Mark F. Weiss

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Molecular Imaging
What brain mechanisms drive depression in older adults?
A Belgian PET study has shown that mechanisms other than amyloid brain deposits may underlie depressive symptoms in people later in life.
Images in a 74-year-old male patient who presented at the hospital with acute symptoms of a right hemispheric ischemic stroke and a National Institutes of Health Stroke Scale (NIHSS) score of 24. (A) Nonenhanced CT image shows no signs of early infarction, whereas (B) CT perfusion image shows a large perfusion deficit in the territory of the middle cerebral artery and anterior cerebral artery caused by an extracranial occlusion in the right internal carotid artery. (C) Digital subtraction angiography shows the occlusion in the C1 segment. The extracranial occlusion was passed, reperfused, and subsequently stented (D, E). The final contrast injection did not reveal any intracranial occlusions within the territory of the internal carotid artery (F). At the 24-hour follow-up, there was no infarction on (G) the nonenhanced CT image, and the NIHSS score had decreased to 3 points. Image courtesy of RSNA.
Interventional
German team supports use of endovascular thrombectomy
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Digital X-Ray
DEXA receives major boost for osteoporosis screening
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MRI
ML model using CCTA, MRI data predicts MACE in cardiac patients
Justice Scales Fire
Clinical News
Patient death prompts RCR to act on gastric bands
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What brain mechanisms drive depression in older adults?
By Will Morton
A Belgian PET study has shown that mechanisms other than amyloid brain deposits may underlie depressive symptoms in people later in life.
January 24, 2025
Brain Puzzle Stars Social
German team supports use of endovascular thrombectomy
By Will Morton
Researchers from Hamburg say endovascular thrombectomy is a safe and effective option in cases of acute extracranial internal carotid artery occlusions.
January 23, 2025
Images in a 74-year-old male patient who presented at the hospital with acute symptoms of a right hemispheric ischemic stroke and a National Institutes of Health Stroke Scale (NIHSS) score of 24. (A) Nonenhanced CT image shows no signs of early infarction, whereas (B) CT perfusion image shows a large perfusion deficit in the territory of the middle cerebral artery and anterior cerebral artery caused by an extracranial occlusion in the right internal carotid artery. (C) Digital subtraction angiography shows the occlusion in the C1 segment. The extracranial occlusion was passed, reperfused, and subsequently stented (D, E). The final contrast injection did not reveal any intracranial occlusions within the territory of the internal carotid artery (F). At the 24-hour follow-up, there was no infarction on (G) the nonenhanced CT image, and the NIHSS score had decreased to 3 points. Image courtesy of RSNA.
DEXA receives major boost for osteoporosis screening
By Will Morton
Greater emphasis looks set to be put on the use of dual-energy x-ray absorptiometry (DEXA) for osteoporosis screening.
January 22, 2025
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ML model using CCTA, MRI data predicts MACE in cardiac patients
By Amerigo Allegretto
A machine-learning (ML) model that includes both CCTA and stress cardiac MRI data can accurately predict major adverse cardiovascular events (MACE).
January 20, 2025
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Patient death prompts RCR to act on gastric bands
By AuntMinnieEurope.com staff writers
A coroner's report has led to a pledge by the U.K. Royal College of Radiologists (RCR) to consider how to improve identification of "slipped" gastric bands on imaging.
January 16, 2025
Justice Scales Fire
Genetic testing, risk assessment tied to more breast MRI uptake
By Amerigo Allegretto
Women with high-risk pathological variants for breast cancer as identified by genetic testing and risk assessment are more likely to undergo breast MRI.
January 15, 2025
Mri Breast 400
PET scans can reduce unnecessary lymph node procedures
By Will Morton
Negative prostate-specific antigen PET scans can be used to avoid unnecessary pelvic lymph node dissection in certain prostate cancer patients undergoing radical prostatectomies.
January 10, 2025
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ChatGPT promising as support tool for researchers getting started in AI
By Amerigo Allegretto
ChatGPT could serve as an academic reference tool for early-career radiologists and researchers.
December 17, 2024
Ai Woman
LLMs outperform medical student in solving imaging cases
By Amerigo Allegretto
Large language models (LLMs) outperformed a medical student when solving imaging cases in a quiz widely used by medical professionals.
December 16, 2024
Chat Gpt
Irish radiologist, 37, dies of cancer
By AuntMinnieEurope.com staff writers
Tributes have been paid to a gifted young radiologist and mother-of-two from County Westmeath who has died from brain cancer, according to a report in the Irish media.
December 9, 2024
Irish Flag
Symphony of radiology: RSNA unveils art winners
By AuntMinnieEurope.com staff writers
The prize winners of the RSNA 2024 Art Contest are being displayed at the Learning Center at McCormick Place, Chicago, during the meeting.
December 2, 2024
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Siemens targets 3.3B patient touchpoints by 2030
By AuntMinnieEurope.com staff writers
In the fourth edition of its annual sustainability report, Siemens Healthineers has emphasized the need to address patient care and pressing global crises.
November 26, 2024
Planet Sustainability
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