Imaging Contrast

Contrast agents are injected into patients to help enhance images to make it easier for radiologists distinguish specific areas of the body from surrounding tissues. The most commonly used agents are iodinated contrast dye for computed tomography (CT), interventional cath lab angiography, RF fluoroscopy, and in surgical OR procedures. MRI scans typically use gadolinium-based contrast agents. Ultrasound and echocardiography (cardiac ultrasound) imaging use contrast agents composed of microscopic bubbles to enhance images that otherwise would be suboptimal.

Dual-energy CT systems allow for significant reduction in contrast dose
DECT systems allow for a contrast dose reduction of up to 25% during computed tomography pulmonary angiography exams.
Experts call for more judicious use of contrast, highlighting environmental concerns
New data highlight the significant burden contrast media use places on the environment, prompting experts to call for more stringent use of these agents.
MRI patients willing to commute farther for clinics that use low-dose GBCAs
Data suggest most patients in need of contrast-enhanced MR imaging would prefer lower dose alternatives. Some are willing to go well out of their way to achieve that.
New data highlight 'systemic inconsistencies' in documentation of contrast reactions
Although uncommon and typically not life-threatening, hypersensitivity reactions have increased in recent decades alongside the significant rise in CT use.
'Breakthrough' MRI contrast design could make GBCAs safer, more effective
Researchers are hopeful their new approach to developing MRI contrast will "pave the way for safer, smarter imaging in clinical diagnostics."

Dual-energy CT systems allow for significant reduction in contrast dose

DECT systems allow for a contrast dose reduction of up to 25% during computed tomography pulmonary angiography exams.

Experts call for more judicious use of contrast, highlighting environmental concerns

New data highlight the significant burden contrast media use places on the environment, prompting experts to call for more stringent use of these agents.

MRI patients willing to commute farther for clinics that use low-dose GBCAs

Data suggest most patients in need of contrast-enhanced MR imaging would prefer lower dose alternatives. Some are willing to go well out of their way to achieve that.

New data highlight 'systemic inconsistencies' in documentation of contrast reactions

Although uncommon and typically not life-threatening, hypersensitivity reactions have increased in recent decades alongside the significant rise in CT use.

'Breakthrough' MRI contrast design could make GBCAs safer, more effective

Researchers are hopeful their new approach to developing MRI contrast will "pave the way for safer, smarter imaging in clinical diagnostics."

AI could reduce reliance on gadolinium for contrast-enhanced MRI

New artificial intelligence technology could be used as a complimentary tool alongside low-dose GBCAs to enhance exams without sacrificing image quality.

Hemp and other plant-based compounds could be future of contrast-enhanced imaging

Experts are working to develop agents they say can enhance imaging studies without the risks associated with traditional contrast media.

State law change allows technologists to administer contrast under remote supervision

The update eliminates the requirement for a physician to be on-site and now allows techs to perform venipuncture and conduct contrast administration under remote supervision.