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Intraoperative mapping

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https://www.readbyqxmd.com/read/28921242/use-of-computer-assisted-design-and-manufacturing-to-localize-dural-venous-sinuses-during-reconstructive-surgery-for-craniosynostosis
#1
Rajiv R Iyer, Adela Wu, Alexandra Macmillan, Leila Musavi, Regina Cho, Joseph Lopez, George I Jallo, Amir H Dorafshar, Edward S Ahn
OBJECTIVE: Cranial vault remodeling surgery for craniosynostosis carries the potential risk of dural venous sinus injury given the extensive bony exposure. Identification of the dural venous sinuses can be challenging in patients with craniosynostosis given the lack of accurate surface-localizing landmarks. Computer-aided design and manufacturing (CAD/CAM) has allowed surgeons to pre-operatively plan these complex procedures in an effort to increase reconstructive efficiency. An added benefit of this technology is the ability to intraoperatively map the dural venous sinuses based on pre-operative imaging...
September 18, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28921173/maximizing-safe-resections-the-roles-of-5-aminolevulinic-acid-and-intraoperative-mr-imaging-in-glioma-surgery-review-of-the-literature
#2
REVIEW
Eric Suero Molina, S Schipmann, W Stummer
Malignant glioma surgery involves the challenge of preserving the neurological status of patients harboring these lesions while pursuing a maximal tumor resection, which is correlated with overall and progression-free survival. Presently, several tools exist for assisting neurosurgeons in visualizing malignant tissue. Fluorescence-guided surgery (FGS) with 5-aminolevulinic acid (5-ALA) has increasingly been used during the last decade for identifying malignant glioma. Intraoperative magnetic resonance imaging (iMRI), first introduced in the mid-1990s, is being evaluated as a further tool to maximize the extent of resection...
September 18, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28919031/a-pilot-study-to-assess-near-infrared-laparoscopy-with-indocyanine-green-icg-for-intraoperative-sentinel-lymph-node-mapping-in-early-colon-cancer
#3
A C Currie, A Brigic, S Thomas-Gibson, N Suzuki, M Moorghen, J T Jenkins, O D Faiz, R H Kennedy
BACKGROUND: Previous attempts at sentinel lymph node (SLN) mapping in colon cancer have been compromised by ineffective tracers and the inclusion of advanced disease. This study evaluated the feasibility of fluorescence detection of SLNs with indocyanine green (ICG) for lymphatic mapping in T1/T2 clinically staged colonic malignancy. METHODS: Consecutive patients with clinical T1/T2 stage colon cancer underwent endoscopic peritumoral submucosal injection of indocyanine green (ICG) for fluorescence detection of SLN using a near-infrared (NIR) camera...
August 23, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28912205/epicardial-breakthrough-waves-during-sinus-rhythm-depiction-of-the-arrhythmogenic-substrate
#4
Elisabeth M J P Mouws, Eva A H Lanters, Christophe P Teuwen, Lisette J M E van der Does, Charles Kik, Paul Knops, Jos A Bekkers, Ad J J C Bogers, Natasja M S de Groot
BACKGROUND: Epicardial breakthrough waves (EBW) during atrial fibrillation are important elements of the arrhythmogenic substrate and result from endo-epicardial asynchrony, which also occurs to some degree during sinus rhythm (SR). We examined the incidence and characteristics of EBW during SR and its possible value in the detection of the arrhythmogenic substrate associated with atrial fibrillation. METHODS AND RESULTS: Intraoperative epicardial mapping (interelectrode distances 2 mm) of the right atrium, Bachmann's bundle, the left atrioventricular groove, and the pulmonary vein area was performed during SR in 381 patients (289 male, 67±10 years) with ischemic or valvular heart disease...
September 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28911828/laparoscopic-sentinel-lymph-node-mapping-with-indocyanine-green-icg-using-ispies-platform-the-initial-experience-in-argentina
#5
Julian Di Guilmi, Maria Cecilia Darin, Maria Toscano, Gustavo Maya
OBJECTIVE: To demonstrate the initial experience in Argentina using the iSpies ICG platform in performing sentinel lymph node mapping in early-stage cervical cancer. Design Step-by-step video and pictures BACKGROUND: Laparoscopic and robotic sentinel lymph node mapping using ICG has been shown to be safe and feasible. However, the use of fluorescent imaging through a minimally invasive approach in developing countries is very limited given the cost restrictions of acquiring the near infrared technology and the fluorescent dyes...
