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https://www.readbyqxmd.com/read/29677654/diagnosis-of-lumbar-spinal-fractures-in-emergency-department-low-dose-versus-standard-dose-ct-using-model-based-iterative-reconstruction
#1
Sun Hwa Lee, Seong Jong Yun, Hyeon Hwan Jo, Jae Gwang Song
PURPOSE: To compared the diagnostic performance of low-dose (LD) lumbar-spine (L-spine) CT with that of standard-dose (SD) L-spine CT. METHODS: Patients who underwent SD (n = 76) or LD (n = 68) L-spine CT using model-based iterative reconstruction were included. Two reviewers independently analyzed 10 anatomical regions on both CT scans. Also, suggested treatment decision between both CT scans was compared. RESULTS: LD L-spine CT showed an excellent diagnostic accuracy (98...
April 14, 2018: Clinical Imaging
https://www.readbyqxmd.com/read/29677642/diagnostic-value-of-18-f-fluordesoxyglucose-positron-emission-tomography-for-patients-with-brain-metastasis-from-unknown-primary-site
#2
Fabian Wolpert, Michael Weller, Anna Sophie Berghoff, Elisabeth Rushing, Lisa Michaela Füreder, Gregory Petyt, Henning Leske, Nicolaus Andratschke, Luca Regli, Marian Christoph Neidert, Roger Stupp, Rolf Stahel, Reinhard Dummer, Thomas Frauenfelder, Patrick Roth, Nicolas Reyns, Philipp Antonio Kaufmann, Matthias Preusser, Emilie Le Rhun
BACKGROUND: In 30% of patients with brain metastasis (BM), neurological symptoms are the first clinical manifestation of systemic malignancy, referred to as BM from cancer of unknown primary site (BM-CUPS). Here, we define the diagnostic value of 18 F-fluordesoxyglucose positron emission tomography (FDG-PET/CT) in the workup of BM-CUPS. METHODS: We screened 565 patients operated for BM at the University Hospital Zurich and identified 64 patients with BM-CUPS with data on both FDG-PET/CT and contrast-enhanced chest/abdomen computed tomography (CT) available at BM diagnosis...
April 17, 2018: European Journal of Cancer
https://www.readbyqxmd.com/read/29677593/lucky-or-clever-from-expectations-to-responsibility-judgments
#3
Tobias Gerstenberg, Tomer D Ullman, Jonas Nagel, Max Kleiman-Weiner, David A Lagnado, Joshua B Tenenbaum
How do people hold others responsible for the consequences of their actions? We propose a computational model that attributes responsibility as a function of what the observed action reveals about the person, and the causal role that the person's action played in bringing about the outcome. The model first infers what type of person someone is from having observed their action. It then compares a prior expectation of how a person would behave with a posterior expectation after having observed the person's action...
April 17, 2018: Cognition
https://www.readbyqxmd.com/read/29677350/validating-variational-bayes-linear-regression-method-with-multi-central-datasets
#4
Hiroshi Murata, Linda M Zangwill, Yuri Fujino, Masato Matsuura, Atsuya Miki, Kazunori Hirasawa, Masaki Tanito, Shiro Mizoue, Kazuhiko Mori, Katsuyoshi Suzuki, Takehiro Yamashita, Kenji Kashiwagi, Nobuyuki Shoji, Ryo Asaoka
Purpose: To validate the prediction accuracy of variational Bayes linear regression (VBLR) with two datasets external to the training dataset. Method: The training dataset consisted of 7268 eyes of 4278 subjects from the University of Tokyo Hospital. The Japanese Archive of Multicentral Databases in Glaucoma (JAMDIG) dataset consisted of 271 eyes of 177 patients, and the Diagnostic Innovations in Glaucoma Study (DIGS) dataset includes 248 eyes of 173 patients, which were used for validation...
