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Vascular imaging

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https://www.readbyqxmd.com/read/29782425/increased-arterial-stiffness-in-a-cohort-of-pediatric-takayasu-arteritis-patients-in-toronto-adversely-affects-left-ventricular-mechanics
#1
Heynric B Grotenhuis, Florence A Aeschlimann, Wei Hui, Cameron Slorach, Rae S M Yeung, Susanne M Benseler, Timothy J Bradley, Lars Grosse-Wortmann
BACKGROUND/OBJECTIVE: Takayasu arteritis (TA) is characterized by extensive aortic, large and midsize arterial wall inflammation. The aim of this study was to assess the morphological and elastic properties of the aorta and large arteries and the impact on left ventricular (LV) mechanics in children with TA. METHODS: Seven pediatric TA patients (6 female patients, 13.8 ± 3.2 years) were assessed with magnetic resonance imaging, vascular ultrasound, applanation tonometry, and echocardiography from February 2015 until July 2017 and compared with 7 age- and sex-matched controls...
May 19, 2018: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/29782006/neurovascular-network-explorer-2-0-a-simple-tool-for-exploring-and-sharing-a-database-of-optogenetically-evoked-vasomotion-in-mouse-cortex-in-vivo
#2
Hana Uhlirova, Peifang Tian, Kıvılcım Kılıç, Martin Thunemann, Vishnu B Sridhar, Radim Chmelik, Hauke Bartsch, Anders M Dale, Anna Devor, Payam A Saisan
The importance of sharing experimental data in neuroscience grows with the amount and complexity of data acquired and various techniques used to obtain and process these data. However, the majority of experimental data, especially from individual studies of regular-sized laboratories never reach wider research community. A graphical user interface (GUI) engine called Neurovascular Network Explorer 2.0 (NNE 2.0) has been created as a tool for simple and low-cost sharing and exploring of vascular imaging data...
May 4, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29781675/axial-sesamoiditis-in-the-horse-a-review
#3
Christelle Le Roux, Ann Carstens
Axial sesamoiditis or osteitis of the proximal sesamoid bones (PSBs) in the horse is described as a rare condition. The cause remains unknown and speculative, with vascular, infectious, and traumatic aetiologies implicated. It is specifically associated with injury of the palmar or plantar ligament (PL), also known as the intersesamoidean ligament. Imaging findings are generally rewarding and radiological changes are typical, if not pathognomonic, for the condition. Lesions consist of bone lysis at the apical to mid-body axial margins of the PSBs, with variable degrees of joint effusion...
March 29, 2018: Journal of the South African Veterinary Association
https://www.readbyqxmd.com/read/29781576/ultrasonography-for-the-assessment-of-skin-in-systemic-sclerosis-a-systematic-review
#4
Tânia Santiago, Mariana Santiago, Barbara Ruaro, Maria João Salvador, Maurizio Cutolo, J A P da Silva
OBJECTIVE: To identify and synthesise the best available evidence on the use of ultrasound to assess skin involvement in systemic sclerosis (SSc). METHODS: We conducted a systemic review of the literature on Pubmed MEDLINE and Embase, using the vocabulary terms: ('systemic sclerosis OR scleroderma') AND ('ultrasonography' OR 'Elasticity Imaging Techniques') AND ('skin' OR 'dermis'). Two independent reviewers selected articles, collected data from studies and carried out a manual search of the references from the studies included...
May 21, 2018: Arthritis Care & Research
https://www.readbyqxmd.com/read/29781248/the-role-of-3d-printing-in-treating-craniomaxillofacial-congenital-anomalies
#5
REVIEW
Christopher D Lopez, Lukasz Witek, Andrea Torroni, Roberto L Flores, David B Demissie, Simon Young, Bruce N Cronstein, Paulo G Coelho
Craniomaxillofacial congenital anomalies comprise approximately one third of all congenital birth defects and include deformities such as alveolar clefts, craniosynostosis, and microtia. Current surgical treatments commonly require the use of autogenous graft material which are difficult to shape, limited in supply, associated with donor site morbidity and cannot grow with a maturing skeleton. Our group has demonstrated that 3D printed bio-ceramic scaffolds can generate vascularized bone within large, critical-sized defects (defects too large to heal spontaneously) of the craniomaxillofacial skeleton...
