Masaki Iwasaki

Summary

Publications

  1. doi request reprint Parental satisfaction and seizure outcome after corpus callosotomy in patients with infantile or early childhood onset epilepsy
    Masaki Iwasaki
    Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan
    Seizure 22:303-5. 2013
  2. doi request reprint Complete remission of seizures after corpus callosotomy
    Masaki Iwasaki
    Department of Neurosurgery, Tohoku University Graduate School of Medicine, Takuto Rehabilitation Center for Children, Sendai, Japan
    J Neurosurg Pediatr 10:7-13. 2012
  3. doi request reprint Lateralization of interictal spikes after corpus callosotomy
    Masaki Iwasaki
    Department of Neurosurgery, Tohoku University School of Medicine, Sendai, Miyagi, Japan
    Clin Neurophysiol 122:2121-7. 2011
  4. doi request reprint Time-varying inter-hemispheric coherence during corpus callosotomy
    Eiichi Okumura
    Department of Epileptology, Tohoku University School of Medicine, Sendai, Miyagi, Japan
    Clin Neurophysiol 124:2091-100. 2013
  5. doi request reprint Acute encephalitis with refractory, repetitive partial seizures: Pathological findings and a new therapeutic approach using tacrolimus
    Yuko Sato
    Department of Pediatrics, Tohoku University School of Medicine, Sendai, Japan
    Brain Dev 38:772-6. 2016
  6. doi request reprint Clinical profiles for seizure remission and developmental gains after total corpus callosotomy
    Masaki Iwasaki
    Department of Neurosurgery, Tohoku University School of Medicine, Sendai, Miyagi, Japan Electronic address
    Brain Dev 38:47-53. 2016
  7. doi request reprint High frequency oscillations are less frequent but more specific to epileptogenicity during rapid eye movement sleep
    Rie Sakuraba
    Department of Epileptology, Tohoku University School of Medicine, Sendai, Japan
    Clin Neurophysiol 127:179-86. 2016
  8. doi request reprint Practical surgical indicators to identify candidates for radical resection of insulo-opercular gliomas
    Tomohiro Kawaguchi
    Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
    J Neurosurg 121:1124-32. 2014
  9. doi request reprint Electro- and magneto-encephalographic spike source localization of small focal cortical dysplasia in the dorsal peri-rolandic region
    Hisashi Itabashi
    Department of Epileptology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan Department of Pediatrics, Dokkyo Medical University Koshigaya Hospital, Koshigaya, Saitama, Japan
    Clin Neurophysiol 125:2358-63. 2014
  10. doi request reprint RBPJ is disrupted in a case of proximal 4p deletion syndrome with epilepsy
    Tojo Nakayama
    Department of Pediatrics, Tohoku University School of Medicine, Aoba ku, Sendai, Japan Electronic address
    Brain Dev 36:532-6. 2014

