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https://www.readbyqxmd.com/read/29332083/deep-brain-stimulation-interventional-and-intraoperative-mri-approaches
#1
Paul S Larson, Philip A Starr, Alastair J Martin
Interventional and intraoperative MRI approaches to deep brain stimulator implantation are relatively new, and in their purest form represent a distinct departure from traditional stereotactic techniques. They employ a novel means of stereotaxis based on regions of interest in the MR space and simple geometric principles, which eliminate the need for a stereotactic frame. This approach is appropriate for targets that are MR visible, and for whom the local anatomy and function are well characterized. It may also be appropriate for targets that do not have a well-described physiologic signature and for which clinical response to macrostimulation does not play a critical role...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29331884/true-left-sided-gallbladder-a-case-report-and-comparison-with-the-literature-for-the-different-techniques-of-laparoscopic-cholecystectomy-for-such-anomalies
#2
Tamer Saafan, James Yi Hu, Ahmed-Emad Mahfouz, Abdelrahman Abdelaal
INTRODUCTION: True left-sided gallbladder (LSG) is a rare finding that may present with symptoms similar to those of a normally positioned gallbladder. Moreover, it may be missed by preoperative imaging studies such as ultrasound, computed tomography (CT), magnetic resonance imaging (MRI), or endoscopic ultrasound. True left-sided gallbladder is a surgical challenge and surgical technique may need to be modified for the completion of laparoscopic cholecystectomy. PRESENTATION OF CASE: In this case report, we present a case of true left-sided gallbladder that produced right-sided abdominal symptoms...
December 27, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29322208/the-association-of-the-medial-joint-vacuum-phenomenon-with-ulnar-collateral-ligament-injury-in-symptomatic-elbows-of-younger-athletes
#3
Ryan Tai, Tyson Bolinske, Varand Ghazikhanian, Jacob C Mandell
OBJECTIVE: To determine the prevalence of intra-articular gas (IAG) on elbow radiography and evaluate variables, including IAG, as predictors of UCL injury. MATERIALS AND METHODS: This IRB-approved retrospective study consisted of 241 consecutive elbow radiographic studies containing AP radiographs with valgus stress of both symptomatic and asymptomatic sides in 234 patients. The IAG, medial joint space (MJS), and MJS difference between the symptomatic and asymptomatic elbow (MJSD) were evaluated by two readers, as well as patient age, gender, sport played, and handedness...
January 10, 2018: Skeletal Radiology
https://www.readbyqxmd.com/read/29317365/intraoperative-mri-guided-biopsy-in-the-diagnosis-of-suprasellar-langerhans-cell-histiocytosis
#4
Kate T Carroll, Bryson C Lochte, James Y Chen, Vivian S Snyder, Bob S Carter, Clark C Chen
Magnetic resonance imaging (MRI)-guided biopsy is an emerging diagnostic technique that holds great promise for otherwise difficult to access neuroanatomy. Here we describe MRI-guided biopsy of a suprasellar lesion located posterior and superior to the pituitary stalk. The approach was successfully implemented in a 38-year-old woman who had developed progressive visual deterioration. Intra-operative MRI revealed the need for trajectory adjustment due to an unintended, minor deviation in the burr hole entry point, demonstrating the benefit of an MRI-guided approach...
January 6, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29315450/facial-nerve-schwannoma-a-case-report-radiological-features-and-literature-review
#5
Giulia Pilloni, Barbara Massa Mico, Roberto Altieri, Francesco Zenga, Alessandro Ducati, Diego Garbossa, Fulvio Tartara
Facial nerve schwannoma localized in the middle fossa is a rare lesion. We report a case of a facial nerve schwannoma in a 30-year-old male presenting with facial nerve palsy. Magnetic resonance imaging (MRI) showed a 3 cm diameter tumor of the right middle fossa. The tumor was removed using a sub-temporal approach. Intraoperative monitoring allowed for identification of the facial nerve, so it was not damaged during the surgical excision. Neurological clinical examination at discharge demonstrated moderate facial nerve improvement (Grade III House-Brackmann)...
