Eric Barnes

[email protected]

CT use cuts false positives for appendicitis

Replacing ultrasound with CT for diagnosing appendicitis can significantly reduce the incidence of false-positive findings, according to researchers from the David Geffen School of Medicine in Los Angeles. The group studied the use of preoperative imaging and clinical outcomes in 1,081 adults who underwent surgery for suspected appendicitis between 1996 and 2006.

March 18, 2008

Obese patients challenge efficacy of cardiac CTA

VIENNA - Coronary CT angiography (CTA) is proving useful for evaluating most patients with suspected coronary artery disease, particularly since the introduction of 64-slice scanners. But information about CTA's performance in certain subpopulations, such as obese patients, is lacking. Researchers from Belgium studied whether coronary CTA was useful in this patient population, and presented their findings at the 2008 European Congress of Radiology (ECR).

March 10, 2008

CT maintains edge over MRI in liver transplant planning

VIENNA - Researchers from Germany have found that CT still does a better job than MRI of defining critical vasculature for living donor liver transplant planning, thereby enhancing overall safety for the donors. They compared the results of preoperative CT and MR cholangiography in potential liver donors, and presented their findings Monday at the 2008 European Congress of Radiology (ECR).

March 9, 2008

CAD nabs the flat polyps VC readers may miss

VIENNA - In two studies presented Sunday at the 2008 European Congress of Radiology, investigators tested colon computer-aided detection (CAD) schemes for their ability to find flat lesions. In both, the sensitivity was reassuringly high, though questions remain about the effect of false-positive CAD detections on reader performance and variations in flat polyp morphology.

March 8, 2008

2008 03 09 10 07 02 706

Dose studies delve into coronary CTA

VIENNA - At the 2008 European Congress of Radiology (ECR) on Saturday, researchers presented a pair of studies that examined the radiation dose of coronary CT angiography (CTA). The first compared the dose of 64-slice CT to that of dual-source CT, and the other examined coronary CTA dose data from a multicenter trial.

March 7, 2008

Automated patient-based contrast application cuts CTA contrast volume, risk

VIENNA - A work-in-progress application that bases coronary CT angiography (CTA) contrast dose and timing on a patient's individual cardiac output significantly reduces contrast media use and, by extension, the risk of nephropathy, according to a study presented Friday at the 2008 European Congress of Radiology (ECR).

March 6, 2008

Learning curve: VC ramps up spring training

A streak of favorable research outcomes, in particular the preliminary National CT Colonography Trial results released in September, seems to be coinciding with expanded training options for virtual colonoscopy. AuntMinnie.com takes a look at a few of these courses for spring/summer 2008. Potential trainees are advised to sign up soon or miss out.

March 6, 2008

2008 03 04 09 32 22 706

Dual-source CT edges into cardiac SPECT turf

U.S. researchers will use this week's European Congress of Radiology in Vienna to present research that shows dual-source CT making inroads into cardiac functional imaging, an area currently dominated by SPECT. The study moves dual-source coronary CT angiography closer to the holy grail of cardiac imaging -- a test that performs both morphological and functional analysis in a single scan.

March 5, 2008

2008 03 05 16 59 53 706

AuntMinnie.com Virtual Colonoscopy Insider

March 3, 2008

Part II: Modalities, input, and image processing see stroke differently

Our two-part series on acute stroke imaging looks at current controversies in imaging and treating ischemic stroke patients. In the final installment, CT perfusion pioneer Dr. Max Wintermark examines differences in imaging representations of infarcted brain tissue -- and a plan for addressing the challenges.

March 2, 2008

2008 02 26 16 39 57 706

Page 164 of 258

New benchmark helps monitor cumulative CT radiation dose

The findings highlight the need for systematic dose tracking and rigorous justification of imaging.

2026 02 13 Port Fractures Thumbnail

Study questions routine use of radiotherapy after bone surgery

2026 02 12 Wfumb Sertic Ceus Kidney Lesions Thumbnail

CEUS outshines color Doppler imaging for indeterminate kidney lesions

Minnie Cast Thumbnail (1) 1

Women's Imaging MinnieCast, Episode 2: Risk-based vs. annual mammography screening, part 1

2026 02 12 Chest Ac2 Thumbnail

Chest x-rays reveal atherosclerosis in patients undergoing amputations

Health disparities persist despite decline in cancer mortality rates

By Amerigo Allegretto

While cancer mortality rates declined in the U.S. between 2000 and 2020, racial and ethnic disparities persisted for many cancers.

