Scientific and Educational Presentations
Physics session on innovation in CT
Can the lumen area of stenosis predict coronary lesion significance?
Sunday, November 30 | 10:45 a.m.-12:15 p.m. | SSA19 | Room S403B
New CT techniques and instrumentation are the focus of a Sunday scientific session that kicks off with a 20-minute physics keynote talk by CT pioneer Willi Kalender, PhD, and continues with presentations of other new technological innovations in CT.
Do positive NLST results persist in a poor, nonwhite, overweight urban population?
Sunday, November 30 | 10:45 a.m.-10:55 a.m. | SSA03-01 | Room S504AB
This study looked at the value of mean lumen area quantification by CT angiography to predict the hemodynamic significance of coronary stenosis at invasive angiography severe enough to require revascularization.
Is epicardial fat linked to atrial fibrillation?
Sunday, November 30 | 10:45 a.m.-10:55 a.m. | SSA04-01 | Room S404CD
A new study looked at lung cancer screening in a population that bears little resemblance to the relatively affluent cohort in the National Lung Screening Trial (NLST), which produced a minimum 20% mortality reduction from screening. Does the successful NLST model still hold true?
Single- vs. dual-energy abdominal CT: Which has the lowest dose?
Sunday, November 30 | 10:55 a.m.-11:05 a.m. | SSA03-02 | Room S504AB
Quantifying epicardial fat on preprocedural CT scans may help identify patients with atrial fibrillation (AF) who will benefit from catheter ablation as a treatment for AF, according to a study to be presented on Sunday.
3D CT fused with electroanatomic mapping for VT ablation
Sunday, November 30 | 11:45 a.m.-11:55 a.m. | SSA06-07 | Room E353A
Triple-phase liver exams are a good way to evaluate CT dose. But which generates the lowest doses: single- or dual-source scanning? This study compared dose levels in 45 patients who had undergone the exam on different occasions with different scanners.
Advanced imaging unveils secrets of ancient artifacts
Sunday, November 30 | 11:55 a.m.-12:05 p.m. | SSA02-08 | Room S502AB
A new technique that fuses cardiac CT and electroanatomic mapping could boost the success rate for ventricular tachycardia (VT) mapping and ablation procedures, a more complex process than ablation for atrial fibrillation and related conditions.
Effective assessment of lung cancer treatment response
Sunday, November 30 | 2:00 p.m.-3:30 p.m. | RC124 | Room N226
A review course taught by Dr. Barry Daly from the University of Maryland will cover a wide range of artifacts, including Egyptian and Peruvian mummies, Mesoamerican and Chinese ceramics, Mesopotamian stucco art, Judaic tabernacles, and European medieval religious artifacts.
Organ-dose software results are highly variable
Monday, December 1 | 8:30 a.m.-10:00 a.m. | RC218 | Room N226
A multispeaker course on treatment response for several kinds of cancer begins at 8:30 a.m. with a talk by Dr. Elena Korngold on a practical perspective of reporting treatment response. Arrive by 9:30 a.m. for the last talk in the series by Dr. Jeremy Erasmus from MD Anderson Cancer Center, who will focus on lung cancer.
Monoenergetic reconstruction tool boosts pancreatic tumor conspicuity
Monday, December 1 | 10:30 a.m.-10:40 a.m. | SSC12-01 | Room S403B
Concerns over radiation dose in CT have led to the development of dose tracking software that estimates organ doses, replacing tedious manual processes. How well do they work? Dr. Atul Padole and colleagues evaluated two software packages.
Increasing difference in x-ray spectra boosts image quality
Monday, December 1 | 10:30 a.m.-10:40 a.m. | SSC04-01 | Room E353A
In pancreatic cancer imaging, conventional methods produce only very faint enhancement differences. Researchers from Germany are finding pancreatic lesions much easier to see using a monoenergetic reconstruction algorithm plus dual-source CT.
Calcium boosts heart attack risk. How about noncalcified plaque?
Monday, December 1 | 10:50 a.m.-11:00 a.m. | SSC12-03 | Room S403B
This study from the Mayo Clinic in Rochester, MN, showed that increasing the difference in the x-ray spectra in dual-energy CT increases image quality, and that this improvement can be translated into reductions in dose.
Motion correction green-lights CCTA in faster hearts
Monday, December 1 | 11:10 a.m.-11:20 a.m. | SSC02-05 | Room S504AB
The role of coronary artery calcium in myocardial infarction risk is well-established, but the role of noncalcified plaque is still evolving. In this study, researchers aimed to determine how total plaque burden corresponds to traditional risk factors for cardiovascular disease.
How often do pancreatic cysts become ductal adenocarcinomas?
Monday, December 1 | 11:50 a.m.-12:00 p.m. | SSC02-09 | Room S504AB
Stopping motion in the fast-beating heart is, of course, one of the toughest challenges in radiology, but new methods such as high-pitch CT and motion correction techniques are fueling new levels of image quality, even in patients with the highest heart rates.
Imaging vulnerable populations -- the geriatric patient
Monday, December 1 | 11:50 a.m.-12:00 p.m. | SSC04-09 | Room E353A
This study evaluated the relationship between pancreatic cysts and pancreatic ductal adenocarcinoma (PDAC), comparing imaging features of the cysts in subjects who subsequently developed PDAC versus those who did not.
