blood oxygen level dependent

blood ox·y·gen lev·el de·pen·dent

(blŭd ok'si-jĕn lev'ĕl dĕ-pen'dĕnt)
A functionalMRI technique that uses the differences in magnetic susceptibility between oxyhemoglobin and deoxyhemoglobin to image areas of activated cerebral cortex.
References in periodicals archive ?
The study participants were shown a series of short videos featuring either sexually explicit content or sports whilst their brain activity was monitored using functional magnetic resonance imaging (fMRI), which uses a blood oxygen level dependent (BOLD) signal to measure brain activity.
Using blood oxygen level dependent (BOLD) functional MRI (fMRf) to determine neuronal activity following forepaw or hindpaw stimulation, MPC-treated animals showed a significant increase in neuronal activity compared with conlrols in both the infarct area (p less than 0.01) and in the primary motor cortex on the side of the infarct (p less than 0.05).
Using blood oxygen level dependent (BOLD) functional MRI (fMRI) to determine neuronal activity following forepaw or hindpaw stimulation, MPC-treated animals showed a significant increase in neuronal activity compared with controls in both the infarct area (p less than 0.01) and in the primary motor cortex on the side of the infarct (p less than 0.05).
Preoperative 3T high field blood oxygen level dependent functional magnetic resonance imaging for glioma involving sensory cortical areas.
The new technique, known as BOLD (blood oxygen level dependent) MRI, can detect oxygen levels in tumors without the need for an invasive procedure.
During a simple finger-tapping task, changes were assessed in cerebral blood flow, cerebral metabolic rate of oxygen consumption, and blood oxygen level dependent mapping within a subcortical region, the lenticular nuclei of the basal ganglia.