Collaborators

Detail Information

Publications33

  1. doi request reprint Parental satisfaction and seizure outcome after corpus callosotomy in patients with infantile or early childhood onset epilepsy
    Masaki Iwasaki
    Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan
    Seizure 22:303-5. 2013
    ..To elucidate the benefit of corpus callosotmy in terms of parental satisfaction and seizure outcome...
  2. doi request reprint Complete remission of seizures after corpus callosotomy
    Masaki Iwasaki
    Department of Neurosurgery, Tohoku University Graduate School of Medicine, Takuto Rehabilitation Center for Children, Sendai, Japan
    J Neurosurg Pediatr 10:7-13. 2012
    ..The object of this study was to investigate clinical factors associated with long-term seizure remission after total corpus callosotomy in patients with infantile or early childhood onset epilepsy...
  3. doi request reprint Lateralization of interictal spikes after corpus callosotomy
    Masaki Iwasaki
    Department of Neurosurgery, Tohoku University School of Medicine, Sendai, Miyagi, Japan
    Clin Neurophysiol 122:2121-7. 2011
    ..Corpus callosotomy may limit secondary bilateral synchrony into the primary epileptogenic hemisphere. This study investigated whether pre-operative EEG can predict post-operative spike lateralization...
  4. doi request reprint Time-varying inter-hemispheric coherence during corpus callosotomy
    Eiichi Okumura
    Department of Epileptology, Tohoku University School of Medicine, Sendai, Miyagi, Japan
    Clin Neurophysiol 124:2091-100. 2013
    ..The present study investigated how and when bilateral synchrony is suppressed in the anterior and then posterior steps of corpus callosotomy...
  5. doi request reprint Acute encephalitis with refractory, repetitive partial seizures: Pathological findings and a new therapeutic approach using tacrolimus
    Yuko Sato
    Department of Pediatrics, Tohoku University School of Medicine, Sendai, Japan
    Brain Dev 38:772-6. 2016
    ..This is the first case report of the pathological findings of AERRPS and showing an effective therapeutic approach using tacrolimus. Tacrolimus may be an effective immunosuppressant, especially for patients with severe AERRPS. ..
  6. doi request reprint Clinical profiles for seizure remission and developmental gains after total corpus callosotomy
    Masaki Iwasaki
    Department of Neurosurgery, Tohoku University School of Medicine, Sendai, Miyagi, Japan Electronic address
    Brain Dev 38:47-53. 2016
    ..This study was aimed to determine what preoperative profiles were associated with seizure remission after corpus callosotomy and whether such seizure outcome was associated with the postoperative developmental outcome...
  7. doi request reprint High frequency oscillations are less frequent but more specific to epileptogenicity during rapid eye movement sleep
    Rie Sakuraba
    Department of Epileptology, Tohoku University School of Medicine, Sendai, Japan
    Clin Neurophysiol 127:179-86. 2016
    ....
  8. doi request reprint Practical surgical indicators to identify candidates for radical resection of insulo-opercular gliomas
    Tomohiro Kawaguchi
    Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
    J Neurosurg 121:1124-32. 2014
    ..Radical resection of insulo-opercular gliomas is still challenging, and selection of ideal patients can reduce risk and obtain better outcomes...
  9. doi request reprint Electro- and magneto-encephalographic spike source localization of small focal cortical dysplasia in the dorsal peri-rolandic region
    Hisashi Itabashi
    Department of Epileptology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan Department of Pediatrics, Dokkyo Medical University Koshigaya Hospital, Koshigaya, Saitama, Japan
    Clin Neurophysiol 125:2358-63. 2014
    ..Small focal cortical dysplasia (FCD) may be ambiguous or overlooked on magnetic resonance (MR) imaging. Source localization of EEG and magnetoencephalography (MEG) spikes was evaluated to confirm the diagnosis of small FCD...
  10. doi request reprint RBPJ is disrupted in a case of proximal 4p deletion syndrome with epilepsy
    Tojo Nakayama
    Department of Pediatrics, Tohoku University School of Medicine, Aoba ku, Sendai, Japan Electronic address
    Brain Dev 36:532-6. 2014
    ..Our findings, combined with those of previous studies, strongly suggest that RBPJ is causative for proximal 4p deletion syndrome and epilepsy in this case...
  11. doi request reprint Unique discrepancy between cerebral blood flow and glucose metabolism in hemimegalencephaly
    Mitsugu Uematsu
    Department of Pediatrics, Tohoku University School of Medicine, Aoba ku, Sendai 980 8574, Japan
    Epilepsy Res 92:201-8. 2010
    ....
  12. ncbi request reprint [Magnetoencephalographic localization of multiple seizure foci for surgical treatment of intractable frontal lobe epilepsy: confirmation with intra-operative electrocorticography]
