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https://www.readbyqxmd.com/read/29330810/correlation-of-glioma-proliferation-and-hypoxia-by-luciferase-magnetic-resonance-and-positron-emission-tomography-imaging
#1
Michael Karsy, David L Gillespie, Kevin P Horn, Lance D Burrell, Jeffery T Yap, Randy L Jensen
Gliomas are the most common type of primary, malignant brain tumor and significantly impact patients, who have a median survival of ~1 year depending on mutational background. Novel imaging modalities such as luciferase bioluminescence, micro-magnetic resonance imaging (micro-MRI), micro-computerized tomography (micro-CT), and micro-positron emission tomography (micro-PET) have expanded the portfolio of tools available to study this disease. Hypoxia, a key oncogenic driver of glioma and mechanism of resistance, can be studied in vivo by the concomitant use of noninvasive MRI and PET imaging...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29324634/point-of-care-ultrasound-evaluation-of-severe-renal-trauma-in-an-adolescent
#2
Jeremy M Root, Alyssa Abo, Joanna Cohen
Traumatic renal injuries are more common in pediatrics because of the relatively larger size of the kidneys in the pediatric patient. Although computerized tomography remains the criterion standard for the initial evaluation of blunt renal trauma, there is evidence that renal ultrasound may serve a role in postinjury surveillance. Here, we present a case in which point-of-care ultrasound was used to image severe blunt renal trauma in a 17-year-old adolescent boy. In this case, point-of-care ultrasound identified severely distorted renal parenchyma after a grade 5 renal laceration was identified on computerized tomography scan...
January 11, 2018: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29324560/contrast-media-extravasations-in-patients-undergoing-computerized-tomography-scanning-a-systematic-review-and-meta-analysis-of-risk-factors-and-interventions
#3
Sandrine Ding, Nicole Richli Meystre, Cosmin Campeanu, Giuseppe Gullo
OBJECTIVE: To identify risk factors and interventions preventing or reducing contrast medium extravasation. INTRODUCTION: Computed tomography (CT) is a radiological examination essential for the diagnosis and monitoring of many diseases. It is often performed with the intravenous (IV) injection of contrast agents. Use of these products can result in a significant complication, extravasation, which is the accidental leakage of IV material into the surrounding tissue...
January 2018: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/29321967/teratoma-as-unusual-cause-of-chest-pain-hemoptysis-and-dyspnea-in-a-young-patient
#4
Irena Hammen, Achhe Lal Yadav
A 16-year-old girl presented with intermittent left chest pain and breathlessness on exertion for last 4 months with one episode of haemoptysis. There has been loss of appetite and weight loss of 4 kg over a period of 1 month. A chest radiograph revealed a large mass like opacity with pleural effusion in the left lung field. Computerized Tomography scanning (CT scanning) and Positron Emission Tomography/Computerized Tomography scanning (PET/CT scanning) demonstrated a 7 cm round, cystic lesion in the anterior mediastinum...
2018: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/29321191/mortality-after-magnetic-resonance-imaging-of-the-brain-in-patients-with-cardiovascular-implantable-devices
#5
Deepak Padmanabhan, Mary L Jondal, David O Hodge, Ramila A Mehta, Nancy G Acker, Connie M Dalzell, Suraj Kapa, Samuel J Asirvatham, Yong-Mei Cha, Joel P Felmlee, Robert E Watson, Paul A Friedman
BACKGROUND: Use of magnetic resonance imaging (MRI) brain is restricted in patients with cardiovascular implantable electronic devices (CIEDs). We proposed to determine whether mortality difference exists for patients with non-MRI-conditional CIEDs undergoing brain MRI compared with controls. METHODS AND RESULTS: Retrospective analysis of prospectively collected data was performed to compare all-cause mortality in patients with CIEDs undergoing brain MRI (CIED-MRI) with 3 control groups matched for age, sex, imaging year, and type of CIED: (1) no CIED, brain MRI (no-CIED-MRI); (2) CIED, brain computerized tomography (CT) scan (CIED-CT); and (3) no CIED, brain CT (no-CIED-CT)...
