Wen Qi Tan, Abstract Co-Author: Nothing to Disclose

Helmut Rumpel, Presenter: Nothing to Disclose

Jamie Ho, Abstract Co-Author: Nothing to Disclose

Chooi Sum Yeoh, Abstract Co-Author: Nothing to Disclose

Ling Ling Chan MBBS, FRCR, Abstract Co-Author: Nothing to Disclose

DTT of the 7-8th CNC has a potential role in surgical planning and neuro-navigation, and semi-quantitative monitoring of disease and treatment response in various 7-8th cranial nerve (CN) pathologies Its diminutive size, oblique course, proximity to the skull base and susceptibility of its CSF envelope to vascular pulsations present daunting technical challenges in the DTT of the 7-8th CNC and further discrimination of the 7th from the 8th MR parametrics can be optimized for an appropriate balance of improved in-plane resolution and SNR against prolonged scan time and subject comfort to improve the quality of DTT of the 7-8th CNC

Clinical utility of qualitative and quantitative DTT in 7-8th CNC pathologies Anatomical challenges in DTT of the 7-8th CNC Procedures to improve the quality of DTT of the 7-8th CNC and to optimize MR parameters will be illustrated, including: Matching scan angulation to the natural line of the 7-8th CNC to reduce “broken tract” phenomenon Increasing in-plane resolution and reducing slice thickness to improve spatial resolution and reduce partial volume effects, improving discrimination of the 7th from the 8th CN Use of diffusion-weighted read-out segmented EPI (DW-rs-EPI) to reduce geometric distortions and susceptibility artefacts inherent in the EPI sequence  

http://abstract.rsna.org/uploads/2014/14014217/14014217_stni.pdf

Tan, W, Rumpel, H, Ho, J, Yeoh, C, Chan, L, Challenges in Diffusion Tensor Tractography (DTT) of the 7-8th Cranial Nerve Complex (CNC) on High-Field MR.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14014217.html