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Presurgical evaluation

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https://www.readbyqxmd.com/read/28518181/a-semi-automatic-algorithm-for-preliminary-assessment-of-labial-gingiva-and-alveolar-bone-thickness-of-maxillary-anterior-teeth
#1
Sheng-Hung Chen, Hsun-Liang Chan, Yongning Lu, Sim-Heng Ong, Hom-Lay Wang, Eng Hong Ko, Po-Chun Chang
PURPOSE: Soft and hard tissue volumes are critical for implant placement and long-term stability. Although the literature has adequately addressed tissue biotypes of Western populations, pertinent information about Asian populations is limited. This study aimed to evaluate the soft and hard tissue profiles of the maxillary anterior teeth of the Taiwanese population using a semi-automatic algorithm. MATERIALS AND METHODS: Cone beam computed tomography images of 11 adults with well-aligned maxillary anterior teeth were overlaid with those of cast models, based on the tooth crowns manually outlined by two independent observers...
May 18, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28516364/preserving-normal-facial-nerve-function-and-improving-hearing-outcome-in-large-vestibular-schwannomas-with-a-combined-approach-planned-subtotal-resection-followed-by-gamma-knife-radiosurgery
#2
Roy Thomas Daniel, Constantin Tuleasca, Mercy George, Etienne Pralong, Luis Schiappacasse, Michele Zeverino, Raphael Maire, Marc Levivier
OBJECTIVE: To perform planned subtotal resection followed by gamma knife surgery (GKRS) in a series of patients with large vestibular schwannoma (VS), aiming at an optimal functional outcome for facial and cochlear nerves. METHODS: Patient characteristics, surgical and dosimetric features, and outcome were collected prospectively at the time of treatment and during the follow-up. RESULTS: A consecutive series of 32 patients was treated between July 2010 and June 2016...
May 17, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28513506/surgical-difficulties-success-and-complication-rates-of-orthodontic-miniplate-anchorage-systems-experience-with-382-miniplates
#3
Y Findik, T Baykul, E Esenlik, M H Turkkahraman
PURPOSE: The aim of this study was to evaluate the complications and success rates of the miniplates using both maxilla and mandible for orthodontic anchorage in growing patients. MATERIALS AND METHODS: One hundred and fifty-five consecutive patients (range 8.7-13.8 years) with Class II and III malocclusion without congenital or acquired deformities were included in this study. A total of 382 titanium miniplates were placed by the same surgeon. All miniplates were inserted under local anesthesia...
May 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28510905/zoomed-mri-guided-by-combined-eeg-meg-source-analysis-a-multimodal-approach-for-optimizing-presurgical-epilepsy-work-up-and-its-application-in-a-multi-focal-epilepsy-patient-case-study
#4
Ü Aydin, S Rampp, A Wollbrink, H Kugel, J -H Cho, T R Knösche, C Grova, J Wellmer, C H Wolters
In recent years, the use of source analysis based on electroencephalography (EEG) and magnetoencephalography (MEG) has gained considerable attention in presurgical epilepsy diagnosis. However, in many cases the source analysis alone is not used to tailor surgery unless the findings are confirmed by lesions, such as, e.g., cortical malformations in MRI. For many patients, the histology of tissue resected from MRI negative epilepsy shows small lesions, which indicates the need for more sensitive MR sequences...