December 22, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/29306849/verbal-learning-and-memory-outcome-in-selective-amygdalohippocampectomy-versus-temporal-lobe-resection-in-patients-with-hippocampal-sclerosis
#6
Mette Thrane Foged, Kirsten Vinter, Louise Stauning, Troels W Kjær, Brice Ozenne, Sándor Beniczky, Olaf B Paulson, Flemming Find Madsen, Lars H Pinborg
PURPOSE: With the advent of new very selective techniques like thermal laser ablation to treat drug-resistant focal epilepsy, the controversy of resection size in relation to seizure outcome versus cognitive deficits has gained new relevance. The purpose of this study was to test the influence of the selective amygdalohippocampectomy (SAH) versus nonselective temporal lobe resection (TLR) on seizure outcome and cognition in patients with mesial temporal lobe epilepsy (MTLE) and histopathological verified hippocampal sclerosis (HS)...
January 4, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29305914/the-comparison-of-monitoring-of-cerebral-blood-flow-by-c-flow-and-transcranial-doppler-in-carotid-endarterectomy
#7
Xu Wang, Bin Yang, Yan Ma, Peng Gao, Yabing Wang, Yanfei Chen, Liqun Jiao, Feng Ling, Guoguang Zhao
OBJECTIVE: To prospectively compare the use of the c-FLOW (cerebral blood flow monitor) and transcranial Doppler (TCD) as two techniques for assessing brain perfusion during carotid endarterectomy (CEA). METHODS: This was a prospective, single center, observational study. All patients were monitored using c-FLOW and TCD during the operation. Changes from baseline values of cerebral blood flow index (CFI) and blood flow velocity of middle cerebral artery (V-MCA) were recorded following carotid artery clamping and unclamping...
January 3, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29291264/medical-imaging-and-laboratory-analysis-of-diagnostic-accuracy-in-107-consecutive-hospitalized-patients-with-diabetic-foot-osteomyelitis-and-partial-foot-amputations
#8
Crystal L Ramanujam, David Han, Thomas Zgonis
The primary aim of our study was to compare the preoperative diagnostic accuracy of plain radiographic findings with the accuracy of magnetic resonance imaging (MRI) findings for diabetic foot osteomyelitis in hospitalized patients who underwent first-time partial foot amputations with confirmed histopathological specimens positive for osteomyelitis. Second, it was desired to determine whether certain variables within the initial clinical presentation and preoperative laboratory findings were associated with more accurate diagnosis of diabetic foot osteomyelitis in this study population...
December 1, 2017: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/29290127/image-guidance-in-transdiscal-fixation-for-high-grade-spondylolisthesis-in-adults-with-correct-spinal-balance
#9
Juan Delgado-Fernández, Paloma Pulido, María Ángeles García-Pallero, Guillermo Blasco, Natalia Frade-Porto, Rafael G Sola
OBJECTIVE Spondylolisthesis is a prevalent spine disease that recent studies estimate could be detected in 9% of the population. High-grade spondylolisthesis (HGS), however, is much less frequent, which makes it difficult to develop a general recommendation for its treatment. Posterior transdiscal fixation was proposed in 1994 for HGS, and the use of spine navigation could make this technique more accessible and reduce the morbidity associated with the procedure. The purpose of this study was to present a case series involving adult patients with HGS and correct spinal alignment who were treated with transdiscal pedicle screw placement guided with neuronavigation and compare the results to those achieved previously without image guidance...
January 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29290044/aggressive-somatotrophinomas-lacking-clinical-symptoms-neurosurgical-management
#10
Mario Giordano, Amir Samii, Rudolf Fahlbusch
We report our experience about somatotrophinomas without clinical manifestation of acromegaly having radiological- and surgical-verified invasion of the cavernous sinus. We present the clinical, radiological and hormonal status of three patients affected by invasive GH-secreting pituitary adenomas without clinical signs and symptoms of acromegaly with elevation of serum IGF-1 from a series of 142 pituitary adenomas operated in our institute with the aid of intraoperative magnetic resonance imaging (MRI). Total tumor removal was possible in two of the three cases; the patients show normal hormonal status and no recurrence at long-term follow-up...