January 2018: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29318411/cyclophilin-a-increases-cd68-cell-infiltration-in-rat-experimental-periodontitis
#6
Lande Xue, Linwang Su, Li Zhao, Jianxia Li, Yi Du, Xijiao Yu
Cyclophilin A (CyPA) is a potent chemokine, which can directly induce leukocyte chemotaxis and contribute to the pathogenesis of inflammation-mediated diseases. This study is to observe the expression and distribution of CyPA and CD68+ cells in the histopathogenesis of rat ligation-induced experimental periodontitis, and assess the role of CyPA in CD68+ cell infiltration in rat experimental periodontitis. Experimental periodontitis was induced by ligation according to our previous method. CyPA expression in gingival tissues was detected by western blotting...
January 9, 2018: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29316547/o-arm-guided-percutaneous-radiofrequency-cordotomy
#7
Ido Strauss, Assaf Berger, Michal Arad, Uri Hochberg, Rotem Tellem
BACKGROUND: Pain is often one of the most debilitating symptoms in patients with advanced oncological disease. Patients with localized pain due to malignancy refractory to medical treatment can benefit from selective percutaneous cordotomy that disconnects the ascending pain fibers in the spinothalamic tract. OBJECTIVES: Over the past year, we have been performing percutaneous radiofrequency cordotomy with the use of the O-Arm intraoperative imaging system that allows both 2D fluoroscopy and 3D reconstructed computerized tomography imaging...
January 10, 2018: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/29312727/clinical-features-diagnosis-and-thoracoscopic-surgical-treatment-of-thymic-cysts
#8
Xun Wang, Kezhong Chen, Xiao Li, Yun Li, Fan Yang, Jianfeng Li, Guanchao Jiang, Jun Liu, Jun Wang
Background: Thymic cysts are rare benign developmental anomalies and there is no consensus management for thymic cysts. The aim of this study was to disclose the efficacy of perioperative diagnosis for thymic cysts by chest computerized tomography (CT) and to elucidate the surgical procedure by video-assisted thoracic surgery (VATS) in the management of thymic cysts. Methods: We retrospectively reviewed 108 consecutive thymic cyst patients who underwent VATS at our institution between April 2001 and August 2015...
December 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29308183/giant-mediastinal-mass-one-port-video-assisted-thoracoscopic-surgery
#9
Byron D Hughes, Ikenna C Okereke
A 45-year old man with intermittent dyspnea was found to have a large mediastinal mass on chest radiograph. Computerized tomography scan revealed a 14.7 cm anterior mediastinal mass with cystic and solid components. The patient underwent a thoracoscopic resection of the mass without complication. Techniques utilized during this surgery may be helpful in avoiding pitfalls for other surgeons.
September 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/29305684/an-extraaxially-localized-intrasellar-giant-hydatid-cyst-with-hypophyseal-insufficiency
#10
Gökhan Çavuş, Vedat Açik, Yeliz Çavuş, Emre Bilgin, Yurdal Gezercan, Ali Ihsan Ökten
PURPOSE: A hydatid cyst is a parasitic illness that is caused by the larvae of Echinococcus granulosus. Hydatid cysts occur in the liver in 75% and in the lungs in 15% of cases. Central nervous system involvement is rare (perhaps as low as 1%), and the majority of such cases are observed in children. Headache and vomiting are the most frequently observed symptoms. In patients diagnosed with a hydatid cyst, imaging methods and serologic tests are very important for identifying cranial involvement...
