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https://www.readbyqxmd.com/read/28350720/pulmonary-embolism-mimicking-infectious-pleuritis
#1
Kenichi Tetsuhara, Satoshi Tsuji, Satoko Uematsu, Koichi Kamei
The diagnosis of pulmonary thromboembolism (PE) is often delayed because it is usually misdiagnosed as pneumonia or deep vein thrombosis. We report an unusual case of PE misdiagnosed as viral pleuritis on the first arrival at the emergency department (ED) in our hospital. A 14-year-old girl with no previous significant medical history was referred to the ED with pleuritic and chest pain with low-grade fever 4 days before admission.Echography showed a small amount of left pleural effusion. A 12-lead electrocardiogram was normal...
March 27, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28350676/comparison-of-the-outcomes-of-complex-orbital-fracture-repair-with-and-without-a-surgical-navigation-system-a-prospective-cohort-study-with-historical-controls
#2
Emanuele Zavattero, Guglielmo Ramieri, Fabio Roccia, Giovanni Gerbino
BACKGROUND: In severe orbital fractures, restoration of orbital shape and volume is required to avoid diplopia and posttraumatic enophthalmos. The purpose of this study was to compare outcomes between navigation-aided and conventional techniques for complex unilateral orbital fractures using titanium mesh. METHODS: The outcomes and the computed tomography-measured orbital volume of two groups of orbital complex unilateral reconstruction cases were compared. The study group consisted of a consecutive cohort of unilateral severe orbital fracture that underwent surgery with the aid of a Brainlab navigation system...
April 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28350556/resorbable-plates-prevent-regression-in-pediatric-mandibular-distraction-osteogenesis
#3
Brandon Kikuo Richland, Christopher Ellstrom, Asim Ahmad, Daniel Jaffurs
BACKGROUND: Mandibular distraction osteogenesis is an important technique to correct the pediatric hypoplastic mandible. Regression of the mandible after distraction continues to be a challenge, with some studies reporting up to 22% to 56% decrease toward predistraction length in the first year. We hypothesize that a resorbable plate placed after removal of the distractor will provide additional stability to newly formed bone, allowing further time for consolidation and minimizing regression...
March 27, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28350547/assessment-of-vectorial-total-variation-penalties-on-realistic-dual-energy-ct-data
#4
David S Rigie, Adrian A Sanchez, Patrick J La Rivière
Vectorial extensions of total variation have recently been developed for regularizing the reconstruction and denoising of multi-channel images, such as those arising in spectral computed tomography. Early studies have focused mainly on simulated, piecewise-constant images whose structure may favor total-variation penalties. In the current manuscript, we apply vectorial total variation to real dual-energy CT data of a whole turkey in order to determine if the same benefits can be observed in more complex images with anatomically realistic textures...
April 21, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28347131/preclinical-in-vivo-cancer-straightway-to-patients
#5
Marion de Jong, Stephen Mather, Theodosia Maina
Detection of useful cellular targets has strongly stimulated personalized tumor-targeted imaging and therapy approaches, also involving synthesis and evaluation of nuclear imaging probes with potential for clinical applications. Reviews of preclinical and translational studies concerning such probes, including radiolabeled antibodies, nanobodies, affibodies, peptides, small molecule inhibitors, and nanoparticles, are presented in this issue. As most tracers described in these articles have been developed for the field of cancer imaging and radionuclide therapy, the current article on preclinical studies will focus on cancer research as well...
