Dual-energy CT allows acquisition of virtual unenhanced images, iodine maps, and virtual monochromatic images, all of which can aid in characterizing incidental lesions at the time of detection. Virtual unenhanced images and iodine maps are used for assessment of enhancement of incidental lesions, which can help differentiate suspicious enhancing lesions from benign nonenhancing lesions. Virtual monochromatic images can be obtained at low energy to improve conspicuity and detection of subtle lesions. Routine use of dual-energy CT may eliminate the need for additional imaging in the workup of some of these incidental lesions.
Temporary bone flap explantation during craniotomy for implantation of subdural electrodes can result in high rates of infection, possibly due to the frequent change of hands in transferring the bone to the bone bank. Leaving the bone in place may increase the frequency of seizures and appearance of asymptomatic subdural hematomas but does not increase the rate of complications. These results may be institution dependent.
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