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https://www.readbyqxmd.com/read/29457120/spread-of-injectate-in-ultrasound-guided-serratus-plane-block-a-cadaveric-study
#1
Tatsuya Kunigo, Takeshi Murouchi, Shuji Yamamoto, Michiaki Yamakage
Background: Serratus plane block is a thoracic truncal block that has been proposed as alternatives for analgesia such as epidural anesthesia and paravertebral block for the anterolateral chest wall. Previously, we performed the clinical study about optimal volume of the local anesthetic in serratus plane block. The primary aim of this study was to assess the pattern of distribution of dye into the serratus plane of cadavers after ultrasound-guided serratus plane injection. Findings: Ultrasound-guided serratus plane injection was performed at the level of the fourth rib on the mid-axillary line in nine adult Thiel-embalmed cadavers...
2018: JA Clin Rep
https://www.readbyqxmd.com/read/29456892/under-the-armor-x-ray-computed-tomographic-reconstruction-of-the-internal-skeleton-of-coahomasuchus-chathamensis-archosauria-aetosauria-from-the-upper-triassic-of-north-carolina-usa-and-a-phylogenetic-analysis-of-aetosauria
#2
Devin K Hoffman, Andrew B Heckert, Lindsay E Zanno
Aetosauria is a clade of heavily armored, quadrupedal omnivorous to herbivorous archosaurs known from the Late Triassic across what was the supercontinent of Pangea. Their abundance in many deposits relative to the paucity of other Triassic herbivores indicates that they were key components of Late Triassic ecosystems. However, their evolutionary relationships remain contentious due, in large part, to their extensive dermal armor, which often obstructs observation of internal skeletal anatomy and limits access to potentially informative characters...
2018: PeerJ
https://www.readbyqxmd.com/read/29454644/testing-aggressive-behaviour-in-a-feeding-context-importance-of-ethologically-relevant-stimuli
#3
Daniel González, Péter Szenczi, Oxána Bánszegi, Robyn Hudson
The choice of stimuli used in tests of animal behaviour can have a critical effect on the outcome. Here we report two experiments showing how different foods influence aggressive behaviour in competition tests at weaning among littermates of the domestic cat. Whereas in Experiment 1 canned food elicited almost no overt competition, a piece of raw beef rib elicited clearly aggressive behaviour among littermates. In Experiment 2 the food stimuli were chosen to differ from raw beef rib in various combinations of taste/smell, texture and monopolizability...
February 15, 2018: Behavioural Processes
https://www.readbyqxmd.com/read/29454377/chronic-recurrent-multifocal-osteomyelitis-a-case-report
#4
Maria Francesca Gicchino, Mario Diplomatico, Carmela Granato, Daniela Capalbo, Pierluigi Marzuillo, Alma Nunzia Olivieri, Emanuele Miraglia Del Giudice
BACKGROUND: Chronic recurrent multifocal osteomyelitis (CRMO), also known as chronic nonbacterial osteomyelitis, is a rare, noninfectious inflammatory disorder that causes multifocal bone lesions with swelling and pain. Lytic and sclerotic bone lesions could be found on X-ray. Short tau inversion recovery magnetic resonance imaging (STIR MRI) shows bone marrow oedema, bone expansion, lytic areas and periosteal reaction. CRMO is characterized by periodic exacerbations and remissions of unclear/unknown pathogenesis...
February 17, 2018: Italian Journal of Pediatrics
https://www.readbyqxmd.com/read/29452868/chest-wall-dose-reduction-using-noncoplanar-volumetric-modulated-arc-radiation-therapy-for-lung-stereotactic-ablative-radiation-therapy
#5
Amy S Yu, Peter G Maxim, Billy W Loo, Michael F Gensheimer
PURPOSE: Stereotactic ablative radiation therapy (SABR) to lung tumors close to the chest wall can cause rib fractures or chest wall pain. We evaluated and propose a clinically practical solution of using noncoplanar volumetric modulated arc radiation therapy (VMAT) to reduce chest wall dose from lung SABR. METHODS AND MATERIALS: Twenty lung SABR VMAT plans in which the chest wall volume receiving 30 Gy or higher (V30) exceeded 30 mL were replanned by noncoplanar VMAT with opposite 15° couch kicks...
