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https://www.readbyqxmd.com/read/28417602/novel-use-of-perfusion-balloon-inflation-to-avoid-outflow-tract-obstruction-during-transcatheter-mitral-valve-in-valve-replacement
#1
Howard C Herrmann, Wilson Y Szeto, Harold Litt, William Vernick
Left ventricular outflow tract (LVOT) obstruction is a recognized complication of transcatheter mitral valve-in-valve replacement in previous surgical prostheses. We describe a patient who was high risk for repeat open surgery in whom the LVOT was compromised by a surgical strut and the potential for LVOT obstruction. A novel approach to avoiding this complication was utilized. A perfusion balloon was inflated in the outflow tract to provide an opposing force during mitral valve deployment resulting in less flaring of the strut into the outflow tract thereby improving the neo-LVOT area...
April 18, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28411414/laser-interstitial-thermotherapy-litt-in-epilepsy-surgery
#2
REVIEW
Christian Hoppe, Juri-Alexander Witt, Christoph Helmstaedter, Thomas Gasser, Hartmut Vatter, Christian E Elger
Besides other innovative stereotactic procedures (radiofrequency thermocoagulation, focused ultrasound, gamma knife) laser interstitial thermotherapy (LiTT) provides minimally invasive destruction of pathological soft tissues which could be especially relevant for epilepsy surgeries involving adult and pediatric patients. Unlike standard resections, no craniotomy is required; just a tiny borehole trepanation is sufficient. Damage to cortical areas when accessing deep lesions can be minimized or completely avoided, and treating epileptogenic foci near eloquent or even vital brain areas becomes possible...
April 6, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28409062/improved-availability-and-quality-of-care-with-epilepsy-nurse-practitioners
#3
Chloe E Hill, Bethany Thomas, Kimberly Sansalone, Kathryn A Davis, Judy A Shea, Brian Litt, Nabila Dahodwala
BACKGROUND: This study investigated the quality of care delivered by nurse practitioner (NP)-physician teams employed to expand clinic appointment availability for patients with epilepsy. METHODS: We performed a retrospective observational cohort study of patients with epilepsy presenting to the Penn Epilepsy Center for a new patient appointment in 2014. During this time, patients were seen either by an NP-physician team care model or a more traditional physician-only care model...
April 2017: Neurology. Clinical Practice
https://www.readbyqxmd.com/read/28395232/laser-interstitial-thermotherapy-application-for-breast-surgery-current-situation-and-new-trends
#4
REVIEW
Yohan Kerbage, Nacim Betrouni, Pierre Collinet, Henri Azaïs, Serge Mordon, Anne-Sophie Dewalle-Vignion, Benjamin Merlot
While breast specialists debate on therapeutic de-escalation in breast cancer, the treatment of benign lesions is also discussed in relation to new percutaneous ablation techniques. The purpose of these innovations is to minimize potential morbidity. Laser Interstitial ThermoTherapy (LITT) is an option for the ablation of targeted nodules. This review evaluated the scientific publications investigating the LITT approach in malignant and benign breast disease. Three preclinical studies and eight clinical studies (2 studies including fibroadenomas and 6 studies including breast cancers) were reviewed...
April 7, 2017: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/28362211/laser-interstitial-thermal-therapy-for-palliative-ablation-of-a-chordoma-metastasis-to-the-spine-case-report
#5
Brian J Williams, Patrick J Karas, Ganesh Rao, Laurence D Rhines, Claudio E Tatsui
The authors present the first report of laser interstitial thermal therapy (LITT) ablation of a recurrent chordoma metastasis to the cervical spine. This patient was a 75-year-old woman who was diagnosed and treated for a sacral chordoma, and then developed metastases to the lung and upper thoracic spine. Unfortunately she experienced symptomatic recurrence at the C-7 spinous process. She underwent an uncomplicated LITT to the lesion. The patient convalesced without incident and was discharged on postoperative Day 1...
