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https://www.readbyqxmd.com/read/28722337/validation-of-brain-derived-signals-in-near-infrared-spectroscopy-through-multivoxel-analysis-of-concurrent-functional-magnetic-resonance-imaging
#1
Yoshiya Moriguchi, Takamasa Noda, Kosei Nakayashiki, Yohei Takata, Shiori Setoyama, Shingo Kawasaki, Yoshihiko Kunisato, Kazuo Mishima, Kazuyuki Nakagome, Takashi Hanakawa
Near-infrared spectroscopy (NIRS) is a convenient and safe brain-mapping tool. However, its inevitable confounding with hemodynamic responses outside the brain, especially in the frontotemporal head, has questioned its validity. Some researchers attempted to validate NIRS signals through concurrent measurements with functional magnetic resonance imaging (fMRI), but, counterintuitively, NIRS signals rarely correlate with local fMRI signals in NIRS channels, although both mapping techniques should measure the same hemoglobin concentration...
July 19, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28719946/cell-assisted-lipotransfer-friend-or-foe-in-fat-grafting-systematic-review-and-meta-analysis
#2
REVIEW
J Laloze, A Varin, J Gilhodes, N Bertheuil, J L Grolleau, J Brie, J Usseglio, L Sensebe, T Filleron, B Chaput
BACKGROUND: Autologous fat grafting is a common procedure for soft-tissue reconstruction but is associated with a graft resorption rate ranging from 20% to 80%. To improve the fat graft survival rate, a new technique, called cell-assisted lipotransfer (CAL), was developed. With CAL, fat is injected along with adipose-derived stromal cells (ASCs) that are assumed to improve fat survival rate. We conducted an evidence-based meta-analysis to evaluate the efficacy and safety of CAL as compared with conventional autologous fat grafting (non-CAL)...
July 18, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28718733/diagnostic-utility-of-renal-fine-needle-aspirate-cytology-and-ultrasound-in-the-cat
#3
Camille A McAloney, Leslie C Sharkey, Daniel A Feeney, Davis M Seelig
Objectives The primary objective of this study was to retrospectively assess the diagnostic utility of feline renal fine-needle aspiration cytology by assessing diagnostic yield, cytologic characteristics and diagnostic accuracy. The secondary objective was to characterize ultrasonographic features of sampled kidneys to determine if they influenced diagnostic yield. Methods Slides, images and patient data were collected from the University of Minnesota Veterinary Medical Center database. Slides were designated as diagnostic or non-diagnostic...
July 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28717791/residual-root-preparation-%C3%A2-for-socket-shield-procedures-%C3%A2-a-facial-window-approach
#4
Phillip Roe, Joseph Y K Kan, Kitichai Rungcharassaeng
Two common complications that occur following immediate implant placement and provisionalization procedures in the anterior maxilla are changes to the facial periimplant soft tissue levels and the facial contours. To counteract these changes, different techniques and treatments have been recommended. The recently introduced socket-shield technique (SST) appears to be a viable treatment option for stabilizing the facial osseous and gingival architecture; however, preparation of the root fragment can present challenges...
2017: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/28717790/soft-and-hard-tissue-response-%C3%A2-to-an-implant-with-a-convergent-%C3%A2-collar-in-the-esthetic-area-%C3%A2-preliminary-report-at-18-months
#5
Luigi Canullo, Marco Tallarico, Guillermo Pradies, Fabio Marinotti, Ignazio Loi, Roberto Cocchetto
AIM: The purpose of this prospective cohort study was to investigate, over an 18-month period, soft and hard tissue response to a transmucosal implant with a convergent collar inserted in the anterior maxillary esthetic area. MATERIALS AND METHODS: From June 2013 to January 2014, 14 consecutive patients were enrolled (7 men and 7 women; mean age 63.7 ± 14 years) with 20 implants, needing at least one implant-supported restoration between the canines in the maxillary anterior esthetic area...
2017: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/28717624/ipsilateral-hamstring-tendon-graft-reconstruction-for-chronic-patellar-tendon-ruptures-surgical-technique
#6
Nicola Maffulli, Angelo Del Buono, Francesco Oliva
BACKGROUND: Patellar tendon chronic ruptures are more debated to manage that acute injuries as the patella tends to retract proximally (after 2 weeks), and surrounding soft tissues may make the repair more complicate. PURPOSE: We propose a novel technique in which the patellar tendon is reconstructed using ipsilateral hamstring tendons. This surgical procedure implies to drill a single tunnel through the patella and another through the tibia to reduce the risk of bony breakage...
January 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28717562/development-of-thin-skin-mimicking-bilayer-solid-tissue-phantoms-for-optical-spectroscopic-studies
#7
K Bala Nivetha, N Sujatha
In vivo spectroscopic measurements have the proven potential to provide important insight about the changes in tissue during the development of malignancies and thus help to diagnose tissue pathologies. Extraction of intrinsic data in the presence of varying amounts of scatterers and absorbers offers great challenges in the development of such techniques to the clinical level. Fabrication of optical phantoms, tailored to the biochemical as well as morphological features of the target tissue, can help to generate a spectral database for a given optical spectral measurement system...