September 11, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28887584/ocular-perfusion-pressure-control-during-pars-plana-vitrectomy-testing-a-novel-device
#6
Tommaso Rossi, Giorgio Querzoli, Aldo Gelso, Giampiero Angelini, Alessandro Rossi, Paolo Corazza, Laura Landi, Serena Telani, Guido Ripandelli
PURPOSE: To study the efficacy of a novel device intended to control infusion pressure based on mean ocular perfusion pressure (MOPP) during pars plana vitrectomy (PPV). METHODS: An arm blood pressure cuff connected to a vitrectomy machine calculated mean arterial pressure (MAP), while a pressure sensor close to the infusion trocar measured intraocular pressure (IOP). MOPP was calculated in real time in 36 consecutive patients undergoing PPV, who were divided into two groups...
September 8, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28885664/postoperative-acute-kidney-injury-in-living-donor-liver-transplantation-recipients
#7
Hakan K Atalan, Bulent Gucyetmez, Serdar Aslan, Serafettin Yazar, Kamil Y Polat
PURPOSE: There are many risk factors for postoperative acute kidney injury in liver transplantation. The aim of this study is to investigate the risk factors for postoperative acute kidney injury in living donor liver transplantation recipients. METHODS: 220 living donor liver transplantation recipients were retrospectively evaluated in the study. According to the Kidney Disease Improving Global Outcomes Guidelines, acute kidney injury in postoperative day 7 was investigated for all patients...
September 5, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28882861/real-time-motor-cortex-mapping-for-the-safe-resection-of-glioma-an-intraoperative-resting-state-fmri-study
#8
T-M Qiu, F-Y Gong, X Gong, J-S Wu, C-P Lin, B B Biswal, D-X Zhuang, C-J Yao, X-L Zhang, J-F Lu, F-P Zhu, Y Mao, L-F Zhou
BACKGROUND AND PURPOSE: Resting-state functional MR imaging has been used for motor mapping in presurgical planning but never used intraoperatively. This study aimed to investigate the feasibility of applying intraoperative resting-state functional MR imaging for the safe resection of gliomas using real-time motor cortex mapping during an operation. MATERIALS AND METHODS: Using interventional MR imaging, we conducted preoperative and intraoperative resting-state intrinsic functional connectivity analyses of the motor cortex in 30 patients with brain tumors...
September 7, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28880340/topography-guided-photorefractive-keratectomy-in-the-treatment-of-corneal-scarring
#9
Nir Sorkin, Adi Einan-Lifshitz, Tanguy Boutin, Mahmood Showail, Armand Borovik, Clara C Chan, David S Rootman
PURPOSE: To report the outcome of topography-guided photorefractive keratectomy (TG-PRK) in the treatment of patients with corneal scarring. METHODS: A retrospective, interventional case series including 6 eyes of 6 patients with corneal scarring and irregular astigmatism who underwent TG-PRK. The etiologies for scarring were: infectious corneal ulcers, foreign body trauma, LASIK flap buttonhole, and lamellar keratoplasties performed to correct corneal perforation secondary to corneal melting...
September 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28877111/effects-of-curvilinear-supine-position-on-tissue-interface-pressure-a-prospective-before-and-after-study
#10
Yue Guo, Yan Li, Kuaile Zhao, Xiao Yue, Yunhong Yu, Wan Kuang, Jing Liu, Xiangyan Li, Tiyu Zhao
PURPOSE: To determine whether a curvilinear supine position increases the contact area between the subject and the surgical table, reduces interface pressures within contact areas, and improves comfort. DESIGN: This observational study was completed to establish proof-of-concept to determine differences between 2 positions (supine and curvilinear) on interface pressure of 5 at-risk anatomical locations, overall contact area, and subjects' comfort level. SUBJECTS AND SETTING: The study was conducted at the operating theater of a tertiary teaching hospital in Wuhan, China...
