Will Morton

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Molecular Imaging

Researchers offer hypothesis for long COVID brain fog

A group in France has offered an explanation for long COVID brain fog, with the concept based on a visual brain pattern they discovered on patient PET scans.

October 19, 2023

Hypometabolism detected with F-18 FDG-PET in long-COVID patients: putative astrocyte dysfunction and glutamatergic dysregulation. (A) PET scan of a healthy subject. (B) PET scan of a long COVID patient. Hypometabolic areas are indicated with arrows. (C) A diagram showing a healthy condition in which an astrocyte has a normal capacity to take up glutamate and recycle it to sustain glutamatergic neurotransmission, giving rise to normal glucose utilization and lactate production to ensure adequate neuronal energy supply. (D) A diagram showing a long COVID condition in which an astrocyte has reduced glutamate uptake capacity, leading to reduced glutamate recycling, lower glucose utilization (observed with F-18 FDG-PET as hypometabolism) and lower lactate production, dysregulating glutamatergic neurotransmission, and possibly endangering neuronal survival.

COVID-19 AI model boosts disease detection by radiologists

An AI algorithm designed to diagnose COVID-19 has been validated in a study by radiologists who interpreted x-rays with and without the model.

October 18, 2023

Results of Grad-CAM and Grad-CAM++ for the deep-learning model: (A) normal, (B) pneumonia, and (C) COVID-19. Left column, original chest x-ray image; middle column, result of Grad-CAM; right column, results of Grad-CAM++ .

Advanced Visualization

PET/CT radiomics may improve diagnosis of VCFs

A PET/CT-based radiomics approach could help clinicians distinguish between malignant and benign vertebral compression fractures (VCFs).

October 17, 2023

DEXA study sheds light on ‘obesity paradox’

Dual-energy x-ray absorptiometry (DEXA) scans have shown that even patients with normal BMI scores may experience significant drops in bone health.

October 17, 2023

Molecular Imaging

PET tracer targets KRAS mutations in cancer patients

A group in China has developed a PET radiotracer that visualizes tumors with KRAS mutations in patients with lung and colon cancer.

October 16, 2023

Representative F-18 PFPMD-PET/CT images of non-KRAS-G12C and KRAS-G12C tumors in patients with non-small cell lung cancer (NSCLC) and colorectal cancer (CRC). Image courtesy of the Journal of Nuclear Medicine.

Molecular Imaging

CMS lifts limit on amyloid PET coverage

CMS has lifted its coverage limit of one amyloid PET scan per lifetime for patients with Alzheimer’s disease.

October 13, 2023

Secondhand smoke raises osteoporosis risk in women

Passive and active smoking may be equivalent risk factors for osteoporosis in women, according to a study in Italy.

October 13, 2023

Nuclear Medicine

TRIGA reactor fuel supply restored in the U.S

Pennsylvania State University has received the first TRIGA nuclear research reactor fuel delivery in the U.S. in a decade.

October 12, 2023

Penn State received the TRIGA reactor fuel on September 27.

Researchers discuss concept of locally run LLMs

A team at NIH has shown it may be feasible to run large language models (LLMs) to generate x-ray reports on local systems without compromising patient privacy.

October 12, 2023

Molecular Imaging

AuntMinnie.com Molecular Imaging Insider

Amyloid PET scans used to diagnose Alzheimer’s disease also may be key for ruling out the disease in select patients. Learn more about this and other recent news in this edition of the Molecular Imaging Insider.

October 10, 2023

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Patient relaxing inside an MRI scanner with illuminated circular ring during medical imaging procedure

Kaiser score outperforms MRI BI-RADS for inconclusive breast findings

Kaiser scoring led to higher diagnostic accuracy on breast MRI.

Comparative PET/CT scan images showing [18F]FAPI and [18F]FDG imaging with MIP projections, fusion views, and CT cross-sections for medical diagnosis

FAPI-PET detects more HCC lesions than FDG-PET

LLMs mostly avoid unnecessary care in Choosing Wisely tests

Clinical research presentation slide showing FAP RLT experience data table with patient outcomes across multiple institutions and speaker photo

EANM: Thomas Hope on what’s next in FAP-targeted theranostics

3D medical illustration of human heart with coronary arteries glowing in orange and red against blue background

MRI shows no ties between COVID, future heart inflammation

3D MRI technique helps plan treatment for pediatric heart conditions

By Kate Madden Yee

The method makes "heart muscle and heart valves visible while making blood and surrounding tissues transparent," researchers noted.

February 12, 2026

Four medical imaging scans showing cross-sections of cardiac anatomy

Could AI scoring help with managing DCIS?

By Amerigo Allegretto

An AI model showed associations with recurrence after DCIS surgery and performed comparably to established clinical risk models.

February 11, 2026

Medical mammography scan with multiple breast imaging views and diagnostic color mapping

Clinicians, beware: CT diagnostic accuracy varies by adnexal lesion type

By Kate Madden Yee

The modality correctly diagnoses dermoids and simple cysts, but is not as effective at identifying other types of adnexal lesions.

February 11, 2026

Medical CT scan cross-section of human pelvis showing anatomical structures

Radiology coding update for 2026

By Erin Stephens

In a new column, Erin Stephens of Healthcare Administrative Partners reviews the 2026 CPT code changes.

February 11, 2026

Professional woman in white sleeveless top smiling in bright office setting

Super-resolution deep learning reconstruction improves CCTA

The commercially available image reconstruction algorithm outperformed standard hybrid iterative reconstruction for assessing coronary stenosis.

February 10, 2026

Medical imaging comparison of cardiac scans showing different image processing techniques

Nonsurgical management rising for low-risk DCIS cases

By Amerigo Allegretto

Trends show that nonsurgical management of DCIS is rising, paving the way for imaging's role in active surveillance.

February 10, 2026

Multiple blue mammogram scans overlapping in diagnostic medical imaging view

Gadoxetate MRI offers high sensitivity for liver cancer screening

By Kate Madden Yee

"Most participants undergoing HCC screening had excellent MRI quality even when ultrasound was limited," researchers noted.

February 10, 2026

Medical diagnostic imaging: Three grayscale MRI/CT scan slices of abdominal region

Podcast: MRI service engineer faced nightmare with man's entrapment

MRI service engineers aren't generally first responders, says MRI safety expert Josh Posh.

February 10, 2026

Confidential podcast cover for The Invisible Force MRI Incident Investigation

PET/CT visualizes complications in patients on hemodialysis

F-18 sodium fluoride PET/CT scans can quantify changes in cardiac and aortic vascular calcifications.

February 9, 2026

Medical imaging scan with color-coded anatomical visualization and yellow indicator arrows

DBT-guided biopsies show practical advantages

By Amerigo Allegretto

New research says DBT-guided biopsies lead to less procedure times and radiation exposure compared to mammography-guided biopsies.

February 9, 2026

Medical mammogram X-ray scan of breast tissue in black and white

Radiology is at an inflection point

By Dhruv Chopra

Radiology is a cornerstone of modern medical diagnostics, but today is at an inflection point, said Civie CEO Dhruv Chopra in a new column.

February 9, 2026

Professional businessman in gray suit and glasses, smiling at camera

PSMA-PET/CT best for staging prostate cancer

The finding is from a head-to-head comparison of PSMA-PET/CT with five other techniques.

February 6, 2026

Medical imaging panel showing ductal adenocarcinoma in multiple diagnostic views

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