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https://www.readbyqxmd.com/read/28647400/intraoperative-registered-ultrasound-and-fluoroscopy-iruf-for-dose-calculation-during-prostate-brachytherapy-improved-accuracy-compared-to-standard-ultrasound-based-dosimetry
#1
Junghoon Lee, Omar Y Mian, Yi Le, Hee Joon Bae, E Clif Burdette, Theodore L DeWeese, Jerry L Prince, Daniel Y Song
BACKGROUND AND PURPOSE: Intraoperative transrectal ultrasound dosimetry during low-dose-rate prostate brachytherapy is imprecise due to sonographic distortion caused by seed echoes and needle tracks that obscure seed positions or create false signals as well as traumatic edema. Here we report the results of a pilot study comparing a combined ultrasound and fluoroscopy-based seed localization method (iRUF) to standard ultrasound-based dosimetry (USD). MATERIAL AND METHODS: Eighty patients undergoing permanent Pd-103 seed implantation for prostate cancer were prospectively enrolled...
June 21, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28645214/sodium-fluorescein-facilitates-guided-sampling-of-diagnostic-tumor-tissue-in-nonenhancing-gliomas
#2
Stephen G Bowden, Justin A Neira, Brian J A Gill, Timothy H Ung, Zachary K Englander, George Zanazzi, Peter D Chang, Jorge Samanamud, Jack Grinband, Sameer A Sheth, Guy M McKhann, Michael B Sisti, Peter Canoll, Randy S D'Amico, Jeffrey N Bruce
BACKGROUND: Accurate tissue sampling in nonenhancing (NE) gliomas is a unique surgical challenge due to their intratumoral histological heterogeneity and absence of contrast enhancement as a guide for intraoperative stereotactic guidance. Instead, T2/fluid-attenuated inversion-recovery (FLAIR) hyperintensity on MRI is commonly used as an imaging surrogate for pathological tissue, but sampling from this region can yield nondiagnostic or underdiagnostic brain tissue. Sodium fluorescein is an intraoperative fluorescent dye that has a high predictive value for tumor identification in areas of contrast enhancement and NE in glioblastomas...
June 21, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28644979/intraoperative-fast-ripples-independently-predict-postsurgical-epilepsy-outcome-comparison-with-other-electrocorticographic-phenomena
#3
Shaun A Hussain, Gary W Mathern, Phoebe Hung, Julius Weng, Raman Sankar, Joyce Y Wu
In the surgical management of epilepsy, the resection of cortex exhibiting interictal fast ripples (250-500Hz) on electrocorticography has been linked to postoperative seizure-freedom. Although fast ripples appear to accurately identify the epileptogenic zone-the minimum tissue that must be removed at surgery to achieve seizure-freedom-it has not been established that fast ripples are a superior biomarker in comparison with multimodal presurgical neuroimaging and other electrocorticography abnormalities. Hence, in the prediction of postoperative seizure-freedom, we compared the value of fast ripples with other intraoperative electocorticography abnormalities including focal slowing, paroxysmal fast activity, intermittent spike discharges, continuous epileptiform discharges, focal attenuation, and intraoperative seizures, as well as complete resection of the lesion defined by MRI and other neuroimaging...
June 16, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28644103/prognostic-significance-of-intraoperative-change-in-the-fractional-anisotropy-and-the-volume-of-the-optic-chiasma-during-resection-of-suprasellar-tumors
#4
Hussam Metwali, Mario Giordano, Katja Kniese, Rudolf Fahlbusch
OBJECTIVE The aim of this study was to test the prognostic significance of intraoperative changes in the fractional anisotropy (FA) and the volume of the optic chiasma and their correlation with visual outcome. METHODS Twenty-eight sequential patients with suprasellar tumors presenting with chiasma compression syndrome were surgically treated under intraoperative MRI control between March 2014 and July 2016. The FA and the volume of the optic chiasma were measured immediately before and immediately after tumor resection...