September 2017: Journal of Wound, Ostomy, and Continence Nursing
https://www.readbyqxmd.com/read/28861700/a-method-for-going-from-2d-laparoscope-to-3d-acquisition-of-surface-landmarks-by-a-novel-computer-vision-approach
#11
Marc Garbey, Toan B Nguyen, Albert Y Huang, Vid Fikfak, Brian J Dunkin
PURPOSE: This paper presents a method to use the Smart Trocars-our new surgical instrument recognition system-or any accurate localization system of surgical instrument for acquiring intraoperative surface data. Complex laparoscopic surgeries need a proper guidance system which requires registering the preoperative data from a CT or MRI scan to the intraoperative patient state. The Smart Trocar can be used to localize the instruments when it comes to contact with the soft tissue surface...
August 31, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28856576/changes-in-transcranial-motor-evoked-potentials-during-hemorrhage-are-associated-with-increased-serum-propofol-concentrations
#12
Jeremy A Lieberman, John Feiner, Mark Rollins, Russ Lyon
Transcranial motor evoked potentials (TcMEPs) monitor the integrity of the spinal cord during spine surgery. Propofol-based anesthesia is favored in order to enhance TcMEP quality. During intraoperative hemorrhage, TcMEP amplitudes may be reduced. The serum concentration of propofol may increase during hemorrhage. No study has determined whether changes in TcMEPs due to hemorrhage are related to changes in propofol blood levels. We monitored TcMEPs, mean arterial pressure (MAP), and cardiac output (CO) and hemoglobin in pigs (n = 6) undergoing controlled progressive hemorrhage during a standardized anesthetic with infusions of propofol, ketamine, and fentanyl...
August 30, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28856007/a-pilot-study-of-lymph-node-mapping-with-indocyanine-green-in-robotic-gastrectomy-for-gastric-cancer
#13
Yuan-Tzu Lan, Kuo-Hung Huang, Ping-Hsien Chen, Chien-An Liu, Su-Shun Lo, Chew-Wun Wu, Yi-Ming Shyr, Wen-Liang Fang
OBJECTIVES: Robotic gastrectomy has become increasingly popular in the treatment of gastric cancer, especially in Asian countries. The use of indocyanine green fluorescence has been reported in lymphatic mapping for gastric cancer in laparoscopic gastrectomy; however, there have been few reports regarding the use of indocyanine green in robotic gastrectomy. METHODS: From January 2011 to March 2016, a total of 79 patients underwent robotic gastrectomy for gastric cancer...
2017: SAGE Open Medicine
https://www.readbyqxmd.com/read/28844645/direct-electrical-stimulation-in-the-human-brain-disrupts-melody-processing
#14
Frank E Garcea, Benjamin L Chernoff, Bram Diamond, Wesley Lewis, Maxwell H Sims, Samuel B Tomlinson, Alexander Teghipco, Raouf Belkhir, Sarah B Gannon, Steve Erickson, Susan O Smith, Jonathan Stone, Lynn Liu, Trenton Tollefson, John Langfitt, Elizabeth Marvin, Webster H Pilcher, Bradford Z Mahon
Prior research using functional magnetic resonance imaging (fMRI) [1-4] and behavioral studies of patients with acquired or congenital amusia [5-8] suggest that the right posterior superior temporal gyrus (STG) in the human brain is specialized for aspects of music processing (for review, see [9-12]). Intracranial electrical brain stimulation in awake neurosurgery patients is a powerful means to determine the computations supported by specific brain regions and networks [13-21] because it provides reversible causal evidence with high spatial resolution (for review, see [22, 23])...
September 11, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28842674/hyperspectral-data-processing-improves-ppix-contrast-during-fluorescence-guided-surgery-of-human-brain-tumors
#15
J J Bravo, J D Olson, S C Davis, D W Roberts, K D Paulsen, S C Kanick
Fluorescence guided surgery (FGS) using aminolevulinic-acid (ALA) induced protoporphyrin IX (PpIX) provides intraoperative visual contrast between normal and malignant tissue during resection of high grade gliomas. However, maps of the PpIX biodistribution within the surgical field based on either visual perception or the raw fluorescence emissions can be masked by background signals or distorted by variations in tissue optical properties. This study evaluates the impact of algorithmic processing of hyperspectral imaging acquisitions on the sensitivity and contrast of PpIX maps...