    Hiroshi Shamoto
    Department of Neurosurgery, Kohnan Hospital, 4 20 1 Nagamachi minami, Taihaku ku, Sendai, Miyagi 982 8523, Japan
    No Shinkei Geka 30:417-23. 2002
    ..MEG can be a useful noninvasive method for presurgical evaluation of intractable FLE...
  13. doi request reprint Somatotopic distribution of peri-rolandic spikes may predict prognosis in pediatric-onset epilepsy with sensorimotor seizures
    Yosuke Kakisaka
    Department of Pediatrics, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
    Clin Neurophysiol 122:869-73. 2011
    ..The present study evaluated whether spike source localization is predictive of different prognosis of epilepsy and/or cognitive function...
  14. doi request reprint Dramatic response after functional hemispherectomy in a patient with epileptic encephalopathy carrying a de novo COL4A1 mutation
    Naomi Hino-Fukuyo
    Center for Genomic Medicine, Tohoku University Hospital, Sendai, Japan Department of Pediatrics, Tohoku University School of Medicine, Sendai, Japan Electronic address
    Brain Dev . 2016
    ..Furthermore, pediatric neurologists should be aware of an undiagnosed COL4A1 mutation when a patient presents with an unexplained neurological phenotype, such as mild hemiparesis, even in the absence of porencephaly...
  15. ncbi request reprint Differences in sleep architecture between left and right temporal lobe epilepsy
    Miki Nakamura
    Department of Epileptology, Tohoku University Graduate School of Medicine, 2 1 Seiryo machi, Aoba ku, Sendai, Miyagi, 980 8575, Japan
    Neurol Sci . 2016
    ..Laterality of the irritative epileptic focus versus destructive lesion may have different effects on the sleep macrostructures...
  16. doi request reprint Earlier tachycardia onset in right than left mesial temporal lobe seizures
    Kazuhiro Kato
    From the Departments of Epileptology K K, K J, H I, Y K, N N, Neurosurgery M I, and Neurology K K, M A, Tohoku University Graduate School of Medicine, Sendai, Japan
    Neurology 83:1332-6. 2014
    ..To clarify whether the presence and timing of peri-ictal heart rate (HR) change is a seizure lateralizing sign in patients with mesial temporal lobe epilepsy (mTLE)...
  17. doi request reprint The usefulness of subtraction ictal SPECT and ictal near-infrared spectroscopic topography in patients with West syndrome
    Kazuhiro Haginoya
    Department of Pediatrics, Tohoku University School of Medicine, Sendai 980 8574, Japan Department of Pediatric Neurology, Takuto Rehabilitation Center for Children, Sendai 982 0241, Japan Electronic address
    Brain Dev 35:887-93. 2013
    ..The ictal near-infrared spectroscopic topography should be more investigated to see if this is useful tool for presurgical evaluation. ..
  18. ncbi request reprint [A primary epileptogenic tuber revealed after corpus callosotomy in a patient with tuberous sclerosis complex and multiple tubers]
    Keisuke Sato
    Department of Neurosurgery, Tohoku University Graduate School of Medicine
    No Shinkei Geka 41:421-8. 2013
    ..Repeat pre-surgical evaluation is important after corpus callosotomy in patients with generalized or multifocal epileptiforms in EEG...
  19. ncbi request reprint Focal magnetoencephalographic spikes in the superior temporal plane undetected by scalp EEG
    Masaki Iwasaki
    Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan
    J Clin Neurosci 10:236-8. 2003
    ..The tangential current orientation to the scalp may explain the different sensitivity of scalp EEG and MEG to rhythmic discharges. This study shows the unique sensitivity of MEG to epileptic activity in the superior temporal plane...
  20. pmc Fantastic confabulation in right frontal lobe epilepsy
    Mayu Fujikawa
    Department of Epileptology, Tohoku University Graduate School of Medicine, Sendai, Japan
    Epilepsy Behav Case Rep 6:55-7. 2016
    ..Interictal behavioral symptoms in frontal lobe epilepsy (FLE) are variable and often difficult to discriminate from other localization-related epilepsies...
  21. doi request reprint Obsessive-compulsive behavior induced by levetiracetam
    Mayu Fujikawa
    Department of Epileptology, Tohoku University School of Medicine, Sendai, Miyagi, Japan
    J Child Neurol 30:942-4. 2015
    ..This case provides clear evidence that levetiracetam may cause obsessive-compulsive behavior even in a pediatric epilepsy patient without psychiatric background, possibly mediated by modulation of the glutamate system by levetiracetam. ..
  22. ncbi request reprint Seizure freedom after lamotrigine rash: a peculiar phenomenon in epilepsy
    Yosuke Kakisaka
    Department of Epileptology, Tohoku University School of Medicine, Japan
    Intern Med 53:2521-2. 2014
    ..This adult case with a peculiar clinical course provides support for the hypothesis of immunomodulation process involvement in epilepsy, a phenomenon that was previously mainly seen in pediatric patients. ..
