Eric Barnes

CT
CTA predicts mortality, shows variable risk per vessel
Two major cautionary notes attached to coronary CT angiography (CTA) are the scarcity of literature proving a benefit in patients at risk of coronary artery disease (CAD) and its high radiation dose. Researchers at UCLA-Harbor Medical Center in Torrance, CA, believe they've gone a long way toward conquering both limitations with a low-dose 64-slice CT exam protocol and participation in several new studies suggesting a high prognostic value for CTA studies.
December 6, 2007
CT
AuntMinnie.com CT Insider
December 4, 2007
Cardiac Imaging
AuntMinnie.com Cardiac Imaging Insider
December 2, 2007
Molecular Imaging
PET does not predict survival in advanced lung cancer
CHICAGO - Studies over the past several years have demonstrated FDG-PET's ability to predict survival in patients with early-stage lung cancer. But for those with advanced non-small cell lung cancer (NSCLC), PET has no prognostic value, according to a new 15-year study from Duke University Medical Center in Durham, NC.
November 28, 2007
CT
Low-dose coronary CTA diagnoses most patients
CHICAGO - Radiation dose is shaping the debate over coronary CT angiography (CTA) more than any other factor. Even if the test is useful for evaluating coronary artery disease, the question of clinical utility versus the 10-15 mSv radiation dose makes it harder to justify. In a presentation Wednesday at the RSNA 2007 meeting, researchers from France shared their experience in performing more than 1,000 cardiac exams using a step-and-shoot mode.
November 27, 2007
2007 11 28 14 31 07 706
CT
Unusual VC regimen a success in the elderly
CHICAGO - A virtual colonoscopy preparation consisting only of iodinated oral contrast got high marks for ease of use from the elderly, compared to cathartic bowel prep and failed optical colonoscopy that preceded the scans, in a new study from Italy. Significant findings at VC made the procedure worth the effort, researchers reported Tuesday at the RSNA 2007 meeting.
November 26, 2007
2007 11 27 19 48 35 706
CT
Low-dose CT yields equivalent value for PE in pregnancy
CHICAGO - The use of low-dose CT pulmonary angiography (CTPA) to rule out suspected pulmonary embolism -- the leading cause of death during pregnancy -- works just as well as a standard-dose protocol, researchers from Boston reported Monday at the 2007 RSNA meeting.
November 26, 2007
CT
Ungated calcium CT scans could permit dual-purpose screening
CHICAGO - Could a one-scan CT lung screening and cardiac risk assessment be feasible? Perhaps, say researchers from South Korea who performed low-dose thoracic multidetector-row CT (MDCT) in a group of smokers and ran calcium tests on the data. They shared their results in a presentation Sunday at the RSNA 2007 meeting.
November 24, 2007
Nuclear Medicine
New contrast agent could replace some nuclear stress testing with echo
Researchers in the U.K. believe that an investigative echocardiography contrast agent could soon be used to replace nuclear cardiography stress exams for the initial detection of coronary artery disease. Their preliminary results of two trials suggest that perfusion stress echocardiography is as accurate as nuclear stress testing for detecting coronary artery disease.
November 21, 2007
CT
VC CAD beats human readers in multicenter trial data
Numerous computer-aided detection (CAD) studies have compared the colorectal polyp detection performance of human readers with and without the aid of CAD. But you'd be hard-pressed to find a standalone CAD study of virtual colonoscopy. Researchers from Massachusetts, however, recently compared the sensitivity of CAD with prospective VC readings from two large multicenter VC trials.
November 18, 2007
2007 11 16 16 32 32 706
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New benchmark helps monitor cumulative CT radiation dose
The findings highlight the need for systematic dose tracking and rigorous justification of imaging.
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PET/CT scans ‘crucial’ in patients with NK/T-cell lymphoma
By Will Morton
PET/CT has significant advantages over conventional methods for lesion detection and staging in patients with natural killer/T-cell lymphoma.
December 22, 2023
A 50-year-old man with recently diagnosed nasal-type NK/T-cell lymphoma underwent an F-18 FDG-PET/CT scan (A–D) for initial staging. Maximum-intensity-projection image (A) shows hypermetabolic lesions in both ethmoid sinus (thin arrow), both cervical lymphatic chains (arrowhead), left upper lung (thick arrow), liver, and spleen. Transaxial images show an F-18 FDG-avid mass in both ethmoid sinus (B). The scan shows intense F-18 FDG radiotracer uptake in left upper lung and uptake in the liver and spleen (CT showed no lesions), suggesting malignancy (C–D). Finally, after the PET/CT scan was done, the patient’s staging was changed from II to IV.
