Eric Barnes

CT
CT often unjustified in the young; German pediatricians lack dose awareness
VIENNA - About a third of the CT scans performed in patients younger than 35 could be replaced by other modalities, concludes a Norwegian study presented Tuesday at the European Congress of Radiology. Meanwhile, a survey in the region of Essen, Germany, found that many pediatricians lack basic knowledge of radiation exposures for various chest indications.
March 9, 2009
CT
NELSON lung cancer trial yields positive early results
VIENNA - A first peek at the first results of the first large randomized lung cancer screening trial to near completion found that CT detected four-fifths of participants' lung cancers at stage I -- in time to effect a curative resection.
March 8, 2009
CT
Diabetes renders coronary CTA more difficult, less successful
VIENNA - Diabetic patients have smaller vessels and larger coronary artery calcifications than nondiabetics, a combination that reduces the utility of coronary CT angiography (CTA), according to a new study from Italy.
March 7, 2009
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Nuclear Medicine
3D CT detection of perfusion defects mirrors SPECT
VIENNA - Three-dimensional images from normal coronary CT angiography scans are highly sensitive for detecting fixed perfusion defects compared to myocardial SPECT. A special reconstruction technique performed with customized software does the job without the need for additional radiation or contrast.
March 7, 2009
CT
Minimal prep VC nearly as sensitive, better tolerated
VIENNA - A new study from the U.S. and Japan found that full-laxative and minimum-laxative virtual colonoscopy had equivalent sensitivities for detecting colorectal polyps 6 mm and larger, though specificity fell in the minimum-prep regimen. The patients were happy to skip the laxatives, however.
March 6, 2009
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CT
320-slice coronary CTA permits much lower contrast dose
VIENNA - Single-beat scanning not only enables significant radiation dose reductions in coronary CT angiography (CTA), the short duration of the scan permits drastically lower contrast doses as well, at least in patients with regular heartbeats and no arrhythmias.
March 5, 2009
Digital X-Ray
Opacification at 320-row CT distinguishes normal, stenosed vessels
Researchers at Brigham and Women's Hospital in Boston have developed a new way to evaluate the coronary arteries, using a method based on the change in contrast opacification along the length of normal versus stenosed coronary arteries.
March 5, 2009
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Nuclear Medicine
NCRP report: CT drives massive increase in medical radiation dose
The U.S. population's exposure to ionizing radiation from medical procedures grew more than sevenfold between the early 1980s and 2006 -- an increase largely attributable to spectacular growth in CT use, according to a report released today by the National Council on Radiation Protection and Measurements (NCRP).
March 2, 2009
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Cardiac Imaging
AuntMinnie.com Cardiac Imaging Insider
March 1, 2009
Digital X-Ray
Prospective coronary CTA performs well in heavy patients
Prospectively gated coronary CT angiography (CTA) performed well when scanning patients who were heavy or had high calcium scores, according to a study that tracked predictors of success with the low-dose technique. On the other hand, image quality dropped significantly when heart rates or heart rate variability was high.
February 26, 2009
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Ultrasound
CEUS outshines color Doppler imaging for indeterminate kidney lesions
CEUS outperformed color Doppler ultrasound in a study focusing on indeterminate kidney lesions.
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Womens Imaging
Women's Imaging MinnieCast, Episode 2: Risk-based vs. annual mammography screening, part 1
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Digital X-Ray
Chest x-rays reveal atherosclerosis in patients undergoing amputations
Cardiac Mri Adobe Samunella
MRI
3D MRI technique helps plan treatment for pediatric heart conditions
Images of a 39-year-old who underwent screening mammography. Right craniocaudal (left) and mediolateral oblique (middle) views from preoperative mammography show suspicious grouped fine pleomorphic calcifications (arrows). After biopsy showed ductal carcinoma of situ (DCIS), patient underwent breast-conserving surgery, yielding final diagnosis of ductal carcinoma in situ (intermediate grade, hormone receptor positive). (Right) Screenshot of an output of a commercial AI tool applied to preoperative mammography. AI detected right breast lesion with score of 95% on both views (concentric colored circles). Present study’s reviewing radiologist deemed AI marking to correspond with site of DCIS.
Womens Imaging
Could AI scoring help with managing DCIS?
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Protocols, resources can reduce CT use in child appendectomy patients
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Developing protocols and having resources available are ways hospitals can limit radiation exposure from CT to pediatric appendectomy patients.
