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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New amyloid buster significantly hinders Alzheimer’s advance

An experimental Alzheimer’s drug therapy has slowed cognitive and functional decline by 27% versus placebo in a double-blind, randomized study of 1,795 individuals with early signs and symptoms of the disease.

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For monitoring purposes, AI-aided MRI does what liver biopsy does with less risk, lower cost

Patients with autoimmune hepatitis may be better monitored across disease stages by AI-augmented multiparametric MRI than by liver biopsy, as the imaging has proven less costly and is inherently less risky due to its noninvasiveness. 

Ultrafast MRI protocol reduces scan time by 10 minutes for cervical imaging

Experts involved in the study suggested that the protocol could open doors leading to greater utilization of MRI in the future. 

Could a repurposed drug break a centurylong stalemate in the war on cancer?

A pharmaceutical compound approved 21 years ago to treat breast cancer in postmenopausal women is showing fresh promise as a therapy for glioblastomas. 

Newborn brains invigorated by mother’s active lifestyle during pregnancy

The boon comes in the form of greater brain cortical thickness observable on neonatal MRI two weeks after the baby enters the world.

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New cardiac MR technique cuts scan time by more than half

Using a new 4D flow cardiac MRI scan, experts were able to complete cardiac examinations in just eight minutes.

New contrast agent receives FDA approval after competitors collaborate on development

The Sept. 21 announcement states that Gadopiclenol Injection—a highly stable macrocyclic gadolinium-based contrast agent—is approved for use in adult and pediatric patients aged 2 years and older during MRI exams.

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.

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