Abstract

"The scintillation or twinkling artifact is a not fully understood phenomenon that appears in Color Doppler Ultrasound (U.S.) examinations as a rapid alternation of color immediately behind a stationary echogenic object, giving it a false appearance of movement. This sign is useful in some clinical conditions, especially in urolithiasis, since it increases diagnostic accuracy and sensitivity; therefore, every radiologist should be fully acquainted with this radiologic sign."