December 30, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/29282486/patient-specific-instrumentation-in-oxford-unicompartmental-knee-arthroplasty-is-reliable-and-accurate-except-for-the-tibial-rotation
#11
B Kerens, A M Leenders, M G M Schotanus, B Boonen, W E Tuinebreijer, P J Emans, B Jong, N P Kort
PURPOSE: Patient-specific instrumentation (PSI) is a technique to plan and position the prosthesis components in unicompartmental knee arthroplasty (UKA) surgery. This study assesses whether the definitive component position in the frontal, sagittal and axial plane is according to the preoperative plan, based on the hypothesis that PSI is accurate. METHODS: Twenty-six patients who had PSI Oxford UKA surgery were included prospectively. The component position in vivo was determined with a postoperative CT-scan and compared with the planned component position using MRI-based digital 3D imaging...
December 27, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29280283/pet-ct-to-detect-adverse-reactions-to-metal-debris-in-patients-with-metal-on-metal-hip-arthroplasty-an-exploratory-prospective-study
#12
Erik Aro, Marko Seppänen, Keijo T Mäkelä, Pauliina Luoto, Anne Roivainen, Hannu T Aro
Metal-on-metal (MoM) bearings in total hip arthroplasties and hip resurfacing arthroplasties have recently shown a new type of complication: adverse reactions to metal debris (ARMD). ARMD is characterized by local severe inflammation and tissue necrosis leading to implant failures. The gluteal muscle region is important for the patient outcome after revision surgery. This prospective positron emission tomography/computed tomography (PET/CT) study was undertaken to evaluate the characteristics of 2-deoxy-2-[18 F]fluoro-d-glucose ([18 F]FDG) and [68 Ga]Gallium citrate ([68 Ga]Citrate) PET/CT in ARMD patients...
December 27, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/29278582/computer-assisted-surgery-virtual-and-augmented-reality-displays-for-navigation-during-urological-interventions
#13
Matthias N van Oosterom, Henk G van der Poel, Nassir Navab, Cornelis J H van de Velde, Fijs W B van Leeuwen
PURPOSE OF REVIEW: To provide an overview of the developments made for virtual- and augmented-reality navigation procedures in urological interventions/surgery. RECENT FINDINGS: Navigation efforts have demonstrated potential in the field of urology by supporting guidance for various disorders. The navigation approaches differ between the individual indications, but seem interchangeable to a certain extent. An increasing number of pre- and intra-operative imaging modalities has been used to create detailed surgical roadmaps, namely: (cone-beam) computed tomography, MRI, ultrasound, and single-photon emission computed tomography...
December 22, 2017: Current Opinion in Urology
https://www.readbyqxmd.com/read/29278579/sentinel-lymph-node-surgery-in-prostate-cancer-using-magnetic-particles
#14
Alexander Winter, Svenja Engels, Friedhelm Wawroschek
PURPOSE OF REVIEW: Superparamagnetic iron oxide nanoparticles (SPIONs) are tested to identify sentinel lymph nodes (SLNs) to exploit the advantages of targeted pelvic SLN dissection (sPLND), while circumventing the disadvantages of established radioactive labeling. Here we review recent studies about sPLND in prostate cancer (PCa), including the first results of SLN detection using intraprostatic SPION-injection. RECENT FINDINGS: A recent systematic literature review reveals that the diagnostic accuracy of sPLND is comparable with extended PLND (ePLND)...
December 22, 2017: Current Opinion in Urology
https://www.readbyqxmd.com/read/29275616/-clinical-research-of-features-of-magnetic-resonance-imaging-of-high-voltage-electrical-burns-in-limbs-at-early-stage
#15
S J Li, Z L Wang, W P Zhu, Y Xiang, J Lin, Y J Yu, P Li
Objective: To analyze the features of magnetic resonance imaging (MRI) of patients with high-voltage electrical burns in limbs at early stage. Methods: Thirty-eight patients with high-voltage electrical burns, conforming to the study criteria, were hospitalized in our unit from March 2013 to August 2016. T(1) weighted imaging (T(1)WI), T(2)WI, fat-suppression T(2)WI plain scan, and fat-suppression T(1)WI enhanced scan of MRI were performed in 78 limbs, including 56 upper limbs and 22 lower limbs at post injury hour 72...
