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https://www.readbyqxmd.com/read/28227792/an-innovative-therapy-for-peri-implantitis-based-on-radio-frequency-electric-current-numerical-simulation-results-and-clinical-evidence
#1
G Cosoli, L Scalise, G Tricarico, E P Tomasini, G Cerri, G Cosoli, L Scalise, G Tricarico, E P Tomasini, G Cerri, G Cosoli, E P Tomasini, G Cerri, G Tricarico, L Scalise
Peri-implantitis is a severe inflammatory pathology that affects soit and hard tissues surrounding dental implants. Nowadays, only prevention is effective to contrast peri-implantitis, but, in recent years, there is the clinical evidence of the efficiency of a therapy based on the application of radio frequency electric current, reporting that 81% of the cases (66 implants, 46 patients) were successfully treated. The aim of this paper is to present the therapy mechanism, exploring the distribution of the electric currents in normal and pathologic tissues...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227728/comparison-between-users-of-a-new-methodology-for-heart-sound-auscultation
#2
Ana Castro, Pedro Gomes, Sandra S Mattos, Miguel T Coimbra, Ana Castro, Pedro Gomes, Sandra S Mattos, Miguel T Coimbra, Ana Castro, Sandra S Mattos, Pedro Gomes, Miguel Y Coimbra
Auscultation is a routine exam and the first line of screening in heart pathologies. The objective of this study was to assess if using a new data collection system, the DigiScope Collector, with a guided and automatic annotation of heart auscultation, different levels of expertise/experience users could collect similar digital auscultations. Data were collected within the Heart Caravan Initiative (Paraíba, Brasil). Patients were divided into two study groups: Group 1 evaluated by a third year medical student (User 1), and an experienced nurse (User 2); Group 2 evaluated by User 2 and an Information Technology professional (User 3)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227670/diffuse-reflectance-spectroscopy-can-differentiate-high-grade-and-low-grade-prostatic-carcinoma
#3
Priya N Werahera, Edward A Jasion, E David Crawford, M Scott Lucia, Adrie van Bokhoven, Holly T Sullivan, Fernando J Kim, Paul D Maroni, J David Port, John W Daily, Francisco G La Rosa, Priya N Werahera, Edward A Jasion, E David Crawford, M Scott Lucia, Adrie van Bokhoven, Holly T Sullivan, Fernando J Kim, Paul D Maroni, J David Port, John W Daily, Francisco G La Rosa, John W Daily, Adrie Van Bokhoven, E David Crawford, J David Port, Priya N Werahera, M Scott Lucia, Holly T Sullivan, Paul D Maroni, Edward A Jasion, Francisco G La Rosa, Fernando J Kim
Prostate tumors are graded by the revised Gleason Score (GS) which is the sum of the two predominant Gleason grades present ranging from 6-10. GS 6 cancer exclusively with Gleason grade 3 is designated as low grade (LG) and correlates with better clinical prognosis for patients. GS >7 cancer with at least one of the Gleason grades 4 and 5 is designated as HG indicate worse prognosis for patients. Current transrectal ultrasound guided prostate biopsies often fail to correctly diagnose HG prostate cancer due to sampling errors...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227389/a-method-to-project-clinical-outcome-topographies-onto-preoperative-mri-to-guide-direct-dbs-targeting
#4
Mahesh B Shenai, Barton L Guthrie, Mahesh B Shenai, Barton L Guthrie, Barton L Guthrie, Mahesh B Shenai
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
https://www.readbyqxmd.com/read/28227380/efficient-rendering-of-digitally-reconstructed-radiographs-on-heterogeneous-computing-architectures-using-central-slice-theorem
#5
Marwan Abdellah, Mohamed Abdallah, Mohamed Alzanati, Ayman Eldeib, Marwan Abdellah, Mohamed Abdallah, Mohamed Alzanati, Ayman Eldeib, Ayman Eldeib, Mohamed Abdallah, Mohamed Alzanati, Marwan Abdellah
Digitally reconstructed radiographs (DRRs) play a significant role in modern clinical radiation therapy. They are used to verify patient alignments during image guided therapies with 2D-3D image registration. The generation of DRRs can be implemented intuitively in O(N(3)) relying on direct volume rendering (DVR) methods, such as ray marching. This complexity imposes certain limitations on the rendering performance if high quality DRR images are needed. Those DRRs can be alternatively generated in the k-space using the central slice theorem in O(N(2)logN)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227041/deformable-resection-process-map-for-intraoperative-cutting-guides
#6
Megumi Nakao, Kojiro Taura, Tetsuya Matsuda, Megumi Nakao, Kojiro Taura, Tetsuya Matsuda, Megumi Nakao, Kojiro Taura, Tetsuya Matsuda