January 15, 2024

Patient African American Woman 400

Researchers talk practical retainment strategies with AuntMinnie.com

By Amerigo Allegretto

Perhaps one New Year's resolution for radiology departments is finding ways to better retain their staff. Researchers recently published an article addressing just that.

January 15, 2024

Screenshot (1061)

Reimbursement issues give impetus to AI adoption

By Sanjay M. Parekh, PhD

Adoption of AI solutions remains nascent and inconsistent. The market has yet to see widespread adoption of medical AI technologies, as Sanjay M. Parekh, PhD, explains.

January 15, 2024

Artificial Intelligence Ai Suit

Vacation days taken and working during vacation tied to burnout

By Amerigo Allegretto

The number of vacation days taken by physicians -- and working on patient-related tasks while on vacation -- are tied to physician burnout.

January 12, 2024

Doctor Sad Floor 400

High body fat raises fracture risk in women treated for breast cancer

Women with high body fat undergoing early breast cancer treatment may be at higher risk for vertebral fractures, despite the use of bone health drugs.

January 12, 2024

Nearly half of outpatient MRI orders are delayed

By Kate Madden Yee

Nearly half of outpatient MRI orders are delayed -- that is, performed more than 10 days from the date chosen by the referring provider, according to recent research.

January 12, 2024

ChatGPT identifies incidental CT findings

By Amerigo Allegretto

ChatGPT-4 performs well in identifying incidental findings on CT via a process called single-shot learning.

January 11, 2024

Computer Brain Ai 400 (1)

Radiologists in Europe ramp up testing of AI

Four out of seven commercially available AI algorithms for detecting lung nodules on x-rays performed better than human readers in a recent study.

January 11, 2024

Example chest x-rays from a public test set illustrate algorithm and reader similarities to and discrepancies from the reference standard. A specialized radiologist determined the reference standard score (0, no nodule present; 100, one or more nodules present), and algorithms and human readers provided a probability score between 0 and 100 for each patient of the likelihood that the patient was a nodule case. (A) Radiograph in a man (age, 72 years) with a nodule present (reference standard score, 100) shows a true-positive result based on the average algorithm scores. (B) Radiograph in a man (age, 68 years) without a nodule present (reference standard score, 0) shows a true-negative result based on the average algorithm scores. (C) Radiograph in a woman (age, 64 years) without a nodule present (reference standard score, 0) shows a false-positive result based on the average algorithm scores. (D) Radiograph in a man (age, 37 years) with a nodule present (reference standard score, 100) shows a false-negative result based on the average algorithm scores. Corresponding lateral images and CT scans (when available) for these patients are presented in Figure S2 (supplementary data). The images shown in this figure were part of a public subset and not part of the set on which metrics are reported, which remains confidential for reevaluation in the future. Algorithm scores provided for the images are raw, uncalibrated scores and cannot be directly compared to each other; they are provided for indicative purposes only. Image and caption courtesy of Radiology.

Cannabis and the brain: What's the long-term impact?

Researchers in New Zealand have used MRI to evaluate the effects of cannabis on the aging brain. We caught up with Rebecca Lee for an update.

January 11, 2024

Cannabis Marijuana

Point-of-care decision support reduces unnecessary CT, MRI imaging

By Kate Madden Yee

A point-of-care, web-based clinical decision support tool shows promise for reducing the incidence of inappropriate CT or MR imaging, patients' radiation exposure, and even carbon emissions caused by unnecessary exams.

January 11, 2024

Ultrasonic flow ratio reliable for assessing coronary stenosis

By Amerigo Allegretto

Ultrasonic flow ratio is a reliable method for computing fractional flow reserve in assessing coronary stenosis.

January 11, 2024

Heart Attack Disease 3 D 400

PCCT overcomes image limitations for stenosis quantification on CCTA

By Kate Madden Yee

Photon-counting detector CT (PCCT) with virtual monoenergetic imaging reconstruction shows promise for quantifying stenosis with coronary CT angiography (CCTA).

January 10, 2024

82-year-old man with calcified stenosis in left main artery who underwent coronary CTA by PCCT. Curved multiplanar reformatted images at varying virtual monoenergetic imaging (VMI) levels (40-140 keV) show stenosis at each level. Percent diameter stenosis (PDS) decreased from 92.5% at 40 keV to 53.1% at 140 keV. Extent of calcium blooming artifacts decreased from 100% at 40 keV to 72.3% at 140 keV. Image and caption courtesy of the American Journal of Roentgenology.

Page 164 of 202