June 23, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28644069/concomitant-idiopathic-hypertrophic-spinal-pachymeningitis-and-guillain-barr%C3%A3-syndrome-in-a-patient-coincidence-or-a-triggering-mechanism
#5
Farouk Olubajo, Tatyana Yermakova, J Robin Highley, Vasileios Arzoglou
Idiopathic hypertrophic spinal pachymeningitis (IHSP), a rare diffuse inflammatory thickening of the dura mater, and Guillain-Barré syndrome (GBS) are known entities but they have never been reported as concomitant diagnoses. To their knowledge, the authors present the first reported case in the international literature with supportive evidence for both IHSP (based on MRI, intraoperative, and histological findings) and GBS (based on history, clinical examination, and electrophysiological findings). They review the literature on IHSP and the diagnostic criteria for GBS, with the view of identifying a possible causative connection...
June 23, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28634783/the-treatment-for-the-first-branchial-cleft-anomalies-in-children
#6
Wei Liu, Min Chen, Jinsheng Hao, Yang Yang, Jie Zhang, Xin Ni
The objective of this study is to make a clinical analysis for first branchial cleft anomalies (FBCAs), especially introduce the relationship between the Type I/II FBCA with the facial nerve and to demonstrate the importance of using intraoperative microscope and facial nerve monitoring. This is a retrospective review of patients with FBCAs treated in Beijing Children's Hospital, from Jan 2013 to Dec 2015. Clinical data of patients, including sex, age, chief complains, history of surgery, incision and drainage, the relationship with the facial nerve, pre and post-operative facial paralysis, recurrent rate and complications were recorded...
June 20, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28631161/the-role-of-eabr-with-intracochlear-test-electrode-in-decision-making-between-cochlear-and-brainstem-implants-preliminary-results
#7
Betul Cicek Cinar, Mehmet Yarali, Gamze Atay, Munir Demir Bajin, Gonca Sennaroglu, Levent Sennaroglu
The objective of the study was to discuss the findings of intraoperative electrically evoked auditory brainstem response (eABR) test results with a recently designed intracochlear test electrode (ITE) in terms of their relation to decisions of cochlear or auditory brainstem implantation. This clinical study was conducted in Hacettepe University, Department of Otolaryngology, Head and Neck Surgery and Department of Audiology. Subjects were selected from inner ear malformation (IEM) database. Eleven subjects with profound sensorineural hearing loss were included in the current study with age range from 1 year 3 months to 4 years 3 months for children with prelingual hearing loss...
June 19, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28624561/safety-utility-and-clinical-results-of-continuous-intraoperative-electrophysiological-monitoring-in-1-5t-imri-guided-surgery
#8
Martin Breitkopf, Sotirios Bisdas, Marina Liebsch, Felix Behling, Benjamin Bender, Marcos Tatagiba, Constantin Roder
OBJECTIVE: To show that the combined use of intraoperative high-field MRI (iMRI) and electrophysiological monitoring (IOM) is feasible, safe and beneficial for patients. METHODS: The setup, surgical, imaging and clinical results of 110 patients with eloquent intracranial lesions with the combined use of 1.5T iMRI and IOM were analyzed. RESULTS: 187 iMRI scans were performed with IOM needles in place, resulting in a total experience of using more than 4000 electrodes in the iMRI...
June 14, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28624558/safety-and-feasibility-of-electrochemotherapy-in-patients-with-unresectable-colorectal-liver-metastases-a-pilot-study
#9
Laura Coletti, Valentina Battaglia, Paolo De Simone, Laura Turturici, Carlo Bartolozzi, Franco Filipponi
BACKGROUND AND OBJECTIVES: Electrochemotherapy is a novel ablation technique combining chemotherapeutic agents with reversible cell membrane electroporation. Previous experiences have shown its efficacy for cutaneous tumors. Its application for deep-seated malignancies is under investigation. We performed a prospective, pilot study to evaluate the feasibility, safety, and efficacy of intraoperative electrochemotherapy for otherwise unresectable colorectal liver metastases. METHODS: Electrochemotherapy with bleomycin was combined with open liver resection and performed with linear or hexagonal needle electrodes according to an individualized pretreatment plan...