In this paper, we will introduce the concept of deformable resection process mapping as a time-varying geometric guide for soft tissue tumor resection procedures. The deformable resection process map (RPM) estimates the local appearance of vascular structures after cuts as a novel guide. The RPM can be directly generated from patient-specific medical images using volumetric resampling techniques. Since user input of some cutting points is the only requirement for generating the RPM, the developed software will be directly available for clinical use to preview surgical procedures and intraoperative workflow management without time-consuming setups or additional workloads...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227015/a-comparison-of-multimodal-biomarkers-for-chronic-hepatitis-b-assessment-using-recursive-feature-elimination
#7
Yanru Bai, Xin Chen, Changfeng Dong, Yingxia Liu, Zhiguo Zhang, Yanru Bai, Xin Chen, Changfeng Dong, Yingxia Liu, Zhiguo Zhang, Xin Chen, Changfeng Dong, Zhiguo Zhang, Yanru Bai, Yingxia Liu
An effective assessment of liver fibrosis in patients with chronic hepatitis B (CHB) is highly desired because it is important not only for clinical courses prediction, but also for the determination of antiviral therapy schemes. In recent years, various approaches for liver biopsies analysis have been highlighted, such as elastography techniques and serum markers, due to their properties of non-invasiveness. The aim of this study is to determine the best biomarkers or their combination by comparing multimodal biomarkers (ultrasound elastography parameters, biochemical hematologic parameters, and clinical parameters) for fibrosis assessment in chronic hepatitis B using a support vector machine combined with recursive feature elimination (RFE-SVM) approach...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226846/quantification-of-a-single-score-1-in-the-modified-ashworth-scale-mas-a-clinical-assessment-of-spasticity
#8
Jourdan K Ewoldt, Emily C Lazzaro, Elliot J Roth, Nina L Suresh, Jourdan K Ewoldt, Emily C Lazzaro, Elliot J Roth, Nina L Suresh, Emily C Lazzaro, Elliot J Roth, Jourdan K Ewoldt, Nina L Suresh
The Modified Ashworth Scale (MAS) is an assessment that is often used by clinicians to grade spasticity in the affected limbs of stroke survivors. The MAS is a function of the angle at which the clinician perceives a resistance to stretch and/or a `catch' during a passive joint rotation. The qualitative nature of the assessment in combination with the low resolution of the scale could result in varied grouping of spastic patients, even for a single score. The objective of this pilot study was to develop a method for the quantification of the MAS, which could provide greater resolution and could eventually guide better informed therapeutic interventions...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226801/electrocorticographic-signals-comparison-in-sensorimotor-cortex-between-contralateral-and-ipsilateral-hand-movements
#9
Yile Jin, Mingwei Lu, Xiaotian Wang, Shaomin Zhang, Junming Zhu, Xiaoxiang Zheng, Yile Jin, Mingwei Lu, Xiaotian Wang, Shaomin Zhang, Junming Zhu, Xiaoxiang Zheng
Brain machine interfaces (BMIs) have emerged as a technology to restore lost functionality in motor impaired patients. Most BMI systems employed neural signals from contralateral hemisphere. But many studies have also demonstrated the possibility to control hand movement using signals from ipsilateral one. However, the relationship of neural signals in sensorimotor cortex between contralateral and ipsilateral hand movement control is still unclear. In this study, the electrocorticographic signals (ECoG) of sensorimotor cortex were analyzed in two epilepsy participants when they performed a visual guided rock-scissors-paper task by using contralateral and ipsilateral hand respectively...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226730/rf-induced-energy-for-partially-implanted-catheters-a-computational-study
#10
Elena Lucano, Micaela Liberti, Tom Lloyd, Francesca Apollonio, Steve Wedan, Wolfgang Kainz, Leonardo M Angelone, Elena Lucano, Micaela Liberti, Tom Lloyd, Francesca Apollonio, Steve Wedan, Wolfgang Kainz, Leonardo M Angelone, Elena Lucano, Leonardo M Angelone, Tom Lloyd, Steve Wedan, Francesca Apollonio, Wolfgang Kainz, Micaela Liberti
