Scott Williams

Infections-Inflammatory
Infect > General > Aspiration
April 2, 2002
PET
PET > PET tumor imaging > Colon Cancer
April 2, 2002
Pleura
Pleura > Askins > Images
April 2, 2002
Miscellaneous Pulmonary
Misc > Atelectasis
April 2, 2002
Infections-Inflammatory
Infect > Bacterial > Angiomatosis
April 2, 2002
Autoimmune
Autoimmune > IBEmphysema
April 2, 2002
Genitourinary
Genitourinary > Adrenal imaging
April 2, 2002
Pheo_CT.JPG (19041 bytes)
Infections-Inflammatory
Infect > Granuloma > TB
April 2, 2002
PET
PET > PET CNS imaging
April 2, 2002
Inhalation-Lungs
Inhale > EAA
April 2, 2002
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Top Stories
2025 10 02 Long Covid Apar Thumbnail
Molecular Imaging
PET reveals mechanism underlying brain fog in long COVID
Brain regions where C-11 K-2 radiotracer was increased were negatively correlated with long COVID patients’ performance on cognitive tests.
Brain Puzzle Dementia
MRI
MRI finds that brain shape changes may be associated with dementia
2025 10 02 Shahrvini Ai Vs Radiologist False Positives Thumbnail
Womens Imaging
False-positive DBT findings differ between AI, radiologists
Coffta Sandy Thumbnail
Practice Management
What is the real impact of the 2025 MPFS Proposed Rule on radiology practices?
Digital Innovations Shaping the Future of Radiology
Sponsor Content
Digital Innovations Shaping the Future of Radiology
More in Home
Nearly half of outpatient MRI orders are delayed
By Kate Madden Yee
Nearly half of outpatient MRI orders are delayed -- that is, performed more than 10 days from the date chosen by the referring provider, according to recent research.
January 12, 2024
Mri Brain
ChatGPT identifies incidental CT findings
By Amerigo Allegretto
ChatGPT-4 performs well in identifying incidental findings on CT via a process called single-shot learning.
January 11, 2024
Computer Brain Ai 400 (1)
Radiologists in Europe ramp up testing of AI
By Will Morton
Four out of seven commercially available AI algorithms for detecting lung nodules on x-rays performed better than human readers in a recent study.
January 11, 2024
Example chest x-rays from a public test set illustrate algorithm and reader similarities to and discrepancies from the reference standard. A specialized radiologist determined the reference standard score (0, no nodule present; 100, one or more nodules present), and algorithms and human readers provided a probability score between 0 and 100 for each patient of the likelihood that the patient was a nodule case. (A) Radiograph in a man (age, 72 years) with a nodule present (reference standard score, 100) shows a true-positive result based on the average algorithm scores. (B) Radiograph in a man (age, 68 years) without a nodule present (reference standard score, 0) shows a true-negative result based on the average algorithm scores. (C) Radiograph in a woman (age, 64 years) without a nodule present (reference standard score, 0) shows a false-positive result based on the average algorithm scores. (D) Radiograph in a man (age, 37 years) with a nodule present (reference standard score, 100) shows a false-negative result based on the average algorithm scores. Corresponding lateral images and CT scans (when available) for these patients are presented in Figure S2 (supplementary data). The images shown in this figure were part of a public subset and not part of the set on which metrics are reported, which remains confidential for reevaluation in the future. Algorithm scores provided for the images are raw, uncalibrated scores and cannot be directly compared to each other; they are provided for indicative purposes only. Image and caption courtesy of Radiology.
Cannabis and the brain: What's the long-term impact?
By Philip Ward
Researchers in New Zealand have used MRI to evaluate the effects of cannabis on the aging brain. We caught up with Rebecca Lee for an update.
January 11, 2024
Cannabis Marijuana
Point-of-care decision support reduces unnecessary CT, MRI imaging
By Kate Madden Yee
A point-of-care, web-based clinical decision support tool shows promise for reducing the incidence of inappropriate CT or MR imaging, patients' radiation exposure, and even carbon emissions caused by unnecessary exams.
January 11, 2024
Checklist
Ultrasonic flow ratio reliable for assessing coronary stenosis
By Amerigo Allegretto
Ultrasonic flow ratio is a reliable method for computing fractional flow reserve in assessing coronary stenosis.
January 11, 2024
Heart Attack Disease 3 D 400
PCCT overcomes image limitations for stenosis quantification on CCTA
By Kate Madden Yee
Photon-counting detector CT (PCCT) with virtual monoenergetic imaging reconstruction shows promise for quantifying stenosis with coronary CT angiography (CCTA).
January 10, 2024
82-year-old man with calcified stenosis in left main artery who underwent coronary CTA by PCCT. Curved multiplanar reformatted images at varying virtual monoenergetic imaging (VMI) levels (40-140 keV) show stenosis at each level. Percent diameter stenosis (PDS) decreased from 92.5% at 40 keV to 53.1% at 140 keV. Extent of calcium blooming artifacts decreased from 100% at 40 keV to 72.3% at 140 keV. Image and caption courtesy of the American Journal of Roentgenology.
PET scanner visualizes brain activity when people cough
By Will Morton
A recently developed PET camera appears to enable imaging during head motion and has revealed molecular brain patterns in patients when they cough.
January 10, 2024
Statistical parametric mapping (SPM) results. Brain regions with significant activation in voluntary cough (A), induced cough (B), and suppressed cough (C) compared with rest. Image courtesy of Scientific Reports.
MRI shows PTSD sufferers have smaller cerebellums
By Kate Madden Yee
MRI shows that people with post-traumatic stress disorder (PTSD) have a cerebellum about 2% smaller than adults without the condition.
January 10, 2024
Firefighter Explosion 400
Diagnostic errors tied to patient harm
By Amerigo Allegretto
Diagnostic errors, including those from radiology among hospitalized adults who died or were transferred to the ICU, are common.
January 10, 2024
Emergency 400
CBBCT shows superiority over mammography in small studies
By Amerigo Allegretto
Conebeam breast CT (CBBCT) has superior diagnostic performance than that of mammography in small studies.
January 10, 2024
Ct Scan Patient 400 (1)
FAPI-PET predicts treatment response in patients with rheumatoid arthritis
By Will Morton
FAPI radiotracer uptake on PET/CT imaging may be a biomarker for identifying early responders to rheumatoid arthritis (RA) treatment.
January 9, 2024
Representative Ga-68 FAPI-04 and F-18 FDG-PET/CT images of responders at three month follow-up. Patient #11 was a 50-year-old man with 28 affected joints detected in PET/CT. Joint activity decreased after treatment with Tripterygium wilfordii, methotrexate, adalimumab, and prednisone. In patient #8 (a 65-year-old woman), Ga-68 FAPI-04 PET/CT showed 12 affected joints. Joint activity decreased from baseline after three months of treatment with Tripterygium wilfordii and methotrexate.
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