December 19, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/29452863/chest-wall-toxicity-after-hypofractionated-proton-beam-therapy-for-liver-malignancies
#6
Rosanna Yeung, Stephen R Bowen, Tobias R Chapman, Grayden T MacLennan, Smith Apisarnthanarax
PURPOSE: Normal liver-sparing with proton beam therapy (PBT) allows for dose escalation in the treatment of liver malignancies, but it may result in high doses to the chest wall (CW). CW toxicity (CWT) data after PBT for liver malignancies are limited, with most published reports describing toxicity after a combination of hypofractionated proton and photon radiation therapy. We examined the incidence and associated factors for CWT after hypofractionated PBT for liver malignancies. METHODS AND MATERIALS: We retrospectively reviewed the charts of 37 consecutive patients with liver malignancies (30 hepatocellular carcinoma, 6 intrahepatic cholangiocarcinoma, and 1 metastasis) treated with hypofractionated PBT...
December 24, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/29447441/design-factors-of-femur-fracture-fixation-plates-made-of-shape-memory-alloy-based-on-the-taguchi-method-by-finite-element-analysis
#7
Cheolwoong Ko, Mikyung Yang, Taemin Byun, Sang-Wook Lee
This study proposed a way to design femur fracture fixation plates made of shape memory alloy based on CT (Computed Tomography) images of Korean cadaveric femurs. To this end, 3 major design factors of femur fracture fixation plates (circumference angle, thickness, and inner diameter) were selected based on the contact pressure when a femur fracture fixation plate was applied to a cylinder model using the Taguchi Method. Then the effects of the design factors were analyzed. It was shown that the design factors were statistically significant at a level of p=0...
February 15, 2018: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/29447180/experimental-research-on-the-structural-instability-mechanism-and-the-effect-of-multi-echelon-support-of-deep-roadways-in-a-kilometre-deep-well
#8
Rui Peng, Xiangrui Meng, Guangming Zhao, Yingming Li, Jianming Zhu
We study the structural instability mechanism and effect of a multi-echelon support in very-deep roadways. We conduct a scale model test for analysing the structural failure mechanism and the effect of multi-echelon support of roadways under high horizontal stress. Mechanical bearing structures are classified according to their secondary stress distribution and the strength degradation of the surrounding rock after roadway excavation. A new method is proposed by partitioning the mechanical bearing structure of the surrounding rock into weak, key and main coupling bearing stratums...
2018: PloS One
https://www.readbyqxmd.com/read/29445489/prenatal-diagnosis-of-diaphanospondylodysostosis-dsd-a-case-report
#9
Cornelia Hofstaetter, Carolina Courage, Deborah Bartholdi, Saskia Biskup, Luigi Raio
We present a case of diaphanospondylodysostosis (DSD) which showed increased nuchal translucency at 1st trimester and missing ossification of the lower spine, short ribs with posterior gaps, and absent nasal bone in midtrimester. Autopsy revealed additionally bilateral nephroblastomatosis. Molecular genetic analysis showed a new mutation in the BMPER gene.
February 2018: Clinical Case Reports
https://www.readbyqxmd.com/read/29445296/the-ultrasound-guided-retrolaminar-block-volume-dependent-injectate-distribution
#10
Marija Damjanovska, Tatjana Stopar Pintaric, Erika Cvetko, Kamen Vlassakov
Purpose: The ultrasound-guided retrolaminar block is one of the newer and simpler alternatives to the traditional, often technically challenging, paravertebral (PV) block. Its feasibility, safety, and efficacy have already been clinically demonstrated in patients with multiple rib fractures using higher volumes of local anesthetic, when compared with the traditional approach. The primary aim of this observational anatomical study was to assess the spread of local anesthetic from the retrolaminar injection point to the PV space and its volume dependence...