December 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/29275518/borders-of-stn-determined-by-mri-versus-the-electrophysiological-stn-a-comparison-using-intraoperative-ct
#16
Sander Bus, Pepijn van den Munckhof, Maarten Bot, Gian Pal, Bichun Ouyang, Sepehr Sani, Leo Verhagen Metman
BACKGROUND: It is unclear which magnetic resonance imaging (MRI) sequence most accurately corresponds with the electrophysiological subthalamic nucleus (STN) obtained during microelectrode recording (MER, MER-STN). CT/MRI fusion allows for comparison between MER-STN and the STN visualized on preoperative MRI (MRI-STN). OBJECTIVE: To compare dorsal and ventral STN borders as seen on 3-Tesla T2-weighted (T2) and susceptibility weighted images (SWI) with electrophysiological STN borders in deep brain stimulation (DBS) for Parkinson's disease (PD)...
December 23, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29260585/intraoperative-visualisation-of-functional-structures-facilitates-safe-frameless-stereotactic-biopsy-in-the-motor-eloquent-regions-of-the-brain
#17
Jia-Shu Zhang, Ling Qu, Qun Wang, Wei Jin, Yuan-Zheng Hou, Guo-Chen Sun, Fang-Ye Li, Xin-Guang Yu, Ban-Nan Xu, Xiao-Lei Chen
BACKGROUND: For stereotactic brain biopsy involving motor eloquent regions, the surgical objective is to enhance diagnostic yield and preserve neurological function. To achieve this aim, we implemented functional neuro-navigation and intraoperative magnetic resonance imaging (iMRI) into the biopsy procedure. The impact of this integrated technique on the surgical outcome and postoperative neurological function was investigated and evaluated. METHOD: Thirty nine patients with lesions involving motor eloquent structures underwent frameless stereotactic biopsy assisted by functional neuro-navigation and iMRI...
December 20, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/29260294/fatty-filum-terminale-fft-as-a-secondary-tethering-element-in-children-with-closed-spinal-dysraphism
#18
Ankush Gupta, Vedantam Rajshekhar
PURPOSE: The purpose of this study was to assess the prevalence of FFT as an additional tethering element in children operated for closed spinal dysraphism, where FFT was not the primary tethering pathology. METHODS: This is a retrospective study of 195 children (< 18 years of age) who underwent surgery for closed spinal dysraphism and did not have FFT as the primary diagnosis. All patients were operated during the period 2005-2017 by a single surgeon. The commonest diagnosis was a lipomyelomeningocele (LMMC, n = 81, 41...
December 19, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29247539/fluorescein-sodium-guided-resection-of-intracranial-lesions-in-22-dogs
#19
Yukiko Nakano, Kohei Nakata, Sanae Shibata, Yasuhiro Heishima, Hidetaka Nishida, Hiroki Sakai, Hirohito Yano, Hiroaki Kamishina
OBJECTIVE: To evaluate the safety of an intraoperative fluorescein sodium (FS) injection and elucidate the relationships between the MRI findings, pathological diagnoses, and intraoperative staining characteristics of intracranial lesions in 22 dogs. STUDY DESIGN: Prospective case series. ANIMALS: Twenty-two dogs with intracranial lesions. METHODS: FS was intravenously administered to 22 dogs undergoing craniotomy for suspected intracranial tumors to evaluate perioperative and postoperative adverse effects...
December 16, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/29245264/repeated-recurrent-epidermoid-cyst-with-atypical-hyperplasia-a-case-report-and-literature-review
#20
Jialin Li, Ming Qian, Xiaoyi Huang, Li Zhao, Xinghai Yang, Jianru Xiao
RATIONALE: Epidermoid cysts are slow-growing, benign tumor which account for less than 1% of all intraspinal tumors and epidermoid cyst with Atypical Hyperplasia is very rare. Surgical resection is the standard treatment of the tumor, but recurrence is not uncommon after incomplete resection. Inappropriate treatment can lead to repeated recurrent. Here, we reported a case of repeated recurrent epidermoid cyst with atypical hyperplasia treated with radiotherapy after surgery. PRESENTING CONCERNS: A 40-year-old female presenting with intraspinal epidermoid cyst showed incomplete paraplegia in lower limbs...
December 2017: Medicine (Baltimore)
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