May 16, 2017: Brain Topography
https://www.readbyqxmd.com/read/28492341/implications-of-neurovascular-uncoupling-in-functional-magnetic-resonance-imaging-fmri-of-brain-tumors
#5
Rebecca W Pak, Darian H Hadjiabadi, Janaka Senarathna, Shruti Agarwal, Nitish V Thakor, Jay J Pillai, Arvind P Pathak
Functional magnetic resonance imaging (fMRI) serves as a critical tool for presurgical mapping of eloquent cortex and changes in neurological function in patients diagnosed with brain tumors. However, the blood-oxygen-level-dependent (BOLD) contrast mechanism underlying fMRI assumes that neurovascular coupling remains intact during brain tumor progression, and that measured changes in cerebral blood flow (CBF) are correlated with neuronal function. Recent preclinical and clinical studies have demonstrated that even low-grade brain tumors can exhibit neurovascular uncoupling (NVU), which can confound interpretation of fMRI data...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28491494/the-relationship-between-morphological-lesion-magnetic-source-imaging-and-intracranial-stereo-electroencephalography-in-focal-cortical-dysplasia
#6
Romain Bouet, François Mauguière, Sébastien Daligault, Jean Isnard, Marc Guenot, Olivier Bertrand, Julien Jung
Magnetoencephalography (MEG) is a useful non-invasive technique for presurgical evaluation of focal cortical dysplasia patients. We aimed at clarifying the precise spatial relationship between the spiking volume determined with MEG, the seizure onset zone and the lesional volume in patients with focal cortical dysplasia. We studied the spatial relationships between the MEG spiking volume determined with a recent analysis pipeline, the seizure-onset zone location determined with a quantitative index calculated from intracranial EEG signals ('Epileptogenicity Index') and the lesional volume delineated on brain MRI in 11 patients with Focal Cortical Dysplasia explored with Stereo-electroencephalography (SEEG)...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28490155/endoscopic-treatment-of-hypothalamic-hamartomas
#7
REVIEW
Kyu Won Shim, Eun Kyung Park, Dong-Seok Kim
Hypothalamic hamartoma (HH) is a benign indolent lesion despite the presentation of refractory epilepsy. Behavioral disturbances and endocrine problems are additional critical symptoms that arise along with HHs. Due to its nature of generating epileptiform discharge and spreading to cortical region, various management strategies have been proposed and combined. Surgical approaches with open craniotomy or endoscopy, stereotactic approaches with radiosurgery and gamma knife surgery or radiofrequency thermos-coagulation, and laser ablation have been introduced...
May 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/28488608/epilepsy-surgery-in-children
#8
REVIEW
Sita Jayalakshmi, Sudhindra Vooturi, Swapan Gupta, Manas Panigrahi
Approximately 60% of all patients with epilepsy suffer from focal epilepsy syndromes. In approximately 15% of these patients, the seizures are not adequately controlled with anticonvulsive drugs, and such patients are potential candidates for surgical treatment and majority are children. Epilepsy surgery in children, who have been carefully chosen, can result in either seizure freedom or a marked (>90%) reduction in seizures in approximately two-third of children with intractable seizures. In the multimodality presurgical evaluation approach, sufficient concordance should be established among various independent investigations, thus identifying the location and extent of the epileptogenic zone with a high degree of confidence...
May 2017: Neurology India
https://www.readbyqxmd.com/read/28482107/phasic-rem-transiently-approaches-wakefulness-in-the-human-cortex-a-single-pulse-electrical-stimulation-study
#9
Kiyohide Usami, Riki Matsumoto, Katsuya Kobayashi, Takefumi Hitomi, Masao Matsuhashi, Akihiro Shimotake, Takayuki Kikuchi, Kazumichi Yoshida, Takeharu Kunieda, Nobuhiro Mikuni, Susumu Miyamoto, Ryosuke Takahashi, Akio Ikeda
Study Objectives: To investigate the changes in cortical neural responses induced by external inputs during phasic rapid eye movement (REM) sleep. Methods: Single-pulse electrical stimulation (SPES) was directly applied to the human cortex during REM sleep through subdural electrodes, in seven patients who underwent invasive presurgical evaluation for intractable partial epilepsy. SPES was applied to parts of the cortex through the subdural electrodes, and induced cortical responses were recorded from adjacent and remote cortical areas...
May 8, 2017: Sleep
https://www.readbyqxmd.com/read/28480084/concomitant-central-giant-cell-granuloma-and-aneurysmal-bone-cyst-in-a-young-child
#10
Deepika Pai, Abhay Taranath Kamath, Adarsh Kudva, Monica Monica Charlotte Solomon, Saurabh Kumar, Prem Sasikumar
Although Central Giant Cell Granuloma (CGCG) is a benign tumor of the jaw and aneurysmal bone cyst seen in children, its aggressive behavior causes extensive loss of hard tissue requiring wide excision and extensive rehabilitation. We report a rare case of concomitant CGCG and aneurysmal bone cyst in a two-year-old male child, involving the coronoid and condylar process. Young age, large tumor, its aggressive nature, and future growth of orofacial region pose a significant challenge in the management of such conditions...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28473088/acr-appropriateness-criteria-%C3%A2-suspected-liver%C3%A2-metastases
#11
Harmeet Kaur, Nicole M Hindman, Waddah B Al-Refaie, Hina Arif-Tiwari, Brooks D Cash, Victoria Chernyak, James Farrell, Joseph R Grajo, Jeanne M Horowitz, Michelle M McNamara, Richard B Noto, Aliya Qayyum, Tasneem Lalani, Ihab R Kamel
Liver metastases are the most common malignant liver tumors. The accurate and early detection and characterization of liver lesions is the key to successful treatment strategies. Increasingly, surgical resection in combination with chemotherapy is effective in significantly improving survival if all metastases are successfully resected. MRI and multiphase CT are the primary imaging modalities in the assessment of liver metastasis, with the relative preference toward multiphase CT or MRI depending upon the clinical setting (ie, surveillance or presurgical planning)...
