Eric Barnes

CT
AuntMinnie.com Virtual Colonoscopy Insider
July 28, 2008
CT
FOBT-screened cohort yields too many positives for VC
Virtual colonoscopy (VC) seems a promising way to sort through patients with a positive fecal occult blood test (FOBT), considering the latter's demonstrated low sensitivity and high false-positive rate. But in a screening cohort from the Netherlands, polyps and cancer were so common in FOBT patients that VC hardly seemed worth it.
July 27, 2008
CT
Coronary calcium increases mortality risk in elderly
The presence of coronary artery calcium substantially increases the risk of death among the elderly, a risk that increases with rising calcium burden, according to the first large study aimed at assessing the risk of elderly patients with coronary artery disease.
July 22, 2008
CT
Modest mortality gains in CT lung screening model
CT screening for lung cancer may provide a moderate reduction in lung cancer mortality among smokers, according to a study in the July issue of Radiology. The reduction in deaths from all causes due to screening was modest, however, due to competing causes of death among smokers of increasing age.
July 21, 2008
CT
Higher VC laxative dose burdens patients, doesn't improve reads
Researchers from the Netherlands report that higher levels of catharsis conferred neither better image quality nor improvement of tagging characteristics on image data, compared to images from subjects given lower laxative doses.
July 15, 2008
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Image Processing
New algorithm sharpens coronary artery images
Researchers at the recent Computer Assisted Radiology and Surgery (CARS) meeting in Barcelona, Spain, presented new work that aims to simplify the difficult task of evaluating coronary artery images.
July 13, 2008
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Cardiac Imaging
AuntMinnie.com Cardiac Imaging Insider
July 8, 2008
Digital X-Ray
AHA urges cautious use of coronary CTA and MRA
A new American Heart Association (AHA) committee statement on the use of coronary CT angiography and MR angiography recommends against screening asymptomatic individuals for coronary artery disease.
July 8, 2008
CT
Fourth-generation MDCT scanners do cardiac differently
Once upon a time, CT scanners were all pretty similar under the hood, and performance in a given application was predictable across brands. Today's state-of-the-art MDCT scanners take widely divergent approaches to difficult imaging targets and produce different results depending on the application.
July 7, 2008
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AI
All-purpose CAD tool stretches imaging boundaries
The NavI-CAD system discussed by Kensaku Mori, Ph.D., at the 2008 Computer Assisted Radiology and Surgery (CARS) meeting in Barcelona, Spain, is still a work in progress. But a decade of research on the landmark project has yielded a useful set of advanced imaging tools.
July 6, 2008
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Features found on MRI may predict liver cancer recurrence after surgery
By Kate Madden Yee
An algorithm based on MRI features could help clinicians predict liver cancer recurrence after patients have undergone liver resection, researchers have found.
November 8, 2023
Preoperative axial extracellular contrast agent-enhanced (A-E) MRI and (F-H) follow-up CT images in a 71-year-old male patient with chronic hepatitis B and a serum neutrophil count of 4.2 × 109/L. A 5.6-cm mass with a 1.9-cm satellite nodule was detected in segments V and VIII. (A) The mass (asterisks, A-E) shows mild-to-moderate hyperintensity on T2-weighted images, (B) hypointensity on T1-weighted noncontrast-enhanced images, (C) less than 50% hyperenhancement on late arterial phase images, (D) nonperipheral washout and incomplete enhancing capsule on portal venous phase images, and (E) marked diffusion restriction on diffusion-weighted images (b = 800 sec/mm2). The mass was confirmed at histopathologic analysis as moderately differentiated hepatocellular carcinoma with microvascular invasion. With an advanced-stage recurrence after resection score of 19.8 points (4.2 + 5.6 + 10), this patient was assigned to the high-risk group (≥15 points) for advanced-stage recurrence. At follow-up, (F) noncontrast-enhanced, (G) arterial phase, and (H) portal venous phase CT images acquired at day 70 after surgery show multifocal intrahepatic recurrence and tumor thrombus in the left portal vein (black arrow, H). Images and caption courtesy of the RSNA.
Mammography-based nomogram predicts breast microcalcifications
By Amerigo Allegretto
A mammography-based radiomic nomogram could be useful in predicting risk of malignancy in suspicious breast microcalcifications.
