Dr. Alexander Sardiña

Breast
Bringing humans and AI together to improve mammography outcomes
Could artificial intelligence (AI) yield more accurate breast cancer screening while also decreasing the workload of radiologists? Dr. Alexander Sardiña of AI software developer Whiterabbit makes the case that combining artificial and human intelligence will deliver the best results.
August 18, 2022
2021 03 25 00 42 3403 Mammography Breast Ipad Patient 400
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Top Stories
Kidney
MRI
Ultrasound-guided fluoro for kidney stones cuts radiation to kids
Fluoroscopy-assisted ultrasound guidance for mini-percutaneous nephrolithotomy procedures in children is safer and more effective than fluoroscopy alone.
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Molecular Imaging
New analysis supports use of FES-PET in breast cancer patients
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MRI
Are athletes returning to play too soon after concussion?
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CT
Ultralow-dose CT identifies pneumonia in immunocompromised patients
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Ultrasound-guided fluoro for kidney stones cuts radiation to kids
By Kate Madden Yee
Fluoroscopy-assisted ultrasound guidance for mini-percutaneous nephrolithotomy procedures in children is safer and more effective than fluoroscopy alone.
March 13, 2025
Kidney
New analysis supports use of FES-PET in breast cancer patients
By Will Morton
F-18 fluoroestradiol (FES)-PET scans can predict whether endocrine therapy could be effective in women with estrogen receptor-positive breast cancer.
March 13, 2025
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Are athletes returning to play too soon after concussion?
By Kate Madden Yee
Sports-related postconcussion changes in cerebral blood flow and white matter persist in athletes up to one year after injury.
March 13, 2025
Soccer Ball Woman Heading
Ultralow-dose CT identifies pneumonia in immunocompromised patients
By Kate Madden Yee
Ultralow-dose CT images "denoised" by an AI algorithm can effectively diagnose pneumonia in patients with weakened immune systems.
March 13, 2025
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Pediatric radiology continues to face workforce shortage
By Will Morton
The pediatric radiology subspecialty continues to experience a major workforce shortage, researchers have reported.
March 12, 2025
Kids
CTC for colorectal cancer screening is at an 'inflection point'
By Kate Madden Yee
The use of CT colonography (CTC) for colorectal cancer screening is at an "inflection point" after its Medicare reimbursement approval in 2024
March 12, 2025
Colon
Radiology practices hurt by paltry practice expense payments
By Liz Carey
Practice expenses account for close to 70% of total RVUs in radiology, compared with 45% across the MPFS, according to the authors.
March 12, 2025
Envelope Cash
Surveillance may be used for DBT-detected architectural distortions
By Amerigo Allegretto
Imaging surveillance may be a safe alternative to surgery for architectural distortions detected on digital breast tomosynthesis (DBT) alone.
March 12, 2025
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What’s your brain like on a vanilla milkshake?
By Will Morton
A controlled “feeding” PET study by researchers at the National Institutes of Health (NIH) has called into question the theory that ultraprocessed foods elicit brain responses akin to addictive drugs.
March 12, 2025
Brain2
DL algorithm targeting prostate cancer demonstrates clinical impact
By Liz Carey
Per participant, a deep-learning (DL) algorithm demonstrated increased specificity of 64.8% compared with radiologists at 21.3%.
March 12, 2025
MRI scans show two areas of clinically significant prostate cancer in a 65-year-old man with a prostate-specific antigen level of 8.23 ng/mL. Images are (A, E) axial T2-weighted images, (B, F) axial diffusion-weighted images obtained with a b value of 1500 sec/mm2, (C, G) axial apparent diffusion coefficient images, and (D, H) lesion masks generated by the deep learning algorithm (DLA) on T2-weighted images. The DLA detected a lesion in the right posteromedial peripheral zone of the apex (D), which was assigned as Prostate Imaging Reporting and Data System (PI-RADS) 4. A radiologist also detected the lesion and assigned it PI-RADS 4 (arrow in A-C). A lesion in the right anterior transition zone (H) was detected by the DLA, which was assigned PI-RADS 4. The radiologist did not detect the lesion (arrow in E-G). Both lesions were confirmed as prostate cancer with Gleason grade group 2. Caption and image courtesy of RSNA.
What has radiology learned in 5 years since COVID hit U.S.?
By Amerigo Allegretto
Experts discuss what the field of radiology has learned in the five years since the COVID-19 pandemic was declared in the U.S.
March 11, 2025
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Generative AI model validated in chest x-ray study
By Will Morton
A group in South Korea has validated a generative AI model that could reduce reading times and increase chest x-ray reporting accuracy.
March 11, 2025
An example that features an AI-generated report that identified “scattered pulmonary granulomatous calcifications.” In the first session, three of five readers specifically reported the presence of a nodule. Following the introduction of the AI-generated report, only one reader maintained the specific mention of a nodule, whereas the other four readers adapted their reports to include the AI-suggested terminology of “granulomatous calcifications.” AP = anterior-posterior. Image and caption courtesy of RSNA.
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