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https://www.readbyqxmd.com/read/28319431/evaluation-of-the-risk-factors-for-a-rotator-cuff-retear-after-repair-surgery
#1
Yeong Seok Lee, Jeung Yeol Jeong, Chan-Deok Park, Seung Gyoon Kang, Jae Chul Yoo
BACKGROUND: A retear is a significant clinical problem after rotator cuff repair. However, no study has evaluated the retear rate with regard to the extent of footprint coverage. PURPOSE: To evaluate the preoperative and intraoperative factors for a retear after rotator cuff repair, and to confirm the relationship with the extent of footprint coverage. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Data were retrospectively collected from 693 patients who underwent arthroscopic rotator cuff repair between January 2006 and December 2014...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28306691/predictive-value-of-electrocorticography-in-patients-with-mesial-temporal-lobe-epilepsy-undergoing-selective-amygdalohippocampectomy
#2
Aline Herlopian, Bashir Shihabuddin
PURPOSE: The utility of intraoperative electrocorticography has been reported in predicting seizure outcome in patients with mesial temporal lobe epilepsy due to mesial temporal sclerosis (MTS) undergoing standard temporal lobectomy. Three studies reported the predictive outcome in patients with MTS undergoing selective amygdalohippocampectomy (sAHE). We evaluate the predictive value of the intraoperative electrocorticography in postoperative outcome in patients with mesial temporal lobe epilepsy secondary to MTS undergoing sAHE...
March 16, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28306418/an-mrs-and-pet-guided-biopsy-tool-for-intraoperative-neuronavigational-systems
#3
Matthew Grech-Sollars, Babar Vaqas, Gerard Thompson, Tara Barwick, Lesley Honeyfield, Kevin O'Neill, Adam D Waldman
OBJECTIVE Glioma heterogeneity and the limitations of conventional structural MRI for identifying aggressive tumor components can limit the reliability of stereotactic biopsy and, hence, tumor characterization, which is a hurdle for developing and selecting effective treatment strategies. In vivo MR spectroscopy (MRS) and PET enable noninvasive imaging of cellular metabolism relevant to proliferation and can detect regions of more highly active tumor. Here, the authors integrated presurgical PET and MRS with intraoperative neuronavigation to guide surgical biopsy and tumor sampling of brain gliomas with the aim of improving intraoperative tumor-tissue characterization and imaging biomarker validation...
March 17, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28304232/a-systematic-evaluation-of-intraoperative-white-matter-tract-shift-in-pediatric-epilepsy-surgery-using-high-field-mri-and-probabilistic-high-angular-resolution-diffusion-imaging-tractography
#4
Joseph Yuan-Mou Yang, Richard Beare, Marc L Seal, A Simon Harvey, Vicki A Anderson, Wirginia J Maixner
OBJECTIVE Characterization of intraoperative white matter tract (WMT) shift has the potential to compensate for neuronavigation inaccuracies using preoperative brain imaging. This study aimed to quantify and characterize intraoperative WMT shift from the global hemispheric to the regional tract-based scale and to investigate the impact of intraoperative factors (IOFs). METHODS High angular resolution diffusion imaging (HARDI) diffusion-weighted data were acquired over 5 consecutive perioperative time points (MR1 to MR5) in 16 epilepsy patients (8 male; mean age 9...
March 17, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28304220/high-resolution-magnetic-resonance-imaging-of-carotid-atherosclerotic-plaques-a-correlation-study-with-histopathology
#5
Zhangyong Xia, Hua Yang, Xiaochun Yuan, Jiyue Wang, Shigang Zhang, Liyong Zhang, Yang Qu, Jun Chen, Liqun Jiao, Le-Xin Wang, Yifeng Du
BACKGROUND: This study aimed to utilize high-resolution magnetic resonance imaging (MRI) to investigate the characteristics of stable and vulnerable carotid arteriosclerotic plaques, with correlations to histopathological findings. PATIENTS AND METHODS: High-resolution MRI was performed in 817 patients, using three-dimensional magnetic resonance angiography. Plaque composition was evaluated by measuring the areas occupied by calcification, a lipid-rich necrotic core, intra-plaque haemorrhage, and fibrous cap rupture...