April 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29676939/diffusion-kurtosis-imaging-in-the-differential-diagnosis-of-parotid-gland-disease-and-parotid-adenolymphoma-preliminary-results
#5
Shun Yu, Zhongshuai Zhang, Bao Qiang, S U Jiawei, Mengxiao Liu, Qinglei Shi, Wenchao Cai
PURPOSE: To study the value of diffusion kurtosis imaging (DKI) in diagnosis of parotid gland disease (PGD) with different pathological patterns and parotid adenolymphoma (PAL). METHODS: Fifty-seven patients with different kinds of PGD were enrolled and underwent DKI and conventional diffusion-weighted imaging (DWI). All patients were categorized into different groups according to their pathological patterns. The result of calculating the value of DKI-derived parameters (Kmean, Krad, Kax, Dmean, Drad, Dax, and FA) and apparent diffusion coefficient (ADC) of DWI were used to study their diagnostic accuracy in PGD with different pathological patterns...
April 20, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/29676860/diagnostic-performance-of-diffusion-weighted-imaging-for-differentiating-benign-and-malignant-gallbladder-lesions-a-systematic-review-and-meta-analysis
#6
Myung-Won You, Seong Jong Yun
BACKGROUND: Although diffusion-weighted imaging (DWI) has been characterized as an alternative imaging modality for gallbladder (GB) lesions, it has not been routinely used in clinical practice because of relatively low signal-to-noise ratio. PURPOSE: To assess the sensitivity and specificity of the diagnostic performance of DWI for differentiating benign and malignant GB lesions. STUDY TYPE: Meta-analysis. POPULATION: Patients with GB lesions...
April 20, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29676693/intraoperative-evaluation-of-local-cerebral-hemodynamic-change-by-indocyanine-green-videoangiography-prediction-of-incidence-and-duration-of-postoperative-transient-neurological-events-in-patients-with-moyamoya-disease
#7
Kenji Uda, Yoshio Araki, Shinsuke Muraoka, Shinji Ota, Kentaro Wada, Kinya Yokoyama, Masahiro Nishihori, Takashi Izumi, Sho Okamoto, Toshihiko Wakabayashi
OBJECTIVE Transient neurological events (TNEs) occur frequently in the acute phase after direct bypass surgery for moyamoya disease (MMD), but there is currently no way to predict them. FlowInsight is a specialized software for analyzing indocyanine green (ICG) videoangiography taken with a surgical microscope. The purpose of this study was to investigate whether intraoperative evaluation of local hemodynamic changes around anastomotic sites using FlowInsight could predict the incidence and duration of TNEs...
April 20, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29676618/cancer-risk-from-paediatric-computed-tomography-scanning-implications-for-radiation-protection-in-medicine
#8
A Kesminiene, E Cardis
The use of computed tomography (CT) imaging is clearly beneficial for millions of patients. However, the potential adverse health effects, particularly cancer, of ionising radiation exposure from CT early in life are an issue of growing concern in the radiological protection, medical, and public health communities. Although efforts to quantify these effects have been conducted, the precision and accuracy of reported risks needs confirmation. EPI-CT, a European collaborative epidemiological study, was set up to quantify risks from paediatric CT to optimise paediatric diagnostic protocol...
January 1, 2018: Annals of the ICRP
https://www.readbyqxmd.com/read/29676064/machine-learning-based-in-line-holographic-sensing-of-unstained-malaria-infected-rbcs
#9
Taesik Go, Jun Ho Kim, Hyeokjun Byeon, Sang Joon Lee
Accurate and immediate diagnosis of malaria is important for medication of the infectious disease. Conventional methods for diagnosing malaria are time consuming and rely on the skill of experts. Therefore, an automatic and simple diagnostic modality is essential for healthcare in developing countries that lack the expertise of trained microscopists. In the present study, a new automatic sensing method using digital in-line holographic microscopy (DIHM) combined with machine learning algorithms was proposed to sensitively detect unstained malaria-infected red blood cells (RBCs)...
April 19, 2018: Journal of Biophotonics
https://www.readbyqxmd.com/read/29675097/diagnostic-accuracy-of-inflammatory-markers-for-distinguishing-malignant-and-benign-ovarian-masses
#10
Wan Kyu Eo, Ki Hyung Kim, Eun Joo Park, Heung Yeol Kim, Hong-Bae Kim, Suk Bong Koh, Jeong Namkung
Objective : To evaluate the role of inflammatory markers for distinguishing malignant and benign ovarian masses. Methods : Preoperative demographic, clinicopathologic, and laboratory variables were reviewed in patients with an ovarian mass that was subsequently diagnosed as either epithelial ovarian cancer (EOC) or a benign ovarian mass on histologic analysis. The differences between variables of the two groups were further evaluated. Logistic regression analysis was applied to evaluate variables to predict the presence of EOC...