June 2017: Quarterly Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28346962/response-to-comment-on-state-of-the-art-imaging-in-pulmonary-embolism-ventilation-perfusion-single-photon-emission-computed-tomography-versus-computed-tomography-angiography-controversies-results-and-recommendations-from-a-systematic-review
#6
https://www.readbyqxmd.com/read/28346656/7-year-follow-up-after-stereotactic-ablative-radiotherapy-for-patients-with-stage-i-non-small-cell-lung-cancer-results-of-a-phase-2-clinical-trial
#7
Bing Sun, Eric D Brooks, Ritsuko U Komaki, Zhongxing Liao, Melenda D Jeter, Mary F McAleer, Pamela K Allen, Peter A Balter, James D Welsh, Michael S O'Reilly, Daniel Gomez, Stephen M Hahn, Jack A Roth, Reza J Mehran, John V Heymach, Joe Y Chang
BACKGROUND: The authors evaluated the efficacy, patterns of failure, and toxicity of stereotactic ablative radiotherapy (SABR) for patients with medically inoperable, clinical stage I non-small cell lung cancer (NSCLC) in a prospective clinical trial with 7 years of follow-up. Clinical staging was performed according to the seventh edition of the American Joint Committee on Cancer TNM staging system. METHODS: Eligible patients with histologically confirmed NSCLC of clinical stage I as determined using positron emission tomography staging were treated with SABR (50 grays in 4 fractions)...
March 27, 2017: Cancer
https://www.readbyqxmd.com/read/28346530/quantification-of-left-coronary-bifurcation-angles-and-plaques-by-coronary-computed-tomography-angiography-for-prediction-of-significant-coronary-stenosis-a-preliminary-study-with-dual-source-ct
#8
Yue Cui, Wenjuan Zeng, Jie Yu, Jing Lu, Yuannan Hu, Nan Diao, Bo Liang, Ping Han, Heshui Shi
PURPOSE: To evaluate the diagnostic performance of left coronary bifurcation angles and plaque characteristics for prediction of coronary stenosis by dual-source CT. METHODS: 106 patients suspected of coronary artery disease undergoing both coronary computed tomography angiography (CCTA) and invasive coronary angiography (CAG) within three months were included. Left coronary bifurcation angles including the angles between the left anterior descending artery and left circumflex artery (LAD-LCx), left main coronary artery and left anterior descending artery (LM-LAD), left main coronary artery and left circumflex artery (LM-LCx) were measured on CT images...
2017: PloS One
https://www.readbyqxmd.com/read/28346329/cardiac-computed-tomography-radiomics-a-comprehensive-review-on-radiomic-techniques
#9
Márton Kolossváry, Miklós Kellermayer, Béla Merkely, Pál Maurovich-Horvat
Radiologic images are vast three-dimensional data sets in which each voxel of the underlying volume represents distinct physical measurements of a tissue-dependent characteristic. Advances in technology allow radiologists to image pathologies with unforeseen detail, thereby further increasing the amount of information to be processed. Even though the imaging modalities have advanced greatly, our interpretation of the images has remained essentially unchanged for decades. We have arrived in the era of precision medicine where even slight differences in disease manifestation are seen as potential target points for new intervention strategies...
March 24, 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28346325/clinical-judgment-is-not-reliable-for-reducing-whole-body-computed-tomography-scanning-after-isolated-high-energy-blunt-trauma
#10
Thomas Mistral, Vivien Brenckmann, Laurence Sanders, Jean-Luc Bosson, Gilbert Ferretti, Frederic Thony, Samuel M Galvagno, Jean-François Payen, Pierre Bouzat
BACKGROUND: The purpose of this study was to test the diagnostic performance of clinical judgment for the prediction of a significant injury with whole-body computed tomography scanning after high-energy trauma. METHODS: The authors conducted an observational prospective study in a single level-I trauma center. Adult patients were included if they had an isolated high-energy injury. Senior trauma leaders were asked to make a clinical judgment regarding the likelihood of a significant injury before performance of a whole-body computed tomography scan...