May 20, 2018: Birth Defects Research
https://www.readbyqxmd.com/read/29781171/fiber-based-fluorescence-lifetime-imaging-of-recellularization-processes-on-vascular-tissue-constructs
#6
Alba Alfonso-Garcia, Jeny Shklover, Benjamin E Sherlock, Alyssa Panitch, Leigh G Griffiths, Laura Marcu
New techniques able to monitor the maturation of tissue engineered constructs over time are needed for a more efficient control of developmental parameters. Here, a label-free fluorescence lifetime imaging (FLIm) approach implemented through a single fiber-optic interface is reported for non-destructive in situ assessment of vascular biomaterials. Recellularization processes of antigen removed bovine pericardium scaffolds with endothelial cells and mesenchymal stem cells were evaluated on the serous and the fibrous sides of the scaffolds, two distinct extracellular matrix niches, over the course of a 7 day culture period...
May 21, 2018: Journal of Biophotonics
https://www.readbyqxmd.com/read/29780954/severe-unilateral-abducens-nerve-palsy-from-cavernous-sinus-carotid-vascular-ectasia
#7
Sumeet Gupta, Brian Ellis, Alison Hixenbaugh, Dean Bonsall
Purpose: Carotid cavernous sinus ectasia is a rare cause of abducens nerve palsy. Observation: We present a case of severe unilateral progressive esotropia resulting from cavernous sinus carotid vascular ectasia in a 67 y/o female. She had progressive esotropia over the years with no neuroimaging despite having regular ophthalmic care. Magnetic resonance imaging determined the etiology of her chronic severe esotropia. Conclusion and importance: Carotid cavernous sinus ectasia should be considered in the differential of severe progressive unilateral abducens nerve palsy...
June 2018: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29780939/sixth-cranial-nerve-palsy-and-ipsilateral-trigeminal-neuralgia-caused-by-vertebrobasilar-dolichoectasia
#8
Thong Pham, Jeffrey Wesolowski, Jonathan D Trobe
Purpose: To report an unusual case of vertebrobasilar dolichoectasia causing both trigeminal neuralgia and ipsilateral sixth cranial nerve palsy. Observations: A patient had undergone surgical decompression of trigeminal neuralgia caused by dolichoectatic vertebral and basilar arteries years before presenting with ipsilateral sixth nerve palsy. Brain MRI showed deviant vertebrobasilar arteries that presumably now compressed the sixth cranial nerve. The unaffected left sixth cranial nerve was visible on MRI, but the affected right sixth cranial nerve was not...
June 2018: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29780930/morpho-functional-evaluation-of-torpedo-maculopathy-with-optical-coherence-tomography-angiography-and-microperimetry
#9
Gabriela Grimaldi, Andrea Scupola, Maria G Sammarco, Michele Marullo, Maria A Blasi
Purpose: To report the case of a 13-year-old girl with torpedo maculopathy, evaluated with multimodal morpho-functional retinal imaging, including fundus photography, infra-red and blue fundus autofluorescence, swept-source optical coherence tomography (OCT), en face OCT, OCT angiography and microperimetry (MP). Observations: On fundus examination, a torpedo-like hypopigmented lesion was observed temporal to the fovea in the left eye. OCT showed disruption of outer retinal layers and the presence of a subretinal cleft...
June 2018: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29780860/microbleeds-are-associated-with-depressive-symptoms-in-alzheimer-s-disease
#10
Anna E Leeuwis, Niels D Prins, Astrid M Hooghiemstra, Marije R Benedictus, Philip Scheltens, Frederik Barkhof, Wiesje M van der Flier
Introduction: Co-occurrence of cerebrovascular disease and depression led to the "vascular depression hypothesis". White matter hyperintensities (WMHs) have been associated with depressive symptoms in population-based studies. We studied the association between small vessel disease and depressive symptoms in a memory clinic population. Methods: We included >2000 patients with subjective cognitive decline (SCD), mild cognitive impairment, and Alzheimer's disease (AD)...