May 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28465983/role-of-echocardiograghy-in-treating-a-case-of-double-chamber-right-ventricle-with-delayed-presentation
#12
Ramachandra Barik
The clinical diagnosis of double chamber right ventricle (DCRV) is not straightforward. Clinical history, clinical examination, 12-lead electrocardiogram, chest X-ray, and Echocardiography (echo) contribute to morphological diagnosis. Cardiac catheterization is essential for hemodynamic evaluation. A thorough presurgical workup helps the cardiac surgeon to choose the appropriate surgical approach and timing of surgery in an individual case. We present a case of a DCRV who presented to us in the fifth decade of life...
January 2017: Journal of Cardiovascular Echography
https://www.readbyqxmd.com/read/28462182/evaluation-of-temporomandibular-disorders-before-and-after-orthognathic-surgery-therapeutic-considerations-on-a-sample-of-76-patients
#13
Carlo di Paolo, Giorgio Pompa, Paolo Arangio, Anna di Nunno, Stefano Di Carlo, Daniele Rosella, Piero Papi, Piero Cascone
OBJECTIVES: Temporomandibular disorders may be associated with dental and facial malformations. The aim of this study is to record the prevalence of TMDs in patients scheduled for orthognathic surgery, reporting the development of TMDs and symptoms during the entire period of the treatment, and demonstrating the benefits of a team effort on this population. MATERIALS AND METHODS: Assessment of temporomandibular status was performed using the RDC/TMD criteria at T0 (prior to orthodontic therapy), T1 (3 months after the surgery), and T2 post-therapeutic cycle (6 to 12 months postoperatively)...
March 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28442120/american-gastroenterological-association-institute-technical-review-on-the-role-of-elastography-in-chronic-liver-diseases
#14
Siddharth Singh, Andrew J Muir, Douglas T Dieterich, Yngve T Falck-Ytter
Chronic liver diseases (CLDs), due to chronic hepatitis C; hepatitis B; nonalcoholic fatty liver diseases (NAFLD); and alcoholic liver disease, are a leading cause of morbidity and mortality globally. Early identification of patients with cirrhosis at high risk of progression to liver-related complications may facilitate timely care and improve outcomes. With risks and misclassification associated with invasive tests, such as liver biopsy, noninvasive imaging modalities for liver fibrosis assessment have gained popularity...
May 2017: Gastroenterology
https://www.readbyqxmd.com/read/28441686/surgical-and-functional-outcomes-after-multilevel-cervical-fusion-for-degenerative-disc-disease-compared-with-fusion-for-radiculopathy-a-study-of-workers-compensation-population
#15
Mhamad Faour, Joshua T Anderson, Arnold R Haas, Rick Percy, Stephen T Woods, Uri M Ahn, Nicholas U Ahn
STUDY DESIGN: Retrospective cohort comparative study. OBJECTIVE: To evaluate presurgical and surgical factors that affect return to work (RTW) status after multilevel cervical fusion, and to compare outcomes after multilevel cervical fusion for degenerative disc disease (DDD) versus radiculopathy. SUMMARY OF BACKGROUND DATA: Cervical fusion provides more than 90% of symptomatic relief for radiculopathy and myelopathy. However, cervical fusion for DDD without radiculopathy is considered controversial...