March 27, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28346292/bilateral-labyrinthine-and-internal-auditory-canal-enhancement-in-an-infant-with-severe-labyrinthine-dysplasia-a-previously-unreported-phenomenon
#11
Charles L Anzalone, Mai Lan Ho, Neil S Patel, Lisa A Schimmenti, Melissa D DeJong, Matthew L Carlson
OBJECTIVE: To describe a novel case of congenital profound bilateral sensorineural hearing loss in a patient with bilateral nodular internal auditory canal and labyrinthine enhancement and temporal bone dysplasia. PATIENTS: A 76-day-old female was referred to the authors' center for evaluation of congenital deafness. Behavioral observations and objective audiometric evaluation demonstrated bilateral profound sensorineural hearing loss and a comprehensive multidisciplinary evaluation identified compound heterozygous pathogenic variants in MYO7A, a gene associated with Usher Syndrome Type 1B or DFNB2...
March 24, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28346283/nonvisualized-sentinel-lymph-nodes-on-lymphoscintigraphy-in-melanoma-predictive-factors-and-surgical-outcomes
#12
Darryl Schuitevoerder, Lisa Grinlington, Jeffrey Stevens, Robert Nance, Jeanine Fortino, John T Vetto
PURPOSE: Preoperative lymphoscintigraphy is the standard for the identification of sentinel lymph nodes (SLNs) in melanoma. The impact of negative scintigraphy [nonvisualization (NV) of the SLN] on surgical outcomes is inadequately reported in the literature. The objectives of this study were to determine the incidence, predictive factors, and surgical outcomes of NV in clinically node-negative melanoma patients. PATIENTS AND METHODS: A retrospective review of a prospective, Institutional Review Board approved, melanoma sentinel node database from January 2005 to August 2015 was performed...
March 24, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28346008/wnt-%C3%AE-catenin-signaling-is-required-for-distraction-osteogenesis-in-rats
#13
Xuemei Wang, En Luo, Ruiye Bi, Bin Ye, Jing Hu, Shujuan Zou
OVERVIEW: The Wnt signaling pathway plays crucial roles in embryonic skeletal development and postnatal bone regeneration. However, mechanisms of Wnt signaling functioning in distraction osteogenesis (DO) haven't been well characterized. MATERIALS AND METHODS: We established a DO model using Sprague-Dawley rat tibia. And a Wnt signaling blocking agent, recombinant rat Dickkopf-related protein 1 (rrDkk1), was locally applied in the distracted gap to study the role of Wnt signaling during DO process...
March 1, 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/28345995/description-and-comparison-of-excretory-urography-performed-during-radiography-and-computed-tomography-for-evaluation-of-the-urinary-system-in-healthy-new-zealand-white-rabbits-oryctolagus-cuniculus
#14
Laura Vilalta, Raul Altuzarra, Yvonne Espada, Elisabet Dominguez, Rosa Novellas, Jaime Martorell
OBJECTIVE To evaluate the usefulness of excretory urography performed during radiography (REU) and CT (CTEU) in healthy rabbits, determine timings of urogram phases, and compare sensitivities of REU and CTEU for detection of these phases. ANIMALS 13 New Zealand White rabbits (Oryctolagus cuniculus). PROCEDURES Rabbits were screened for signs of systemic and urinary tract disease. An REU examination of each was performed, followed ≥ 5 days later by a CTEU examination. Contrast images from each modality were evaluated for quality of opacification and intervals between initiation of contrast medium administration and detection of various urogram phases...
April 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28345540/epidemiological-features-of-nontraumatic-spontaneous-subarachnoid-hemorrhage-in-china-a-nationwide-hospital-based-multicenter-study
#15
Jian-Ping Song, Wei Ni, Yu-Xiang Gu, Wei Zhu, Liang Chen, Bin Xu, Bin Leng, Yan-Long Tian, Ying Mao
BACKGROUND: Nontraumatic spontaneous subarachnoid hemorrhage (SAH) is associated with a high mortality. This study was conducted to investigate the epidemiological features of nontraumatic spontaneous SAH in China. METHODS: From January 2006 to December 2008, the clinical data of patients with nontraumatic SAH from 32 major neurosurgical centers of China were evaluated. Emergent digital subtraction angiography (DSA) was performed for the diagnosis of SAH sources in the acute stage of SAH (≤3 days)...