January 5, 2018: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29305199/quantitative-contour-analysis-as-an-image-based-discriminator-between-benign-and-malignant-renal-tumors
#11
Felix Y Yap, Darryl H Hwang, Steven Y Cen, Bino A Varghese, Bhushan Desai, Brian D Quinn, Megha Nayyar Gupta, Nieroshan Rajarubendra, Mihir M Desai, Manju Aron, Gangning Liang, Monish Aron, Inderbir S Gill, Vinay A Duddalwar
OBJECTIVES: To investigate whether morphologic analysis can differentiate benign versus malignant renal tumors on clinically acquired imaging. METHODS: Between 2009 and 2014, 3D tumor volumes were manually segmented from contrast-enhanced computerized tomography (CT) images from 150 patients with predominantly solid, non-macroscopic fat-containing renal tumors: 100 renal cell carcinomas (RCC) and 50 benign lesions (e.g. oncocytoma, lipid-poor angiomyolipoma). Tessellated 3D tumor models were created from segmented voxels using MATLAB code...
January 2, 2018: Urology
https://www.readbyqxmd.com/read/29304756/medical-treatment-of-an%C3%A2-unusual-cerebral-hydatid-disease
#12
Shu Chen, Ning Li, Feifei Yang, Jiqin Wu, Yuekai Hu, Shenglei Yu, Qi Chen, Xuan Wang, Xinyu Wang, Yuanyuan Liu, Jianming Zheng
BACKGROUND: Hydatid disease is a worldwide zoonosis produced by the larval stage of cestodes of the Echinococcus genus. Hydatid disease primarily involves the liver and lungs. The brain is involved in less than 2% of cases. Surgery has long been the only choice for the treatment, but chemotherapy has been successfully replaced surgery in some special cases. CASE PRESENTATION: We report a rare hydatid disease case which presented with multiple lesions in right frontal lobe, an uncommon site, and in the liver and lungs...
January 5, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29304428/approach-towards-the-porous-fibrous-structure-of-the-periodontal-ligament-using-micro-computerized-tomography-and-finite-element-analysis
#13
J Ortún-Terrazas, J Cegoñino, U Santana-Penín, U Santana-Mora, A Pérez Del Palomar
The periodontal ligament (PDL) is a porous and fibrous soft tissue situated around the tooth, which plays a key role in the transmission of loads from the tooth to the alveolar bone of the mandible. Although several studies have tried to characterize its mechanical properties, the behaviour of this tissue is not clear yet. In this study, a new simulation methodology based on a material model which considers the contribution of porous and fibrous structure with different material model formulations depending on the effort direction is proposed...
December 28, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29300907/a-6-year-follow-up-of-fracture-incidence-and-volumetric-bone-mineral-density-development-in-girls-with-turner-syndrome
#14
Ondrej Soucek, Eckhard Schönau, Jan Lebl, Johannes Willnecker, Zdenek Hlavka, Zdenek Sumnik
Context: Patients with Turner Syndrome (TS) are at risk of osteoporotic fractures. Objective: The aims of this study were to assess the incidence of clinically significant fractures in girls with TS and prospectively describe the development of volumetric bone mineral density (BMD). Design: Peripheral quantitative computerized tomography (pQCT) of the radius every other year over the 6 years of observation. Setting: Government funded university referral center...
December 28, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29300516/clinical-features-and-management-of-dacryops
#15
Cem Ozgonul, Yusuf Uysal, Onder Ayyildiz, Murat Kucukevcilioglu
PURPOSE: To describe clinical, imaging findings, and management of dacryops cases. METHODS: A retrospective chart review was performed to identify the patients diagnosed with dacryops over a 5-year period. The clinical features based on clinical findings, computerized tomography and ultrasonography, and observation and surgical excision results were noted when available. RESULTS: We included 14 eyes of 14 patients. Seven (50%) were men with a median age of 48 years...
