Phil Galewitz

Regulatory
Trump administration hits brakes on law to curb unneeded Medicare CT scans, MRIs
The U.S. Congress passed a law in 2014 to reduce unnecessary MRI exams, CT scans, and other expensive diagnostic imaging tests, but the Trump administration delayed putting the law into effect until 2020 after physicians argued it would interfere with their practices. Critics worry the delay comes at a cost: Medicare paying for millions of unnecessary exams and patients subject to unnecessary radiation.
August 18, 2019
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Economics
Walmart charts new course by steering workers to high-quality imaging centers
Walmart, the nation's largest private employer, is worried that too many of its workers are having health conditions misdiagnosed, leading to unnecessary surgery and wasted health spending.
May 15, 2019
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Womens Imaging
AI model uses mammograms to predict cardiovascular risk
The researchers report that the algorithm is on par with traditional cardiovascular risk equations.
Radiation Therapy Suite
Womens Imaging
Radiation organizations issue guidance on postmastectomy radiation therapy
2025 09 16 Dti Alps Measurement Alzheimers Disease Fig2 Thumbnail
MRI
White-matter microstructure influences the brain’s glymphatic system
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MRI
Cardiac MRI measures aid in predicting future MACE after heart attack
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AI model uses mammograms to predict cardiovascular risk
By Amerigo Allegretto
The researchers report that the algorithm is on par with traditional cardiovascular risk equations.
September 17, 2025
Heart Artificial Intelligence Ai 400
Radiation organizations issue guidance on postmastectomy radiation therapy
By Maryam Payne
ASTRO, ASCO, and SSO have jointly issued updated guidelines on postmastectomy radiation therapy.
September 16, 2025
Radiation Therapy Suite
White-matter microstructure influences the brain’s glymphatic system
By Will Morton
The finding further supports the use of an emerging technique called diffusion-tensor imaging analysis along the perivascular space.
September 16, 2025
2025 09 16 Dti Alps Measurement Alzheimers Disease Fig2 Thumbnail
Cardiac MRI measures aid in predicting future MACE after heart attack
By Liz Carey
Left atrial minimum volume index can help predict future major adverse cardiovascular events (MACE) after acute myocardial infarction.
September 16, 2025
2025 09 16 Ami Mace Study Radiology Thumbnail
DBT plus synthesized mammo leads to less false-positive recalls
By Amerigo Allegretto
A subanalysis of the TOSYMA trial found that DBT plus synthesized mammography leads to lower false-positive recall rates compared to digital mammography.
September 16, 2025
Breast Tomosynthesis Digital Social
Disparities persist in UFE access, utilization
By Kate Madden Yee
Disparities persist across the U.S. in access to and use of uterine fibroid embolization (UFE) compared with surgical treatments.
September 16, 2025
Fibroid
DL algorithm estimates lung nodule cancer risk, reduces false positives
By Kate Madden Yee
The deep-learning (DL) tool reduced false-positive results by almost 40% and showed high cancer detection rates.
September 16, 2025
2025 09 16 Radiology Antonissen Fig4 Thumbnail
LLMs perform well on Japanese radiology board exam
By Will Morton
So far, LLMs have passed text-based radiology exams but their image interpretation capabilities have not been impressive.
September 15, 2025
Question 4 from the Japan Diagnostic Radiology Board Examination 2024, representing a clinical scenario of a man in his 30s presented with transient dysphasia. The question asks to identify the most probable diagnosis from the following options: (a) glioblastoma, (b) hemangioblastoma, (c) metastatic brain tumor, (d) oligodendroglioma, and (e) primary central nervous system lymphoma (PCNSL). The correct answer is (d) oligodendroglioma. The figure also includes a summary of responses from four large language models, along with their legitimacy scores rated by diagnostic radiologists.
CCTA reveals that CAD can occur in the absence of typical risk factors
By Kate Madden Yee
Patients without coronary artery disease (CAD) risk factors may exhibit a similar degree of coronary inflammation to those with them.
September 15, 2025
Heart Pulmonary Trunk
PET/MRI shows promise in rectal cancer
By Will Morton
F-18 FDG-PET/MRI provided superior detection of lymph nodes and tumor deposits over standard imaging.
September 15, 2025
Rectal Cancer
Neuroinflammation persists for 2 years in long COVID
By Will Morton
Increased inflammatory activity was found on TSPO-PET in some individuals with post-COVID syndrome.
September 12, 2025
2025 09 12 Long Covid Brain Images Thumbnail
6 key ways to evaluate the heart on chest CT imaging in the ED
By Kate Madden Yee
Researchers have published two checklists for noncardiac radiologists to use when evaluating chest CT exams taken in the ED.
September 12, 2025
2025 09 11 Radiology Cadour Figure10 Thumbnail
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