March 17, 2017: VASA. Zeitschrift Für Gefässkrankheiten
https://www.readbyqxmd.com/read/28303206/post-irradiation-lumbosacral-radiculopathy-associated-with-multiple-cavernous-malformations-of-the-cauda-equina-case-report-and-review-of-the-literature
#6
Doniel Drazin, Ari Kappel, Stefan Withrow, Tiffany Perry, Ray Chu, Surasak Phuphanich
BACKGROUND: Multiple radiation-induced cavernous malformations of the cauda equina are extremely rare. A review of the literature suggested that the post-irradiation lumbosacral radiculopathy in our patient was most likely associated with a diagnosis of multiple radiation-induced cavernous malformations of the cauda equina. CASE DESCRIPTION: A 76-year-old man with a remote history of abdominal radiation therapy presented with a 6-month history of progressively worsening right foot drop and balance impairment...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28302660/rhabdomyolysis-induced-compartment-syndrome-secondary-to-atorvastatin-and-strenuous-exercise
#7
Louise Dunphy, Rossel Morhij, Sarah Tucker
A 50-year-old male UK resident with a history of hypertension and hypercholesterolaemia presented to the emergency department with a 48-hour history of sudden onset bilateral thigh swelling and pain unrelieved by regular analgesia. 3 days prior to presentation, he performed a vigorous workout in the gym. His medications included ramipril 5 mg once daily and atorvastatin 20 mg at night time. He was a non-smoker and did not consume alcohol. He reported no known drug allergies. Physical examination confirmed bilateral swollen thighs, with no overlying skin changes, clinically suggestive of compartment syndrome...
March 16, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28302428/comparison-of-intraoperative-fluoroscopic-dunn-view-with-magnetic-resonance-imaging-to-determine-femoral-version
#8
Cara Beth Lee, Hillard T Spencer
PURPOSE: To compare femoral version measured with a fluoroscopic Dunn view taken at the time of hip arthroscopy with values derived from axial magnetic resonance imaging (MRI) scans. METHODS: Of 159 hip arthroscopies performed from January 2014 through March 2015, 50 patients had magnetic resonance imaging (MRI) scans with a protocol that incorporates femoral version analysis. Dunn views are performed as a routine part of the preoperative fluoroscopic examination at the time of arthroscopy...
March 13, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28297573/magnetic-resonance-imaging-guided-delivery-of-neural-stem-cells-into-the-basal-ganglia-of-nonhuman-primates-reveals-a-pulsatile-mode-of-cell-dispersion
#9
Kristen E Malloy, Jinqi Li, Gourav R Choudhury, April Torres, Shruti Gupta, Chris Kantorak, Tim Goble, Peter T Fox, Geoffrey D Clarke, Marcel M Daadi
Optimal stem cell delivery procedures are critical to the success of the cell therapy approach. Variables such as flow rate, suspension solution, needle diameter, cell density, and tissue mechanics affect tissue penetration, backflow along the needle, and the dispersion and survival of injected cells during delivery. Most cell transplantation centers engaged in human clinical trials use custom-designed cannula needles, syringes, or catheters, sometimes precluding the use of magnetic resonance imaging (MRI)-guided delivery to target tissue...
March 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28295903/feasibility-of-intraoperative-breast-mri-and-the-role-of-prone-versus-supine-positioning-in-surgical-planning-for-breast-conserving-surgery
#10
Melissa A Mallory, Yasuaki Sagara, Fatih Aydogan, Stephen DeSantis, Jagadeesan Jayender, Diana Caragacianu, Eva Gombos, Kirby G Vosburgh, Ferenc A Jolesz, Mehra Golshan
We assessed the feasibility of supine intraoperative MRI (iMRI) during breast-conserving surgery (BCS), enrolling 15 patients in our phase I trial between 2012 and 2014. Patients received diagnostic prone MRI, BCS, pre-excisional supine iMRI, and postexcisional supine iMRI. Feasibility was assessed based on safety, sterility, duration, and image-quality. Twelve patients completed the study; mean duration = 114 minutes; all images were adequate; no complications, safety, or sterility issues were encountered...
