Eric Barnes

Nuclear Medicine
Analysis favors coronary CTA over stress MPS for chest pain
In most chest pain patients, coronary CT angiography (CTA) surpasses its rival -- stress myocardial perfusion scintigraphy (MPS) -- for diagnosing coronary artery disease, according to the results of a new model analysis comparing the two techniques.
January 14, 2010
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CT
Study reveals lesions most likely to be dismissed by VC CAD
Why do radiologists dismiss true-positive computer-aided detection (CAD) marks at virtual colonoscopy? Are there particular exam or polyp characteristics that lead to incorrect dismissals of CAD marks by radiologists? Researchers from London were eager to find out.
January 13, 2010
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Cardiac Imaging
AuntMinnie.com Cardiac Imaging Insider
January 10, 2010
Image Processing
CTA motion model aims to improve cardiac function analysis
Dutch researchers used an automated coronary artery motion model to analyze cardiac function from electrocardiogram-gated coronary CT angiography (CTA) data. The method promises to improve cardiac function analysis and reconstruction interval selection, and even provide new information on coronary artery motion at different heart rates.
January 10, 2010
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CT
DSCT edges out 64-slice CT in coronary artery imaging
Coronary CT angiography performed on dual-source CT (DSCT) confers a slight advantage in image quality with slightly fewer nondiagnostic vessel segments compared to 64-detector-row CT. Calcification remains a challenge with both types of scanners, but it's slightly less problematic with dual-source systems, say researchers from the University of Rome.
January 7, 2010
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CT
Colonoscopy surveillance barely lowers CRC rates
Despite frequent colonoscopic surveillance, patients whose advanced adenomas had been removed had higher-than-expected rates of colorectal cancer (CRC) at follow-up, according to a new surveillance study that followed patients for more than four years after polypectomy.
January 7, 2010
CT
DSCT technique distinguishes 'rainbow' of kidney stone types
A new dual-source CT (DSCT) technique is able to distinguish between five types of kidney stones, offering the possibility of unprecedented detail in the noninvasive assessment of stone disease. The research could lead to improved management of patients with kidney stones.
January 3, 2010
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CT
AuntMinnie.com CT Insider
December 28, 2009
Image Processing
Automated QCT offers hope for passive osteoporosis screening
A new quantitative CT (QCT) technique offers hope that osteoporosis scans could someday be performed passively -- and automatically -- from abdominal CT scans acquired for other clinical purposes, according to researchers from the U.S. National Institutes of Health in Bethesda, MD.
December 27, 2009
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CT
VC CAD aids experts in detecting intermediate polyps
Computer-aided detection (CAD) can improve the performance of experienced radiologists in detecting intermediate-sized (6- to 9-mm) polyps, but it doesn't help find larger lesions, said researchers from Italy in results presented at the RSNA meeting earlier this month.
December 27, 2009
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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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PCCT improves assessment of coronary artery disease
By Kate Madden Yee
Ultrahigh-spatial-resolution photon-counting detector CT (PCCT) improves the evaluation of coronary artery disease, researchers have found.
February 20, 2024
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Annual breast cancer screening starting at age 40 saves lives
By Amerigo Allegretto
Annual breast cancer screening starting at age 40 yields the most mortality reduction, research indicates.
February 20, 2024
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AI spots unidentified brain tumor on PET imaging
By Will Morton
An AI algorithm designed for brain PET imaging found a glioblastoma in a patient that had gone undetected by physicians.
February 20, 2024
Baseline scan (A), segmentation results (B), and follow-up scan (C) from patient with molecular glioblastoma. Baseline MRI showed FLAIR hyperintensities in left thalamus and frontoparietal region (white arrowheads). In contrast to expert segmentation, in which only left thalamic region showed slightly increased uptake (red contour), AI algorithm identified additional frontoparietal lesion on baseline PET that subsequently progressed to contrast-enhancing and metabolically active lesion (red arrowheads). Image courtesy of the Journal of Nuclear Medicine.
MRI reveals functional brain alterations associated with depression
By Kate Madden Yee
Researchers have found that MRI reveals functional brain alterations that are associated with major depression.
