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https://www.readbyqxmd.com/read/28449311/reproducibility-of-the-international-endometrial-analysis-group-color-score-for-assigning-the-amount-of-flow-within-the-endometrium-using-stored-3-dimensional-volumes
#1
Juan Luis Alcázar, María Ángela Pascual, Silvia Ajossa, Cristina de Lorenzo, Alba Piras, Lourdes Hereter, Leire Juez, Paola Fabbri, Betlem Graupera, Stefano Guerriero
OBJECTIVES: To estimate intraobserver and interobserver reproducibility for assigning an International Endometrial Tumor Analysis (IETA) group color score for endometrial vascularization on color Doppler imaging. METHODS: Sixty-eight endometrial 3-dimensional volumes from endometrial color Doppler assessments of women with different endometrial disorders were evaluated by 8 different examiners (4 skilled examiners and 4 obstetric and gynecologic trainees). One skilled examiner who did not participate in the assessments selected the 68 volumes from a database to select a balanced number of each IETA score...
April 27, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28449168/mri-sequences-in-head-neck-radiology-state-of-the-art
#2
Gerlig Widmann, Benjamin Henninger, Christian Kremser, Werner Jaschke
Background Magnetic resonance imaging (MRI) has become an essential imaging modality for the evaluation of head & neck pathologies. However, the diagnostic power of MRI is strongly related to the appropriate selection and interpretation of imaging protocols and sequences. The aim of this article is to review state-of-the-art sequences for the clinical routine in head & neck MRI and to describe the evidence for which medical question these sequences and techniques are useful. Method Literature review of state-of-the-art sequences in head & neck MRI...
May 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28448235/intracranial-artery-steno-occlusion-diagnosis-by-using-three-dimensional-parallel-multichannel-transmission-mr-imaging
#3
Mi Sun Chung, Seung Chai Jung, Seon-Ok Kim, Ho Sung Kim, Choong Gon Choi, Sang Joon Kim, Sun U Kwon, Dong-Wha Kang, Jong S Kim
Purpose To determine whether magnetic resonance (MR) imaging by using two-dimensional spatially selective radiofrequency (RF) excitation pulses (zoomed MR imaging) is a reliable method for the diagnosis of intracranial artery steno-occlusion compared with full-field-of-view (FOV) MR imaging. Materials and Methods The institutional review board approved this retrospective study and informed consent was waived. From December 2014 to August 2015, 88 patients who underwent both full-FOV MR imaging and zoomed MR imaging for further evaluation of intracranial artery steno-occlusion at prior luminal evaluation were included...
April 27, 2017: Radiology
https://www.readbyqxmd.com/read/28448232/dynamic-contrast-enhanced-mr-imaging-parameters-in-bone-metastases-from-non-small-cell-lung-cancer-comparison-between-lesions-with-and-lesions-without-epidermal-growth-factor-receptor-mutation-in-primary-lung-cancer
#4
Hyun Su Kim, Young Cheol Yoon, Soyi Kwon, Ji Hyun Lee, Soohyun Ahn, Hyeon Seon Ahn
Purpose To compare dynamic contrast material-enhanced (DCE) magnetic resonance (MR) imaging parameters between metastatic bone lesions with and without the epidermal growth factor receptor (EGFR) mutation in consecutive patients with primary non-small cell lung cancer (NSCLC). Materials and Methods This study was approved by the institutional review board. Forty-seven patients with NSCLC and a confirmed EGFR mutation status (27 patients were positive and 26 were negative for EGFR mutation), who underwent DCE MR imaging for bone metastases between November 2012 and March 2016, were included in this study...
April 27, 2017: Radiology
https://www.readbyqxmd.com/read/28447985/methods-for-the-self-integration-of-megamolecular-biopolymers-on-the-drying-air-lc-interface
#5
Kosuke Okeyoshi, Kensuke Osada, Maiko K Okajima, Tatsuo Kaneko
Living organisms that use water are always prone to drying in the environment. Their activities are driven by biopolymer-based micro- and macro-structures, as seen in the cases of moving water in vascular bundles and moisturizing water in skin layers. In this study, we developed a method for assessing the effect of aqueous liquid crystalline (LC) solutions composed of biopolymers on drying. As LC biopolymers have megamolecular weight, we chose to study polysaccharides, cytoskeletal proteins, and DNA. The observation of biopolymer solutions during drying under polarized light reveals milliscale self-integration starting from the unstable air-LC interface...
