Robert Falk, MD

CT
Increase in CCTA exams expected to mirror TAVR growth trend
A steady increase in the volume of coronary CT angiography (CCTA) exams is occurring, especially at mid- to high-level community hospitals across the country.
December 26, 2023
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Stroke Evt
Interventional
EVT promising in patients with extracranial ICA occlusions
Endovascular thrombectomy (EVT) and best medical treatment are both effective and safe options for patients with acute extracranial internal carotid artery occlusions.
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.
Ultrasound
CEUS resolves indeterminate CT, MRI liver observations
Ctca
Molecular Imaging
PET/CT can rule out CAV in heart transplant patients
Lung Ct Images
CT
Machine learning can predict immunotherapy response in NSCLC patients
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Economics
Current topics in mammography
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