March 10, 2017: Breast Journal
https://www.readbyqxmd.com/read/28295679/guiding-brain-tumor-surgery-via-blood-brain-barrier-permeable-gold-nanoprobes-with-acid-triggered-mri-serrs-signals
#11
Xihui Gao, Qi Yue, Zining Liu, Mengjing Ke, Xingyu Zhou, Sihan Li, Jianping Zhang, Ren Zhang, Liang Chen, Ying Mao, Cong Li
Surgical resection is a mainstay in the treatment of malignant brain tumors. Surgeons, however, face great challenges in distinguishing tumor margins due to their infiltrated nature. Here, a pair of gold nanoprobes that enter a brain tumor by crossing the blood-brain barrier is developed. The acidic tumor environment triggers their assembly with the concomitant activation of both magnetic resonance (MR) and surface-enhanced resonance Raman spectroscopy (SERRS) signals. While the bulky aggregates continuously trap into the tumor interstitium, the intact nanoprobes in normal brain tissue can be transported back into the blood stream in a timely manner...
March 15, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28291925/improved-prostate-delineation-in-prostate-hdr-brachytherapy-with-trus-ct-deformable-registration-technology-a-pilot-study-with-mri-validation
#12
Xiaofeng Yang, Peter J Rossi, Ashesh B Jani, Hui Mao, Zhengyang Zhou, Walter J Curran, Tian Liu
Accurate prostate delineation is essential to ensure proper target coverage and normal-tissue sparing in prostate HDR brachytherapy. We have developed a prostate HDR brachytherapy technology that integrates intraoperative TRUS-based prostate contour into HDR treatment planning through TRUS-CT deformable registration (TCDR) to improve prostate contour accuracy. In a perspective study of 16 patients, we investigated the clinical feasibility as well as the performance of this TCDR-based HDR approach. We compared the performance of the TCDR-based approach with the conventional CT-based HDR in terms of prostate contour accuracy using MRI as the gold standard...
January 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28291212/-surgical-treatment-of-eloquent-brain-area-tumors-using-neurophysiological-mapping-of-the-speech-and-motor-areas-and-conduction-tracts
#13
A A Zuev, E N Korotchenko, D S Ivanova, N V Pedyash, B A Teplykh
AIM: To evaluate the efficacy of intraoperative neurophysiological mapping in removing eloquent brain area tumors (EBATs). MATERIAL AND METHODS: Sixty five EBAT patients underwent surgical treatment using intraoperative neurophysiological mapping at the Pirogov National Medical and Surgical Center in the period from 2014 to 2015. On primary neurological examination, 46 (71%) patients were detected with motor deficits of varying severity. Speech disorders were diagnosed in 17 (26%) patients...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28289891/selective-laminectomy-for-cervical-spondylotic-myelopathy-a-comparative-analysis-with-laminoplasty-technique
#14
Han Chang, Choll Kim, Byung-Wan Choi
INTRODUCTION: The purpose of this study was to evaluate the effectiveness of selective laminectomy compared with laminoplasty for patients with multilevel cervical spondylotic myelopathy (CSM) by evaluating the radiological and clinical outcomes. METHODS: We retrospectively reviewed 67 patients with who underwent posterior laminectomy (LN) or laminoplasty (LP). LN was performed in 32 cases and LP in 35 cases. Radiologically, we evaluated the neutral C2-7 Cobb angle and range of motion (ROM) preoperatively and at final follow-up...
March 13, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28286276/the-value-of-intraoperative-mri-in-endoscopic-and-microsurgical-transsphenoidal-pituitary-adenoma-resection
#15
Andrej Paľa, Andreas Knoll, Christine Brand, Gwendolin Etzrodt-Walter, Jan Coburger, Christian Rainer Wirtz, Michal Hlaváč
INTRODUCTION: The routine use of iMRI helps to achieve gross total resection in transsphenoidal pituitary surgery. We have compared the added value of iMRI for extent of resection in endoscopic versus microsurgical transsphenoidal adenomectomy. METHODS: A total of 96 patients with pituitary adenoma were included. 28 consecutive patients underwent endoscopic transsphenoidal tumor resection. For comparison, we used a historic cohort of 68 consecutive patients treated microsurgically...