April 7, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28446939/management-of-uterine-artery-pseudoaneurysm-advanced-ultrasonography-imaging-and-laparoscopic-surgery-as-an-alternative-method-to-angio-computed-tomography-and-transarterial-embolization
#6
Michał Ciebiera, Aneta Słabuszewska-Jóźwiak, Kornelia Zaręba, Grzegorz Jakiel
Uterine artery pseudoaneurysms (UAP) are rare but potentially life-threatening lesions. They may occur after traumatic deliveries, cesarean sections, and other interventions. We present a case of a 39-year-old woman with a UAP. The patient was accurately diagnosed using ultrasound imaging, with subsequent diagnostic hysteroscopy and laparoscopic excision of the UAP. In the present case, a ligation of the artery branch was performed to provide accurate hemostasis during UAP dissection. The vascular lesion was partially enucleated and removed, followed by recreation of the previous uterine shape...
2017: Wideochirurgia i Inne Techniki Mało Inwazyjne, Videosurgery and Other Miniinvasive Techniques
https://www.readbyqxmd.com/read/28446234/retinal-vessel-diameters-and-reactivity-in-diabetes-mellitus-and-or-cardiovascular-disease
#7
R Heitmar, G Y H Lip, R E Ryder, A D Blann
BACKGROUND: Retinal vessel calibre and vascular dilation/constriction in response to flicker light provocation may provide a measure distinguishing patients suffering from diabetes mellitus and/or cardiovascular disease. METHODS: One hundred and sixteen age and sex matched patients with diabetes mellitus (DM), cardiovascular disease (CVD) and both DM and CVD (DM + CVD) underwent systemic and intraocular pressure measurements. Retinal vessel calibres were assessed using a validated computer-based program to compute central retinal artery and vein equivalents (CRVE) from monochromatic retinal images...
April 26, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28445524/live-imaging-of-primary-ocular-vasculature-formation-in-zebrafish
#8
Tetsuya Hashiura, Eiji Kimura, Shizuko Fujisawa, Sayuri Oikawa, Shigenori Nonaka, Daijiro Kurosaka, Jiro Hitomi
Ocular vasculature consists of the central retinal and ciliary vascular systems, which are essential to maintaining visual function. Many researchers have attempted to determine their origins and development; however, the detailed, stepwise process of ocular vasculature formation has not been established. In zebrafish, two angioblast clusters, the rostral and midbrain organizing centers, form almost all of the cranial vasculature, including the ocular vasculature, and these are from where the cerebral arterial and venous angioblast clusters, respectively, differentiate...
2017: PloS One
https://www.readbyqxmd.com/read/28445365/improvement-of-flap-necrosis-in-a-rat-random-skin-flap-model-by-in-vivo-electroporation-mediated-hgf-gene-transfer
#9
S Morteza Seyed Jafari, Maziar Shafighi, Helmut Beltraminelli, Thomas Geiser, Robert E Hunger, Amiq Gazdhar
BACKGROUND: Despite great understanding of underlying mechanisms for flap necrosis and advances in surgical techniques, flap necrosis remains a critical issue. In the present study, the authors investigated the efficacy of electroporation-mediated hepatocyte growth factor (HGF) gene delivery to random dorsal skin flaps (McFarlane) to accelerate wound healing and reduce flap necrosis. METHODS: Fifteen male Wistar rats (290 to 320 g) were divided randomly into three groups...
May 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28444494/imaging-of-pancreatic-cystic-lesions-with-confocal-laser-endomicroscopy-an-ex-vivo-pilot-study
#10
Abdurrahman Kadayifci, Mustafa Atar, Michelle Yang, Carlos Fernandez-Del Castillo, Mari Mino-Kenudson, William R Brugge
BACKGROUND: The differential diagnosis of pancreatic cystic lesions (PCLs) is an increasingly common clinical challenge. Confocal laser endomicroscopy (CLE) may differentiate PCLs by imaging of the cyst wall. However, clinical experience is still limited, and better image definition and characterization of the cyst wall in a spectrum of cysts are needed. This experimental study aimed to expose detailed imaging characteristics of PCLs by CLE. METHODS: Patients who underwent surgery of a PCL were enrolled...
