Resources: Page 473

Stroke CAD system shows promise
By Erik L. Ridley
Education Exhibit | LL-INE1188-WEA | Lakeside Learning CenterThis exhibit will present software for computer-aided detection (CAD) of stroke for automatic identification, localization, and volume estimation of ischemic infarcts in unenhanced CT images.
November 10, 2010
Perfusion brain CT performed at normal head CT doses
By Eric Barnes
Friday, December 3 | 11:10 a.m.-11:20 a.m. | SST14-05 | Room S403BIn brain perfusion CT, multiple time-resolved images are needed to track the flow of contrast through the brain, leading to higher radiation doses in the range of 300-500 mGy. But researchers from the Mayo Clinic in Rochester, MN, can do it with less radiation -- down to 75 mGy -- using a gradient adaptive bilateral filter noise reduction algorithm.
November 10, 2010
High image quality seen in high-pitch cardiac DSCT
By Eric Barnes
Friday, December 3 | 10:30 a.m.-10:40 a.m. | SST03-01 | Room S502ABHigh-pitch cardiac CT is becoming an important new method of scanning the thorax quickly and at very low doses. A group from Medical University of Vienna tried it on a 128-slice dual-source CT (DSCT) scanner and came up with excellent results versus other scanning methods.
November 10, 2010
Dynamic myocardial stress CT perfusion appears feasible and accurate
By Eric Barnes
Wednesday, December 1 | 10:30 a.m.-10:40 a.m. | SSK03-01 | Room S503ABCardiac MRI could potentially face some competition from adenosine-stress first-pass myocardial CT perfusion, according to an initial study from the Medical University of South Carolina in Charleston. The study won an RSNA trainee research prize for Markus Weininger, MD, who will discuss his group's initial experience with the dual-source CT technique.
November 10, 2010
Quantitative CT evaluates emphysema, air trapping
By Eric Barnes
Tuesday, November 30 | 10:40 a.m.-10:50 a.m.| SSG03-02 | Room S504ABIf individualized medicine is the new mantra, emphysema evaluation is one of its most promising potential applications. Radiologists from National Jewish Health in Denver compared quantitative CT measurements of emphysema to physiologic measures of disease severity.
November 10, 2010
320-detector-row perfusion CT nabs malignant lung nodules
By Eric Barnes
Tuesday, November 30 | 9:15 a.m.-9:25 a.m. | VC31-04 | Room S404CDDistinguishing malignant from benign lung nodules using PET is tricky business, notably because not all lung cancers are glucose-avid. But in this Tuesday morning presentation, researchers from Kobe, Japan, will discuss how they found that perfusion CT on a 32-detector-row scanner and MRI both perform better than PET/CT for distinguishing malignant from benign nodules.
November 10, 2010
Automatic kV selection tool simplifies scans
By Eric Barnes
Tuesday, November 30 | 8:35 a.m.-8:45 a.m. | VV31-02 | Room E353ATo reduce CT radiation exposure, radiologists have gotten used to adjusting kV based on body mass index and the diagnostic task at hand. But how about doing it quantitatively and automatically?
November 10, 2010
VC findings in Medicare patients similar to younger population
By Eric Barnes
Monday, November 29 | 3:40 p.m.-3:50 p.m. | SSE08-05 | Room E450BIn this scientific session, researchers from the Mayo Clinic in Rochester, MN, will discuss the examination of more than 1,000 Medicare-aged patients with virtual colonoscopy. Their results showed the prevalence of polyps and extracolonic findings to be similar to those of younger populations.
November 10, 2010
Obesity no barrier to renal stone discrimination in dual-energy CT
By Eric Barnes
Monday, November 29 | 11:10 a.m.-11:20 a.m.| SSC14-05 | Room S403BIncreased image noise seen in CT scans of obese patients does not prevent accurate discrimination of renal stone types -- provided additional filtration is used, according to a study from the Mayo Clinic in Rochester, MN, to be presented on Monday.
November 10, 2010
CT drives imaging growth in emergency departments
By Eric Barnes
Monday, November 29 | 9:05 a.m.-9:15 a.m. | VE21-02 | Room N227Imaging utilization in emergency departments has grown every year from 2000 to 2008 -- but CT is far and away the biggest driver of imaging utilization, according to Vijay Rao, MD, and colleagues from Thomas Jefferson University in Philadelphia. And it's mostly radiologists doing it.
November 10, 2010
Pulmonary CTA accurately predicts right ventricular dysfunction
By Eric Barnes
Sunday, November 28 | 1:00 p.m.-1:30 p.m. | LL-ERS-SU2B | Lakeside Learning CenterPulmonary CT angiography (CTA) could potentially replace a biomarker used to assess right ventricular dysfunction, according to a novel study to be presented on Sunday by researchers from the Medical University of South Carolina in Charleston.
November 10, 2010
Triple-rule-out plus CAD gets the nodules radiologists miss
By Eric Barnes
Sunday, November 28 | 12:30 p.m.-1:00 p.m. | LL-ERS-SU2A | Lakeside Learning CenterTriple-rule-out scans are often read by emergency department radiologists with concern about their patients' chest pain, but who often have no subspecialty training in thoracic radiology. Lung nodules will be missed. Fortunately, computer-aided detection (CAD) might help find them.
November 10, 2010
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