Resources: Page 497

GE highlights dual-energy CT, MRI elastography at RSNA booth
By Brian Casey and Erik L. Ridley
CHICAGO - A new dual-energy CT mode, an MRI elastography technique, and a cost-effective mammography system are among the highlights in the RSNA booth of GE Healthcare.
November 29, 2009
2009 11 30 10 58 05 825 Image 5 Mono Color Map Thumb
Surveillance polyps show little growth at follow-up
By Eric Barnes
CHICAGO - A preliminary study from Italy adds weight to the argument that two- to three-year surveillance of 6- to 9-mm polyps doesn't unduly increase the risk of colorectal cancers. Diminutive polyps grow faster but present less cause for concern.
November 29, 2009
2009 11 29 17 42 09 382 Neri histology bottom
Elastography can reduce unnecessary biopsies
By Kate Madden Yee
CHICAGO - Elastography has the potential to reduce unnecessary biopsies, according to a study from Elizabeth Wende Breast Care in Rochester, NY, presented at the RSNA meeting on Sunday.
November 29, 2009
2009 11 29 17 04 47 435 Elasto Destounis Thumb
F-18 fluoride PET/CT may better manage painful bone metastases
By Wayne Forrest
CHICAGO - Fluorine-18 (F-18) fluoride ion PET/CT may help predict which metastatic lesions will be painful in the thoracolumbar spine, potentially leading to better preventive treatment for those patients, according to researchers from Stanford University.
November 28, 2009
Perfusion MRI helps direct brain tumor treatment
By Edward Susman
CHICAGO - Brazilian researchers say that perfusion MRI with a dynamic susceptibility contrast-enhanced technique may allow doctors to determine the best ways of treating patients with brain malignancies, according to a presentation on Sunday at this week's RSNA conference.
November 28, 2009
Electrocardiogram pulsing, adaptive pitch cut coronary CTA dose
By Eric Barnes
Educational Exhibit | LL-PH4828-L09 | Lakeside CenterTwo important dose reduction techniques are illustrated in this exhibit: adaptive electrocardiogram-pulsing and adaptive pitch selection. The rationale and physics behind these techniques are discussed and, more important, illustrated with the aid of real-world examples and cases, according to CT physicist Marcel van Straten, Ph.D., from Friedrich-Alexander University Erlangen-Nuremberg in Germany.
November 15, 2009
ASIR reconstruction cuts CT perfusion dose
By Eric Barnes
Friday, December 4 | 10:30 a.m.-10:40 a.m. | SST15-01 | Room S404ABWith the rise in CT perfusion for numerous diagnostic tasks -- like cerebral blood flow assessment and follow-up for cancer patients -- the higher radiation doses associated with perfusion can be troubling. But adaptive statistical iterative reconstruction (ASIR) technique can reap the benefits with lower radiation dose, according to this Friday morning presentation.
November 15, 2009
Coronary CTA software matches QCA for stenosis grading
By Eric Barnes
Thursday, December 3 | 11:50 a.m.-12:00 p.m. | SSQ03-09 | Room S530ABThe evaluation of coronary arteries in coronary CT angiography (CTA) is essentially a visual task, presenting the problem of subjectivity. Quantitative coronary angiography (QCA) was developed to sidestep this problem, becoming the gold standard for evaluating percentage of stenosis. Now software has been developed to quantify stenosis percentage in MDCT; this study aimed to evaluate its performance compared to QCA.
November 15, 2009
Mannitol in water outperforms iodinated oral contrast
By Eric Barnes
Thursday, December 3 | 11:00 a.m.-11:10 a.m. | SSQ08-04 | Room E353CThe use of mannitol as an endoluminal contrast agent increases diagnostic efficacy in bowel pathology, handily beating iodinated contrast and water alone, according to research from Kasturba Medical College in Manipal, India.
November 15, 2009
Perfusion CT improves distinction of benign versus malignant lymph nodes
By Eric Barnes
Thursday, December 3 | 10:30 a.m.-10:40 a.m. | SSQ13-01 | Room N228Perfusion CT offers additional functional information for the characterization of lymph nodes, which is useful for distinguishing benign from malignant nodes, according to a research team from India with extensive experience in perfusion imaging.
November 15, 2009
High-pitch DECT unfazed by squirming kids
By Eric Barnes
Wednesday, December 2 | 3:10 p.m.-3:20 p.m. | SSM19-02 | Room N230Judging from the results of a phantom study using dual-energy CT (DECT), infants will soon be able to squirm and fuss all they want without blurring the images. Lead author Cynthia McCollough, Ph.D., told AuntMinnie.com there's a lot of excitement around the use of high-pitch scanning in children to facilitate the whole process.
November 15, 2009
Few CIN cases among at-risk contrast-enhanced CT patients
By Eric Barnes
Wednesday, December 2 | 11:30 a.m.-11:40 a.m. | SSK11-07 | Room S102DThe Netherlands guidelines issued in 2007 for administering iodine-based contrast media recommend determining renal function before contrast-enhanced CT in patients 60 years and older with diabetes mellitus, heart failure, vascular disease, hypertension, history of renal disease, or urologic disease. Radboud University Nijmegen Medical Center researchers sought to update the guidelines with the assessment of their CT population of 319 consecutive patients scanned over two weeks.
November 15, 2009
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