July 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28717396/intraoperative-radiotherapy-review-of-techniques-and-results
#8
REVIEW
Avinash Pilar, Meetakshi Gupta, Sarbani Ghosh Laskar, Siddhartha Laskar
Intraoperative radiotherapy (IORT) is a technique that involves precise delivery of a large dose of ionising radiation to the tumour or tumour bed during surgery. Direct visualisation of the tumour bed and ability to space out the normal tissues from the tumour bed allows maximisation of the dose to the tumour while minimising the dose to normal tissues. This results in an improved therapeutic ratio with IORT. Although it was introduced in the 1960s, it has seen a resurgence of popularity with the introduction of self-shielding mobile linear accelerators and low-kV IORT devices, which by eliminating the logistical issues of transport of the patient during surgery for radiotherapy or building a shielded operating room, has enabled its wider use in the community...
2017: Ecancermedicalscience
https://www.readbyqxmd.com/read/28717344/biomaterials-for-4d-stem-cell-culture
#9
Amber M Hilderbrand, Elisa M Ovadia, Matthew S Rehmann, Prathamesh M Kharkar, Chen Guo, April M Kloxin
Stem cells reside in complex three-dimensional (3D) environments within the body that change with time, promoting various cellular functions and processes such as migration and differentiation. These complex changes in the surrounding environment dictate cell fate yet, until recently, have been challenging to mimic within cell culture systems. Hydrogel-based biomaterials are well suited to mimic aspects of these in vivo environments, owing to their high water content, soft tissue-like elasticity, and often-tunable biochemical content...
August 2016: Current Opinion in Solid State & Materials Science
https://www.readbyqxmd.com/read/28716936/bacterial-infection-imaging-with-18-f-fluoropropyl-trimethoprim
#10
Mark A Sellmyer, Iljung Lee, Catherine Hou, Chi-Chang Weng, Shihong Li, Brian P Lieberman, Chenbo Zeng, David A Mankoff, Robert H Mach
There is often overlap in the diagnostic features of common pathologic processes such as infection, sterile inflammation, and cancer both clinically and using conventional imaging techniques. Here, we report the development of a positron emission tomography probe for live bacterial infection based on the small-molecule antibiotic trimethoprim (TMP). [(18)F]fluoropropyl-trimethoprim, or [(18)F]FPTMP, shows a greater than 100-fold increased uptake in vitro in live bacteria (Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa) relative to controls...
July 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28716695/the-nugget-design-a-modified-segmental-gracilis-free-flap-for-small-sized-defect-reconstruction-on-the-lower-extremity
#11
M Tremp, C M Oranges, W J Wang, R Wettstein, Y X Zhang, D J Schaefer, D F Kalbermatten
BACKGROUND: Little attention has been given to the segmental free gracilis muscle flap supplied by secondary proximal pedicles. We introduce a technical refinement for small-sized three-dimensional defect reconstruction on the foot. METHODS: Between November 2013 and August 2016, three patients with a mean age of 66 years (range 47-70 years) were included. A segmental gracilis free flap supplied by the most proximal secondary pedicle was harvested according to a modified "nugget design" to treat small-sized defects on the lower extremity requiring dead space reconstruction...
July 8, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28715944/comparison-of-two-different-techniques-used-for-the-maintenance-ofperi-implant-soft-tissue-health-a-pilot-randomized-clinical-trial
#12
Logien Al Ghazal, Jeffery O'Sullivan, Noel Claffey, Ioannis Polyzois
OBJECTIVES: The aim of this pilot study was to compare the effectiveness of two different methods of debridement on maintaining and improving peri-implant soft tissue health over a period of 12 months. MATERIALS AND METHODS: Twenty adult patients (25 implants) were enrolled in a randomized, single-blinded, parallel group clinical trial. All implants included showed no signs of pathologic bone loss. Patients were scheduled to be reviewed every 3 months over a 12 months period...
July 17, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28713978/bone-marrow-mesenchymal-stem-cell%C3%A2-derived-extracellular-vesicles-improve-the-survival-of-transplanted-fat-grafts
#13
He Huang, Shaoqing Feng, Wenjie Zhang, Wei Li, Peng Xu, Xiangsheng Wang, Ai Ai
Autologous fat grafting is a promising surgical technique for soft tissue augmentation, reconstruction and rejuvenation. However, it is limited by the low survival rate of the transplanted fat, due to the slow revascularization of such grafts. Previous studies have demonstrated that bone marrow mesenchymal stem cell‑derived extracellular vesicles (BMSC‑EVs) are proangiogenic. The present study aimed to investigate whether BMSC‑EVs could improve the survival of transplanted fat grafts. Extracellular vesicles were isolated from the supernatant of cultured rat bone marrow mesenchymal stem cells, and characterized by flow cytometry and scanning electron microscopy...
