Leah Sherwood

CT
Dual-energy CT scans of T-Rex reveal fossil's secrets
Using dual-energy CT (DECT), researchers have diagnosed bone disease in the fossilized jaw of a Tyrannosaurus rex named Tristan Otto, according to research presented this week at RSNA 2021. The work shows how DECT can be a noninvasive tool for paleontologists to investigate fossils.
November 30, 2021
2021 11 22 18 44 7879 2021 11 29 Trex Fig 1 B 400
CT
New model makes it easier for AI to spot pulp cavities
Combining conebeam CT (CBCT) and micro-CT images as training data can help artificial intelligence (AI) models identify the location of teeth and pulp cavities in CBCT images, according to a recent study published in the Journal of Endodontics.
September 26, 2021
2021 09 23 18 23 9271 Tooth Maxillary Premolar 400
Advanced Visualization
Clinicians in Japan use navigation system for TMJ surgery
Clinicians in Japan successfully performed a temporomandibular joint (TMJ) ankylosis surgery on a pediatric patient using a computer-assisted navigation system, according to details published on September 10 in the Journal of Medical Case Reports.
September 19, 2021
2021 09 15 22 48 7513 2021 09 15 Tmjanav Image 1 (2) 20210915221258
CT
CT helps identify CSF leak caused by COVID-19 nasal swab
CT scans helped identify a leak of cerebrospinal fluid (CSF) that occurred in a man who sustained an injury to the base of his skull following a COVID-19 test with a nasal swab, according to a September 9 case study in JAMA Otolaryngology -- Head & Neck Surgery.
September 8, 2021
2021 09 09 16 16 3605 2021 09 09 Nejm Knizek Swab Injury 400
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Top Stories
A graphical abstract of the study.
Molecular Imaging
FDG-PET/CT predicts outcomes in patients with HCC
Elevated FDG uptake was consistently associated with poorer overall survival.
Brain Abstract
MRI
Multimodal brain health composites outperform standard AD biomarkers
Breast Mammo 400 (1)
Womens Imaging
CEM shows strong performance in diagnosing DCIS
Minnie Cast Thumbnail 22 May
Podcast Network
Women's Imaging MinnieCast, Episode 9: Katja Pinker and breast MRI
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FDG-PET/CT predicts outcomes in patients with HCC
By Will Morton
Elevated FDG uptake was consistently associated with poorer overall survival.
May 22, 2026
A graphical abstract of the study.
Multimodal brain health composites outperform standard AD biomarkers
By Kate Madden Yee
"Reproducible, multimodal composites can capture distinct yet complementary dimensions of brain health," researchers noted.
May 22, 2026
Brain Abstract
CEM shows strong performance in diagnosing DCIS
By Amerigo Allegretto
CEM showed higher sensitivity than low-energy imaging in diagnosing DCIS by pathological nuclear grading.
May 22, 2026
Breast Mammo 400 (1)
Women's Imaging MinnieCast, Episode 9: Katja Pinker and breast MRI
By Amerigo Allegretto
Katja Pinker, MD, PhD, discusses the current state of breast MRI and her time at ISMRM 2026.
May 22, 2026
Minnie Cast Thumbnail 22 May
Radiomics model grades hand osteoarthritis on x-rays
By Will Morton
Hand osteoarthritis affects approximately 8% of men and 16% of women over the age of 50.
May 21, 2026
Overlap between manual (radiologist) and semiautomatic (algorithm) segmentations of hand joints on a standard posteroanterior radiograph. Orange overlay indicates manual radiologist segmentations, blue overlay shows algorithm segmentations, and green overlay indicates consistent regions between both methods.
Despite pediatric ED imaging capability, race and insurance gaps remain
By Kate Madden Yee
More work is needed to ensure pediatric imaging in the ED addresses both quality and equity of care, according to investigators.
May 21, 2026
Smiling Kids Thumb
MRI-specific AI algorithm reads cardiac scans with up to 99% accuracy
By Kate Madden Yee
The algorithm beat existing general-purpose AI models by up to 35%, researchers reported.
May 21, 2026
Cardiac Mri Adobe Samunella
Podcast: The PACSMan Pontificates, Episode 2 -- RFPs
By Michael J. Cannavo
Are RFPs still needed for buying a PACS? Michael J. Cannavo, aka the PACSMan, tackles this question in episode 2 of The PACSMan Pontificates podcast series.
May 20, 2026
Pacsman Pontification
TAE reduces pain in patients with chronic wrist pain
By Will Morton
The finding suggests that the emerging interventional radiology procedure could be a new option for patients who have exhausted conservative management.
May 20, 2026
A 44-year-old woman with TFCC injury treated by transcatheter arterial embolization (TAE). a) Right brachial arteriography via common femoral artery access with a 5-Fr catheter demonstrates hyperstaining on the ulnar side of the wrist joint (white circle). b) An ulnar artery branch is superselected with a 1.9-Fr microcatheter, showing hypervascular staining corresponding to the pain site (white arrow). c) Delayed-phase angiography reveals early venous drainage (white arrow) adjacent to the hyperstaining, a finding often observed in TAE and considered an additional marker for embolization. d) Final angiography after injection of 0.5 mL quick-soluble gelatin sponge particles (QS-GSPs) demonstrates resolution of the hyperstaining (white circle). The VAS pain score improved from 7 at baseline to 1 at six months.
Human-AI collaboration beats AI alone for identifying PE
By Kate Madden Yee
Study findings highlight the continued central role of radiologists for this indication.
May 20, 2026
Case example of a false-negative AI result. An 85-year-old female presented to the emergency department with dyspnea. Axial 0.625-mm from CT pulmonary angiography examination with contrast (CTPA) images demonstrate a thin, linear right-sided filling defect extending from the right interlobar pulmonary artery (A and B, red arrows) into the right middle lobar artery (B, yellow arrow), consistent with acute pulmonary embolism (PE). The finding was described in the radiology report; however, the AI result was negative for PE. Adjudication was consistent with acute PE.
AI model predicts 10-year breast cancer risk
By Amerigo Allegretto
A mammography-based AI model showed strong performance in predicting 10-year breast cancer risk over clinical and other AI models.
May 20, 2026
Breast Cancer3
AI devices vary widely in lung cancer detection
By Will Morton
Three devices helped detect more cancerous tumors, whereas the other four devices helped detect fewer tumors.
May 19, 2026
Cropped secondary capture examples. These are illustrative and not intended to imply superiority or inferiority of any device. (A) Posteroanterior radiograph in a 46-year-old female patient. The device correctly identified a right lower lobe nodule projected below the right hemidiaphragm and hilar lymphadenopathy. (B) Posteroanterior radiograph in an 86-year-old female patient with a classic Golden S sign highly suggestive of cancer. Three devices did not identify any findings. (C) The output from one device for the same radiograph as in B. The device placed a contour around the area of abnormality but mislabeled it as segmental collapse, and there are no other elements in the output to raise suspicion of cancer. (D) Posteroanterior radiograph in a 60-year-old male patient -- a case of confirmed lung cancer that was not deemed visible in retrospect. The device identified multiple false-positive abnormalities. (E) Posteroanterior radiograph in a 77-year-old female patient with two right lower lobe nodules. The device mislabeled the abnormality as infection -- a diagnostic term that could incorrectly influence clinical management. (F) Posteroanterior radiograph in a 77-year-old female patient with a right hilar tumor. Most of the lungs have been labeled by the device, with excessive overlap of the abnormality that pragmatically represents an incorrect result. All annotations shown were produced by the devices. LL = lung lesion, LO = lung opacity, PO = pleural other, TBC = tuberculosis.
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