Eric Barnes

Image Processing
MBIR takes on ASIR in low-dose chest CT
Thursday, November 29 | 11:10 a.m.-11:20 a.m. | SSQ03-05 | Room S405ABBoth adaptive statistical iterative reconstruction (ASIR) and model-based iterative reconstruction (MBIR) improve image quality at low doses, but does GE Healthcare's more advanced MBIR algorithm produce noticeably sharper lung images?
November 5, 2012
CT
DECT reduces metal artifact versus single-energy CT
Thursday, November 29 | 10:30 a.m.-10:40 a.m. | SSQ15-01 | Room S102CDual-energy CT (DECT) with rapid kV switching significantly reduced metal artifacts in an animal model, regardless of whether metal artifact reduction software was used, according to a study from Canada.
November 5, 2012
Image Processing
AIDR 3D boosts image quality at half the dose
Wednesday, November 28 | 3:50 p.m.-4:00 p.m. | SSM20-06 | Room S404ABCompared with filtered back projection reconstruction images, CT images processed with adaptive iterative dose reduction (AIDR) 3D have less noise, better low-contrast resolution, better diagnostic image quality, and less artifact, reported researchers from Leiden University Medical Center.
November 5, 2012
Image Processing
Study pinpoints optimal ASIR blend for stomach cancer
Wednesday, November 28 | 3:40 p.m.-3:50 p.m. | SSM08-05 | Room E353BWhat's the best blend of adaptive statistical iterative reconstruction (ASIR) for evaluating gastric cancers for postoperative follow-up? Researchers from South Korea wanted to minimize radiation dose but avoid missing a recurrence, so they systematically analyzed the results of different blends.
November 5, 2012
Image Processing
Cardiac CTA incorporates function, motion analysis
Wednesday, November 28 | 3:40 p.m.-3:50 p.m. | SSM03-05 | Room S502ABA 64-detector-row scanner can deliver anatomic as well as functional information if you follow the lead of Johns Hopkins University researchers, who used the same data for CT angiography (CTA) and cardiac function, motion analysis, and myocardial perfusion information.
November 5, 2012
CT
Technologists are quick on the trigger to repeat head scans
Wednesday, November 28 | 11:10 a.m.-11:20 a.m. | SSK16-04 | Room S403BIn a Canadian study, CT technologists rated head CT image quality lower than radiologists when artifacts were present, making them more prone to repeat scans and expose patients to additional radiation.
November 5, 2012
CT
Virtual high-keV images at DECT cut metal artifact
Wednesday, November 28 | 11:10 a.m.-11:20 a.m. | SSK11-05 | Room N230Virtual high-keV images of spine hardware at dual-energy CT (DECT) show less artifact and are easier to read than conventional CT images, according to a research team from the University of Michigan.
November 5, 2012
CT
320-slice 4D head CTA derived from CTP replaces extra scan
Wednesday, November 28 | 8:55 a.m.-9:05 a.m. | VSNR41-02 | Room E451BA new technique can boost the quality of low-dose head CT perfusion (CTP) to the point where it can replace higher-dose 3D CT angiography (CTA), say Dutch researchers, who will explain their findings in this scientific presentation.
November 5, 2012
CT
ROMICAT II shows CCTA cuts hospital time
Wednesday, November 28 | 8:30 a.m.-8:45 a.m. | VSCA41-01 | Room S502ABThe early use of coronary CT angiography (CCTA) in patients with symptoms suggestive of acute coronary syndromes shortens the length of hospital stay and reduces time to diagnosis, according to researchers from Harvard Medical School and Massachusetts General Hospital.
November 5, 2012
CT
Implementing the ACR's CT dose registry
Tuesday, November 27 | 3:50 p.m.-4:00 p.m. | SSJ21-06 | Room S403AThe University of Washington has implemented the American College of Radiology's (ACR) CT dose registry, documenting a number of challenges relating to software installation, data transmission, and data consistency issues, most of which have been solved, according to researchers.
November 5, 2012
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Radiation Oncology/Therapy
ASTRO: Short prostate SBRT reduces side effects, but not PSA levels
Study findings offer new evidence to help guide treatment decisions for patients with localized prostate cancer, researchers said.
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Radiation Oncology/Therapy
ASTRO: STAR has role in managing VT in cardiac patients
Colorectal Cancer
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5-year CTC screening interval is appropriate for colorectal cancer
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MRI
ASTRO: Daily MRgRT recontouring improves prostate treatment outcomes
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Images depict a 43-year-old woman with a solitary left-sided thyroid nodule classified at gray-scale ultrasound as category U3, upgraded to category U4 at strain elastography, and classified as category Thy4 at cytopathologic examination. Subsequent surgical histopathologic examination confirmed papillary cell carcinoma. (A) Longitudinal view of the left thyroid lobe demonstrates the low reflective nodule (between arrows) measuring 13 × 12 × 11 mm (not shown) and with a halo. (B) A longitudinal image with side-by-side visualization of the nodule (arrow) at gray scale (left) and strain elastography (right). The nodule is predominantly blue, indicating increased stiffness. (C) A longitudinal view shows the needle (arrows) within the stiffer aspect of the nodule for cytology sampling. U and Thy categories are according to British Thyroid Association system. Image courtesy of the RSNA.
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