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Hysterectomies may be averted with UAE
By Will Morton
A minimally invasive treatment called uterine artery embolization (UAE) may be a promising alternative to hysterectomy in women due to severe bleeding after childbirth.
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Ultrasound model predicts liver disease progress
By Amerigo Allegretto
A predictive model combining multiple ultrasonic parameters can discriminate between different liver diseases.
March 20, 2024
Multiparametric ultrasound in a 52-year-old female patient with metabolic dysfunction-associated fatty liver disease (MAFLD) and hepatitis B, whose body mass index was 26.9. (A) Gray-scale image (left) shows the liver parenchyma, and attenuation image (right) shows the right liver lobe acquired from the right intercostal oblique plane, with the degree of attenuation color-coded in the sampling box. Orange indicates a high attenuation coefficient and blue indicates a low attenuation coefficient. The coefficient value (0.59 dB/cm/MHz) and reliability index (R2 = 0.95) are presented in the lower left corner. (B) 2D shear-wave elastography-generated quad-view mode image shows an elasticity map, propagation map, gray-scale image, and dispersion map at the same time. A 1-cm region of interest is placed within the sampling box of each image. Red and blue indicate high and low elasticity and dispersion slope, respectively. Liver stiffness on the elasticity map is 5.6 kPa, and the dispersion slope on the dispersion map is 13.23 (m/sec)/kHz. Image courtesy of the RSNA.
CTPA rates increase among pregnant women
By Kate Madden Yee
The use rate of CT pulmonary angiography (CTPA) for the diagnosis of pulmonary embolism has increased among pregnant women -- but outcomes from these studies are often negative, researchers have reported.
March 19, 2024
Pregnant Woman
AI model predicts 5-year breast cancer risk from mammogram data
By Amerigo Allegretto
A Duke University team has developed an AI model that they say can predict five-year breast cancer risk from mammograms.
March 19, 2024
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The PACSman Pontificates: Dog tired after HIMSS 2024
By Michael J. Cannavo
Michael J. Cannavo, aka the PACSman, reflects on the Healthcare Information and Management Systems Society (HIMSS) annual meeting in this edition of The PACSMan Pontificates.
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Michael J. Cannavo.
Training technique in AI helps preserve patient privacy
By Will Morton
The privacy of patient data in AI models trained on chest x-rays can be guaranteed – importantly, without significantly reducing the accuracy of models on large “real-world” data sets.
March 18, 2024
Ai Bias
Women with AI knowledge more willing to be in AI imaging studies
By Amerigo Allegretto
Women with at least some knowledge on AI’s use in breast imaging are more willing to participate in studies using the technology.
March 19, 2024
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Radiology retains popularity in 2024 Main Residency Match
By AuntMinnie.com staff writers
Although falling just short of the 100% rate achieved in the last two years, nearly all available resident positions for diagnostic and interventional radiology were filled on Match Day 2024.
March 18, 2024
Image
FAPI-PET/CT outperforms FDG-PET/CT in women with invasive breast cancer
By Will Morton
PET/CT imaging using gallium-68 FAPI radiotracer over F-18 FDG appears promising in women with invasive lobular carcinoma.
March 15, 2024
Maximum-intensity projection F-18 FDG-PET (left) and Ga-68 FAPI-PET (right) images of synchronous ILC. (A) A 42-year-old patient with multicentric primary lesions (encircled), regional (solid arrows), and distant inferior jugular lymph node (dashed arrows) seen on F-18 FDG-PET and subsequently confirmed on Ga-68 FAPI-PET, which also revealed additional malignant foci aligned with MRI. Some lesions exhibited high activity retention on Ga-68 FAPI-PET. (B) A 53-year-old patient showing no significant uptake on F-18 FDG-PET but synchronous bilateral lesions (arrows) on Ga-68 FAPI-PET, which also identified pathologic lymph nodes (encircled), resulting in upstaging. Image courtesy of the Journal of Nuclear Medicine.
Image perception: Are radiologists akin to MLB batters?
By Will Morton
A radiologist’s perception when viewing a complex MRI may be akin to a Major League Baseball (MLB) batter reading the stitches on a fastball, according to researchers exploring how diagnostic interpretations are made.
March 18, 2024
A continuum of errors related to image perception. Image courtesy of Jeremy Wolfe, MD.
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