Scott Williams

Musculoskeletal
Post-operative Bone Scanning:
April 2, 2002
Musculoskeletal
Metabolic Bone Disease:
April 2, 2002
Vascular Abnormalities
Vascular > Coarctation > Images > Case1
April 2, 2002
Coarc1
Congenital
Congenital > CF > Images > Cf1
April 2, 2002
Cfcxr
PET
PET > PET CNS imaging
April 2, 2002
Autoimmune
Autoimmune > Sarcoid
April 2, 2002
PET
PET > PET tumor imaging > General
April 2, 2002
Miscellaneous Pulmonary
Misc > Transplant > Images > Transplant1
April 2, 2002
Trans1
Tumor Imaging
Technetium-99m Sestamibi Tumor Imaging:
April 2, 2002
Mediastinal Masses
Mediastinum > Pheochromocytoma
April 2, 2002
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Top Stories
2025 10 02 Long Covid Apar Thumbnail
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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.
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MRI helps clinicians assess neural involvement in endometriosis
By Kate Madden Yee
MRI could help clinicians assess neural involvement in endometriosis and help prevent irreversible nerve damage and chronic sensorimotor neuropathy.
January 4, 2024
Spectrum of imaging features of nerves involved in endometriosis in three women. (A) Coronal T1W contrast-enhanced MR image in a 44-year-old woman shows a thickened left sciatic nerve with increased enhancement (solid arrows) and a fibrotic mass (*). The right-side sciatic nerve is normal in appearance (dashed arrows). (B-D) Axial T1W image (without contrast enhancement) with fat saturation (B) in a 43-year-old woman shows a cystic endometriotic lesion with signal hyperintensity (arrow in B). The adjacent left iliacus muscle is asymmetrically thickened due to involvement by endometriosis (* in B). Axial T2-weighted MR image (C) at the same level as B shows T2 shading in the cystic lesion (arrow in C) and a fibrotic mass replacing the iliacus muscle (* in C). Sagittal T2-weighted MR image (D) shows the sacral nerve roots (dashed arrows in D) encased by a fibrotic endometriotic mass (* in D). (E) Axial T2-weighted MR image in a 37-year-old woman shows atrophy of the left iliopsoas (solid oval) and sartorius muscles (dashed oval), both innervated by the femoral nerve. Images and caption courtesy of the RSNA.
CEFUS visualizes carotid plaque volume
By Amerigo Allegretto
3D contrast-enhanced fusion ultrasound (CEFUS) can analyze carotid plaque volume burden and could help monitor plaque development over time.
January 4, 2024
Segmentation of the carotid artery included the reconstruction of the carotid artery from 3D CEFUS/3D CTA to enable volume quantifications. (a) Only shown for 3D CEFUS, a 3D cylindrical model was initialized from manually set circle marks of the vessel wall border (media-adventitia interface) in the common carotid artery and internal carotid artery. From the circles, a mesh of the vessel border (yellow delineation) was formed. (b) The contour of the contrast-filled lumen was outlined (red delineation), creating a lumenography into the final reconstructed 3D carotid model. The same segmentation procedure was performed on the corresponding 3D CTA. The images are available to use under a Creative Commons license: CC BY 4.0 DEED, Attribution 4.0 International.
Customized support reduces CT, MRI order errors
By Kate Madden Yee
Up to 44% of diagnostic errors are due to laboratory tests and radiology exams that were inappropriately ordered, according to new research.
January 4, 2024
Error Message
Standardized reporting categorizes breast cancer detection methods
By Amerigo Allegretto
A standardized system can help radiologists accurately categorize the method of detection when performing image-guided breast biopsies.
January 4, 2024
Women Cancer Patient 400 (1)
Bone health a concern among lung transplant patients
By Will Morton
Implementing a clinical bone health protocol may reduce fractures in lung transplant recipients.
January 3, 2024
Dexa Hip
Enlarged perivascular spaces in infant brains linked to autism risk
By Kate Madden Yee
Infants with enlarged perivascular spaces have a more than two-fold greater chance of developing autism compared to infants with normal-sized perivascular spaces.
January 3, 2024
Extra-axial cerebrospinal fluid (EA-CSF) and perivascular space (PVS) segmentation on a 24-month scan of a child who was diagnosed with autism. Image courtesy of Dea Garic, PhD, and Mark Shen, PhD.
PET/CT predicts brain tumors in melanoma patients
By Will Morton
PET/CT scans have the potential to predict brain metastasis in melanoma patients.
January 3, 2024
A 49-year-old patient with primary clinical stage III melanoma underwent F-18 FDG-PET. The primary tumor Breslow thickness was 6.5 mm. On initial F-18 FDG-PET images, this patient had a high SUVmax (52), resulting in limited survival with the occurrence of brain metastasis in the first year of follow-up (horizontal arrow). Notably, during the course of the treatment, the patient underwent surgical removal of the primary tumor as well as lymph node dissection, followed by neoadjuvant radiotherapy and immunotherapy. Image courtesy of Cancers.
Elastography detects liver stiffness tied to heart failure
By Amerigo Allegretto
Sound touch elastography can noninvasively evaluate liver stiffness tied to chronic heart failure.
January 3, 2024
Liver Digital Tablet 400
What do radiologists say about what's next for ChatGPT in 2024?
By Liz Carey
As a new year begins, radiologists weigh in on what has impressed them most and what might be next for large language models such as ChatGPT.
January 2, 2024
Computer Puzzle 400
ChatGPT perpetuates racial and gender biases
By Will Morton
ChatGPT-4 consistently produces clinical vignettes that stereotype certain races, ethnicities, and genders.
January 2, 2024
Ai Bias
RadNet testing three retail in-store breast cancer screening operations
By Liz Carey
RadNet executives will spend the next 18 months learning what does and doesn't work for operating small in-store retail breast cancer screening clinics in three areas of the U.S.
January 2, 2024
A look at a high-definition 3D mammography system inside a MammogramNow clinic. The first to open in a Walmart Supercenter is located in Milford, DE. Photo courtesy of RadNet.
Racial, ethnic representation increases over time in NCDB
By Amerigo Allegretto
Representation of Hispanic and American Indian or Alaska Native individuals in the National Cancer Database (NCDB) has increased over time.
December 28, 2023
Hispanic Family 400
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