Double Ring Sign. It has numerous clinical correlates, including neurologic and endocrine pathologies, making timely clinical diagnosis and further investigation crucial. The “double ring sign” is a characteristic configuration of the optic nerve head that is observed upon funduscopic examination in patients with optic nerve hypoplasia (onh).
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It has numerous clinical correlates, including neurologic and endocrine pathologies, making timely clinical diagnosis and further investigation crucial. It consists of the decidua parietalis (lining the uterine cavity) and decidua capsularis (lining the gestational sac) and is seen as two concentric rings. Web it is a unilateral or bilateral malformation of the optic nerve with a wide spectrum of severity. The sign appears as a peripapillary yellowish, mottled halo that surrounds the hypoplastic optic disk. The “double ring sign” is a characteristic configuration of the optic nerve head that is observed upon funduscopic examination in patients with optic nerve hypoplasia (onh). The retinal vessels may appear tortuous or have fewer branches, and special imaging of the retina (optical coherence tomography oct). Web the double decidual sac sign (ddss) is a useful feature on early pregnancy ultrasound to confirm an early intrauterine pregnancy (iup) when the yolk sac or embryo is still not visualized. Web the tubal ring sign , also referred to as a bagel sign or blob sign, is one of the ultrasound signs of a tubal ectopic pregnancy. On both susceptibility weighted imaging (swi) and t2wi it consists of two concentric rims sur. It is said to have a 95% positive predictive value (ppv) for ectopic pregnancy.
Web the tubal ring sign , also referred to as a bagel sign or blob sign, is one of the ultrasound signs of a tubal ectopic pregnancy. The sign appears as a peripapillary yellowish, mottled halo that surrounds the hypoplastic optic disk. It has numerous clinical correlates, including neurologic and endocrine pathologies, making timely clinical diagnosis and further investigation crucial. It consists of the decidua parietalis (lining the uterine cavity) and decidua capsularis (lining the gestational sac) and is seen as two concentric rings. The “double ring sign” is a characteristic configuration of the optic nerve head that is observed upon funduscopic examination in patients with optic nerve hypoplasia (onh). It comprises an echogenic ring that surrounds an unruptured ectopic pregnancy. On both susceptibility weighted imaging (swi) and t2wi it consists of two concentric rims sur. Web the tubal ring sign , also referred to as a bagel sign or blob sign, is one of the ultrasound signs of a tubal ectopic pregnancy. Web the dual or double rim sign is seen on mri in approximately 75% of cerebral abscesses and is helpful in distinguishing an abscess from a glioblastoma. The retinal vessels may appear tortuous or have fewer branches, and special imaging of the retina (optical coherence tomography oct). Web double ring sign in optic nerve head hypoplasia indian j ophthalmol.