2018: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/29780644/spindle-cell-hemangioma-in-the-mucosa-of-the-upper-lip-a-case-report-and-review-of-the-literature
#11
Kazuhiro Murakami, Kazuhiko Yamamoto, Tsutomu Sugiura, Tadaaki Kirita
Spindle cell hemangioma (SCH) is a unique benign vascular lesion. We present a case of SCH in the upper lip of a 41-year-old woman. A submucosal nodular mass 30 × 20 mm in size was observed in the left upper lip. The mass developed 5 years earlier and enlarged after repeated ethanol injections. The mass was elastic firm, mobile, bluish in color, and well demarcated in magnetic resonance imaging. Under the clinical diagnosis of hemangioma, surgical excision was performed under local anesthesia. Microscopically, the lesion was composed of irregular cavernous spaces and multiple solid cellular areas...
2018: Case Reports in Dentistry
https://www.readbyqxmd.com/read/29780226/cerebral-border-zone-infarction-an-etiological-study
#12
Tarek Mohammed El-Gammal, Wafik Said Bahnasy, Osama Abd Allah Ragab, Ayman Mohammed Al-Malt
Background: Border zone infarcts (BZI) are ischemic lesions at the junction between two main arterial territories which may be either cortical or internal BZI. Methods: This study was conducted on 76 cerebral BZI patients and 20 healthy control subjects. Patients were divided to group I included 26 internal BZI, group II included 19 cortical BZI and group III included 21 mixed internal/cortical BZI patients. Included subjects were submitted to neurological examination, laboratory investigations, ECG, echocardiogram, brain CT and/or MRI and extra and intracranial blood vessels imaging by duplex and CT angiography...
2018: Egypt J Neurol Psychiatr Neurosurg
https://www.readbyqxmd.com/read/29780209/near-infrared-fluorescence-image-guidance-in-plastic-surgery-a-systematic-review
#13
REVIEW
Anouk J M Cornelissen, Tom J M van Mulken, Caitlin Graupner, Shan S Qiu, Xavier H A Keuter, René R W J van der Hulst, Rutger M Schols
Background: Near-infrared fluorescence (NIRF) imaging technique, after administration of contrast agents with fluorescent characteristics in the near-infrared (700-900 nm) range, is considered to possess great potential for the future of plastic surgery, given its capacity for perioperative, real-time anatomical guidance and identification. This study aimed to provide a comprehensive literature review concerning current and potential future applications of NIRF imaging in plastic surgery, thereby guiding future research...
2018: European Journal of Plastic Surgery
https://www.readbyqxmd.com/read/29779961/patient-satisfaction-with-the-consent-discussion-is-not-improved-by-showing-patients-their-computed-tomography-or-angiography-images-before-they-undergo-vascular-surgery
#14
Dominic LeBlanc, Adam H Power, Guy DeRose, Audra Duncan, Luc Dubois
OBJECTIVE: Patient-based decision aids and other multimedia tools have been developed to help enrich the preoperative discussion between surgeon and patient. Use of these tools, however, can be time-consuming and logistically challenging. We investigated whether simply showing patients their images from preoperative computed tomography (CT) or angiography would improve patients' satisfaction with the preoperative discussion. We also examined whether this improved the patient's understanding and trust and whether it contributed to increased preoperative anxiety...
May 18, 2018: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29779890/high-throughput-screening-enhances-kidney-organoid-differentiation-from-human-pluripotent-stem-cells-and-enables-automated-multidimensional-phenotyping
#15
Stefan M Czerniecki, Nelly M Cruz, Jennifer L Harder, Rajasree Menon, James Annis, Edgar A Otto, Ramila E Gulieva, Laura V Islas, Yong Kyun Kim, Linh M Tran, Timothy J Martins, Jeffrey W Pippin, Hongxia Fu, Matthias Kretzler, Stuart J Shankland, Jonathan Himmelfarb, Randall T Moon, Neal Paragas, Benjamin S Freedman
Organoids derived from human pluripotent stem cells are a potentially powerful tool for high-throughput screening (HTS), but the complexity of organoid cultures poses a significant challenge for miniaturization and automation. Here, we present a fully automated, HTS-compatible platform for enhanced differentiation and phenotyping of human kidney organoids. The entire 21-day protocol, from plating to differentiation to analysis, can be performed automatically by liquid-handling robots, or alternatively by manual pipetting...
