I saw the “crescent” sign: Waxing clues and waning lumen

IF 1.5 4区医学 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Clinical Imaging Pub Date : 2025-08-22 DOI:10.1016/j.clinimag.2025.110597

Zoe Ziwei Chen , Anna Luisa Kuhn

引用次数: 0

Abstract

The “crescent” sign is characterized by a crescent-shaped rim of hyperintensity on T1-weighted fat-saturated magnetic resonance imaging (MRI), surrounding a narrowed arterial lumen. It represents an intramural hematoma, most often seen in cases of arterial dissection. Although the differential diagnosis for neck pain and headache is broad, the “crescent” sign in the appropriate clinical and radiologic setting is highly suggestive of an internal carotid artery (ICA) dissection. In this case study, we present a 58-year-old man with a history of hypertension and hyperlipidemia who presented with acute onset headache and neck pain. Imaging revealed classic features of left ICA dissection, including vessel wall irregularity on computed tomography angiography (CTA) and the crescent sign on MRI.

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我看到了“新月”的标志：渐增的线索和渐弱的腔体

“新月”征的特征是在t1加权脂肪饱和磁共振成像（MRI）上表现为新月形的高强度边缘，围绕狭窄的动脉管腔。它代表壁内血肿，最常见于动脉夹层。虽然颈部疼痛和头痛的鉴别诊断很广泛，但在适当的临床和放射学背景下，“新月”征高度提示颈内动脉剥离。在这个案例研究中，我们提出了一个58岁的男性高血压和高脂血症的历史，谁提出急性头痛和颈部疼痛。影像学显示左侧ICA夹层的典型特征，包括计算机断层血管造影（CTA）的血管壁不规则和MRI的新月征。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Clinical Imaging 医学-核医学

CiteScore

4.60

自引率

0.00%

发文量

265

审稿时长

35 days

期刊介绍： The mission of Clinical Imaging is to publish, in a timely manner, the very best radiology research from the United States and around the world with special attention to the impact of medical imaging on patient care. The journal''s publications cover all imaging modalities, radiology issues related to patients, policy and practice improvements, and clinically-oriented imaging physics and informatics. The journal is a valuable resource for practicing radiologists, radiologists-in-training and other clinicians with an interest in imaging. Papers are carefully peer-reviewed and selected by our experienced subject editors who are leading experts spanning the range of imaging sub-specialties, which include: -Body Imaging- Breast Imaging- Cardiothoracic Imaging- Imaging Physics and Informatics- Molecular Imaging and Nuclear Medicine- Musculoskeletal and Emergency Imaging- Neuroradiology- Practice, Policy & Education- Pediatric Imaging- Vascular and Interventional Radiology