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https://www.readbyqxmd.com/read/27906470/retrospective-evaluation-of-whole-body-computed-tomography-for-tumor-staging-in-dogs-with-primary-appendicular-osteosarcoma
#1
Jessica L Talbott, Sarah E Boston, Rowan J Milner, Amandine Lejeune, Carlos H de M Souza, Kelvin Kow, Nicholas J Bacon, Jorge A Hernandez
OBJECTIVE: To evaluate whole body computed tomography (CT) for staging canine appendicular osteosarcoma. STUDY DESIGN: Retrospective case series. ANIMALS: Client-owned dogs diagnosed with appendicular osteosarcoma (n=39). METHODS: Medical records for client-owned dogs diagnosed with appendicular osteosarcoma from August 2008 to July 2014 were reviewed. Dogs were included if they had a confirmed diagnosis of appendicular osteosarcoma and were staged using whole body CT...
December 1, 2016: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/27906338/using-state-tomography-for-characterizing-input-principal-modes-in-optically-scattering-medium
#2
Jun Yang, Daniel A Nolan
We propose two new methods to measure principal modes, or Eisenbud-Wigner-Smith eigenstates in optically scattering medium. Both methods use similar techniques as in quantum state tomography, and are based on direct measurement of temporal delays. The first method requires N<sup>2</sup> different input launching conditions, and only the mean signal delay of these input states are needed to obtain full information of the principal modes. When the mode delay differences are large and all modes are non-degenerate, a second method can be used, which only requires 3N - 2 input launching conditions...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27906265/implementation-of-multidirectional-moir%C3%A3-computerized-tomography-multidirectional-affine-calibration
#3
Yang Song, Jia Wang, Ying Jin, Zhenyan Guo, Yunjing Ji, Anzhi He, Zhenhua Li
To realize three-dimensional (3D) instantaneous diagnoses for flow fields, many multidirectional optical computerized tomographic (optical CT) techniques based on laser interferometry have been proposed. Projections from different directions of these tomographic systems are captured simultaneously to reconstruct the test field. These projections are independent from each other. However, due to the inevitable errors from installation and difference between optical elements, projections will be imaged with different distortion and located at different positions on the sensors...
December 1, 2016: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/27906261/impact-of-nonstationary-optical-illumination-on-image-reconstruction-in-optoacoustic-tomography
#4
Yang Lou, Kun Wang, Alexander A Oraevsky, Mark A Anastasio
Optoacoustic tomography (OAT), also known as photoacoustic tomography, is a rapidly emerging hybrid imaging technique that possesses great potential for a wide range of biomedical imaging applications. In OAT, a laser is employed to illuminate the tissue of interest and acoustic signals are produced via the photoacoustic effect. From these data, an estimate of the distribution of the absorbed optical energy density within the tissue is reconstructed, referred to as the object function. This quantity is defined, in part, by the distribution of light fluence within the tissue that is established by the laser source...
December 1, 2016: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/27906223/axial-super-resolution-evanescent-wave-tomography
#5
Sarang Pendharker, Swapnali Shende, Ward Newman, Stephen Ogg, Neda Nazemifard, Zubin Jacob
Optical tomographic reconstruction of a three-dimensional (3D) nanoscale specimen is hindered by the axial diffraction limit, which is 2-3 times worse than the focal plane resolution. We propose and experimentally demonstrate an axial super-resolution evanescent wave tomography method that enables the use of regular evanescent wave microscopes like the total internal reflection fluorescence microscope beyond surface imaging and achieve a tomographic reconstruction with axial super-resolution. Our proposed method based on Fourier reconstruction achieves axial super-resolution by extracting information from multiple sets of 3D fluorescence images when the sample is illuminated by an evanescent wave...