April 25, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28444460/hydrocephalus-a-rare-initial-manifestation-of-sporadic-intramedullary-hemangioblastoma-intramedullary-hemangioblastoma-presenting-as-hydrocephalus
#11
Barbara Albuquerque Morais, Daniel Dante Cardeal, Renan Ribeiro E Ribeiro, Fernando Pereira Frassetto, Fernanda Goncalves Andrade, Hamilton Matushita, Manoel Jacobsen Teixeira
BACKGROUND: Intramedullary hemangioblastomas are rare benign vascular tumors, infrequent in pediatric patients. Clinical symptoms vary according to the age of presentation, tumor size, location, and concomitant syringomyelia. This is the second reported case of hemangioblastoma presenting with acute hydrocephalus. CASE PRESENTATION: A 3-month-old infant with acute hydrocephalus was asymptomatic after a ventriculoperitoneal shunt was placed. She returned 3 months later with irritability, acute paraplegia, and respiratory distress...
April 25, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28443093/a-novel-cervical-spinal-cord-window-preparation-allows-for-two-photon-imaging-of-t-cell-interactions-with-the-cervical-spinal-cord-microvasculature-during-experimental-autoimmune-encephalomyelitis
#12
Neda Haghayegh Jahromi, Heidi Tardent, Gaby Enzmann, Urban Deutsch, Naoto Kawakami, Stefan Bittner, Dietmar Vestweber, Frauke Zipp, Jens V Stein, Britta Engelhardt
T-cell migration across the blood-brain barrier (BBB) is a crucial step in the pathogenesis of experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis (MS). Two-photon intravital microscopy (2P-IVM) has been established as a powerful tool to study cell-cell interactions in inflammatory EAE lesions in living animals. In EAE, central nervous system inflammation is strongly pronounced in the spinal cord, an organ in which 2P-IVM imaging is technically very challenging and has been limited to the lumbar spinal cord...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28442330/symptomatic-carotid-artery-disease-revascularization
#13
REVIEW
Piero Montorsi, Stefano Galli, Paolo M Ravagnani, Marco Roffi
Patients with symptomatic carotid artery disease should be managed by a multidisciplinary team including neurologists, vascular surgeons and interventionalists. Duplex ultrasound is the most widely used diagnostic modality to assess carotid disease, followed by additional imaging tests (CT- or MR-angiography) to confirm the severity of the stenosis, detect brain lesions, and assess intracranial circulation as well as the supra-aortic anatomy. Although overall randomized trial results favored (CEA) over carotid artery stenting (CAS) in symptomatic patients, this was likely related to the insufficient expertise of the endovascular specialists in several of the trials...
April 22, 2017: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/28441370/conventional-modalities-and-novel-emerging-imaging-techniques-for-musculoskeletal-tumors
#14
Meera Raghavan
BACKGROUND: Imaging of musculoskeletal tumors requires a multimodality approach and includes radiography, computed tomography (CT), and magnetic resonance imaging (MRI). METHODS: Topics related to primary bone and soft-tissue tumors are reviewed. The fundamental imaging principles are discussed as well as the applications of emerging imaging modalities. RESULTS: MRI is the preferred technique for the evaluation of musculoskeletal tumors, whereas other imaging modalities play a complementary role...
April 2017: Cancer Control: Journal of the Moffitt Cancer Center
https://www.readbyqxmd.com/read/28440736/levistilide-a-inhibits-angiogenesis-in-liver-fibrosis-via-vascular-endothelial-growth-factor-signaling-pathway
#15
Zhi-Min Zhao, Hong-Liang Liu, Xin Sun, Tao Guo, Li Shen, Yan-Yan Tao, Cheng-Hai Liu
Levistilide A (C24H28O4, molecular weight = 380.48) derived from Angelica sinensis (Danggui) has been reported to inhibit hepatic stellate cell proliferation. This study investigated the effects of levistilide A on liver fibrosis relating to angiogenesis, particularly on the characteristic change in liver sinusoidal endothelial cells. LX-2 cells were activated by TGF-β1, and the human hepatic sinusoidal endothelial cells (HHSECs) were induced by endothelial cell growth supplement. Cell viability was detected using a methylthiazoldiphenyl-tetrazolium bromide assay; F-actin was visualized through the fluorescence probe method; cell proliferation was examined using the EdU kit; antiangiogenesis activity was assessed using the tube formation assay and transgenic zebrafish model...
