals enormous variations in prostate MRI pricing

A total of 37,073 MRI examinations conducted at 552 facilities across the U.S. between January 2010 and March 2020 were included in the analysis.

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Around the web

Cardiovascular Business
Positron partners with Upbeat Cardiology Solutions to improve cardiac PET/CT access

Positron, a New York-based nuclear imaging company, will now provide Upbeat Cardiology Solutions with advanced PET/CT systems and services. 

Cardiovascular Business
Global shortage of nuclear imaging isotopes may be over

The nuclear imaging isotope shortage of molybdenum-99 may be over now that the sidelined reactor is restarting. ASNC's president says PET and new SPECT technologies helped cardiac imaging labs better weather the storm.

Cardiovascular Business
‘A huge win’: CMS significantly increases Medicare payments for cardiac CT

CMS has more than doubled the CCTA payment rate from $175 to $357.13. The move, expected to have a significant impact on the utilization of cardiac CT, received immediate praise from imaging specialists.