March 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28281739/cerebral-micro-embolization-during-pulmonary-vein-isolation-relation-to-post-ablation-silent-cerebral-ischemia
#16
Edina Nagy-Baló, Mihran Martirosyan, Gábor Sándorfi, Orsolya Hajas, Levente Lánczi, Ervin Berényi, Lilla Ladányi, Alexandra Kiss, István Édes, Zoltán Csanádi
BACKGROUND: High incidences of silent cerebral ischemia (SCI) have been revealed by diffusion-weighted magnetic resonance imaging (DW MRI) after pulmonary vein isolation (PVI) for atrial fibrillation. A high number of mostly gaseous micro-embolic signals (MESs) was detected by transcranial Doppler (TCD) during PVI. In this investigation the possible relationship between MESs detected intraoperatively by TCD and new SCI on DW MRI post-ablation is reported. METHODS: 27 consecutive atrial fibrillation patients (6 female, age median: 64 interquartile range: 13...
March 10, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/28279512/intracranial-video-eeg-monitoring-in-presurgical-evaluation-of-patients-with-refractory-epilepsy
#17
Marlena Hupalo, Rafal Wojcik, Dariusz J Jaskolski
OBJECTIVE: Reviewing our experience in intracranial video-EEG monitoring in the presurgical evaluation of patients with refractory epilepsy. METHODS: We report on 62 out of 202 (31%) patients with refractory epilepsy, who underwent a long term video-EEG monitoring (LTM). The epileptogenic zone (EZ) was localised either based on the results of LTM or after intracranial EEG recordings from depth, subdural or foramen ovale electrodes. The decision on the location of the electrodes was based upon semiology of the seizures, EEG findings and the lesions visualised in MRI brain scan...
March 2, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28275819/serial-clinical-and-mri-examinations-after-arthroscopic-rotator-cuff-reconstruction-using-double-row-technique
#18
F Pfalzer, J Huth, E Stürmer, D Endele, B Kniesel, F Mauch
PURPOSE: Rotator cuff reconstruction using arthroscopic double-row technique enables a better repair of the anatomical footprint at the tendon insertion. Objective of this serial study was to illustrate structural and functional results during recovery following double-row reconstruction. METHODS: Forty-five patients with mid-sized ruptures of the supraspinatus tendon were assessed prospectively and underwent arthroscopic surgery using the double-row technique. Rupture localization, size, form, and extent of retraction were recorded intraoperatively...
March 9, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28272715/could-mri-visualize-the-invisible-an-italian-single-center-study-comparing-magnetic-resonance-lymphography-mrl-super-microsurgery-and-histology-in-the-identification-of-lymphatic-vessels
#19
P Gennaro, A Borghini, G Chisci, F G Mazzei, E Weber, E Tedone Clemente, S Guerrini, F Gentili, G Gabriele, C Ungari, M A Mazzei
OBJECTIVE: Aim of this study is to evaluate the possibility of limb magnetic resonance lymphography (MRL) to differentiate lymphatic vessels from pathological veins, collect a specimen of the identified lymphatic vessel during operations of super microsurgical lymphatic-venular anastomosis (s-LVA) and perform immunohistochemical stainings to confirm the nature of the collected vessels. PATIENTS AND METHODS: Twenty patients presenting lymphedema were enrolled in this study...
February 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28269160/a-method-to-project-clinical-outcome-topographies-onto-preoperative-mri-to-guide-direct-dbs-targeting
#20
Mahesh B Shenai, Barton L Guthrie
The use of intraoperative MR and direct DBS targeting, relies on anatomical rather than functional data. Historical clinical outcome databases that have recorded stimulation location and magnitude of effect, can provide a useful adjunct in DBS targeting strategies. We present a method for generating clinical outcome topographies, and merging regions of effect onto a pre-operative MR, for surgical planning. The clinical outcome topographies are consistent with more intuitive strategies used by neurosurgeons...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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