December 1, 2016: Optics Letters
https://www.readbyqxmd.com/read/27906105/pancreatic-metastases-from-ocular-malignant-melanoma-the-use-of-endoscopic-ultrasound-guided-fine-needle-aspiration-to-establish-a-definitive-cytologic-diagnosis-a-case-report
#6
Diogo Turiani Hourneaux De Moura, Danielle Azevedo Chacon, Ryan Tanigawa, Martin Coronel, Spencer Cheng, Éverson L A Artifon, José Jukemura, Eduardo Guimarães Hourneaux De Moura
BACKGROUND: When encountering solid pancreatic lesions, nonpancreatic primary metastases are rare and differentiating a metastasis from a primary neoplastic lesion is challenging. The clinical presentation and radiologic features can be similar and the possibility of a pancreatic metastasis should be considered when the patient refers to a history of a different primary cancer. Endoscopic ultrasound offers a key anatomical advantage in accessing the pancreas and endoscopic ultrasound-guided fine-needle aspiration has become the gold standard method for diagnosing pancreatic lesions...
December 1, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27906089/esophageal-perforation-after-perioperative-transesophageal-echocardiography-a-case-report
#7
Hyun-Chang Kim, Jung-Hyou Oh, Yong-Cheol Lee
BACKGROUND: Transesophageal echocardiography is widely used in cardiac surgery. Transesophageal echocardiography probe insertion and manipulation can injure the esophagus. CASE PRESENTATION: A 76-year-old Asian man was admitted to our hospital for coronary artery bypass graft revascularization surgery. A right carotid endarterectomy was successfully performed 2 days before coronary artery bypass graft revascularization surgery. After the coronary artery bypass graft revascularization surgery was done successfully, postoperative computed tomography and esophagography revealed perforation of the middle esophagus...
December 1, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27906086/massive-adrenal-vein-aneurysm-mimicking-an-adrenal-tumor-in-a-patient-with-hemophilia-a-a-case-report-and-review-of-the-literature
#8
Richard Sleightholm, Steven Wahlmeier, Jeffrey S Carson, Andjela Drincic, Audrey Lazenby, Jason M Foster
BACKGROUND: Visceral venous aneurysms are exceedingly rare, and until now, there have been no reports of this phenomenon in the adrenal vasculature. This report details the first adrenal venous aneurysm reported in the literature. The aneurysm presented as an 18-cm mass that was initially suspected to be a hematoma or tumor on the basis of the complex medical history of the patient, which included hemophilia A and testicular cancer. After surgical excision, pathologic examination confirmed this mass to be a 15...
December 1, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27906070/subretinal-adipose-tissue-derived-mesenchymal-stem-cell-implantation-in-advanced-stage-retinitis-pigmentosa-a-phase-i-clinical-safety-study
#9
Ayse Oner, Z Burcin Gonen, Neslihan Sinim, Mustafa Cetin, Yusuf Ozkul
BACKGROUND: This prospective clinical case series aimed to investigate the safety of subretinal adipose tissue-derived mesenchymal stem cell (ADMSC) implantation in advanced stage retinitis pigmentosa (RP). METHODS: This study included 11 patients with end-stage RP who received subretinal implantation of ADMSCs. All patients had a total visual field defect and five of them only had light perception. The best corrected visual acuity (BCVA) in the study was 20/2000...
December 1, 2016: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27906036/complicated-acute-appendicitis-presenting-as-a-rapidly-progressive-soft-tissue-infection-of-the-abdominal-wall-a-case-report
#10
Corinne Beerle, Hans Gelpke, Stefan Breitenstein, Ralph F Staerkle
BACKGROUND: We report a case of a rare complication of acute appendicitis with perforation through the abdominal wall. The case points out that an intraabdominal origin should be considered in patients presenting with rapidly spreading soft tissue infections of the trunk. CASE PRESENTATION: A 58-year-old European woman presented to our hospital with a 1-week history of severe abdominal pain accompanied by rapidly spreading erythema and emphysema of the lower abdomen...
December 1, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27906021/video-assisted-thoracoscopic-surgery-for-adult-bochdalek-hernia-a-case-report
#11
Yu-Guang Shen, Na-Na Jiao, Wei Xiong, Quan Tang, Qing-Yong Cai, Gang Xu, Gui-You Liang
BACKGROUND: Bochdalek hernia is a type of congenital diaphragmatic hernia that typically presents in childhood, while this diseases is extremely rare in adults. CASE PRESENTATION: We review a case of a 63-year-old man with a left-sided Bochdalek hernia who was experiencing occasional pain at the left side of his chest for 8 months. The diagnosis of Bochdalek hernia was made by chest computed tomography. A part of the retroperitoneal adipose tissue was herniated into the left thoracic cavity through the diaphragmatic defect...