Magnetic Resonance Imaging (MRI) is a radiological imaging technique widely used in clinical practice. MRI has been proposed to guide the catheters for interventional procedures, such as cardiac ablation. However, there are risks associated with this procedure, such as RF-induced heating of tissue near the catheters. The aim of this study is to develop a quantitative RF-safety method for patients with partially implanted leads at 64 MHz. RF-induced heating is related to the electric field incident along the catheter, which in turns depends on several variables, including the position of the RF feeding sources and the orientation of the polarization, which are however often unknown...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226729/passive-artifact-behavior-prediction-of-interventional-tools-in-high-field-mri-using-a-0-55t-portable-benchtop-mr-scanner
#11
H Abadi, J Krug, A Illanes, M Friebe, H Abadi, J Krug, A Illanes, M Friebe, J Krug, M Friebe, A Illanes, H Abadi
Using magnetic resonance imaging (MRI) for guiding minimally invasive interventions requires surgical devices which on one hand are visible in the MR image but on the other hand do not generate large artifacts, which distort the overall imaging process. Passive markers are one way to visualize devices such as catheters or biopsy needles in MRI. The evaluation of newly developed passive markers usually requires access to high-field MRI scanners (1.5 T and 3 T). This makes the practical evaluation time-consuming and expensive...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226711/computer-aided-planning-and-reconstruction-of-cranial-3d-implants
#12
Markus Gall, Xing Li, Xiaojun Chen, Dieter Schmalstieg, Jan Egger, Markus Gall, Xing Li, Xiaojun Chen, Dieter Schmalstieg, Jan Egger, Jan Egger, Markus Gall, Xing Li, Dieter Schmalstieg, Xiaojun Chen
In this contribution, a prototype for semiautomatic computer-aided planning and reconstruction of cranial 3D Implants is presented. The software prototype guides the user through the workflow, beginning with loading and mirroring the patient's head to obtain an initial curvature of the cranial implant. However, naïve mirroring is not sufficient for an implant, because human heads are in general too asymmetric. Thus, the user can perform Laplacian smoothing, followed by Delaunay triangulation, for generating an aesthetic looking and well-fitting implant...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226651/comparison-of-pulse-rate-variability-and-heart-rate-variability-for-high-frequency-content-estimation
#13
R Logier, J De Jonckheere, A Dassonneville, M Jeanne, R Logier, J De Jonckheere, A Dassonneville, M Jeanne, A Dassonneville, J De Jonckheere, R Logier, M Jeanne
Heart Rate Variability (HRV) analysis can be of precious help in most of clinical situations because it is able to quantify the Autonomic Nervous System (ANS) activity. The HRV high frequency (HF) content, related to the parasympathetic tone, reflects the ANS response to an external stimulus responsible of pain, stress or various emotions. We have previously developed the Analgesia Nociception Index (ANI), based on HRV high frequency content estimation, which quantifies continuously the vagal tone in order to guide analgesic drug administration during general anesthesia...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226633/autonomous-vision-guided-approach-for-the-analysis-and-grading-of-vertical-suspension-tests-during-hammersmith-infant-neurological-examination-hine
#14
Prasenjit Dey, Debi Prosad Dogra, Partha Pratim Roy, Harish Bhaskar, Prasenjit Dey, Debi Prosad Dogra, Partha Pratim Roy, Harish Bhaskar, Debi Prosad Dogra, Harish Bhaskar, Prasenjit Dey, Partha Pratim Roy
Computer vision assisted diagnostic systems are gaining popularity in different healthcare applications. This paper presents a video analysis and pattern recognition framework for the automatic grading of vertical suspension tests on infants during the Hammersmith Infant Neurological Examination (HINE). The proposed vision-guided pipeline applies a color-based skin region segmentation procedure followed by the localization of body parts before feature extraction and classification. After constrained localization of lower body parts, a stick-diagram representation is used for extracting novel features that correspond to the motion dynamic characteristics of the infant's leg movements during HINE...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226489/3d-printed-microfluidic-mixer-for-point-of-care-diagnosis-of-anemia
#15
Kimberly Plevniak, Matthew Campbell, Mei He, Kimberly Plevniak, Matthew Campbell, Mei He, Matthew Campbell, Mei He, Kimberly Plevniak
3D printing has been an emerging fabrication tool in prototyping and manufacturing. We demonstrated a 3D microfluidic simulation guided computer design and 3D printer prototyping for quick turnaround development of microfluidic 3D mixers, which allows fast self-mixing of reagents with blood through capillary force. Combined with smartphone, the point-of-care diagnosis of anemia from finger-prick blood has been successfully implemented and showed consistent results with clinical measurements. Capable of 3D fabrication flexibility and smartphone compatibility, this work presents a novel diagnostic strategy for advancing personalized medicine and mobile healthcare...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226453/spatial-characterization-of-innervation-zones-under-electrically-elicited-m-wave