2018: Journal of Pain Research
https://www.readbyqxmd.com/read/29444061/high-performance-on-chip-autocorrelator-using-a-rib-waveguide-loaded-with-two-photon-absorption-diodes
#11
Keisuke Kondo, Toshihiko Baba
We report an on-chip autocorrelator comprising a Si rib waveguide and two-photon-absorption photodiodes in which two pulses simultaneously propagate in opposite directions, and their correlation is acquired. The rib waveguide's broadband guiding mode and moderately low group index allow the device to operate over a wide wavelength range with high resolution. We confirm that the waveguide has a transmission band of at least 1300-1630 nm and observed correlation waveforms for pulses of the order of several hundred femtoseconds to several picoseconds, with a range of at least the entire C band region...
February 15, 2018: Optics Letters
https://www.readbyqxmd.com/read/29443816/effects-of-osteotomy-lengths-on-the-temperature-rise-of-the-crestal-bone-during-implant-site-preparation
#12
Zvonimir Katic, Tomislav Jukic, David Stubljar
AIM: To compare temperatures of the crestal bone during implant site preparation for different osteotomy lengths and implant systems. METHODS: Bovine ribs were used to simulate the cortical bone of the human mandible. Three different implant systems were tested: Astra Tech, Ankylos, and XiVE. Six drills per system were performed, meaning each drilling set was used for 2 drills per 3 osteotomy lengths (8, 12, and 16 mm). Drilling force, drilling speed, drilling length, and temperature were recorded...
February 13, 2018: Implant Dentistry
https://www.readbyqxmd.com/read/29441442/internal-patterned-injuries-in-trauma
#13
Lucia Tattoli, Michael Tsokos, Claas Buschmann
Patterned bruising of the internal organs is unusual. In these cases a cutaneous pattern of bruising is not observed but the underlying tissue may show unusual injuries that may even be recognizable as a tramline pattern. We report the suicide of a 23-year-old man by jumping off a bridge. At autopsy, an unusual finding was "tramline" bruising of the right liver lobe. The "blunt objects" that inflicted the bruising were determined to be the right ribs which were pushed against the liver capsule as a consequence of the extensive thoracic and vertebral trauma after a fall from a height with intermediate impact...
February 13, 2018: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/29441102/dosimetric-analysis-of-rib-interference-of-the-ctv-during-interstitial-brachytherapy-of-lung-tumors
#14
Bo Yang, Xiaoyang Sun, Haowen Pang, Xiangxiang Shi, Tao Tang, Guangpeng Zhang, Renjin Chen, Jing Zhang, Hong Wu, Sheng Lin, Qinglian Wen, Yunwei Han, Jingbo Wu
Purpose: In interstitial brachytherapy for lung tumors, the placement and alignment of the source needles are influenced by the ribs, which can affect the dose distribution. This study evaluated the change in dose to the target by comparing the dose between the actual interstitial brachytherapy plan (AIBP, what is deliverable due to anatomic constraints), and the virtual interstitial brachytherapy plan (VIBP, pretreatment-modified dose distribution). Material and methods: AIBPs and VIBPs were designed for 20 lung tumors...
December 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/29438212/maxillo-mandibular-reconstruction-in-pediatric-patients-how-to-do-it
#15
Valentino Valentini, Luigi Califano, Andrea Cassoni, Della Monaca Marco, Ingrid Raponi, Paolo Priore, Maria Teresa Fadda, Giovanni Dell'Aversana Orabona, Valentina Terenzi
Maxillo-mandibular reconstruction in pediatric patients involves particular functional and cosmetic implications. Attention is required for the craniofacial growth over time, involvement of the permanent dentition, facial symmetry, and donor site morbidity. Our aim is to identify the best reconstructive options for maxilla-mandibular defects in children (<18 years) based on our experience with 25 pediatric patients. We believe that reconstruction has to be performed at the same time as resection in pediatric patients...