November 8, 2023
Breast Mammo Computer 400 (2)
Playkits develop role in easing kids' anxiety over MRI scans
By Edna Astbury-Ward, PhD
Giving young children a playkit that uses both virtual and augmented reality appears to reduce anxiety about this procedure, U.K. researchers report.
November 8, 2023
A smartphone is a key component of the playkit devised by the Sheffield team. Photo courtesy of DYR in collaboration with Dubit UK.
PET predicts chemotherapy responses in breast cancer patients
By Will Morton
PET/CT with gallium-68 FAPI radiotracer can predict responses to neoadjuvant chemotherapy in breast cancer patients.
November 8, 2023
Representative Ga-68 FAPI-PET/CT images of 48-year-old woman who had left invasive ductal carcinoma and who achieved pathologic complete response (pCR). (A) Baseline maximum-intensity projection (MIP) image demonstrated primary lesion (red arrowhead; SUVmax, 26.72) and Ga-68 FAPI-avid lymph node in left axilla (red arrows). (B) MIP image after two cycles of neoadjuvant chemotherapy (NAC) showed that primary lesion (red arrowhead; SUVmax, 8.87) and axillary lymph nodes (red arrow) were reduced in size and radioactivity uptake. (C and D) Representative images of lab tissue staining for FAP before NAC showed strong FAP-positive staining in stromal cells (C), which was significantly decreased on tumor bed after six cycles of NAC (D). Image courtesy of the Journal of Nuclear Medicine.
20-year study shows that lung cancer screening boosts survival rates
By Kate Madden Yee
Diagnosing early-stage lung cancer with low-dose CT translates to a 20-year survival rate of 81%, according to a large-scale study.
November 7, 2023
(A, B) Two annual repeat low-dose CT scans in a woman who was 60 years old at baseline enrollment in 1999. At baseline enrollment, she was currently smoking and had a 30-pack-year smoking history. No nodules were identified on baseline low-dose CT scans. On the sixth annual low-dose CT scan (B), a right lower lobe solid nodule (arrow) measuring 4.5 mm in maximum diameter was identified. The nodule could be identified in retrospect on the prior annual CT scan (arrow in A), when it measured 2 mm in maximum diameter. Estimated tumor volume doubling time was 161 days. Lobectomy was performed two months later, and diagnosis of stage 1aN0M0 moderately differentiated adenocarcinoma measuring 6 mm in maximum diameter was made. Expert pathologic panel review (22) of the pathologic specimen updated the diagnosis to adenocarcinoma with mixed subtype (80% acinar, 20% bronchoalveolar carcinoma components) with 5 mm of invasion. Images and caption courtesy of the RSNA.
Formal training leads to improved POCUS use for surgeons
By Amerigo Allegretto
A formal point-of-care ultrasound (POCUS) curriculum can improve the use of the technology by surgeons.
November 7, 2023
Surgeons Smiling 400
Imaging and 3D printing enhance teaching of anatomy
By Will Morton
The use of cross-sectional imaging and 3D printing may enhance teaching of spinal anatomy in undergraduate medical education.
November 7, 2023
3dspine
Julianna Czum talks AI chest radiograph study with AuntMinnie.com
By Amerigo Allegretto
Julianna Czum, MD, spoke with AuntMinnie.com on a study that tested a deep-learning algorithm on triaging chest radiographs.
November 6, 2023
Julianna Czum Interview
'Moral injury' common among interventional radiologists
By Kate Madden Yee
Moral injury is common among interventional radiologists, according to a study published November 3 in Academic Radiology.
November 6, 2023
Doctor Nurse Stressed Mask 400
PET shows ApoE4 carriers may benefit from earlier AD treatment
By Will Morton
PET imaging has revealed brain pathology linked to faster clinical progression of Alzheimer’s disease (AD) in patients with ApoE4 gene variants.
November 6, 2023
Tau
Can IMGs help mitigate radiologist shortages?
By Will Morton
International medical graduates (IMGs) appear to face difficulties getting visas for employment in U.S. academic radiology departments.
November 6, 2023
Students
MRI radiomics show promise for identifying Ki-67 breast cancer
By Kate Madden Yee
MRI radiomics show a high diagnostic accuracy for predicting Ki-67 expression in breast cancer, researchers have found.
November 6, 2023
Breast Cancer 400
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