[PDF] Top 20 Optic Nerve Diffusion Measurement from Diffusion Weighted Imaging in Optic Neuritis

... applied sequentially along the three orthogonal axes). A min- imum of 40 signal intensity averages were collected for off-line averaging; during imaging, subjects were asked to close their eyes and to avoid any ... See full document

... away from a black screen and asked to fix his eye at a central ...moved from a non-seeing area to the seeing area and the patients visual field defect and blind spot defects are ... See full document

... of diffusion-weighted imaging in a patient with acute ION, and their results demonstrated that the ADC value was decreased at day 2 after the patient’s acute ...was from 6 to 30 days, during ... See full document

... MR imaging study. Rou- tine MR imaging of the brain and orbits was performed to exclude intracranial and intraorbital ...T1- weighted acquisition based on a magne- tization-prepared rapid acquisition ... See full document

... rapid optic nerve DTI sequence performed with standard coils in a clinically acceptable timeframe (⬍10 minutes) and 2) re- late abnormal water diffusion in the optic nerve to measures ... See full document

... with nerve fiber damage; 3) patients with relative pupillary conduction block or abnormal VEP; 4) no clinical or labora- tory evidence of compression, ischemic, toxic, genetic, metabolic, or invasive optic ... See full document

... the optic nerve, and the coronal images were placed on the sagittal cuts perpendicular to the optic ...OsiriX Imaging Software ...the optic nerve (Fig ...1 optic ... See full document

... the optic nerves on T1-weighted imaging, bright T2 signal along the optic nerve or chiasm, and postgadolinium enhance- ...the optic nerve have been shown to be present in ... See full document

... approval from our institutional review board. Using the data base from our neuro-ophthalmology clinic and our in-house radiology report search engine, we identified 19 patients (4 men, 15 women; me- dian ... See full document

... ADC measurement of the ON is challenging due to the small diameter of the ON because there is the potential of partial volume averaging with surrounding CSF, fat, and osseous struc- ...times from injury to ... See full document

... experience, it is infrequently performed because of the risk of introducing infection and because it frequently yields equivocal results. The procedure is generally reserved for children with high pretest probability of ... See full document

... anterior optic neuritis (papillitis) in a non-endemic ...paresthesias from his right foot into his right arm and face followed by speech arrest and clumsiness of his right ...mild optic ... See full document

... WI signal decreases more rapidly, which severely affects the signal-to-noise ratio of the images and impedes the postproces- sing. Therefore, it is unnecessary to apply excessively high b values. Moreover, at smaller b ... See full document

... This hospital based retrospective study was conducted in the department of Radio-diagnosis and neurosurgery wards of GMC Hospital Jammu from September 2017 to August 2019. A total of 100 patients with diagnosis of ... See full document

... At study entry, the gender, age, height and weight of the subject were collected. The ultrasound examination was conducted in B-mode by using a Philips Envisor C (M2540A) ultrasound system and a 12–3 MHz linear array ... See full document

... In late summer of 1998, an 11-year-old boy developed severe headaches, nausea, vomiting, and low-grade fevers. Four days later, his pediatrician noted 3 annular lesions suggestive of ery- thema migrans on his thigh, ... See full document

... ON is essentially a clinical diagnosis, and a careful history and examination is critical in differentiating the common phe- notype of typical ON from rarer, atypical, steroid-responsive, and infective causes. ... See full document

... photoreceptors and inhibitory bipolar cells. However, animal studies on the retinal changes after optic nerve transection showed that only the innermost retinal layers are impaired at the light and electron ... See full document

... the measurement of one eye of participants may be suffi- cient to demonstrate alterations in the retinal microcircu- ...the measurement of BFVs was not fully automated since the vessels were manually traced ... See full document

... of diffusion-weighted imaging (2–4) or quantitative tissue diffusion measurements (1) within vertebral marrow, particu- larly when fat saturation or selective water excitation is not included ... See full document