May 1, 2017: Spine
https://www.readbyqxmd.com/read/28428738/improved-localization-of-seizure-onset-zones-using-spatiotemporal-constraints-and-time-varying-source-connectivity
#16
Juan D Martinez-Vargas, Gregor Strobbe, Kristl Vonck, Pieter van Mierlo, German Castellanos-Dominguez
Presurgical evaluation of brain neural activity is commonly carried out in refractory epilepsy patients to delineate as accurately as possible the seizure onset zone (SOZ) before epilepsy surgery. In practice, any subjective interpretation of electroencephalographic (EEG) recordings is hindered mainly because of the highly stochastic behavior of the epileptic activity. We propose a new method for dynamic source connectivity analysis that aims to accurately localize the seizure onset zones by explicitly including temporal, spectral, and spatial information of the brain neural activity extracted from EEG recordings...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28427025/psychiatric-symptoms-after-temporal-epilepsy-surgery-a-one-year-follow-up-study
#17
Carmen Iranzo-Tatay, Teresa Rubio-Granero, Antonio Gutierrez, Mercedes Garcés, Rebeca Conde, Asier Gómez-Ibáñez, Sergio Arques-Egea, Lucia Sancho-Miñana, David Hervas-Marín, Vicente Villanueva
Psychiatric symptoms must be considered in patients with refractory temporal lobe epilepsy after epilepsy surgery. The main objectives of our study were to describe clinical and socio-demographical characteristics of a cohort of patients with pharmacoresistant temporal lobe epilepsy who underwent temporal lobe epilepsy surgery, and moreover, to evaluate possible risk factors for developing psychiatric symptoms. In order to achieve those goals, we conducted a prospective evaluation of psychopathology throughout the first year after surgery in a clinical sample of 72 patients, by means of three clinical rated measures; the Hamilton Anxiety Rating Scale (HARS), the Hamilton Depression Rating Scale (HDRS), and the Brief Psychiatric Rating Scale (BPRS)...
May 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28416097/long-term-effect-of-presurgical-nasoalveolar-molding-on-growth-of-maxillary-arch-in-unilateral-cleft-lip-and-palate-randomized-controlled-trial
#18
V Shetty, R K Agrawal, H F Sailer
The objective of this study was to investigate the long-term effect of presurgical nasoalveolar molding (PNAM) on growth of the maxillary arch through early childhood until 6 years of age in complete unilateral cleft lip and palate (UCLP) patients presenting for PNAM at different ages. Complete UCLP patients who were treated at our centre were divided into two groups. The study group underwent PNAM and was further subdivided into three subgroups (PNAM initiated within 1 month, between 1 and 6 months, and between 6 and 12 months of age in subgroup I, II, and III, respectively)...
April 13, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28410464/surgical-outcomes-in-two-different-age-groups-with-focal-cortical-dysplasia-type-ii-any-real-difference
#19
Jorge Luis Ramírez-Molina, Roberta Di Giacomo, Valeria Mariani, Francesco Deleo, Francesco Cardinale, Angélica María Uscátegui-Daccarett, Pablo Lorenzana, Laura Tassi
OBJECTIVE: Focal Cortical Dysplasias (FCDs) represent a common architectural cortical disorder underlying drug-resistant focal epilepsy. So far, studies aimed at evaluating whether age at surgery is a factor influencing surgical outcome are lacking, so that data on the comparison between patients harboring Type II FCD operated at younger age and those operated at adult age are still scarce. We compared presurgical clinical features and surgical outcomes of patients with histopathologically diagnosed Type II FCD undergoing surgery at an earlier age with those operated after 20 years of age...
May 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28398008/source-localization-of-ictal-epileptic-activity-based-on-high-density-scalp-eeg-data
#20
Petros Nemtsas, Gwenael Birot, Francesca Pittau, Christoph M Michel, Karl Schaller, Serge Vulliemoz, Vasilios K Kimiskidis, Margitta Seeck
OBJECTIVE: Electrical source imaging (ESI) is a well-established approach to localizing the epileptic focus in drug-resistant focal epilepsy. So far, ESI has been used primarily on interictal events. Emerging evidence suggests that ictal ESI is also feasible and potentially useful. We aimed to investigate the diagnostic accuracy of ESI on ictal events using high-density electroencephalography (EEG). METHODS: We performed ictal ESI on 14 patients (9 with temporal lobe epilepsy) admitted for presurgical evaluation who presented seizures during a long-term (≥18 h) high-density EEG recording (13 with 256 electrodes and one with 128 electrodes), and subsequently 8 of them underwent epilepsy surgery (postoperative follow-up >1 year)...
April 11, 2017: Epilepsia
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