March 31, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28348940/minimally-invasive-robotic-laser-corpus-callosotomy-a-proof-of-concept
#6
Harminder Singh, Walid I Essayed, Sayantan Deb, Caitlin Hoffman, Theodore H Schwartz
INTRODUCTION: We describe the feasibility of using minimally invasive robotic laser interstitial thermotherapy (LITT) for achieving an anterior two-thirds as well as a complete corpus callosotomy. METHODS: Ten probe trajectories were plotted on normal magentic resonance imaging (MRI) scans using the Brainlab Stereotactic Planning Software (Brainlab, Munich, Germany). The NeuroBlate® System (Monteris Medical, MN, USA) was used to conform the thermal burn to the corpus callosum along the trajectory of the probe...
February 10, 2017: Curēus
https://www.readbyqxmd.com/read/28338469/the-utility-of-thyroid-ultrasonography-in-the-management-of-thyroid-nodules
#7
Gary Gamme, Tyler Parrington, Edward Wiebe, Sunita Ghosh, Brendan Litt, David C Williams, Todd P W McMullen
BACKGROUND: Ultrasonography for thyroid nodules is one of the most common imaging tests performed in the general population. Details from ultrasound reports guide biopsies and surgery. This study quantifies the completeness of these reports based on Thyroid Imaging and Reporting System (TI-RADS) criteria and considers their utility in predicting malignant disease. METHODS: We retrospectively reviewed ultrasound reports for 329 thyroidectomy patients and extracted data elements using the TI-RADS criteria: nodule size, echogenicity, margins, vascularity, solid/cystic composition and the presence or absence of microcalcifications and the halo sign...
April 2017: Canadian Journal of Surgery. Journal Canadien de Chirurgie
https://www.readbyqxmd.com/read/28327935/science-in-the-cloud-sic-a-use-case-in-mri-connectomics
#8
Gregory Kiar, Krzysztof J Gorgolewski, Dean Kleissas, William Gray Roncal, Brian Litt, Brian Wandell, Russel A Poldrack, Martin Wiener, R Jacob Vogelstein, Randal Burns, Joshua T Vogelstein
Modern technologies are enabling scientists to collect extraordinary amounts of complex and sophisticated data across a huge range of scales like never before. With this onslaught of data, we can allow the focal point to shift from data collection to data analysis. Unfortunately, lack of standardized sharing mechanisms and practices often make reproducing or extending scientific results very difficult. With the creation of data organization structures and tools which drastically improve code portability, we now have the opportunity to design such a framework for communicating extensible scientific discoveries...
March 7, 2017: GigaScience
https://www.readbyqxmd.com/read/28324881/optic-radiation-tractography-and-visual-field-deficits-in-laser-interstitial-thermal-therapy-for-amygdalohippocampectomy-in-patients-with-mesial-temporal-lobe-epilepsy
#9
Dali Yin, John A Thompson, Cornelia Drees, Steven G Ojemann, Lidia Nagae, Victoria S Pelak, Aviva Abosch
BACKGROUND/AIMS: Laser interstitial thermal therapy (LITT) has become an alternative to open-resective surgery for refractory mesial temporal lobe epilepsy (MTLE). Occurrence of visual field defects (VFDs) following open surgery for MTLE is reported at 52-100%. We examined the rate of VFDs following LITT for amygdalohippocampectomy (AHE) and correlated the occurrence of VFDs with damage to the optic radiations, assessed by diffusion tensor tractography (DTI). METHODS: We performed a retrospective analysis of 5 patients who underwent LITT-AHE for medically refractory MTLE...
March 22, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28303256/recurring-functional-interactions-predict-network-architecture-of-interictal-and-ictal-states-in-neocortical-epilepsy
#10
Ankit N Khambhati, Danielle S Bassett, Brian S Oommen, Stephanie H Chen, Timothy H Lucas, Kathryn A Davis, Brian Litt
Human epilepsy patients suffer from spontaneous seizures, which originate in brain regions that also subserve normal function. Prior studies demonstrate focal, neocortical epilepsy is associated with dysfunction, several hours before seizures. How does the epileptic network perpetuate dysfunction during baseline periods? To address this question, we developed an unsupervised machine learning technique to disentangle patterns of functional interactions between brain regions, or subgraphs, from dynamic functional networks constructed from approximately 100 h of intracranial recordings in each of 22 neocortical epilepsy patients...
