Eric Barnes

CT
Perfusion CT protocols vary, but all require dose/quality tradeoffs
The growing field of perfusion CT imaging has great potential to offer diagnostic information that other imaging methods cannot -- in tasks such as distinguishing cancer from vascular malformations, comparing perfusion patterns in two kidneys, or assessing blood flow to different parts of the brain.
November 12, 2009
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CT
VC screening maintains performance in Medicare population
Screening with virtual colonoscopy is as useful for older individuals as it is in the general population 50 years and older. Although Medicare-aged screening participants present with higher rates of extracolonic lesions, advanced adenoma findings are remarkably similar between the two groups, according to researchers at the University of Wisconsin.
November 8, 2009
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Image Processing
Automated segmentation could improve fetal heart echo
A new method of segmenting the fetal heart with echocardiography could improve the evaluation of congenital heart defects compared to the time-consuming manual segmentation in use today, according to researchers from the U.K.
November 5, 2009
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CT
AuntMinnie.com CT Insider
November 4, 2009
Nuclear Medicine
CMS cuts SPECT MPI payments 36%, sets CCTA rates
Cardiac imaging is scheduled for reimbursement cuts -- including a 36% hack at SPECT myocardial perfusion imaging (MPI) -- under the final Medicare Physician Fee Schedule for 2010. On the plus side, the U.S. Centers for Medicare and Medicaid Services (CMS) also published base rates for coronary CT angiography (CCTA) and increased cardiac PET reimbursement by about 17%.
November 4, 2009
CT
CT lung CAD helps readers differently
Readers of varying skill levels perform significantly better when they use computer-aided detection (CAD) to find lung nodules on CT scans, according to a new study. But while CAD tends to equalize performance among readers of varying skills, readers perform differently based on experience levels, presentation order of candidate nodules, and total time spent reading a case.
November 3, 2009
CT
AuntMinnie.com Virtual Colonoscopy Insider
November 2, 2009
CT
Meta-analysis reveals paucity of advanced neoplasia in small polyps
The prevalence of advanced neoplasia in subcentimeter polyps is extremely rare, according to a new meta-analysis of virtual colonoscopy data from more than 20,000 patients. As a result, the study authors believe that it's unnecessary to incur the costs and risks associated with resecting diminutive colorectal lesions detected at VC.
November 1, 2009
CT
VC CAD nabs undetected polyps in jumbo screening study
RESTON, VA - The largest trial to date using computer-aided detection (CAD) to analyze virtual colonoscopy images indicates that CAD can find polyps that a panel of expert readers missed in asymptomatic subjects, according to a presentation at this week's International Symposium on Virtual Colonoscopy.
October 28, 2009
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CT
How 2009 went right and wrong: VC's own worst enemies
RESTON, VA - Opening this week's International Symposium on Virtual Colonoscopy, course director Dr. Matthew Barish and others assessed the development of VC over the past decade, finding fault with radiologists, gastroenterologists, and the government, while looking at what went right for VC as well.
October 27, 2009
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Ai Hand
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.
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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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Researchers talk breast cancer disparities with AuntMinnie.com
By Amerigo Allegretto
University of Texas Southwestern Medical Center spoke with AuntMinnie.com on challenges breast radiologists face when addressing health disparities.
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Is human-AI ‘symbiosis’ the path forward in chest radiography?
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Human-AI symbiosis – rather than totally autonomous AI – should be the current goal for AI in chest radiography.
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CT shows that functional limitations persist 6 months after TBI
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CT reveals that functional limitations after sports-related traumatic brain injury (TBI) -- even mild impacts -- persist six or more months after injury, researchers have reported.
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DCE-MRI determines women at high recurrence risk of breast cancer
By Amerigo Allegretto
DCE-MRI can help distinguish women with high recurrence risk of breast cancer from those with low recurrence risk.
January 24, 2024
Examples of quantification of background parenchymal enhancement (BPE) over fibroglandular tissue (FGT) on breast DCE-MRI scans from three patients. Images from left to right are the first postcontrast T1-weighted images, automated segmentation of the right and left breasts (red contours) and semiautomated tumor segmentation (yellow), automated segmentation of FGT (green), and quantification of BPE (purple) over the FGT regions. (A) Images of a 48-year-old woman diagnosed with invasive ductal carcinoma and assigned a low-risk Oncotype DX distant recurrence risk score (score, 13). The BPE measures at 20% cutoff value were ipsilateral absolute BPE within FGT relative to FGT volume (%BPEF/F) of 9.8% and contralateral %BPEF/F of 9.5%. (B) Images of a 60-year-old woman diagnosed with invasive ductal carcinoma and assigned an intermediate-risk Oncotype DX distant recurrence risk score (score, 19). The BPE measures at 20% cutoff value were as follows: ipsilateral %BPEF/F of 13.3% and contralateral %BPEF/F of 14.7%. (C) Images of a 54-year-old woman diagnosed with invasive ductal carcinoma and assigned a high-risk Oncotype DX distant recurrence risk score (score, 30). The BPE measures at 20% cutoff value were as follows: ipsilateral %BPEF/F of 34.1% and contralateral %BPEF/F of 14.5%. Image courtesy of the RSNA.
Australian radiologist charged with DUI
By Edna Astbury-Ward
The case of a radiologist who crashed into multiple cars while driving almost three times over the blood-alcohol limit has highlighted the grave risks of addiction.
January 24, 2024
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Nomogram combines ultrasound features to assess thyroid nodules
By Amerigo Allegretto
A nomogram combining ultrasound features and TI-RADS parameters can differentiate between malignant and benign thyroid nodules.
January 24, 2024
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Pluvicto prostate cancer treatment protocols vary globally
By Will Morton
An international survey of treatment centers has revealed significant differences in several aspects of Lu-177 PSMA-617 prostate cancer therapy.
January 23, 2024
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Elastography tracks stiffness changes in breast implants
By Amerigo Allegretto
Shear-wave elastography could be used as an indicator of breast implant rupture risk.
January 23, 2024
(A) Examples of B-mode images for the measurement of membrane thickness of implants from each of the four types of implants. Images are presented at the same scale. Membrane thicknesses (B) and then shear moduli measured by ARFI method (C) are compared without dissociation as a function of prosthesis age or implantation time. (NS: p-value > 0.05, *: p-value < 0.05, **: p-value < 0.01, ***: p-value < 0.001). Images are available for republishing under a Creative Commons license (CC BY-NC-ND 4.0 Deed) and courtesy of the Journal of Biomechanics.
PET imaging reveals brain activity related to alcohol addiction
By Will Morton
PET scans have revealed for the first time what may be a key molecular driver of stress and addiction in people with alcohol use disorder.
January 23, 2024
MRI (top panel) and coregistered F-18 AS2471907 PET images of a healthy control (middle panel) and an age- and sex-matched individual with AUD (bottom panel). Image courtesy of Neurobiology of Stress.
ChatGPT shows potential for assisting in bone tumor diagnosis
By Kate Madden Yee
ChatGPT shows potential in identifying malignant bone tumors on CT imaging, according to a new study.
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Psychosocial factors influence mammography adherence
By Amerigo Allegretto
Psychosocial factors influence how women adhere to breast cancer screening recommendations.
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Few ‘surprise’ patient bills are from radiologists, study finds
By Will Morton
Out-of-network billing by radiologists – often referred to as “surprise billing” – dropped significantly beginning in 2007 and imaging claims are now almost completely in network.
January 22, 2024
Nosurprises
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