December 1, 2016: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/27905995/cdkn2b-methylation-is-associated-with-carotid-artery-calcification-in-ischemic-stroke-patients
#12
Shuyu Zhou, Yumeng Zhang, Li Wang, Zhizhong Zhang, Biyang Cai, Keting Liu, Hao Zhang, Minhui Dai, Lingli Sun, Xiaomeng Xu, Huan Cai, Xinfeng Liu, Guangming Lu, Gelin Xu
BACKGROUND: Cyclin-dependent kinase inhibitor 2A/2B (CDKN2A/2B) near chromosome 9p21 have been associated with both atherosclerosis and artery calcification, but the underlying mechanisms remained largely unknown. Considering that CDKN2A/2B is a frequently reported site for DNA methylation, this study aimed to evaluate whether carotid artery calcification (CarAC) is related to methylation levels of CDKN2A/2B in patients with ischemic stroke. METHODS: DNA methylation levels of CDKN2A/2B were measured in 322 ischemic stroke patients using peripheral blood leukocytes...
December 1, 2016: Journal of Translational Medicine
https://www.readbyqxmd.com/read/27905899/a-case-of-extragastrointestinal-stromal-tumor-complicated-by-severe-hypoglycemia-a-unique-presentation-of-a-rare-tumor
#13
Zeb Saeed, Solaema Taleb, Carmella Evans-Molina
BACKGROUND: Non-Islet Cell Tumor Hypoglycemia (NICTH) is a rare paraneoplastic cause of hypoglycemia arising from excess tumor production of insulin-like growth factor. The objective of this report is to describe an unusual case of Extragastrointestinal Stromal Tumor (EGIST) associated NICTH. CASE PRESENTATION: A 64 year-old African female was brought to the emergency room with a 1-month history of recurrent syncope, weight loss, and abdominal bloating. Serum blood glucose was discovered to 39 mg/dL, when insulin, proinsulin, and C-peptide were suppressed...
December 1, 2016: BMC Cancer
https://www.readbyqxmd.com/read/27905889/influence-of-posterior-corneal-astigmatism-on-postoperative-refractive-astigmatism-in-pseudophakic-eyes-after-cataract-surgery
#14
Maki Sano, Takahiro Hiraoka, Yuta Ueno, Hideo Itagaki, Tomohiro Ogami, Tetsuro Oshika
BACKGROUND: To examine the influence of posterior corneal astigmatism on postoperative refractive astigmatism in pseudophakic eyes after cataract surgery. METHODS: The study enrolled 64 pseudophakic eyes of 50 patients (71.8 ± 9.9 years old, mean ± standard deviation) who had undergone phacoemulsification with non-toric IOL implantation. Refractive astigmatism was measured using an auto ref-keratometer with a 0.01- diopter (D) scale. Two types of corneal astigmatism were calculated using anterior segment optical coherence tomography; keratometric and total corneal astigmatism...
December 1, 2016: BMC Ophthalmology
https://www.readbyqxmd.com/read/27905830/isolated-cardiac-peripheral-primitive-neuroectodermal-tumor-a-case-report
#15
Chengming Fan, Demiao Kong, Changming Tan, Jinfu Yang
BACKGROUND: Peripheral primitive neuroectodermal tumor isolated in the heart, presenting as a primary cardiac tumor is considered as extremely rare. METHODS: We present a 53-year-old Chinese female with a cardiac tumour which was discovered by computed tomography. RESULTS: A hypo-intense tumorous mass was shown extending from the left ventricle by Cardiac CT, and fused FDG positron emission tomography demonstrated no other abnormal FDG active lesions in the body...
