title: The open-ring sign.
authors: Department of MRI, Grant Medical College, Sir JJ Group of Hospitals, Mumbai, India. dratasiddiqui@yahoo.com
authors: Ata
authors: A
authors: Siddiqui
authors: Anupam
authors: A
authors: Sahni
authors: Satish
authors: S
authors: Khadilkar
mesh_terms: D002648:Child; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009460:Neurologic Examination; D011782:Quadriplegia / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology*; D014057:Tomography, X-Ray Computed; D014786:Vision Disorders / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology*