The "twinkling star" sign: an aid in differentiating pulmonary vessels from pulmonary nodules on computed tomograms.
Radial linear artifacts are visualized on computed tomographic (CT) images of pulmonary vessels, whereas pulmonary nodules are usually not associated with these artifacts. In vitro evidence indicates that pulsation of an object of relatively high density compared to surrounding structures enhances production of these artifacts.
D006099:Granuloma / Q000000981:diagnostic imaging; D006801:Humans; D008168:Lung / Q000098:blood supply* / Q000000981:diagnostic imaging; D008175:Lung Neoplasms / Q000000981:diagnostic imaging* / Q000556:secondary; D012189:Retrospective Studies; D003074:Solitary Pulmonary Nodule / Q000000981:diagnostic imaging* / Q000556:secondary; D014057:Tomography, X-Ray Computed