June 15, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28623409/evaluation-of-bone-viability-in-patients-after-girdlestone-arthroplasty-comparison-of-bone-spect-ct-and-mri
#10
G Diederichs, P Hoppe, F Collettini, G Wassilew, B Hamm, W Brenner, M R Makowski
PURPOSE: To test the diagnostic performance of bone SPECT/CT and MRI for the evaluation of bone viability in patients after girdlestone-arthroplasty with histopathology used as gold standard. MATERIALS AND METHODS: In this cross-sectional study, patients after girdlestone-arthroplasty were imaged with single-photon-emission-computed-tomography/computed-tomography (SPECT/CT) bone-scans using 99mTc-DPD. Additionally, 1.5 T MRI was performed with turbo-inversion-recovery-magnitude (TIRM), contrast-enhanced T1-fat sat (FS) and T1-mapping...
June 16, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28620349/localization-of-deep-brain-stimulation-contacts-using-corticospinal-corticobulbar-tracts-stimulation
#11
Julien F Bally, Maria-Isabel Vargas, Judit Horvath, Vanessa Fleury, Pierre Burkhard, Shahan Momjian, Pierre Pollak, Colette Boex
BACKGROUND: Successful deep brain stimulation (DBS) in Parkinson's disease (PD) requires optimal electrode placement. One technique of intraoperative electrode testing is determination of stimulation thresholds inducing corticospinal/corticobulbar tracts (CSBT) motor contractions. OBJECTIVE: This study aims to analyze correlations between DBS electrode distance to CSBT and contraction thresholds, with either visual or electromyography (EMG) detection, to establish an intraoperative tool devoted to ensure safe distance of the electrode to the CSBT...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28616638/piriformis-muscle-syndrome-with-assessment-of-sciatic-nerve-using-diffusion-tensor-imaging-and-tractography-a-case-report
#12
Keizo Wada, Tomohiro Goto, Tomoya Takasago, Daisuke Hamada, Koichi Sairyo
Piriformis muscle syndrome (PMS) is difficult to diagnose by objective evaluation of sciatic nerve injury. Here we report a case of PMS diagnosed by diffusion tensor imaging (DTI) and tractography of the sciatic nerve, which can assess and visualize the extent of nerve injury. The patient was a 53-year-old man with a 2-year history of continuous pain and numbness in the left leg. His symptoms worsened when sitting. Physical examination, including sensorimotor neurologic tests, the deep tendon reflex test, and the straight leg raise test, revealed no specific findings...
June 14, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28614824/compact-intraoperative-mri-stereotactic-accuracy-and-future-directions
#13
Daniel Markowitz, Dishen Lin, Sussan Salas, Nina Kohn, Michael Schulder
BACKGROUND: Intraoperative imaging must supply data that can be used for accurate stereotactic navigation. This information should be at least as accurate as that acquired from diagnostic imagers. OBJECTIVES: The aim of this study was to compare the stereotactic accuracy of an updated compact intraoperative MRI (iMRI) device based on a 0.15-T magnet to standard surgical navigation on a 1.5-T diagnostic scan MRI and to navigation with an earlier model of the same system...
June 15, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28607048/intraoperative-assessment-of-tumor-margins-during-glioma-resection-by-desorption-electrospray-ionization-mass-spectrometry
#14
Valentina Pirro, Clint M Alfaro, Alan K Jarmusch, Eyas M Hattab, Aaron A Cohen-Gadol, R Graham Cooks
Intraoperative desorption electrospray ionization-mass spectrometry (DESI-MS) is used to characterize tissue smears by comparison with a library of DESI mass spectra of pathologically determined tissue types. Measurements are performed in the operating room within 3 min. These mass spectra provide direct information on tumor infiltration into white or gray brain matter based on N-acetylaspartate (NAA) and on membrane-derived complex lipids. The mass spectra also indicate the isocitrate dehydrogenase mutation status of the tumor via detection of 2-hydroxyglutarate, currently assessed postoperatively on biopsied tissue using immunohistochemistry...
June 12, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28604382/surgical-treatment-of-gastric-stromal-tumors-laparoscopic-versus-open-approach
#15
Monica Ortenzi, Roberto Ghiselli, Luca Cardinali, Mario Guerrieri
AIM: Gastrointestinal stromal tumors (GIST) are quite rare tumors, but yet they are the most common mesenchymal lesions of gastrointestinal tract. Their outmost frequent origin site is stomach and presently surgical resection is the mainstay in the treatment of gastric non metastatic GIST. Their peculiar characteristic of growth and poor metastatic tendency make this tumors particularly prone to be managed by minimally invasive technique. Presenting our experience we want show the feasibility and safeness of laparoscopic approach for gastric GIST and its benefits versus traditional open surgery and pointing out short term and long terms outcomes...