2018: Journal of Cancer
https://www.readbyqxmd.com/read/29674818/efficacy-of-denoising-and-enhancement-filters-for-detection-of-approximal-and-occlusal-caries-on-digital-intraoral-radiographs
#11
Abbas Shokri, Shahin Kasraei, Sima Lari, Majid Mahmoodzadeh, Amin Khaleghi, Saeid Musavi, Vahid Akheshteh
Background and Objectives: Image processing and enhancement filters can significantly improve the diagnostic value of digital radiographs. Evidence shows that increasing the contrast and filtering improve the diagnostic accuracy for caries detection. This study sought to assess the diagnostic accuracy of original and enhanced digital radiographs for the detection of approximal and occlusal caries. Subjects and Methods: In this experimental study, incipient carious lesions were artificially created on 120 proximal and occlusal surfaces of human extracted permanent molar and premolar teeth...
March 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29674411/sequential-apparent-diffusion-coefficient-for-assessment-of-tumor-progression-in-patients-with-low-grade-glioma
#12
I E Chen, N Swinburne, N M Tsankova, M M Hefti, A Aggarwal, A H Doshi, A Hormigo, B N Delman, K Nael
BACKGROUND AND PURPOSE: Early and accurate identification of tumor progression in patients with low-grade gliomas is challenging. We aimed to assess the role of quantitative ADC analysis in the sequential follow-up of patients with low-grade gliomas as a potential imaging marker of tumor stability or progression. MATERIALS AND METHODS: In this retrospective study, patients with a diagnosis of low-grade glioma with at least 12 months of imaging follow-up were retrospectively reviewed...
April 19, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29674385/bet-2-blood-biomarkers-as-an-alternative-to-imaging-in-diagnosing-acute-ischaemic-stroke
#13
Jessica Jane, Ronson Lo, Colin A Graham
A short-cut review was carried out to establish the diagnostic accuracy of blood biomarkers as an alternative to imaging for the diagnosis of ischaemic stroke. Nine studies were directly relevant to the question. The author, date and country of publication, patient group studied, study type, relevant outcomes, results and study weaknesses of these papers are tabulated. The clinical bottom line is that that blood biomarkers are currently not suitable for the diagnosis of acute ischaemic stroke.
May 2018: Emergency Medicine Journal: EMJ
https://www.readbyqxmd.com/read/29674383/bet-1-can-salter-harris-type-i-fractures-be-diagnosed-by-ultrasound
#14
Erica Beatty, Patrick Archambault
A short-cut review was carried out to establish the diagnostic accuracy of ultrasound for Salter-Harris type 1 fractures. Three studies were directly relevant to the question. The author, date and country of publication, patient group studied, study type, relevant outcomes, results and study weaknesses of these papers are tabulated. The clinical bottom line is that ultrasound may allow visualisation of Salter-Harris type 1 fractures. However, little is known as to its sensitivity and specificity, and therefore it cannot be used to eliminate the diagnosis...
May 2018: Emergency Medicine Journal: EMJ
https://www.readbyqxmd.com/read/29674128/diagnostic-value-of-cerebrospinal-fluid-cxcl13-for-acute-lyme-neuroborreliosis-a-systemic-review-and-meta-analysis
#15
REVIEW
Tobias Armin Rupprecht, Kirsi Marjaana Manz, Volker Fingerle, Christian Lechner, Matthias Klein, Markus Pfirrmann, Uwe Koedel
OBJECTIVES: The utility of cerebrospinal fluid (CSF) CXCL13 for diagnosis of acute Lyme neuroborreliosis (LNB) has been debated and the test is not yet routinely performed. This study's aim was to evaluate its overall diagnostic accuracy through meta-analysis. METHODS: Electronic searches in PubMed MEDLINE and Web of Science were performed to identify relevant articles published before January 2018. A summary receiver operating characteristic curve and an optimal cut-off were estimated modeling multiple cut-offs...