May 15, 2018: Cell Stem Cell
https://www.readbyqxmd.com/read/29779393/a-new-method-for-visualizing-pulmonary-artery-microvasculature-using-synchrotron-radiation-pulmonary-microangiography-the-measurement-of-pulmonary-arterial-blood-flow-velocity-in-the-high-pulmonary-blood-flow-rat-model
#16
Chiho Tokunaga, Shonosuke Matsushita, Hiroaki Sakamoto, Kazuyuki Hyodo, Misao Kubota, Kenkichi Tanioka, Yuji Hiramatsu
Background Increased pulmonary blood flow (PBF) and shear stress may provoke irreversible vascular remodeling, yet invasive visualization of the microvasculature complicates monitoring. A non-invasive imaging methodology would therefore safely provide mechanistic insights into the progression of high PBF-induced vascular remodeling. Purpose To establish a novel microvasculature visualization method using synchrotron radiation pulmonary microangiography (SRPA) that can also calculate PBF velocity in vivo. Material and Methods A high PBF rat model was established by making a fistula between the abdominal aorta and inferior vena cava...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29779314/-impact-of-psoas-muscle-index-on-early-postoperative-mortality-and-complications-after-liver-transplantation
#17
J C Hou, H Zheng, Z Qiang, Y M Zhang, W T Jiang, W Gao, J Z Cai, J J Zhang, Z Y Shen
Objective: To investigate the relationship between psoas muscle index (PMI) and early postoperative survival rate and the incidence of complications after liver transplantation in adults. Methods: The clinical data of 225 patients (male, n =184; female, n =41) underwent liver transplantation at the Organ Transplantation Department of First Central Clinic Institute of Tianjin Medical University from January 2014 to December 2016 were analyzed, retrospectively.Original disease: hepatitis B liver cirrhosis(44 cases), hepatitis C cirrhosis(10 cases), autoimmune liver cirrhosis(29 cases), other benign liver diseases(24 cases), liver cirrhosis with liver cancer(116 cases), hilar cholangiocarcinoma(1 case) and hepatic vascular sarcoma(1 case)...
May 1, 2018: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/29779246/regulation-of-plasminogen-activation-on-cell-surfaces-and-fibrin
#18
REVIEW
Tetsumei Urano, Francis J Castellino, Yuko Suzuki
The fibrinolytic system dissolves fibrin and maintains vascular patency. Recent advances in imaging analyses allowed visualization of the spatiotemporal regulatory mechanism of fibrinolysis, as well as its regulation by other plasma haemostasis cofactors. Vascular endothelial cells (VECs) retain tissue-type plasminogen activator (tPA) after secretion and maintain high plasminogen (plg) activation potential on their surfaces. As in plasma, the serpin, plasminogen activator inhibitor type 1 (PAI-1), regulates fibrinolytic potential via inhibition of the VEC surface-bound plg activator, tPA...
May 20, 2018: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29779031/a-novel-ex-vivo-mouse-mesometrium-culture-model-for-investigating-angiogenesis-in-microvascular-networks
#19
Ariana D Suarez-Martinez, Susanne Bierschenk, Katie Huang, Dana Kaplan, Carolyn L Bayer, Stryder M Meadows, Markus Sperandio, Walter L Murfee
BACKGROUND: The development of models that incorporate intact microvascular networks enables the investigation of multicellular dynamics during angiogenesis. Our laboratory introduced the rat mesentery culture model as such a tool, which would be enhanced with mouse tissue. Since mouse mesentery is avascular, an alternative is mouse mesometrium, the connective tissue of uterine horns. The study's objective was to demonstrate that mouse mesometrium contains microvascular networks that can be cultured to investigate multicellular dynamics during angiogenesis...
May 18, 2018: Journal of Vascular Research
https://www.readbyqxmd.com/read/29778598/relevance-of-antiplatelet-therapy-duration-after-stent-assisted-coil-embolization-for-unruptured-intracranial-aneurysms
#20
Tackeun Kim, Chang Hyeun Kim, Si-Hyuck Kang, Seung Pil Ban, O-Ki Kwon
BACKGROUND: The optimal duration of dual antiplatelet therapy (DAPT) for preventing delayed thromboembolic events (DTEs) remains unclear. We aimed to determine whether longer DAPT provides improved protection against delayed DTEs. METHODS: This retrospective cohort study included 507 stent-assisted coil embolization procedures using a single stent for unruptured intracranial aneurysms. We performed coarsened exact matching according to the duration of maintenance DAPT...
May 17, 2018: World Neurosurgery
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