Dr. Jason Wiesner

Practice Management
Remote reading prepares group for COVID-19 response
When a radiology group in Northern California "took back the night" by insourcing its overnight teleradiology image interpretation several years ago, it had no idea it was also preparing itself for a more effective response to the COVID-19 pandemic. Dr. Jason Wiesner of Sutter Health explains.
May 31, 2020
2019 11 07 19 53 4087 Doctor Monitor Triple 400
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Emphysema progression with hole changes, with holes colored according to their diameter in 2-mm increments. (A) Baseline inspiratory nonenhanced axial CT scans in a 48-year-old man with chronic obstructive pulmonary disease show emphysema holes with hyperexpansion of secondary pulmonary lobules (white arrows) and thin alveolar walls visible in the right upper lobe. This emphysematous lesion is filled with holes of varying sizes. A single large air cyst was observed in the left upper lobe (black arrows), classified as a single emphysema hole of 20 mm or greater (bright green). (B) At six-year follow-up inspiratory nonenhanced axial CT, the holes in the right upper lobe have merged (white arrows), with no visible alveolar septa remaining, resulting in the formation of a large new hole of 20 mm or greater (bright green). Meanwhile, the hole in the left upper lobe also enlarged, merging with adjacent holes (black arrows). The size of other holes in the paramedian left upper lobe decreased.
CT
CT reveals changes in lung holes in emphysema patients
CT imaging of lung holes could offer a new way to visualize and quantify the natural course of emphysema.
Mri Breast Cancer
MRI
MRI-based radiomics help predict breast cancer chemotherapy response
Cms Building Social
Practice Management
CMS' proposed 2026 MPFS rule would impact imaging
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MRI
Explainable AI model finds breast tumors on MRI
Chest X Ray Adobe Stock 567204893
Digital X-Ray
Opportunistic use of chest x-rays can help screen for osteoporosis
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CT reveals changes in lung holes in emphysema patients
By Will Morton
CT imaging of lung holes could offer a new way to visualize and quantify the natural course of emphysema.
July 15, 2025
Emphysema progression with hole changes, with holes colored according to their diameter in 2-mm increments. (A) Baseline inspiratory nonenhanced axial CT scans in a 48-year-old man with chronic obstructive pulmonary disease show emphysema holes with hyperexpansion of secondary pulmonary lobules (white arrows) and thin alveolar walls visible in the right upper lobe. This emphysematous lesion is filled with holes of varying sizes. A single large air cyst was observed in the left upper lobe (black arrows), classified as a single emphysema hole of 20 mm or greater (bright green). (B) At six-year follow-up inspiratory nonenhanced axial CT, the holes in the right upper lobe have merged (white arrows), with no visible alveolar septa remaining, resulting in the formation of a large new hole of 20 mm or greater (bright green). Meanwhile, the hole in the left upper lobe also enlarged, merging with adjacent holes (black arrows). The size of other holes in the paramedian left upper lobe decreased.
MRI-based radiomics help predict breast cancer chemotherapy response
By Kate Madden Yee
The model could help clinicians determine the best care for women with the disease.
July 15, 2025
Mri Breast Cancer
CMS' proposed 2026 MPFS rule would impact imaging
By Amerigo Allegretto
CMS has proposed its MPFS rule for 2026, and if finalized, it would affect imaging services in radiology, nuclear medicine, and radiation oncology.
July 15, 2025
Cms Building Social
Explainable AI model finds breast tumors on MRI
By Amerigo Allegretto
An AI model can accurately find breast tumors on MRI and outperform conventional models in low- and high-cancer prevalence scenarios.
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2025 07 15 Explainable Ai Model Mri
Opportunistic use of chest x-rays can help screen for osteoporosis
By Will Morton
Chest x-rays obtained for other indications could be used to identify patients with signs of bone demineralization.
July 14, 2025
Chest X Ray Adobe Stock 567204893
Radiology drives July FDA AI-enabled medical device update
By Liz Carey
The U.S. FDA has just publicly listed 211 AI-enabled medical devices that have received regulatory clearances
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Rural women more prone to advanced-stage breast cancer
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Women living in rural areas are more likely to be diagnosed with advanced-stage breast cancer, but regular mammography helps decrease mortality rates.
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Peripheral vision training improves lesion detection
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Enhancing students' peripheral visual perception improved their lesion detection skills.
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Does adding plaque burden grade improve CAD-RADS scoring on CTA?
By Kate Madden Yee
Perhaps not, researchers have reported.
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More ultrasound cuts risks in pregnancies with less fetal movement
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Additional Doppler ultrasound in pregnant women who feel less fetal movement leads to fewer complications compared to usual care.
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AI echo model detects cardiac amyloidosis
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Researchers are highlighting the performance of their AI screening model based on echocardiography to detect cardiac amyloidosis.
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DVA reduces radiation exposure during interventions
By Will Morton
Digital variance angiography (DVA) shows promise in reducing radiation doses to patients during certain interventional radiology procedures.
July 10, 2025
Pelvic (A), femoral and popliteal (B), and cruro-pedal (C) region. The summated digital variance angiography (DVA) image significantly enhances image quality compared to the digital subtraction angiography (DSA) series I–IV (depicting 4 out of 28 (A), 48 (B) and 28 (C) DSA images) of the low dose (LD) acquisitions. Enhancements of iodinated contrast medium (ICM) by DVA depict small vessel structures in detail while the conventional DSA offers a reduced contrast-to-noise ratio (CNR) using LD acquisitions for standalone diagnostic interpretations.
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