April 16, 2018: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29674069/intensely-red-emitting-luminescent-upconversion-nanoparticles-for-deep-tissue-multimodal-bioimaging
#16
Hongling Deng, Sa Huang, Chen Xu
Nowadays, in order to improve the diagnostic accuracy of the disease, more and more contrast agents have been applied in the clinical imaging modalities. A combination of nanotechnology with optical, computed X-ray tomography (CT), and magnetic resonance imaging (MRI) has great potential to improve disease diagnosis and therapy. Herein, we developed a novel multimodal contrast agent for deep-tissue bioimaging based on PEGylated Mn2+ doped NaLuF4 :Yb/Er nanoparticles (PEG-UCNPs). The multimodal nanoprobes have revealed the intensely red upconversion luminescence emission for deep-tissue upconversion luminescence (UCL) imaging...
July 1, 2018: Talanta
https://www.readbyqxmd.com/read/29673894/anisotropy-of-anomalous-diffusion-improves-the-accuracy-of-differentiating-low-and-high-grade-cerebral-gliomas
#17
Boyan Xu, Lu Su, Zhenxiong Wang, Yang Fan, Gaolang Gong, Wenzhen Zhu, Peiyi Gao, Jia-Hong Gao
BACKGROUND: Anomalous diffusion model has been introduced and shown to be beneficial in clinical applications. However, only the directionally averaged values of anomalous diffusion parameters were investigated, and the anisotropy of anomalous diffusion remains unexplored. The aim of this study was to demonstrate the feasibility of using anisotropy of anomalous diffusion for differentiating low- and high-grade cerebral gliomas. METHODS: Diffusion MRI images were acquired from brain tumor patients and analyzed using the fractional motion (FM) model...
April 16, 2018: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29673821/diagnostic-accuracy-of-a-confocal-laser-endomicroscope-for-in-vivo-differentiation-between-normal-and-tumor-tissue-during-fluorescein-guided-glioma-resection-laboratory-investigation
#18
Evgenii Belykh, Eric J Miller, Arpan A Patel, Mohammedhassan Izady Yazdanabadi, Nikolay L Martirosyan, Kaan Yağmurlu, Baran Bozkurt, Vadim A Byvaltsev, Jennifer M Eschbacher, Peter Nakaji, Mark C Preul
OBJECTIVE: Glioma resection with fluorescein sodium (FNa) guidance has a potential drawback of nonspecific leakage of FNa from non-tumor areas with a compromised blood-brain barrier. We investigated the diagnostic accuracy of in vivo confocal laser endomicroscopy (CLE) after FNa administration to differentiate normal brain, injured normal brain, and tumor brain tissue in an animal glioma model. METHODS: GL261-Luc2 gliomas in C57BL/6 mice were used as a brain tumor model...
April 16, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29673658/first-trimesters-pregnancy-associated-plasma-protein-a-levels-value-to-predict-gestational-diabetes-mellitus-a-systematic-review-and-meta-analysis-of-the-literature
#19
REVIEW
Zahra Hadizadeh Talasaz, Ramin Sadeghi, Fariba Askari, Salmeh Dadgar, Atiyeh Vatanchi
Detecting pregnant women at risk of diabetes in first months can help them by early intervention for delaying or preventing onset of GDM. In this study, we aimed to assess the Predictive value of first trimester Pregnancy related plasma protein-A (PAPP-A) levels for detecting Gestational diabetes Mellitus (GDM). This systematic review and meta-analysis was conducted through probing in databases. PubMed, Scopus, Medline and Google scholar citations were searched to find the published papers from 1974 to 2017...
April 2018: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29673048/emerging-diagnostic-tests-for-vitreoretinal-lymphoma
#20
REVIEW
Abby C Dawson, Keryn A Williams, Binoy Appukuttan, Justine R Smith
Vitreoretinal lymphoma, which most commonly is diffuse large B cell non-Hodgkin in type, is a rare cancer with high morbidity and high mortality. Making a tissue diagnosis of vitreoretinal lymphoma is a major challenge for clinicians due to biological and technical factors. Yet, the delay in start of treatment may have vision- and life- threatening consequences, and there is considerable interest in the application of molecular assays to improve the accuracy of the diagnostic process: detection of a clonal immunoglobulin heavy chain rearrangements in lymphoma cells by polymerase chain reaction; measurement of vitreous or aqueous interleukin-10 protein levels in ocular fluids; and identification of mutations in the myeloid differentiation primary response gene 88 in tumour cells...
April 19, 2018: Clinical & Experimental Ophthalmology
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