Furkan Ufuk, Iclal Ocak, Lydia Chelala, Luis Landeras
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The reverse halo sign in emergency chest CT: A diagnostic guide across diverse pulmonary conditions.
The atoll sign, also known as the reverse halo sign (RHS), is defined by a central ground-glass opacity encircled by a rim of consolidation. Originally described in the context of organizing pneumonia, it is now recognized across a spectrum of conditions-including infectious, inflammatory, vascular, malignant, and traumatic pathologies. This pictorial essay examines the various clinical scenarios in which the RHS is observed on emergency CT, highlighting its crucial role in differential diagnosis and patient management.
期刊介绍:
To advance and improve the radiologic aspects of emergency careTo establish Emergency Radiology as an area of special interest in the field of diagnostic imagingTo improve methods of education in Emergency RadiologyTo provide, through formal meetings, a mechanism for presentation of scientific papers on various aspects of Emergency Radiology and continuing educationTo promote research in Emergency Radiology by clinical and basic science investigators, including residents and other traineesTo act as the resource body on Emergency Radiology for those interested in emergency patient care Members of the American Society of Emergency Radiology (ASER) receive the Emergency Radiology journal as a benefit of membership!