December 1, 2016: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/27905531/a-indicator-of-visceral-adipose-dysfunction-to-evaluate-metabolic-health-in-adult-chinese
#16
Ming-Feng Xia, Ying Chen, Huan-Dong Lin, Hui Ma, Xiao-Ming Li, Qiqige Aleteng, Qian Li, Dan Wang, Yu Hu, Bai-Shen Pan, Xue-Jun Li, Xiao-Ying Li, Xin Gao
Visceral adipose dysfunction is a major cause of metabolic disorders. However, there is lack of a clinical index for prediction of visceral fat dysfunction in Asians. The present study aims to establish a visceral adiposity index for evaluation of metabolic health status in Chinese, the largest Asian ethnic group. 485 subjects were recruited from Lianqian Community, Xiamen and received abdominal computed tomography(CT) for visceral fat area. A Chinese visceral adiposity index (CVAI) was created using multivariate linear regression analyses, and was further validated in 6495 subjects recruited from Changfeng Community, Shanghai...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27905511/crystallizing-highly-likely-subspaces-that-contain-an-unknown-quantum-state-of-light
#17
Yong Siah Teo, Dmitri Mogilevtsev, Alexander Mikhalychev, Jaroslav Řeháček, Zdeněk Hradil
In continuous-variable tomography, with finite data and limited computation resources, reconstruction of a quantum state of light is performed on a finite-dimensional subspace. In principle, the data themselves encode all information about the relevant subspace that physically contains the state. We provide a straightforward and numerically feasible procedure to uniquely determine the appropriate reconstruction subspace by extracting this information directly from the data for any given unknown quantum state of light and measurement scheme...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27905347/an-interesting-case-of-angiogenesis-in-cavernous-hemangioma
#18
Dipankar Das, Kasturi Bhattacharjee, Panna Deka, Harsha Bhattacharjee, Diva Kant Misra, Akanksha Koul, Deepika Kapoor, Apurba Deka
Cavernous hemangioma is the most common orbital tumor in adult. There is lot of literatures for clinicopathological features of this tumor. These tumors had been studied for the model of angiogenesis in many of the experimental setups. We present a case of 34-year-old male with this tumor in the left eye with computerized tomography evidence. Postsurgical laboratory findings gave interesting evidence of tumor angiogenesis with tumor endothelial cells and sprouting of the small vessels endothelial cells. Podosome rosette could be conceptualized from the characteristic patterns seen in the tumor...
October 2016: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/27905341/heidenhain-variant-of-creutzfeldt-jakob-disease-in-a-patient-who-had-bovine-bioprosthetic-valve-implantation
#19
Jehard Hashoul, Waleed Saliba, Irina Bloch, Haneen Jabaly-Habib
Creutzfeldt-Jakob disease (CJD) is a rare neurodegenerative disorder characterized by rapidly progressing dementia, general neurologic deterioration, and death. When the leading symptoms are visual disturbances, it is termed as the Heidenhain variant of CJD (HvCJD). CJD was reported following prion-contaminated pericardium transplants but never after bovine bioprosthetic cardiac valve. In this case report, we describe HvCJD in a patient who had a bovine bioprosthetic cardiac valve implant. An 82-year-old-woman was referred to neuro-ophthalmology clinic for unexplained visual loss that started 1 month previously...
October 2016: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/27905337/choroidal-thickness-evaluation-of-healthy-eyes-central-serous-chorioretinopathy-and-fellow-eyes-using-spectral-domain-optical-coherence-tomography-in-indian-population
#20
Supriya Arora, Richa Pyare, Preethi Sridharan, Tarun Arora, Meenakshi Thakar, Basudeb Ghosh
AIM: The purpose of this study is to establish a normative database of subfoveal choroidal thickness (CT) in healthy young Indians using spectral domain optical coherence tomography (SD OCT). Evaluation and comparison of CT of central serous chorioretinopathy (CSC) and fellow eyes were also performed. MATERIALS AND METHODS: This was a prospective, cross-sectional, and observational study. It included 112 normal eyes of 112 healthy volunteers who had no evidence of ocular or systemic disease, 84 CSC eyes with acute, treatment-naïve CSC, and 69 fellow eyes with no evidence of neurosensory detachment or pigment epithelium detachment on SD OCT...
October 2016: Indian Journal of Ophthalmology
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