February 20, 2024
Depression
How can radiologists prepare for breast density notification laws?
By Amerigo Allegretto
Lars Grimm, MD, from the Society of Breast Imaging spoke on how breast imaging facilities can best prepare for new breast density notification laws.
February 16, 2024
Screenshot (1072)
Can radiologists’ eye-tracking data enhance AI?
By Will Morton
Integrating eye-tracking data that map how radiologists interpret x-rays into deep learning AI algorithms could be key to developing more “human-centered” AI.
February 16, 2024
Difference between saccades, fixations, and attention heatmaps in radiologist eye-tracking studies. Image courtesy of the European Journal of Radiology.
PI-RADS optimizes MRI-based diagnostics for prostate cancer detection
By Kate Madden Yee
It's better to take Prostate Imaging-Reporting and Data System (PI-RADS) upgrading rules into account when it comes to deciding whether a patient with clinically significant prostate cancer needs a biopsy, researchers have reported.
February 15, 2024
Prostate Cancer
PET links tau pathology to speech changes in unimpaired patients
By Will Morton
Brain pathology associated with Alzheimer’s disease in cognitively unimpaired adults appears to be linked to speech changes.
February 15, 2024
Tau
ADC optimal cutoff reduces MRI-prompted breast biopsies
By Amerigo Allegretto
Applying point-of-care apparent diffusion coefficient (ADC) cutoffs from diffusion-weighted imaging could reduce MRI-prompted breast biopsies.
February 15, 2024
Apparent diffusion coefficient (ADC) measurements for benign and malignant BI-RADS category 4 or 5 lesions at MRI. (A, B) Benign BI-RADS category 4 lesion in a 55-year-old woman. (A) Dynamic contrast-enhanced MRI (DCE-MRI) scan shows a 12-mm, oval, circumscribed, homogeneous mass in the right posterior breast (arrow). (B) On the diffusion-weighted image, the lesion shows high diffusivity (arrow), with an ADC of 2.04 × 10-3 mm2/sec. Biopsy revealed benign fibroadenoma. (C, D) Malignant BI-RADS category 4 lesion in a 41-year-old woman. (C) DCE-MRI scan shows a 24-mm irregular, heterogeneous mass at the 3 o’clock position in the left breast (arrow). (D) On the diffusion-weighted image, the lesion demonstrates low diffusivity (arrow), with an ADC of 0.91 × 10-3 mm2/sec. Biopsy revealed invasive ductal carcinoma. All MRI scans are shown in the axial plane. (E) Box plot shows ADC measurements for 240 BI-RADS 4 and 5 lesions (63 malignant and 177 benign). Both prespecified optimal and conservative ADC cutoffs are indicated on the plot for reference: 1.53 × 10-3 mm2/sec (dashed line) and 1.68 × 10-3 mm2/sec (dotted line), respectively. All ADCs were calculated with maximum b value of 800 sec/mm2. The midline of each box shows the median value, and the box extends from first to third quartiles. The whiskers extend from the first and third quartiles to the smallest and largest values, respectively, if those values are within 1.5 times the IQR. If not, the length of the whiskers is limited to 1.5 times the IQR. Image courtesy of the RSNA.
Unmet social needs tied to screening mammography use
By Amerigo Allegretto
Women's unmet social needs should be considered to better promote breast cancer screening utilization and early-stage cancer diagnosis.
February 14, 2024
Woman Anxious 400
Functional MRI shows promise for treating chronic severe tinnitus
By Kate Madden Yee
Real-time functional MRI neurofeedback therapy may be more effective for treating chronic severe tinnitus than cognitive behavioral therapy, researchers have found.
February 14, 2024
Tinnitus Ear Problems Illustration
Radiologists ‘compete’ on chest x-rays reads with and without AI
By Will Morton
In a study described as a “competition between radiologists,” participants tasked with identifying abnormal findings on chest x-rays performed better with AI assistance than without AI assistance – though not by much and not in all cases.
February 14, 2024
The AI system output the bounding boxes and labels of the lesions to assist radiologists. Image courtesy of the Journal of Imaging Informatics in Medicine.
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