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.

Iodine contrast being loaded into a contrast injector in preparation for a cardiac CT scan at Duly Health and Care in Lisle, Illinois. The contrast shortage is causing some healthcare organizations to postpone exams and procedures and ration contrast supplies. Photo by Dave Fornell

Substituting iodinated contrast media in patients with a history of ICM reactions reduces risk by 61%

“For patients with a prior ICM-induced hypersensitivity reaction, healthcare providers must balance the benefit of ICM reuse against the risk of a repeat reaction,” authors of a new meta-analysis published in Radiology said.

contrast shortage

Generic, FDA approved contrast agent set to hit the market in wake of nationwide shortage

On July 18 Fresenius Kabi announced that they are rolling out a line of generic contrast media products, starting immediately with Iodixanol Injection USP. 

Contrast shortage update: FDA opens door for U.S. providers to order foreign-labeled Bayer contrast media

Per Bayer’s communications, the contrast agent is manufactured at the same site in Berlin, Germany as the Ultravist that is intended for U.S. markets, but due to its intended distribution abroad it lacks current FDA-approved labeling. 

Contrast shortage update: Supplies could continue to lag until September

GE previously indicated that the iodinated contrast shortage would resolve by the end of June.

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Measures associated with hospital readmission of pancreatitis patients

Beyond readmission, 32.9% of patients with increased pancreatic necrosis volumes required additional invasive interventions.

enlarged parathyroid gland

Routine CT scans offer opportunistic assessments of the parathyroid gland

Such assessments could “decrease existing diagnosis gaps,” according to a new study published in Academic Radiology

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Cardiologists push back on FDA’s thyroid monitoring/contrast media proposal

According to a new SCAI statement, the FDA's recommendation would result in "far-reaching consequences" across multiple specialties. 

Contrast shortage update: House Members urge President Biden to intervene

Members who signed the letter were particularly critical of the fact that the shortage is a result of COVID lockdowns in China, stating that this crisis brings to light “the urgent need to establish an outbound investment review process to ensure that critical capabilities are not being offshored ..."

Around the web

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.

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.

The newly cleared offering, AutoChamber, was designed with opportunistic screening in mind. It can evaluate many different kinds of CT images, including those originally gathered to screen patients for lung cancer. 

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