February 12, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29436815/si-nanostrip-optical-waveguide-for-on-chip-broadband-molecular-overtone-spectroscopy-in-near-infrared
#16
Aviad Katiyi, Alina Karabchevsky
The ability to probe the molecular fundamental or overtones (high harmonics) vibrations is fundamental to modern healthcare monitoring techniques and sensing technologies since it provides an information about the molecular structure. However, since the absorption cross-section of molecular vibrations overtones is much smaller compared to the absorption cross-section of fundamental vibrations, their detection is challenging. Here, a silicon nanostrip rib waveguide structure is proposed for label-free on-chip overtone spectroscopy in near-infrared (NIR)...
February 13, 2018: ACS Sensors
https://www.readbyqxmd.com/read/29434908/extranodal-presentation-of-hodgkin-s-lymphoma-of-the-sternum-a-case-report-and-review-of-the-literature
#17
Yan Li, You Qin, Liduan Zheng, Hong Liu
Hodgkin's lymphoma (HL) is typically a systemic disease with involvement of the cervical, supraclavicular and mediastinal lymph nodes. An extra-nodal presentation of HL is unusual and seldom encountered in the clinic. The most common sites of presentation for extra-nodal extension are the spleen, liver, lungs, bones and marrow. The bones that are frequently involved are the vertebrae, pelvis, ribs and femur. Involvement of the sternum has occasionally been reported. The current study presents an unusual case on the extra-nodal presentation of HL of the sternum arising in a 25-year-old woman, and reviews the relevant literature with particular emphasis on treatment...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434794/biomechanical-analysis-of-brachial-plexus-injury-availability-of-three-dimensional-finite-element-model-of-the-brachial-plexus
#18
Atsushi Mihara, Tsukasa Kanchiku, Norihiro Nishida, Haruki Tagawa, Junji Ohgi, Hidenori Suzuki, Yasuaki Imajo, Masahiro Funaba, Daisuke Nakashima, Xian Chen, Toshihiko Taguchi
Adult brachial plexus injuries frequently lead to significant and permanent physical disabilities. Investigating the mechanism of the injury using biomechanical approaches may lead to further knowledge with regard to preventing brachial plexus injuries. However, there are no reports of biomechanical studies of brachial plexus injuries till date. Therefore, the present study used a complex three-dimensional finite element model (3D-FEM) of the brachial plexus to analyze the mechanism of brachial plexus injury and to assess the validity of the model...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29433996/gelatin-thoracic-paravertebral-teaching-model-for-placement-of-a-continuous-infusion-catheter-in-the-extrathoracic-paravertebral-space
#19
Shruti Sevak, Ashley Woodfin, Zachary Hothem, Rose Callahan, James Robbins, Kathryn Ziegler
OBJECTIVE: Our aim was to develop an ultrasound-guided training curriculum for continuous infusion catheter placement in the paravertebral space and to create a gelatin thoracic spine-rib model for use in this training. We sought to create a model that was inexpensive and reusable such that multiple participants could use one model during training. DESIGN: The model was prepared by embedding a firm foam thoracic spine replica with bilateral attached ribs into an opaque gelatin mixture...
February 9, 2018: Journal of Surgical Education
https://www.readbyqxmd.com/read/29433408/blunt-injury-of-the-innominate-artery-what-surprises-to-expect-a-case-report
#20
Marina Dias-Neto, José F Ramos, José F Teixeira
Injuries of the supra-aortic trunk after blunt chest trauma are rare. This is a case report of a blunt traumatic lesion of the innominate artery (IA) origin that exhibited aortic arch involvement with a focus on imaging and treatment. A 41-year-old fisherman presented an IA injury secondary to a high-impact blunt chest trauma. Upon physical examination, vital signs were stable and upper extremity pulses were present. In addition to several bone fractures (costal ribs, clavicle, scapula, temporal, maxillary, and sphenoid), computed tomography angiography revealed dissection/pseudoaneurysm of the IA sparing the bifurcation...
January 1, 2018: Vascular and Endovascular Surgery
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