May 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28439973/intracardiac-versus-transesophageal-echocardiography-to-guide-transcatheter-closure-of-interatrial-communications-nationwide-trend-and-comparative-analysis
#16
Fahad Alqahtani, Ashwin Bhirud, Sami Aljohani, James Mills, Akram Kawsara, Ashok Runkana, Mohamad Alkhouli
OBJECTIVES: This study aimed to assess current temporal trends in utilization of ICE versus TEE guided closure of interatrial communications, and to compare periprocedural complications and resource utilization between the two imaging modalities. BACKGROUND: While transesophageal echocardiography (TEE) has historically been used to guide percutaneous structural heart interventions, intracardiac echocardiography (ICE) is being increasingly utilized to guide many of these procedures such as closure of interatrial communications...
April 25, 2017: Journal of Interventional Cardiology
https://www.readbyqxmd.com/read/28439650/gadoxetic-acid-disodium-enhanced-mr-imaging-of-cholangiolocellular-carcinoma-of-the-liver-imaging-characteristics-and-histopathological-correlations
#17
Hiroki Haradome, Toshiyuki Unno, Hiroyuki Morisaka, Yusuke Toda, Thomas C Kwee, Hiroshi Kondo, Keiji Sano, Tomoaki Ichikawa, Fukuo Kondo, Masahiko Sugitani, Tadatoshi Takayama
OBJECTIVES: To review the gadoxetic acid disodium (EOB)-enhanced magnetic resonance (MR) imaging features of cholangiolocellular carcinoma (CoCC) of the liver and compare them with those of hepatocellular carcinoma (HCC) and intrahepatic cholangiocarcinoma (ICC). METHODS: EOB-enhanced MR images of 19 patients with CoCC, 23 with ICC, and 51 with HCC were retrospectively evaluated qualitatively and quantitatively. Univariate and multivariate analyses were performed to determine the characteristic MR features of CoCC with histopathological-imaging correlation...
April 24, 2017: European Radiology
https://www.readbyqxmd.com/read/28439612/-imaging-of-the-paranasal-sinuses-and-anterior-skull-base
#18
S Greschus, F Albert, K W G Eichhorn
Due to the complex anatomy of the anterior skull base and paranasal sinuses, radiologic diagnostics in this area are challenging. Magnetic resonance imaging (MRI) and computed tomography (CT) are the primary indicated modalities. Guidelines helping to select the appropriate modality have been published by the German Society of Head and Neck Radiology and the Society of Otorhinolaryngology. The present article presents an overview of the current radiologic procedures and their optimized implementation using clinical examples...
April 21, 2017: HNO
https://www.readbyqxmd.com/read/28438704/folic-acid-decorated-polyamidoamine-dendrimer-exhibits-high-tumor-uptake-and-sustained-highly-localized-retention-in-solid-tumors-its-utility-for-local-sirna-delivery
#19
Leyuan Xu, W Andrew Yeudall, Hu Yang
The utility of folic acid (FA)-decorated polyamidoamine dendrimer G4 (G4-FA) as a vector was investigated for local delivery of siRNA. In a xenograft HN12 (or HN12-YFP) tumor mouse model of head and neck squamous cell carcinomas (HNSCC), intratumorally (i.t.) injected G4-FA exhibited high tumor uptake and sustained highly localized retention in the tumors according to near infrared (NIR) imaging assessment. siRNA against vascular endothelial growth factor A (siVEGFA) was chosen as a therapeutic modality. Compared to the nontherapeutic treatment groups (PBS solution or dendrimer complexed with nontherapeutic green fluorescent protein siRNA [siGFP]), G4-FA/siVEGFA showed tumor inhibition effects in single-dose and two-dose regimen studies...
April 21, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28438411/magnetic-resonance-imaging-of-the-digital-nerves-of-the-hand-anatomy-and-spectrum-of-pathology
#20
REVIEW
Charles H Mitchell, Laura M Fayad, Shivani Ahlawat
Digital nerves are intrinsic to the sensory and motor function of the hand. These nerves represent the terminal ramifications of the ulnar, median, and radial nerves and are located distal to the carpal tunnel and Guyon canal. With magnetic resonance imaging, traumatic and nontraumatic abnormalities of the digital nerves can be shown with high contrast as well as high spatial resolution. Digital nerve abnormalities are most commonly posttraumatic in nature; however, infection, inflammatory, vascular malformations, and neoplasms can rarely occur...
March 6, 2017: Current Problems in Diagnostic Radiology
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