Eric Barnes

Interventional
Coronary CTA edges CMR in a tight race
CHICAGO - In a head-to-head comparison of two closely watched modalities, low-dose dual-source coronary CT angiography (CTA) outperformed cardiac MR (CMR) in sensitivity, specificity, and negative predictive value. But 1.5-tesla CMR countered with better specificity and positive predictive value.
November 30, 2009
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CT
High-pitch DSCT offers speedy images equivalent to slow scans
CHICAGO - High-pitch dual-source CT (DSCT) scans speed up scanning without harming image quality in most applications, say researchers from the Mayo Clinic in Rochester, MN.
November 29, 2009
CT
Surveillance polyps show little growth at follow-up
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
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CT
New ACR guidelines overhaul VC practice, training standards
A major revamp of virtual colonoscopy practice guidelines has been published in a white paper by the American College of Radiology (ACR). The update, the first since the ACR Colon Cancer Committee's guidelines debuted in 2005, will affect virtually every aspect of VC practice, from insufflation to radiation dose to training.
November 26, 2009
CT
Cardiac CTA reduces mortality over the long haul, study shows
A study that followed thousands of mostly symptomatic patients for eight years found that those who underwent coronary CT angiography (CTA) were far less likely to die than patients who received standard care.
November 24, 2009
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Interventional
CAD takes on arteries with coronary stenosis detection
A new computer-aided-detection (CAD) application is showing great promise as a companion to coronary CT angiography, recording both high sensitivity and low numbers of false-positive marks, according to researchers from the Medical University of South Carolina.
November 18, 2009
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Cardiac Imaging
AuntMinnie.com Cardiac Imaging Insider
November 15, 2009
CT
Electrocardiogram pulsing, adaptive pitch cut coronary CTA dose
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
CT
ASIR reconstruction cuts CT perfusion dose
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
CT
Coronary CTA software matches QCA for stenosis grading
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
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Nuclear Medicine
LLMs rapidly evolving in nuclear medicine
Large language models (LLMs) are widely used to handle the large volume of text data generated in nuclear medicine.
2025 10 24 Jmri Said Fig2 Thumbnail
MRI
DWI with fat correction identifies liver scarring in MASLD patients
Emergency Sign
Ultrasound
Ghost scans problematic in POCUS trauma exams
Prostate Imaging
Molecular Imaging
PSMA-PET may require selective use to be cost-effective
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Images obtained in a 50-year-old female patient with a new biopsy-proven malignant lesion in the left breast. (A) Craniocaudal mammogram of the right breast does not show any lesion. (B) The malignant lesion corresponds with a 7-cm irregular and spiculated mass on the left craniocaudal mammogram. Ultrasound-guided core-needle biopsy revealed grade 2 invasive lobular carcinoma. (C) The bilateral positron emission mammographic craniocaudal color image obtained one hour after intravenous injection of 185 MBq of F-18-labeled fluorodeoxyglucose (F-18 FDG) shows a mass with intense uptake in the left breast with known cancer and no abnormal uptake in the right breast. Positron emission mammographic craniocaudal images of the left breast obtained (D) one hour and (E) four hours after intravenous injection of 185 MBq of F-18 FDG show no substantial visual difference in uptake of the known cancer. (F) Axial contrast-enhanced fat-saturated subtracted T1-weighted MR image with maximum intensity projection reconstruction obtained 90 seconds after intravenous injection of 0.1 mmol of gadolinium-based contrast material per kilogram of body weight also shows the enhancing mass corresponding to known malignancy (arrow) and marked bilateral background parenchymal enhancement, with multiple nonspecific foci of enhancement in the contralateral breast. The patient opted for bilateral mastectomy, which confirmed left-sided malignancy and no malignancy in the contralateral breast. Image courtesy of the RSNA,
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PET reveals brain’s energy demands during walking
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Data analysis validation. Panel A: Image and line profile through the bottle on scans 1 (top) and 2 (middle), and the difference image (bottom) calculated according to Equation 3. Panel B: Data from a representative participant showing the effect of the dose correction on the PETWALK image using Equation 1 when applied to co-registered images in native subject space. The images were then warped to standard Montreal Neurological Institute (MNI) space Top: PETSTAND, middle – uncorrected PETWALK, bottom – corrected PETWALK. The color bar shows image intensity across the three images. Image courtesy of NeuroImage.
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Image showing bilateral cuneal (magenta) and frontal cortex (brown). Courtesy of eLife/University of Cambridge.
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