Double inversion recovery in detection of perilesional gliosis in calcific cysticercosis

Calcified brain lesions are common in the computed tomographic (CT) studies of people with seizures and when symptoms appear in individuals with only calcified disease, some show perilesional brain edema around one or more of the calcifications. The fluid-attenuated inversion recovery (FLAIR) sequence suppresses the signal intensity of the cerebrospinal fluid (CSF), while the short-inversion time (TI) inversion recovery (STIR) sequence suppresses the signal of fat tissue. [10] It involves the application of two different inversion pulses and a signal is obtained with the fast spin echo (FSE) method, thereby enabling the signals of two different tissues with two greatly different T1 relaxation times to be simultaneously suppressed.