January 2017: ENeuro
https://www.readbyqxmd.com/read/28281498/from-resection-to-ablation-a-review-of-resective-surgical-options-for-temporal-lobe-epilepsy-and-rationale-for-an-ablation-based-approach
#11
REVIEW
Anne Coyle, Jonathan Riley, Chengyuan Wu, Ashwini Sharan
Surgical intervention is of proven benefit in an appropriately selected subset of patients with medically refractory temporal lobe epilepsy. In these patients, a surgical cure both provides the quality of life improvement that comes from seizure freedom as well as a survival benefit. However, patients who undergo open surgical intervention may have a worsening in neurobehavioral outcomes. Laser interstitial thermal therapy (LITT) represents a minimally invasive surgical intervention that has shown promise in improving post-operative neurobehavioral outcomes...
2017: Neurology India
https://www.readbyqxmd.com/read/28244590/laser-thermal-ablation-for-mesiotemporal-epilepsy-analysis-of-ablation-volumes-and-trajectories
#12
Walter J Jermakowicz, Andres M Kanner, Samir Sur, Christina Bermudez, Pierre-Francois D'Haese, John Paul G Kolcun, Iahn Cajigas, Rui Li, Carlos Millan, Ramses Ribot, Enrique A Serrano, Naymee Velez, Merredith R Lowe, Gustavo J Rey, Jonathan R Jagid
OBJECTIVE: To identify features of ablations and trajectories that correlate with optimal seizure control and minimize the risk of neurocognitive deficits in patients undergoing laser interstitial thermal therapy (LiTT) for mesiotemporal epilepsy (mTLE). METHODS: Clinical and radiographic data were reviewed from a prospectively maintained database of all patients undergoing LiTT for the treatment of mTLE at the University of Miami Hospital. Standard preoperative and postoperative evaluations, including contrast-enhanced magnetic resonance imaging (MRI) and neuropsychological testing, were performed in all patients...
February 28, 2017: Epilepsia
https://www.readbyqxmd.com/read/28199998/delayed-intraparenchymal-and-intraventricular-hemorrhage-requiring-surgical-evacuation-after-mri-guided-laser-interstitial-thermal-therapy-for-lesional-epilepsy
#13
Sean M Barber, Luke Tomycz, Timothy George, Dave F Clarke, Mark Lee
BACKGROUND: Symptomatic intracranial hemorrhage is a rare complication of laser interstitial thermal therapy (LITT). OBJECTIVES: To present a unique case of delayed symptomatic intracranial hemorrhage occurring after a LITT procedure for epilepsy in a high-volume center (68 LITT procedures for pediatric epilepsy have been performed). METHODS: An 18-year-old male with epilepsy underwent LITT to an area of heterotopia near the right lateral ventricle...
February 16, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28183124/addendum-to-kirwan-i-et-al-i-2016-i-zootaxa-i-4121-1-89-94
#14
Normand David, Steven M S Gregory, Guy M Kirwan, James A Jobling, Frank D Steinheimer, Guilherme Renzo Rocha Brito
Following the publication of Kirwan et al. (2016), it has been brought to our attention that the treatment of any possible alternative genus-group name for Parus pipra Linnaeus, 1758, when treated as monotypic, was not as self-evident to others as it was to the authors. As there is no "case law" in Zoological Nomenclature, and whatever conclusions we reached were naturally subject to our interpretation of the Code (ICZN 1999), and may not necessarily accord with the views of others, we have revisited "Pythis Viell...
January 6, 2017: Zootaxa
https://www.readbyqxmd.com/read/28095688/effect-of-gold-nanoparticle-size-and-coating-on-labeling-monocytes-for-ct-tracking
#15
Peter Chhour, Johoon Kim, Barbara Benardo, Alfredo Tovar, Shaameen Mian, Harold I Litt, Victor A Ferrari, David P Cormode
With advances in cell therapies, interest in cell tracking techniques to monitor the migration, localization, and viability of these cells continues to grow. X-ray computed tomography (CT) is a cornerstone of medical imaging but has been limited in cell tracking applications due to its low sensitivity toward contrast media. In this study, we investigate the role of size and surface functionality of gold nanoparticles for monocyte uptake to optimize the labeling of these cells for tracking in CT. We synthesized gold nanoparticles (AuNP) that range from 15 to 150 nm in diameter and examined several capping ligands, generating 44 distinct AuNP formulations...