Podcast: Why medical students should choose radiology
By Liz Carey
Saurabh (Harry) Jha, MD, and Mitch Schnall, MD, PhD, of the University of Pennsylvania lead this inaugural episode of "Keeping Up With the Radiologists," brought to you by AuntMinnie.com.
December 20, 2023
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DBT surveillance screening after breast cancer treatment effective
By Amerigo Allegretto
Surveillance screening via digital breast tomosynthesis (DBT) immediately after breast cancer treatment is effective.
December 21, 2023
(A) Mammographic magnification view shows grouped calcifications in the left breast (circle). Stereotactic biopsy yielded grade 2 DCIS. Patient underwent a lumpectomy with tumor-negative surgical margins and radiation therapy. (B) Mammographic magnification view obtained four years after diagnosis shows new calcifications at the surgical site (circle). Stereotactic biopsy was performed, which revealed recurrent grade 2 DCIS. The patient then underwent a mastectomy. Image courtesy of the ARRS.
ACR submits comments on IDR fee ruling
By Amerigo Allegretto
The ACR is doubling down on concerns regarding the independent dispute resolution (IDR) fees and processes as part of the No Surprises Act.
December 21, 2023
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Brain imaging, ChatGPT, and medicolegal topped 2023's most read list
By Liz Carey
While ChatGPT landed two spots in the top 10, what grabbed the attention of the radiology community most varied along five other themes.
December 21, 2023
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MRI shows influence of hypertension on cerebral small vessel disease
By Kate Madden Yee
Researchers have used MRI to illuminate the effects of hypertension on cerebral small vessel disease-related brain structures, finding that these effects differ by patient sex and age at diagnosis.
December 21, 2023
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FES-PET better than FDG-PET in breast cancer patients
By Will Morton
In a head-to-head comparison, F-18 fluoroestradiol (FES)-PET/CT was better than standard FDG-PET/CT for the initial staging of estrogen receptor-positive breast cancer patients.
December 21, 2023
Axial PET (a) and axial fusion (b) images of F-18 FES (top) and F-18 FDG (bottom) with concordant uptake of both radiotracers in a left breast mass and left axillary node metastasis in correlation with CT imaging (c). Image courtesy of the European Journal of Hybrid Imaging.
ACR issues response to federal ruling on IDR fees
By Amerigo Allegretto
The American College of Radiology (ACR) remains concerned about a federal ruling that would increase the cost of independent dispute resolution (IDR) fees as part of the No Surprises Act.
December 20, 2023
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3D elastography performs well in automated breast volume scanning
By Amerigo Allegretto
3D elastography can be applied to an automated breast volume scanner to analyze in vivo strain images.
December 19, 2023
B-mode (a–c) and strain ratio (d–f) images of a carcinoma of unknown type in the coronal (a, d), sagittal (b, e) and transverse (c, f) planes. In the strain images (d–f), the maximal principal strain ratios are superimposed on the B-mode images of the top row. The purple arrows indicate the lesion. Image courtesy of Ultrasound in Medicine & Biology. Image available for fair use under creative commons license.
What motivates imaging data sharing for AI development?
By Amerigo Allegretto
Data privacy concerns steer organizational leaders from sharing public health data such as imaging for AI development.
December 20, 2023
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MRI comparable to Ga-68 PSMA PET/CT for prostate cancer diagnosis
By Kate Madden Yee
MRI performs comparably to gallium-68 (Ga-68) PSMA PET/CT for prostate cancer diagnosis and treatment tracking, according to research delivered at the recent RSNA meeting.
December 20, 2023
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LI-RADS shows low NPV in per-patient liver tumor assessment
By Amerigo Allegretto
Per-patient grouping for liver tumor status based on LI-RADS and treatment response shows low NPV in detecting residual or untreated tumors.
December 20, 2023
Images in a 55-year-old patient show hepatitis C-related cirrhosis and a transjugular intrahepatic portosystemic shunt (dashed arrow), with an undiagnosed tumor (dashed circle) at pretransplant imaging by both readers. Left: Noncontrast-enhanced axial CT image with a treated observation (dashed circles on the left, middle, and right images) and dense lipiodol staining (arrows) in the anterior right liver. Middle: Late arterial phase CT image with no appreciable enhancement. Right: Delayed phase image with no appreciable washout. The lesion was deemed at explant pathology to have 20% necrosis. Image courtesy of RSNA.
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