July 14, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28713743/bone-ring-augmentation-around-immediate-implants-a-clinical-and-radiographic-study
#14
Girish B Giraddi, Aamir Malick Saifi
PURPOSE: The purpose of this study was to evaluate the efficacy of bone ring augmentation technique for three-dimensional augmentation of severely defective sockets along with placement of immediate dental implants. MATERIALS AND METHODS: A clinical study was conducted on 14 patients with 15 defective sockets requiring extractions and immediate implant placement. Following extraction, bone ring with an implant osteotomy, harvested from chin, was sculptured and fitted into the extraction socket...
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28713729/piezosurgery-versus-rotatory-osteotomy-in-mandibular-impacted-third-molar-extraction
#15
Bharat Bhati, Pankaj Kukreja, Sanjeev Kumar, Vidhi C Rathi, Kanika Singh, Shipra Bansal
AIM: The aim of this study is to compare piezoelectric surgery versus rotatory osteotomy technique in removal of mandibular impacted third molar. MATERIALS AND METHODS: Sample size of 30 patients 18 males, 12 females with a mean age of 27.43 ± 5.27. Bilateral extractions were required in all patients. All the patients were randomly allocated to two groups in one group, namely control group, surgical extraction of mandibular third molar was done using conventional rotatory osteotomy and in the other group, namely test group, extraction of lower third molar was done using Piezotome...
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28713528/the-double-transforaminal-lumbar-interbody-fusion-an-innovative-one-stage-surgical-technique-for-posterior-kyphosis-correction
#16
Marcus Jäger, Tjark Tassemeier
Posttraumatic deformities after vertebral fractures are challenging for orthopedic surgeons in the non-operative and operative field. Especially osteoporotic fractures may cause a hyperkyphosis resulting in segmental or global sagittal imbalance and chronic back pain. Different vertebral osteotomies are potent to restore sagittal profile but show a very high perioperative risk including neurological and soft tissue complications. In addition, some of these extensive operations require a two-step procedure including posterior and anterior approaches...
June 23, 2017: Orthopedic Reviews
https://www.readbyqxmd.com/read/28711438/citrobacter-freundii-bacteremia-risk-factors-of-mortality-and-prevalence-of-resistance-genes
#17
Li-Hsiang Liu, Nai-Yu Wang, Alice Ying-Jung Wu, Chih-Chen Lin, Chun-Ming Lee, Chang-Pan Liu
BACKGROUND/PURPOSE: Multidrug-resistant strains of Citrobacter have emerged, which carry Amp-C β-lactamase (Amp-C), broad-spectrum β-lactamase, extended-spectrum β-lactamase (ESBL), and other resistance mechanisms. These strains are associated with a higher rate of in-hospital mortality. The object of this study is to determine the mortality risk factors, susceptibility pattern to antibiotics, and prevalence of resistance genes in patients with Citrobacter freundii bacteremia. METHODS: From January 2009 to December 2014, blood isolates of C...
June 22, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28711236/temporal-bone-computed-tomography-findings-associated-with-feasibility-of-endoscopic-ear-surgery
#18
Dunia Abdul-Aziz, Elliott D Kozin, Brian M Lin, Kevin Wong, Parth V Shah, Aaron K Remenschneider, Lukas D Landegger, Amy F Juliano, Michael S Cohen, Daniel J Lee
PURPOSE: There are no formal radiologic criteria to stratify patients for transcanal (TEES) or transmastoid endoscopic ear surgery for resection of cholesteatoma. We aim to determine 1) whether standard preoperative computed tomography (CT) findings are associated with the need for conversion to a transmastoid approach and 2) the amount of time added for conversion from TEES to transmastoid techniques. MATERIALS AND METHODS: Retrospective chart review of consecutive pediatric and adult cases of TEES for primary cholesteatoma from 2013 through 2015 (n=52)...
June 14, 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/28711208/applications-of-dual-energy-computed-tomography-for-artifact-reduction-in-the-head-neck-and-spine
#19
REVIEW
Eric Liao, Ashok Srinivasan
Conventional computed tomography (CT) uses a polychromatic energy beam to offer superb anatomic detail of the head and spine. However, technical challenges remain that can degrade the diagnostic image quality of these examinations. Dual-energy CT analyzes the changes in attenuation of soft tissues at different energy levels, from which different reconstructions can be made to yield the optimal contrast-to-noise ratio, reduce beam-hardening artifact, or evaluate tissue composition. In this article, selective applications of the dual energy CT technique are discussed, highlighting a powerful tool in the diagnostic CT evaluation of the head, neck, and spine...
August 2017: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/28710670/management-of-proximal-humeral-fractures-by-the-ilizarov-external-fixator
#20
Mohammed Anter Meselhy, Mohamed Salah Singer
INTRODUCTION: External fixation can be performed in poor bone and soft tissue conditions, and can be used in patients with poor general conditions or multiple injuries as a rapid, mini-invasive procedure. The purpose of the current study was to evaluate the effectiveness and safety of the Ilizarov external fixator in the management of proximal humeral fractures. MATERIALS AND METHODS: Between May 2011 and December 2013, 14 patients with displaced proximal humeral fractures were enrolled in the current study...
July 14, 2017: Archives of Orthopaedic and Trauma Surgery
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