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Imaging

 - bleeding_stroke

CT angiography ousted digital subtraction angiography as the most cost-effective modality for diagnosing certain bleeding strokes in an analysis that took into account the prowess of modern scanners. 

 - 3D DTI

It's not fortune telling, although the signs are clear: Early brain imaging helps identify, prevent and treat patents at increased risk for heart attack or stroke. In a meta-analysis study, early brain imaging scans revealed changes to brain structure and function, acting as warning signs of cardiovascular and cerebrovascular events to come.

 - Stroke, endovascular. neuroimaging, neuro

Adding a delayed CT angiography acquisition to an imaging biomarker in patients with spontaneous intracerebral hemorrhage increased the ability to predict hematoma expansion and a poor outcome, according to results published online Oct. 9 in Stroke.

 - brain, stroke

While CT and MR are still the mainstays of detecting ischemic stroke, several SPECT and PET imaging techniques have been developed and are on the way to add comprehensive clinical information in the case of cerebrovascular disease. With this in mind, hybrid imaging such as PET/MR could provide a best-possible map of variables involved in stroke, according to a review published Oct. 9 in the Journal of Nuclear Medicine.

 - arteries, carotod artery

Myocardial MR perfusion may deserve a place in clinical practice for assessing patients for coronary artery disease (CAD). Using a gold standard as reference, researchers gave MR perfusion’s diagnostic ability high marks.

 

More Stories

Flurpiridaz PET MPI data reveal lower dose than conventional SPECT

Myocardial perfusion imaging (MPI) with PET and F-18 flurpiridaz may reduce radiation dose while still providing comparable image quality to SPECT, the current standard, according to a study presented at the recent American Society of Nuclear Cardiology (ASNC) Annual Scientific Session held in Boston from Sept 18-21.

CMR verified myocarditis leads to lower EF at 12 months

In a small group of patients, cardiovascular magnetic resonance (CMR) imaging provided clues to myocarditis diagnosis and outcomes.  Positive “Lake Louise criteria” (LL) was associated with improved left ventricular function recovery, while patients with a negative LL still had lower ejection fraction (EF) at 12 months.

Education, justification & optimization get to heart of safe imaging

The American Heart Association is promoting three pillars to maximize radiation safety in patients who undergo cardiovascular imaging: education, justification and optimization. Several societies endorsed the recommendations, which were published online Sept. 29 in Circulation.

Handheld ultrasound trounces physical exams for accuracy, cost

Cardiologists who used a handheld ultrasound were more likely to make an accurate diagnosis of patients with common cardiovascular abnormalities than colleagues who relied on a physical exam, for an estimated savings of $63 per patient. Handheld ultrasound’s ability to rule out abnormalities also likely would reduce downstream testing, according to a study published online Sept. 17 in the Journal of the American College of Cardiology: Cardiovascular Imaging.

LabCorp pays $85.3M to add LDL testing to its portfolio

LabCorp will pay $85.3 million to buy LipoScience, a company that uses nuclear magnetic resonance (NMR) to conduct cardiovascular diagnostic tests.

Shedding light on stroke outcomes with CTA source images and CBV

Good imaging is critical to focusing on a stroke patient's core and preumbral areas for treatment. An Ottawa research group looked at how computed tomography angiography source images (CTASI) and cerebral blood volume (CBV) could be used to understand outcomes and predict 24-hour infarct in stroke patients undergoing recanalization.

Greyscale IVUS reframes plaque progression in atherosclerosis

A picture says so much, especially in treating patients. To clear up the picture of how atherosclerosis progresses in patients, a group of researchers set their sights on imaging with greyscale intravascular ultrasound (IVUS). 

Plaque texture and volume indicative of vascular risk

Three-dimensional ultrasound used to monitor patients’ plaque qualities showed a clearer picture of vascular risks than using their Framingham score in a study published July 17 in Stroke.

PET helps ID at-risk patients after heart transplants

PET one day may supplant invasive coronary angiography for monitoring heart transplant survivors who are at risk of developing life-threatening cardiac allograft vasculopathy, if preliminary results published online Sept. 2 hold up in larger studies. 

Measuring perfusion defects in SPECT MPI: A quantitative comparison

Three major quantitative softwares offer cardiologists a comprehensive map of myocardial perfusion and function, but they do not always agree, according to a study in the August issue of the Journal of Nuclear Cardiology.

Angiography provides gateway for some inappropriate PCIs

Hospitals that want to reduce inappropriate PCI rates may want to look beyond the cath lab for opportunities. A study published online Aug. 25 in JAMA Internal Medicine identified diagnostic coronary angiography in asymptomatic patients as a red flag for PCI overuse.

 

Appropriate use intervention helps fellows reduce unneeded echo tests

Transthoracic echocardiogram use has been on the rise, but is it always appropriate? Not always, but a physician-centered intervention aimed at improving trainees’ adherence to appropriate use criteria appeared to increase appropriate and decrease inappropriate testing.

DE-CMR offers promise for guiding redo ablations

Delayed-enhancement cardiac MR (DE-CMR) one day may be used to guide reablation procedures to treat atrial fibrillation if results from a feasibility and proof-of-concept study pan out. The study showed DE-CMR accurately identified and localized gaps in patients being reablated because of recurrences.

Cath labs trim radiation dose using modern tech features

Cardiologists at the Cleveland Clinic reduced radiation doses by 22 percent for diagnostic catheterizations and by 32 percent for PCI by leveraging new imaging technology, according to results published online Aug. 5 in Circulation: Cardiovascular Interventions

Fatty meal prior to FDG PET/CT could improve coronary plaque imaging

A new protocol nuclear cardiologists could use to improve identification of coronary plaques involves decreasing F-18 FDG myocardial uptake to reveal more coronary detail in cardiac PET/CT. A high-fat meal prior to fasting seems to do the trick, according to a study published July 31 in the Journal of Nuclear Medicine.

Cardiac PET: Quantitating myocardial blood flow with F-18 flurpiridaz

The quantitative imaging of myocardial blood flow has been gaining momentum in recent years, as is the use of F-18 flurpiridaz, which has been shown to reveal a clear demarcation of disease in patients with CAD, according to a first-in-human quantitative imaging study published July 28 in the Journal of Nuclear Medicine.

CCTA: Shedding light on appropriateness of repeat scans

Guidelines offer some direction on the appropriate use of repeated coronary CT angiography (CCTA), but how often is it actually catching anything of significance? Published July 18 in Circulation: Cardiovascular Imaging, this was the question posed by researchers hoping to guide future use.

LGE helps ID at-risk aortic valve replacement patients

The presence of late gadolinium enhancement (LGE) on cardiac MR predicted perioperative risk and worse survival in patients with severe aortic stenosis who were to undergo surgical aortic valve replacement, according to a study published in the July 15 issue of the Journal of the American College of Cardiology.

PET imaging for myocardial innervation expands with F-18 labeled agent

First-in-human study of an investigational radiotracer, F-18 LMI1195, shows clear imaging of myocardial innervation via the norepinephrine transporter system—tipping off potential adverse cardiac events, according to a study published July 3 in the Journal of Nuclear Medicine.

Gap between imaging, therapy stymies swift stroke care

In treating ischemic stroke, door-to-needle times are important for providing stroke patients with tissue plasminogen activator. However, the time between imaging the brain and initiating therapy appears to the most vulnerable to potential delays.