January 18, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28057690/related-allopolyploids-display-distinct-floral-pigment-profiles-and-transgressive-pigments
#16
Elizabeth W McCarthy, Andrea E Berardi, Stacey D Smith, Amy Litt
PREMISE OF THE STUDY: Both polyploidy and shifts in floral color have marked angiosperm evolution. Here, we investigate the biochemical basis of the novel and diverse floral phenotypes seen in allopolyploids in Nicotiana (Solanaceae) and examine the extent to which the merging of distinct genomes alters flavonoid pigment production. METHODS: We analyzed flavonol and anthocyanin pigments from Nicotiana allopolyploids of different ages (N. tabacum, 0.2 million years old; several species from Nicotiana section Repandae, 4...
January 5, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28046666/su-f-j-03-treatment-planning-for-laser-ablation-therapy-in-presence-of-heterogeneous-tissue-a-retrospective-study
#17
R Madankan, C MacLellan, S Fahrenholtz, J Weinberg, G Rao, J Hazle, R Stafford, D Fuentes
PURPOSE: MR guided Laser Induced Thermal Therapy (MRgLITT) is an effective technique for cancerous tissue destruction in brain. Precise modeling of the thermal ablation procedure is important for treatment planning for MRgLITT. Physical properties of target tissue such as optical attenuation (µ) highly affect the outcome of thermal ablation modeling. Hence to ensure accuracy of modeling scheme, it is crucial to precisely estimate patient specific heterogeneity in these parameters. METHODS: A steady-state Bioheat model is used for simulation of temperature field over the heterogeneous target tissue...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28009635/perioperative-and-anesthetic-considerations-for-neurosurgical-laser-interstitial-thermal-therapy-ablations
#18
Federico Jimenez-Ruiz, Benjamin Arnold, Claudio E Tatsui, Juan P Cata
OBJECTIVE: To describe the anesthetic considerations in patients undergoing laser interstitial thermal therapy (LITT) for neurosurgical procedures. BACKGROUND: LITT for neurosurgical procedures is being increasingly used in a variety of central nervous system diseases. Several studies have demonstrated promising results including a shorter hospital stay. Given the rising trend for the use of LITT, anesthesiologists need to be familiar with the anesthetic considerations to provide care for patients undergoing these types of procedures...
December 22, 2016: Journal of Neurosurgical Anesthesiology
https://www.readbyqxmd.com/read/28003942/clinical-usage-and-economic-effectiveness-of-a-recently-developed-epidermal-autograft-harvesting-system-in-13-chronic-wound-patients-in-a-university-based-wound-center
#19
Angela Hulsey, Paul Linneman, Jeff Litt
INTRODUCTION:  Chronic wounds are a significant healthcare problem in the United States. Their costs approach 25 billion dollars in the United States. Current wound-care treatments of local wound care, moist dressings, and source control, while necessary for wound healing, are frequently not enough to ensure complete wound closure. The current surgical technique of split-thickness skin grafting is an operative procedure, painful, time-consuming, and leaves significant donor site wounds...
November 14, 2016: Curēus
https://www.readbyqxmd.com/read/27995431/prototype-willingness-model-drinking-cognitions-mediate-personalized-normative-feedback-efficacy
#20
Melissa A Lewis, Dana M Litt, Mary Tomkins, Clayton Neighbors
Personalized normative feedback (PNF) interventions have been shown to be efficacious at reducing college student drinking. Because descriptive norms have been shown to mediate PNF efficacy, the current study focused on examining additional prototype willingness model social reaction cognitions, namely, prototypes and willingness, as mediators of intervention efficacy. We expected the PNF interventions to be associated with increased prototype favorability of students who do not drink, which would in turn be associated with decreased willingness to drink and subsequently, less drinking...
December 19, 2016: Prevention Science: the Official Journal of the Society for Prevention Research
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