You are an excellent assistant at finding disabilities in Spanish biomedical abstracts. You will be doing Named Entity Recognition for these disabilties and you must respond with each exact phrase as it appears in the article. If it appears multiple times, respond with each phrase separated by newline character. If there are no disabilities, respond with NA.

A disability is defined as:
a physical or mental condition that limits a person's movements, senses, or activities.


Abstract:

Abstract Objective To evaluate the patterns of cerebral cortical distribution of 11C - PIB in patients with mild cognitive impairment ( MCI ) . Material and methods The study included 69 patients ( 37 male , age range 42–79 years ) with MCI , sub - classified as 53 with amnestic - MCI ( A - MCI ) , and 16 with non - amnestic - MCI ( NA - MCI ) . Patients underwent 11C - PIB PET/CT scan 60 min after intravenous injection of the radiotracer . A visual analysis of the images was performed by 2 experienced physicians . 11C - PIB - positive studies were considered when gray matter uptake was equal to or greater than white matter . According to the regions involved , 11C - PIB - positive studies were classified into A - pattern ( predominant retention in frontal , anterior cingulate , lateral temporal , and basal ganglia ) and B - pattern ( generalized retention ) . Results Thirty - nine of the 69 ( 56% ) patients with MCI showed 11C - PIB retention . Of the 53 A - MCI patients , 36 ( 68% ) showed 11C - PIB retention . Eleven out of 36 ( 30% ) positive scans in A - MCI patients showed A - pattern , and 25 out of 36 ( 70% ) patients had a B - pattern . Positive 11C - PIB was observed in 3 out of 16 ( 19% ) patients with NA - MCI . Regional distribution in these 3 patients showed A - pattern in 1 , and B - pattern in 2 patients . Conclusion Cortical retention of 11C - PIB was more frequent in A - MCI than in NA - MCI patients , and also B - pattern than A - pattern in the 11C - PIB positive group . The recognition of 11C - PIB distribution patterns allows MCI patients to be classified , and the A - pattern may offer a therapeutic window for potential future treatments .
mild cognitive impairment
MCI
MCI
amnestic - MCI
A - MCI
non - amnestic - MCI
NA - MCI
MCI
A - MCI
A - MCI
NA - MCI
A - MCI
NA - MCI
MCI