  23. ncbi request reprint Summary of 15 years experience of awake surgeries for neuroepithelial tumors in tohoku university
    Toshihiro Kumabe
    Department of Neurosurgery, Tohoku University Graduate School of Medicine, Kitasato, Minami Ku, Sagamihara, Japan
    Neurol Med Chir (Tokyo) 53:455-66. 2013
    ..Awake surgery may contribute to improve the outcome of gliomas near eloquent areas by maximizing the tumor resection and minimizing the surgical morbidity. ..
  24. ncbi request reprint [Surgical treatment of non-lesional supplementary motor area epilepsy: two case reports]
    Masaki Iwasaki
    Department of Neurosurgery, Kohnan Hospital, 4 20 1 Nagamachi minami, Taihaku ku, Sendai shi, Miyagi 982 8523, Japan
    No Shinkei Geka 37:293-8. 2009
    ..Recognition of the typical seizure semiology is very important in the correct diagnosis and surgical treatment of supplementary motor area epilepsy, especially in the absence of MR imaging lesions...
  25. pmc Verbal Dominant Memory Impairment and Low Risk for Post-operative Memory Worsening in Both Left and Right Temporal Lobe Epilepsy Associated with Hippocampal Sclerosis
    Amr Farid Khalil
    Department of Neurosurgery, Tohoku University Graduate School of Medicine
    Neurol Med Chir (Tokyo) 56:716-723. 2016
    ..In conclusion, Verb-D is most commonly observed in patients with both the Lt and Rt TLE associated with HS. Hippocampectomy can improve memory indices in such patients regardless of the side of surgery and the function impaired...
  26. pmc Optogenetically induced seizure and the longitudinal hippocampal network dynamics
    Shin Ichiro Osawa
    Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan
    PLoS ONE 8:e60928. 2013
    ..Bidirectional networks work hierarchically along the ST hippocampus in the genesis and termination of epileptic seizures...
  27. ncbi request reprint Surgical implications of neuromagnetic spike localization in temporal lobe epilepsy
    Masaki Iwasaki
    Department of Neurosurgery, Tohoku University Graduate School of Medicine, 1 1 Seiryo machi, Aoba ku, Sendai 980 8574, Japan
    Epilepsia 43:415-24. 2002
    ..To investigate the clinical usefulness of magnetoencephalography (MEG) as a guide to the surgical treatment of temporal lobe epilepsy (TLE)...
  28. ncbi request reprint New Application of Actuator-Driven Pulsed Water Jet for Spinal Cord Dissection: An Experimental Study in Pigs
    Toshiki Endo
    Department of Neurosurgery, Tohoku University, Sendai, Japan
    J Neurol Surg A Cent Eur Neurosurg . 2016
    ..Characteristics of this water jet may help surgeons achieve complete resection of intramedullary tumors along with preserving satisfactory postoperative neurologic functions...
  29. ncbi request reprint Predicting Tissue Breaking Strengths in the Epileptic Brain with T2 Relaxometry: Application of Pulsed Water Jet Dissection System for Epilepsy Surgery
    Yoko Takahashi
    Department of Neurosurgery, Tohoku University, Sendai, Japan
    J Neurol Surg A Cent Eur Neurosurg . 2016
    ..34) and 20 V (R2 = - 0.20). Conclusions T2 relaxometry may be useful to predict tissue breaking strength in the epileptic brain that allows safe application of the ADPJ system in epilepsy surgery...
  30. pmc A change in brain white matter after shunt surgery in idiopathic normal pressure hydrocephalus: a tract-based spatial statistics study
    Shigenori Kanno
    Department of Neurology, Southmiyagi Medical Center, 38 1, Aza nishi, Shibata, Miyagi, 989 1253, Japan
    Fluids Barriers CNS 14:1. 2017
    ..The aim of this study was to elucidate changes in cerebral white matter after shunt surgery in idiopathic normal pressure hydrocephalus (INPH) using diffusion tensor imaging (DTI)...
  31. pmc Magnetoencephalography in fronto-parietal opercular epilepsy
    Yosuke Kakisaka
    Epilepsy Center, Neurological Institute, Cleveland Clinic, Cleveland, OH 44195, USA
    Epilepsy Res 102:71-7. 2012
    ..To clarify the clinical and neurophysiological profiles of fronto-parietal opercular epilepsy in which epileptic spikes are detected with magnetoencephalography (MEG) but not with scalp electroencephalography (EEG)...
  32. ncbi request reprint Angiocentric glioma and surrounding cortical dysplasia manifesting as intractable frontal lobe epilepsy--case report
    Shihomi Takada
    Department of Neurosurgery, Kohnan Hospital, Sendai, Miyagi, Japan
    Neurol Med Chir (Tokyo) 51:522-6. 2011
    ..Careful pre-surgical evaluation for epilepsy is necessary to achieve better seizure outcome...
  33. ncbi request reprint Neurenteric cyst of the craniocervical junction in an infant
    Hiroyuki Sakata
    Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
    Neurol Med Chir (Tokyo) 48:86-9. 2008
    ..Neurenteric cyst should be considered in the differential diagnosis of intradural extramedullary cystic lesion located ventrally to the cord at the craniocervical junction in infants. Early surgical removal is recommended...