RSNA 2004

Nov 30, 2004

The nighttime skyline of Chicago as seen from McCormick Place during RSNA 2004.

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Stroke Evt
EVT promising in patients with extracranial ICA occlusions
January 21, 2025
Images depict a 49-year-old female participant with cryptogenic cirrhosis who presented with a 3.2-cm liver lesion. This biopsy-confirmed hepatocellular carcinoma (HCC) with an initial categorization of Liver Imaging Reporting and Data System (LI-RADS) category LR-4 (probably HCC) at CT was upgraded to LR-5 (definitely HCC) at contrast-enhanced ultrasound (CEUS). (A) Precontrast CT images in the liver show vague hypoattenuation in the medial left hepatic lobe (arrows). (B) Arterial phase images demonstrate no definite arterial phase hyperenhancement (arrows). (C) Washout and an enhancing capsule (arrows) on a late-phase image resulted in an LR-4 categorization. (D) B-mode ultrasound shows a round hypoechoic nodule (arrows). (E) An early-phase CEUS image shows clear arterial-phase hyperenhancement (arrows); (F) No washout at one minute (arrows), and (G) late, mild washout at four minutes (arrows) resulted in a CEUS LR-5 categorization.
CEUS resolves indeterminate CT, MRI liver observations
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PET/CT can rule out CAV in heart transplant patients
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Machine learning can predict immunotherapy response in NSCLC patients
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EVT promising in patients with extracranial ICA occlusions
By Will Morton
Endovascular thrombectomy (EVT) and best medical treatment are both effective and safe options for patients with acute extracranial internal carotid artery occlusions.
January 21, 2025
Stroke Evt
CEUS resolves indeterminate CT, MRI liver observations
By Amerigo Allegretto
Contrast-enhanced ultrasound (CEUS) can resolve some high-risk indeterminate liver observations initially seen on CT or MRI.
January 21, 2025
Images depict a 49-year-old female participant with cryptogenic cirrhosis who presented with a 3.2-cm liver lesion. This biopsy-confirmed hepatocellular carcinoma (HCC) with an initial categorization of Liver Imaging Reporting and Data System (LI-RADS) category LR-4 (probably HCC) at CT was upgraded to LR-5 (definitely HCC) at contrast-enhanced ultrasound (CEUS). (A) Precontrast CT images in the liver show vague hypoattenuation in the medial left hepatic lobe (arrows). (B) Arterial phase images demonstrate no definite arterial phase hyperenhancement (arrows). (C) Washout and an enhancing capsule (arrows) on a late-phase image resulted in an LR-4 categorization. (D) B-mode ultrasound shows a round hypoechoic nodule (arrows). (E) An early-phase CEUS image shows clear arterial-phase hyperenhancement (arrows); (F) No washout at one minute (arrows), and (G) late, mild washout at four minutes (arrows) resulted in a CEUS LR-5 categorization.
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Cardiac PET/CT scans can effectively rule out moderate to severe cardiac allograft vasculopathy (CAV) in heart transplant patients.
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Machine learning can predict immunotherapy response in NSCLC patients
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Machine learning (ML) can help clinicians predict immunotherapy response in patients with inoperable non-small cell lung cancer (NSCLC).
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Sandy Coffta of Healthcare Administrative Partners discusses changes in reporting and reimbursement for mammography exams.
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Patient communication and education may be key for radiologists in the wake of the Surgeon General’s advisory on alcohol-related cancer risk.
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Contrast-enhanced mammography (CEM) has a slightly higher mean glandular dose than other breast imaging modalities.
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Cancer mortality rates continue to drop -- although incidence of the disease is rising in women, according to an annual study released by the ACS.
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POCUS useful for diagnosis of retained conception tissue
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Point-of-care ultrasound (POCUS) can be a useful tool for diagnosing the presence of retained conception tissue.
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Amy Thompson of Signify Research shares five predictions for the Imaging IT and AI markets in a new column.
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Simulated contrast-enhanced MRI helps assess prostate cancer
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Simulated contrast-enhanced MR images from noncontrast sequences using deep learning show promise for assessing clinically significant prostate cancer.
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