2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/28601874/accuracy-of-intraoperative-computed-tomography-during-deep-brain-stimulation-procedures-comparison-with-postoperative-magnetic-resonance-imaging
#16
Maarten Bot, Pepijn van den Munckhof, Roy Bakay, Glenn Stebbins, Leo Verhagen Metman
OBJECTIVE: To determine the accuracy of intraoperative computed tomography (iCT) in localizing deep brain stimulation (DBS) electrodes by comparing this modality with postoperative magnetic resonance imaging (MRI). BACKGROUND: Optimal lead placement is a critical factor for the outcome of DBS procedures and preferably confirmed during surgery. iCT offers 3-dimensional verification of both microelectrode and lead location during DBS surgery. However, accurate electrode representation on iCT has not been extensively studied...
June 10, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28598835/efficacy-of-contrast-enhanced-ultrasound-for-immediate-assessment-of-ablation-status-after-intraoperative-radiofrequency-ablation-of-hepatic-malignancies
#17
N Platz Batista da Silva, L P Beyer, M C Hottenrott, C Hackl, H J Schlitt, C Stroszczynski, P Wiggermann, E M Jung
AIM: To evaluate the Efficacy of intraoperative contrast enhanced ultrasound (Io-CEUS) for assessment of radiofrequency ablation (RFA) during liver tumor surgery. MATERIAL AND METHODS: Retrospective analyis was performed on 18 patients who underwent combined liver tumor surgery and RFA of 27 hepatic tumors between 02/2011 and 12/2016. Io-CEUS was performed by bolus injections of up to 10 ml sulphur hexaflourid microbubbles for diagnostic purposes. To guide the RFA up to 20 ml microbubbles were applied to monitor the procedure and assess the ablation status finally...
June 3, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28597000/intraoperative-ultrasound-as-a-screening-modality-for-the-detection-of-liver-metastases-during-resection-of-primary-colorectal-cancer-a-systematic-review
#18
REVIEW
Signe Bremholm Ellebæk, Claus Wilki Fristrup, Michael Bau Mortensen
Colorectal cancer (CRC) is one of the most common cancer diseases worldwide. One in 4 patients with CRC will have a disseminated disease at the time of diagnosis and often in the form of synchronous liver metastases. Studies suggest that up to 30% of patients have non-recognized hepatic metastases during primary surgery for CRC. Intraoperative ultrasonography examination (IOUS) of the liver to detect liver metastases was considered the gold standard during open CRC surgery. Today laparoscopic surgery is the standard procedure, but laparoscopic ultrasound examination (LUS) is not performed routinely...
April 2017: Ultrasound International Open
https://www.readbyqxmd.com/read/28594695/wrist-arthroscopy-in-children-and-adolescent-with-chronic-wrist-pain-arthroscopic-findings-compared-with-mri
#19
Ashok L Ramavath, P N Unnikrishnan, Harvey L George, Paramasivam Sathyamoorthy, Colin E Bruce
BACKGROUND: Wrist arthroscopy is a dynamic diagnostic procedure and its indications are growing as a treatment modality in the adult population. The aim of the study was to retrospectively report our series of pediatric and adolescence with chronic wrist pain, with or without wrist instability who underwent wrist arthroscopy after failing at least 4 months of conservative management. Our secondary aim was to report the sensitivity and specificity of clinical examination and magnetic resonance imaging evaluation for various injury subgroups against the gold standard of the arthroscopic findings...
July 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28592078/-treatment-of-single-one-stage-posterior-atlantoaxial-fixation-in-chiari-malformation
#20
L N Lu, R Zong, X B Xu, X G Yu, G Y Qiao
Objective: To explore the effects of surgical technique of single one-stage posterior C(1-2) screw rod fixation of Chiari malformation (CM) associated with occipitalization and without atlantoaxial dislocation. Methods: A total of 23 patients with CM treated between January 2014 and October 2015 in Department of Neurosurgery of Chinese People's Liberation Army General Hospital were retrospective reviewed. All of them were diagnosis with CM associated with occipitalization and without atlantoaxial dislocation, including 8 males and 15 females, aging from 11 to 57 years (mean (35...
June 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
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