H Akrami1, R M Leahy2, A Irimia1,3, P E Kim4, C N Heck5, A A Joshi6. 1. From the Department of Biomedical Engineering (H.A., A.I.). 2. Ming Hsieh Department of Electrical and Computer Engineering (R.M.L., A.A.J.). 3. Leonard Davis School of Gerontology (A.I.). 4. Departments of Radiology (P.E.K.). 5. Neurology (C.N.H.), University of Southern California, Los Angeles, California. 6. Ming Hsieh Department of Electrical and Computer Engineering (R.M.L., A.A.J.) ajoshi@usc.edu.
Abstract
BACKGROUND AND PURPOSE: Although posttraumatic epilepsy is a common complication of traumatic brain injury, the relationship between these conditions is unclear and early posttraumatic epilepsy detection and prevention remain major unmet clinical challenges. This study aimed to identify imaging biomarkers that predict posttraumatic epilepsy among survivors of traumatic brain injury on the basis of an MR imaging data set. MATERIALS AND METHODS: We performed tensor-based morphometry to analyze brain-shape changes associated with traumatic brain injury and to derive imaging features for statistical group comparison. Additionally, machine learning was used to identify structural anomalies associated with brain lesions. Automatically generated brain lesion maps were used to identify brain regions where lesion load may indicate an increased incidence of posttraumatic epilepsy. We used 138 non-posttraumatic epilepsy subjects for training the machine learning method. Validation of lesion delineation was performed on 15 subjects. Group analysis of the relationship between traumatic brain injury and posttraumatic epilepsy was performed on an independent set of 74 subjects (37 subjects with and 37 randomly selected subjects without epilepsy). RESULTS: We observed significant F-statistics related to tensor-based morphometry analysis at voxels close to the pial surface, which may indicate group differences in the locations of edema, hematoma, or hemorrhage. The results of the F-test on lesion data showed significant differences between groups in both the left and right temporal lobes. We also saw significant differences in the right occipital lobe and cerebellum. CONCLUSIONS: Statistical analysis suggests that lesions in the temporal lobes, cerebellum, and the right occipital lobe are associated with an increased posttraumatic epilepsy incidence.
BACKGROUND AND PURPOSE: Although posttraumatic epilepsy is a common complication of traumatic brain injury, the relationship between these conditions is unclear and early posttraumatic epilepsy detection and prevention remain major unmet clinical challenges. This study aimed to identify imaging biomarkers that predict posttraumatic epilepsy among survivors of traumatic brain injury on the basis of an MR imaging data set. MATERIALS AND METHODS: We performed tensor-based morphometry to analyze brain-shape changes associated with traumatic brain injury and to derive imaging features for statistical group comparison. Additionally, machine learning was used to identify structural anomalies associated with brain lesions. Automatically generated brain lesion maps were used to identify brain regions where lesion load may indicate an increased incidence of posttraumatic epilepsy. We used 138 non-posttraumatic epilepsy subjects for training the machine learning method. Validation of lesion delineation was performed on 15 subjects. Group analysis of the relationship between traumatic brain injury and posttraumatic epilepsy was performed on an independent set of 74 subjects (37 subjects with and 37 randomly selected subjects without epilepsy). RESULTS: We observed significant F-statistics related to tensor-based morphometry analysis at voxels close to the pial surface, which may indicate group differences in the locations of edema, hematoma, or hemorrhage. The results of the F-test on lesion data showed significant differences between groups in both the left and right temporal lobes. We also saw significant differences in the right occipital lobe and cerebellum. CONCLUSIONS: Statistical analysis suggests that lesions in the temporal lobes, cerebellum, and the right occipital lobe are associated with an increased posttraumatic epilepsy incidence.
Authors: Simon Sean Keller; John Robin Highley; Marta Garcia-Finana; Vanessa Sluming; Roozbeh Rezaie; Neil Roberts Journal: J Anat Date: 2007-08-29 Impact factor: 2.610
Authors: F Angeleri; J Majkowski; G Cacchiò; A Sobieszek; S D'Acunto; R Gesuita; A Bachleda; G Polonara; L Królicki; M Signorino; U Salvolini Journal: Epilepsia Date: 1999-09 Impact factor: 5.864
Authors: Duygu Tosun; Kevin Dabbs; Rochelle Caplan; Prabha Siddarth; Arthur Toga; Michael Seidenberg; Bruce Hermann Journal: Brain Date: 2011-03-11 Impact factor: 13.501
Authors: John K Yue; Mary J Vassar; Hester F Lingsma; Shelly R Cooper; David O Okonkwo; Alex B Valadka; Wayne A Gordon; Andrew I R Maas; Pratik Mukherjee; Esther L Yuh; Ava M Puccio; David M Schnyer; Geoffrey T Manley Journal: J Neurotrauma Date: 2013-09-24 Impact factor: 5.269
Authors: Leonardo Bonilha; Chris Rorden; Gabriela Castellano; Fabrício Pereira; Pablo A Rio; Fernando Cendes; Li M Li Journal: Arch Neurol Date: 2004-09
Authors: Dominique Duncan; Giuseppe Barisano; Ryan Cabeen; Farshid Sepehrband; Rachael Garner; Adebayo Braimah; Paul Vespa; Asla Pitkänen; Meng Law; Arthur W Toga Journal: Front Neuroinform Date: 2018-12-20 Impact factor: 4.081