#16
C Zhang, Y Peng, S Li, P Zhou, A Munoz, D Tang, Y Zhang, C Zhang, Y Peng, S Li, P Zhou, A Munoz, D Tang, Y Zhang, C Zhang, P Zhou, D Tang, Y Zhang, S Li, A Munoz, Y Peng
The three dimensional (3D) innervation zone (IZ) imaging approach (3DIZI) has been developed in our group to localize the IZ of a particular motor unit (MU) from its motor unit action potentials decomposed from high-density surface electromyography (EMG) recordings. In this study, the developed 3DIZI approach was combined with electrical stimulation to investigate global distributions of IZs in muscles from electrically elicited M-wave recordings. Electrical stimulations were applied to the musculocutaneous nerve to activate supramaximal muscle response of the biceps brachii in one healthy subject, and high-density (128 channels) surface EMG signals of the biceps brachii muscles were recorded...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226436/optimizing-rtms-treatment-of-a-balance-disorder-with-eeg-neural-synchrony-and-functional-connectivity
#17
Guofa Shou, Han Yuan, Diamond Urbano, Yoon-Hee Cha, Lei Ding, Guofa Shou, Han Yuan, Diamond Urbano, Yoon-Hee Cha, Lei Ding, Han Yuan, Yoon-Hee Cha, Diamond Urbano, Lei Ding, Guofa Shou
Repetitive transcranial magnetic stimulation (rTMS) has been increasingly used for its potential treatment effects across diverse mental disorders. However, the treatment effect is elusive and the rate of positive responders is not high, which make it in great demand of optimizing rTMS protocols to improve the treatment effects and the rate. In this regard, neural activity guided optimization has indicated great potential in several neuroimaging studies. In this paper, we present our ongoing work on optimizing rTMS treatment of a balance disorder, i...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226335/repeated-quantitative-urine-toxicology-analysis-may-improve-chronic-pain-patient-compliance-with-opioid-therapy
#18
Nebojsa Nick Knezevic, Omar M Khan, Afsaneh Beiranvand, Kenneth D Candido
BACKGROUND: Even though serious efforts have been undertaken by different medical societies to reduce opioid use for treating chronic benign pain, many Americans continue to seek pain relief through opioid consumption. Assuring compliance of these patients may be a difficult aspect of proper management even with regular behavioral monitoring. OBJECTIVE: The purpose of this study was to accurately assess the compliance of chronic opioid-consuming patients in an outpatient setting and evaluate if utilizing repeated urine drug testing (UDT) could improve compliance...
February 2017: Pain Physician
https://www.readbyqxmd.com/read/28226060/nonpharmacological-interventions-to-improve-quality-of-life-in-heart-failure-an-integrative-review
#19
Daniela Reuter do Amaral, Marina Bertelli Rossi, Camila Takao Lopes, Juliana de Lima Lopes
Objective: to identify articles that assessed the effectiveness or efficacy of nonpharmacological interventions to improve quality of life of people with heart failure in the literature. Method: an integrative literature review was performed in Lilacs, MedLine and SciELO databases, including randomized or nonrandomized clinical trials and quasi-experimental studies published between 2003 and 2014, in Portuguese, English or Spanish. Results: twenty-three studies were included...
January 2017: Revista Brasileira de Enfermagem
https://www.readbyqxmd.com/read/28225884/clinical-hypoxic-ischemic-encephalopathy-score-of-the-iberoamerican-society-of-neonatology-siben-a-new-proposal-for-diagnosis-and-management
#20
José Maria Rodriguez Perez, Sergio G Golombek, Augusto Sola
Hypoxic ischemic encephalopathy is a major complication of perinatal asphyxia, with high morbidity, mortality and neurologic sequelae as cerebral palsy, mostly in poor or developing countries. The difficulty in the diagnosis and management of newborns in these countries is astonishing, thus resulting in unreliable data on this pathology and bad outcomes regarding mortality and incidence of neurologic sequelae. The objective of this article is to present a new clinical diagnostic score to be started in the delivery room and to guide the therapeutic approach, in order to improve these results...
January 1, 2017: Revista da Associação Médica Brasileira
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