April 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28345519/anatomical-landmarks-for-maxillary-nerve-block-in-the-pterygopalatine-fossa-a-radiological-study
#16
S Carrier, B Castagneyrol, L Beylacq, K Nouette-Gaulain, M Montaudon, M Laurentjoye
INTRODUCTION: The aim of this study was to describe the anatomical landmarks for maxillary nerve block in the pterygopalatine fossa. The risk of injury to the skull base and maxillary artery was assessed. METHODS: This retrospective study was based on the analysis of 61 consecutive computed tomography angiographies obtained from patients suffering from different pathologies. Anatomical relationships between optic canal (OC), foramen rotundum (FR), inferior orbital fissure (IOF) and puncture point (PP) were assessed...
February 22, 2017: J Stomatol Oral Maxillofac Surg
https://www.readbyqxmd.com/read/28345449/fabrication-of-pcl-plga-bcp-porous-scaffold-for-bone-tissue-engineering-applications
#17
Nguyen Thi Hiep, Huynh Chan Khon, Nguyen Dai Hai, Lee-Byong Taek, Vo Van Toi, Le Thanh Hung
In this study, biomimic porous polycaprolactone/poly (lactide-co-glycolide) loading biphasic tricalcium phosphate (PCL/PLGA-BCP) scaffolds were fabricated successfully by solvent evaporation method. The distribution of biphasic tricalcium phosphate (BCP) in polycaprolactone/poly (lactide-co-glycolide) (PCL/PLGA) scaffold was confirmed by micro-computed tomography (micro-CT) scanning, scanning electron microscope (SEM) observation and Energy-dispersive X-ray Spectroscopy (EDS) analysis. The hydrophilicity of the scaffolds was confirmed by contact angle measurement...
March 26, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/28345421/clinical-features-and-prognosis-of-patients-with-acute-aortic-dissection-in-china
#18
Lujing Zhao, Yanfen Chai, Zhigang Li
Objective To evaluate the clinical features, risk factors, and prognostic significance of different Stanford types of acute aortic dissection (AAD). Methods We retrospectively analyzed the clinical data and prognostic predictors in 105 patients with AAD (37 with Stanford type A and 68 with Stanford type B) at Tianjin Medical University General Hospital and Tianjin 4th Central Hospital from January 2014 to November 2015. Results Patients with Marfan syndrome and bicuspid aortic valve constituted 24.3% and 8...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28345411/corrigendum-to-depth-dependent-glycosaminoglycan-concentration-in-articular-cartilage-by-quantitative-contrast-enhanced-micro-computed-tomography
#19
(no author information available yet)
Owing to the errors made by the authors, Mittelstaedt D and Xia Y, the following article contains error. Mittelstaedt D, Xia Y. Depth-Dependent Glycosaminoglycan Concentration in Articular Cartilage by Quantitative Contrast-Enhanced Micro-Computed Tomography. Cartilage. 2015;6:216-25. Original doi: 10.1177/1947603515596418.
April 2017: Cartilage
https://www.readbyqxmd.com/read/28345300/primary-intestinal-lymphangiectasia-multiple-detector-computed-tomography-findings-after-direct-lymphangiography
#20
Xiaoli Sun, Wenbin Shen, Xiaobai Chen, Tingguo Wen, Yongli Duan, Rengui Wang
INTRODUCTION: To analyse the findings of multiple detector computed tomography (MDCT) after direct lymphangiography in primary intestinal lymphangiectasia (PIL). METHODS: Fifty-five patients with PIL were retrospectively reviewed. All patients underwent MDCT after direct lymphangiography. The pathologies of 16 patients were confirmed by surgery and the remaining 39 patients were confirmed by gastroendoscopy and/or capsule endoscopy. RESULTS: After direct lymphangiography, MDCT found intra- and extraintestinal as well as lymphatic vessel abnormalities...
March 27, 2017: Journal of Medical Imaging and Radiation Oncology
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