January 4, 2018: Orbit
https://www.readbyqxmd.com/read/29298971/an-autopsy-case-of-mesenteric-panniculitis-with-massive-pleural-effusions
#16
Hiroshi Kobayashi, Kenji Notohara, Tadashi Otsuka, Yuka Kobayashi, Masuo Ujita, Yuuki Yoshioka, Naomasa Suzuki, Ryuji Aoyagi, Riuko Ohashi, Toshimitsu Suzuki
BACKGROUND Mesenteric panniculitis (MP) is an idiopathic chronic inflammatory condition of the mesentery. The main symptoms include abdominal pain, abdominal distention, weight loss, fever, nausea, and vomiting. The patients also present with chylous ascites in 14% of the cases and chylous pleural effusion (CPE) in very rare occasions. Despite the previous view of excellent prognosis of MP, two recent papers reported several fatal cases. However, there are still only a few autopsy case reports that describe the macroscopic and histological details of MP cases...
January 4, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29296931/bone-disease-in-monoclonal-gammopathy-of-undetermined-significance-results-from-a-screened-population-based-study
#17
Sigrun Thorsteinsdottir, Sigrun H Lund, Ebba K Lindqvist, Marianna Thordardottir, Gunnar Sigurdsson, Rene Costello, Debra Burton, Hlif Steingrimsdottir, Vilmundur Gudnason, Gudny Eiriksdottir, Kristin Siggeirsdottir, Tamara B Harris, Ola Landgren, Sigurdur Y Kristinsson
Previous studies have shown that individuals with monoclonal gammopathy of undetermined significance (MGUS) have an increased risk of fractures, although the underlying mechanisms remain unknown. Our aim was to analyze bone mineral density (BMD), bone volume, and risk of fractures among individuals with MGUS. We performed a screening using the Age, Gene/Environment Susceptibility (AGES)-Reykjavik Study cohort, consisting of 5764 elderly individuals, identifying 300 individuals with MGUS, and 275 with light-chain MGUS...
December 26, 2017: Blood Advances
https://www.readbyqxmd.com/read/29291177/maxillofacial-injuries-among-trauma-patients-undergoing-head-computerized-tomography-a-ugandan-experience
#18
Ullas Chandrika Krishnan, Rosemary Kusaba Byanyima, Ameda Faith, Adriane Kamulegeya
Aim: The aim of this study was to investigate epidemiological features of maxillofacial fractures within trauma patients who had head and neck computed tomography (CT) scan at the Mulago National referral hospital. Methods: CT scan records of trauma patients who had head scans at the Department of Radiology over 1-year period were accessed. Data collected included sociodemographic factors, type and etiology of injury, and concomitant maxillofacial injuries. Results: A total of 1330 trauma patients underwent head and neck CT scan in the 1-year study period...
October 2017: International Journal of Critical Illness and Injury Science
https://www.readbyqxmd.com/read/29289161/dual-scan-ct-image-recovery-from-truncated-projections
#19
Shubhabrata Sarkar, Pankaj Wahi, Prabhat Munshi
There are computerized tomography (CT) scanners available commercially for imaging small objects and they are often categorized as mini-CT X-ray machines. One major limitation of these machines is their inability to scan large objects with good image quality because of the truncation of projection data. An algorithm is proposed in this work which enables such machines to scan large objects while maintaining the quality of the recovered image.
December 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/29287657/plane-to-plane-analysis-of-mandibular-misalignment-in-patients-with-facial-asymmetry
#20
Tung-Yiu Wong, Jia-Kuang Liu, Tung-Chin Wu, Yi-Hsuan Tu, Ken-Chung Chen, Jing-Jing Fang, Ke-Hsin Cheng, Jing-Wei Lee
INTRODUCTION: Little is known regarding how the mandible rotates in facial asymmetry. The purpose of this study was to study mandibular misalignment with a new plane-to-plane analysis method in patients with facial asymmetry. METHODS: Optimal symmetry planes (OSPs) were generated by computing the greatest count of paired voxels on opposing sides of the computerized tomography image of the structure. The mandibular OSP was measured against the midfacial OSP for its alignment...
January 2018: American Journal of Orthodontics and Dentofacial Orthopedics
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