August 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28842233/pattern-of-corticospinal-projections-defined-by-brain-mapping-during-resective-epilepsy-surgery-in-a-patient-with-congenital-hemiparesis-and-intractable-epilepsy
#16
Chen-Ya Yang, Hsin-Hung Chen, Chien Chen, Jan-Wei Chiu, Chen-Liang Chou, Tsui-Fen Yang
BACKGROUND: Congenital or early acquired brain structural lesions often cause contralateral hemiparesis as well as cognitive deficits, developmental delays, and seizures. Among them, seizure is the most debilitating condition, as it greatly impairs the quality of life in both the affected individuals and their caregivers and prevents them from active social participation. CASE DESCRIPTION: Here, we present a 34-year-old man with hemiparesis and early-onset seizures since childhood owing to a congenital brain lesion...
August 22, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28841121/elaborate-mapping-of-the-posterior-visual-pathway-in-awake-craniotomy
#17
Tal Shahar, Akiva Korn, Gal Barkay, Tali Biron, Amir Hadanny, Tomer Gazit, Erez Nossek, Margaret Ekstein, Anat Kesler, Zvi Ram
OBJECTIVE Resection of intraaxial tumors adjacent to the optic radiation (OR) may be associated with postoperative visual field (VF) deficits. Intraoperative navigation using MRI-based tractography and electrophysiological monitoring of the visual pathways may allow maximal resection while preserving visual function. In this study, the authors evaluated the value of visual pathway mapping in a series of patients undergoing awake craniotomy for tumor resection. METHODS A retrospective analysis of prospectively collected data was conducted in 18 patients who underwent an awake craniotomy for resection of intraaxial tumors involving or adjacent to the OR...
August 25, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28839464/chelator-free-radiolabeling-of-serrs-nanoparticles-for-whole-body-pet-and-intraoperative-raman-imaging
#18
Matthew A Wall, Travis M Shaffer, Stefan Harmsen, Darjus-Felix Tschaharganeh, Chun-Hao Huang, Scott W Lowe, Charles Michael Drain, Moritz F Kircher
A single contrast agent that offers whole-body non-invasive imaging along with the superior sensitivity and spatial resolution of surface-enhanced resonance Raman scattering (SERRS) imaging would allow both pre-operative mapping and intraoperative imaging and thus be highly desirable. We hypothesized that labeling our recently reported ultrabright SERRS nanoparticles with a suitable radiotracer would enable pre-operative identification of regions of interest with whole body imaging that can be rapidly corroborated with a Raman imaging device or handheld Raman scanner in order to provide high precision guidance during surgical procedures...
2017: Theranostics
https://www.readbyqxmd.com/read/28839445/laparoscopic-ultrasonography-as-an-alternative-to-intraoperative-cholangiography-during-laparoscopic-cholecystectomy
#19
REVIEW
Alexandra Dili, Claude Bertrand
AIM: To assess the role of laparoscopic ultrasound (LUS) as a substitute for intraoperative cholangiography (IOC) during cholecystectomy. METHODS: We present a MEDLINE and PubMed literature search, having used the key-words "laparoscopic intraoperative ultrasound" and "laparoscopic cholecystectomy". All relevant English language publications from 2000 to 2016 were identified, with data extracted for the role of LUS in the anatomical delineation of the biliary tract, detection of common bile duct stones (CBDS), prevention or early detection of biliary duct injury (BDI), and incidental findings during laparoscopic cholecystectomy...
August 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28838912/anatomic-location-of-tumor-predicts-the-accuracy-of-motor-function-localization-in-diffuse-lower-grade-gliomas-involving-the-hand-knob-area
#20
S Fang, J Liang, T Qian, Y Wang, X Liu, X Fan, S Li, Y Wang, T Jiang
BACKGROUND AND PURPOSE: The accuracy of preoperative blood oxygen level-dependent fMRI remains controversial. This study assessed the association between the anatomic location of a tumor and the accuracy of fMRI-based motor function mapping in diffuse lower-grade gliomas. MATERIALS AND METHODS: Thirty-five patients with lower-grade gliomas involving motor areas underwent preoperative blood oxygen level-dependent fMRI scans with grasping tasks and received intraoperative direct cortical stimulation...
August 24, 2017: AJNR. American Journal of Neuroradiology
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