Background and Purpose: The sensitivity of contrast enhanced 3D FLAIR has not been assessed in patients with idiopathic intracranial hypertension (IIH). The purpose of this study was to evaluate whether hyperintensity of the optic nerve/optic nerve head on contrast enhanced 3D FLAIR imaging is associated with papilledema in patients with IIH. Materials and Methods: A retrospective review was conducted from 2012 to 2015 of patients with clinically diagnosed IIH and age and sex matched controls who had MRI imaging with CE 3D FLAIR. Two neuroradiologists graded each optic nerve/optic nerve head on a scale of 0-3. This grade was then correlated with the Frisén scale, an ophthalmologic scale used for grading papilledema from 0 (normal) – 5 (severe edema). To estimate the correlation between the MR and Frisén scores Kendall's tau coefficient was calculated. Results: 46 patients (3 males, 43 females) with IIH and 61 controls (5 males, 56 females) with normal MRIs were included in this study. For both eyes, there was moderate correlation between the two scales (OD: T=0.47, 95%CI= (0.31,0.57), OS: T=0.38, 95%CI= (0.24,0.49)). Inter-reader reliability for MR scores showed high inter reader reliability (OD: K=0.76 95%CI= (0.55,0.88), OS: K=0.87 95%CI= (0.78,0.94)). CE 3D FLAIR imaging correlates with the Frisén scale for moderate to severe papilledema and less so for mild papilledema. Conclusion: Hyperintensity of the optic nerve/optic nerve head on CE 3D FLAIR is sensitive for the detection of papilledema in patients with IIH which may be useful in a setting where prompt diagnosis is crucial.

APDR). The survey obtained demographic data and investigated the importance of several factors pertinent to IR training program selection. A 5-point Likert scale was used to grade 22 factors from "not at all important" (1) to "very important." (5). Results: A total of 181 responses were completed with 142 males (79.8%) and 36 females (20.2%) with an average age of 29.2 years. Respondent composition was 72 (40.45%) medical students, 96 (53.93%) residents, and 10 (5.62%) fellows. 52 respondents (28.9%) are planning on applying to residency and planning on entering the IR residency match for 2018. The top 5 rated out of 22 possible factors were variety of IR cases (4.81 ± 0.47), procedural volume (4.63 ± 0.54), perceived happiness of the trainees at the institution (4.52 ± 0.70), job placement/accomplishments of prior fellows (4.44 ± 0.75), and interpersonal interactions with faculty/ fellows/residents during interview (4.39 ± 0.79). The lowest 5 rated factors were diagnostic radiology class size (2.67 ± 1.15), moonlighting opportunities (2.93 ± 1.18), potential for research opportunities (3.19 ± 1.15), salary/benefits/compensation (3.22 ± 1.03), and ICU rotation experience (3.22 ± 1.28). Conclusions: Potential future trainees most value diversified procedural exposure, employment opportunities after training, and interpersonal interactions in choosing an IR program. This information is useful to newly established IR residencies seeking to best structure and market their program.

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