OBJECTIVE: To evaluate the necessity of neuroimaging in @entity1 with acute, isolated @entity2194 . METHODS: A prospective case series evaluating diagnostic technology results in 93 @entity1 older than 50 years with acute isolated mononeuropathies was performed. @entity1 were included in the study if they had new-onset @entity892 with an isolated @entity129 ( @entity2896 ) and no other signs of @entity51 . All @entity1 had @entity2287 -enhanced magnetic resonance imaging (MRI). The number of @entity1 with lesions noted on MRI and the overall cost of imaging the @entity1 were determined. Cost analysis of the MRI was conducted using Current Procedural Terminology codes and Medicare costs in 2010 dollars. Cost utility was estimated using cost data as well as published utility values for adults with @entity892 and sex-specific life tables for life expectancy in the United States. RESULTS: Four of 93 @entity1 had lesions on MRI; however, only 1 of the 93 @entity1 had a lesion related to the @entity129 . The total modeled cost of imaging for these 93 @entity1 was  131,688 to determine an underlying cause in 1 @entity1 with no change in treatment. The estimated cost utility for the @entity1 with a causative lesion found by MRI was  90.19 for diagnosis alone. CONCLUSIONS: It may not be medically necessary to perform MRI scanning on every @entity1 with an isolated @entity2896 . In adults older than 50 years with an @entity4216 , physicians should carefully review the @entity1 ' history and findings to determine which @entity1 to image at the initial evaluation.

Neuroimaging and acute XXXX : a prospective study.

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients', 'patient'] @entity129 :: ('MESH:D003389', 'Disease') :: ['cranial neuropathy', 'cranial mononeuropathy'] @entity2194 :: ('MESH:D005128', 'Disease') :: ['ocular motor mononeuropathies'] @entity51 :: ('MESH:D009461', 'Disease') :: ['neurologic dysfunction'] @entity2896 :: ('MESH:D020434', 'Disease') :: ['cranial nerve III, IV, or VI palsy'] @entity4216 :: ('MESH:D020422', 'Disease') :: ['isolated mononeuropathy'] @entity892 :: ('MESH:D004172', 'Disease') :: ['diplopia'] @entity2287 :: ('MESH:D005682', 'Chemical') :: ['gadolinium']
@entity2194 :: (MESH:D005128,Disease) :: ['ocular motor mononeuropathies']