Calcium volume, distribution predict rupture risk for TAVR patients
Tuesday, December 2 | 8:30 a.m.-10:00 a.m. | RC308 | Room S502AB
A special course on imaging vulnerable populations will begin at 8:30 a.m. and feature studies on several vulnerable patient groups for which CT plays an important role. Arrive by 9:30 a.m. to hear our highlighted presentation on geriatric patients, presented by Dr. Claudia Sadro.
Study compares 2nd, 3rd generations of iterative reconstruction
Tuesday, December 2 | 10:30 a.m.-10:40 a.m. | SSG02-01 | Room S504AB
Balloon-expandable transcatheter aortic valve replacement (TAVR) procedures can lead to dangerous aortic root injury in the event of annular rupture. How do such ruptures happen and in which patients? Canadian researchers looked at the role of calcified plaque's location and distribution in these events.
Refresher course examines imaging for traumatic brain injury
Tuesday, December 2 | 10:50 a.m.-11:00 a.m. | SSG04-03 | Room E350
Liver lesions are always a challenge to visualize with CT, and iterative reconstruction improves conspicuity in the liver and other regions. How does the latest algorithm stack up against an earlier iteration?
CT colonography keynote: Present and future
Tuesday, December 2 | 4:30 p.m.-6:00 p.m. | RC405 | Room E451A
A Tuesday refresher course on traumatic brain injury will present three speakers beginning at 4:30 p.m. First, Dr. Paul Parizel, PhD, will discuss the use of CT and MR for patients with head trauma.
Is iterative reconstruction a fix for motion-altered calcium scores?
Wednesday, December 3 | 10:30 a.m.-10:50 a.m. | SSK08-01 | Room E351
CT colonography (CTC) expert Dr. Abraham Dachman will start off this year's CTC scientific sessions with a talk on the present and future of the technique.
Study finds ultralow-dose CTC equivalent to normal-dose scans
Wednesday, December 3 | 11:50 a.m.-12:00 p.m. | SSK03-09 | Room S502AB
Dr. Martin Willemink and colleagues from University Medical Center Utrecht in the Netherlands addressed this question with iterative model reconstruction, a calcium hydroxyapatite-containing phantom, and a 256-slice CT scanner.
Does 4D CTA outperform DSA for arteriovenous malformations?
Wednesday, December 3 | 11:50 a.m.-12:00 p.m. | SSK08-09 | Room E351
The need for dose reduction is real in CT colonography (CTC), an exam that could be repeated several times between ages 50 and 80 years, when colorectal cancer screening is recommended. Fortunately, the University of Rome La Sapienza is on the case, working to reduce the dose for CTC to sub-mSv levels consistently.
Knee perfusion is key in limb salvage after trauma
Wednesday, December 3 | 3:00 p.m.-3:10 p.m.| SSM25-01 | Room E450B
Digital subtraction angiography (DSA) is the gold standard for evaluating arteriovenous malformations, but 4D CT angiography (CTA) outperforms it by visualizing the nidus.
CTA dose and image quality: 3rd- vs. 2nd-generation DSCT
Wednesday, December 3 | 3:50 p.m.-4:00 p.m. | SSM25-06 | Room E450B
Trauma patients are typically assessed for salvageability of lower limbs based on a clinical exam and perfusion assessment of the distal arteries. But a group from Texas found that flow in the geniculate artery on CT angiography studies is crucial in determining whether such patients will eventually need an amputation.
CT aims for takeover of scintigraphy in GI bleeding
Thursday, December 4 | 9:35 a.m.-9:45 a.m. | VSVA51-06 | Room E352
How much can dose be reduced in CT angiography (CTA) while preserving image quality in the latest dual-source CT (DSCT) scanners? Dr. Florian Schwarz and colleagues from the University of Munich looked at the image quality and radiation dose-saving potential of advanced dual-source CT.
Chest size swings calcium scores on CT scans
Thursday, December 4 | 11:00 a.m.-11:10 a.m. | SSQ07-04 | Room E353A
Acute lower gastrointestinal bleeding (GI) is a medical and surgical emergency that can lead to significant morbidity and mortality. But how should physicians detect where it comes from? CT does it best, researchers from Pakistan will report in this presentation.
Low-dose, 1-step stroke protocol combines CTA and CTP
Friday, December 5 | 10:50 a.m.-11:00 a.m. | SST03-03 | Room S504AB
Does chest size, since it is related to obesity, affect calcium scores? Dutch researchers aimed to find out, having previously found an association between obesity and coronary calcium scores, and shown that CT image quality deteriorates with increased body weight.
CT ownership growth among otolaryngologists and neurologists: Major trend?
Friday, December 5 | 11:30 a.m.-11:40 a.m. | SST09-07 | Room N226
Researchers in the Netherlands are honing a new one-step stroke imaging protocol that promises to save dose and time, acquiring CT angiography (CTA) of the neck with head CT perfusion (CTP) during a single acquisition.
Cerebral angiographic data reconstructed from time-resolved CTP
Friday, December 5 | 11:00 a.m.-11:10 a.m. | SST10-04 | Room N227
Ear, nose, and throat (ENT) physicians and neurologists are among the physician groups increasingly putting CT scanners in their offices -- bypassing radiologists for in-office exams. How common is the trend?
Friday, December 5 | 11:50 a.m.-12:00 p.m. | SST14-09 | Room S403B
Wavelet analysis is a powerful method of displaying angiographic data from CT perfusion (CTP) and for separating arterial and venous flow patterns. Can it be used to visualize the vascular tree from CTP data in stroke patients, eliminating the need for a separate angiography exam routinely performed for that purpose?
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