keyword
MENU ▼
Read by QxMD icon Read
search

Texture mri

keyword
https://www.readbyqxmd.com/read/27887658/parameter-set-for-computer-assisted-texture-analysis-of-fetal-brain
#1
Hugues Gentillon, Ludomir Stefańczyk, Michał Strzelecki, Maria Respondek-Liberska
BACKGROUND: Magnetic resonance data were collected from a diverse population of gravid women to objectively compare the quality of 1.5-tesla (1.5 T) versus 3-T magnetic resonance imaging of the developing human brain. MaZda and B11 computational-visual cognition tools were used to process 2D images. We proposed a wavelet-based parameter and two novel histogram-based parameters for Fisher texture analysis in three-dimensional space. RESULTS: Wavenhl, focus index, and dispersion index revealed better quality for 3 T...
November 25, 2016: BMC Research Notes
https://www.readbyqxmd.com/read/27873148/local-texture-descriptors-for-the-assessment-of-differences-in-diffusion-magnetic-resonance-imaging-of-the-brain
#2
Felix Sebastian Leo Thomsen, Claudio Augusto Delrieux, Rodrigo de Luis-García
PURPOSE: Descriptors extracted from magnetic resonance imaging (MRI) of the brain can be employed to locate and characterize a wide range of pathologies. Scalar measures are typically derived within a single-voxel unit, but neighborhood-based texture measures can also be applied. In this work, we propose a new set of descriptors to compute local texture characteristics from scalar measures of diffusion tensor imaging (DTI), such as mean and radial diffusivity, and fractional anisotropy...
November 21, 2016: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/27861925/non-destructive-analysis-of-sensory-traits-of-dry-cured-loins-by-mri-computer-vision-techniques-and-data-mining
#3
Daniel Caballero, Teresa Antequera, Andrés Caro, María Del Mar Ávila, Pablo G Rodríguez, Trinidad Perez-Palacios
BACKGROUND: Magnetic resonance imaging (MRI) combined with computer vision techniques have been proposed as an alternative or complementary technique to determine the quality parameters of food in a non-destructive way. The aim of this work was to analyze the sensory attributes of dry-cured loins using this technique. For that, different MRI acquisition sequences (spin echo (SE), gradient echo (GE) and turbo 3D (T3D)), algorithms for MRI analysis (GLCM, NGLDM, GLRLM and GLCM-NGLDM-GLRLM) and predictive data mining techniques (multiple linear regression, MLR, and isotonic regression, IR) were tested...
November 9, 2016: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/27856399/enhanced-laws-textures-a-potential-mri-surrogate-marker-of-hepatic-fibrosis-in-a-murine-model
#4
Baojun Li, Hernan Jara, Heishun Yu, Michael O'Brien, Jorge Soto, Stephan W Anderson
PURPOSE: To compare enhanced Laws textures derived from parametric proton density (PD) maps to other MRI surrogate markers (T2, PD, apparent diffusion coefficient (ADC)) in assessing degrees of liver fibrosis in an ex vivo murine model of hepatic fibrosis imaged using 11.7T MRI. METHODS: This animal study was IACUC approved. Fourteen male, C57BL/6 mice were divided into control and experimental groups. The latter were fed a 3,5-dicarbethoxy-1,4-dihydrocollidine (DDC) supplemented diet to induce hepatic fibrosis...
November 14, 2016: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/27854210/skeletal-muscle-quantitative-nuclear-magnetic-resonance-imaging-and-spectroscopy-as-an-outcome-measure-for-clinical-trials
#5
Pierre G Carlier, Benjamin Marty, Olivier Scheidegger, Paulo Loureiro de Sousa, Pierre-Yves Baudin, Eduard Snezhko, Dmitry Vlodavets
Recent years have seen tremendous progress towards therapy of many previously incurable neuromuscular diseases. This new context has acted as a driving force for the development of novel non-invasive outcome measures. These can be organized in three main categories: functional tools, fluid biomarkers and imagery. In the latest category, nuclear magnetic resonance imaging (NMRI) offers a considerable range of possibilities for the characterization of skeletal muscle composition, function and metabolism. Nowadays, three NMR outcome measures are frequently integrated in clinical research protocols...
March 3, 2016: Journal of Neuromuscular Diseases
https://www.readbyqxmd.com/read/27853813/radiation-injury-vs-recurrent-brain-metastasis-combining-textural-feature-radiomics-analysis-and-standard-parameters-may-increase-18-f-fet-pet-accuracy-without-dynamic-scans
#6
Philipp Lohmann, Gabriele Stoffels, Garry Ceccon, Marion Rapp, Michael Sabel, Christian P Filss, Marcel A Kamp, Carina Stegmayr, Bernd Neumaier, Nadim J Shah, Karl-Josef Langen, Norbert Galldiks
OBJECTIVES: We investigated the potential of textural feature analysis of O-(2-[(18)F]fluoroethyl)-L-tyrosine ((18)F-FET) PET to differentiate radiation injury from brain metastasis recurrence. METHODS: Forty-seven patients with contrast-enhancing brain lesions (n = 54) on MRI after radiotherapy of brain metastases underwent dynamic (18)F-FET PET. Tumour-to-brain ratios (TBRs) of (18)F-FET uptake and 62 textural parameters were determined on summed images 20-40 min post-injection...
November 16, 2016: European Radiology
https://www.readbyqxmd.com/read/27853751/quantitative-mri-radiomics-in-the-prediction-of-molecular-classifications-of-breast-cancer-subtypes-in-the-tcga-tcia-data-set
#7
Hui Li, Yitan Zhu, Elizabeth S Burnside, Erich Huang, Karen Drukker, Katherine A Hoadley, Cheng Fan, Suzanne D Conzen, Margarita Zuley, Jose M Net, Elizabeth Sutton, Gary J Whitman, Elizabeth Morris, Charles M Perou, Yuan Ji, Maryellen L Giger
Using quantitative radiomics, we demonstrate that computer-extracted magnetic resonance (MR) image-based tumor phenotypes can be predictive of the molecular classification of invasive breast cancers. Radiomics analysis was performed on 91 MRIs of biopsy-proven invasive breast cancers from National Cancer Institute's multi-institutional TCGA/TCIA. Immunohistochemistry molecular classification was performed including estrogen receptor, progesterone receptor, human epidermal growth factor receptor 2, and for 84 cases, the molecular subtype (normal-like, luminal A, luminal B, HER2-enriched, and basal-like)...
2016: NPJ Breast Cancer
https://www.readbyqxmd.com/read/27849525/adaptive-estimation-of-active-contour-parameters-using-convolutional-neural-networks-and-texture-analysis
#8
Assaf Hoogi, Arjun Subramaniam, Rishi Veerapaneni, Daniel Rubin
In this paper, we propose a generalization of the level set segmentation approach by supplying a novel method for adaptive estimation of active contour parameters. The presented segmentation method is fully automatic once the lesion has been detected. First, the location of the level set contour relative to the lesion is estimated using a convolutional neural network (CNN). The CNN has two convolutional layers for feature extraction, which lead into dense layers for classification. Second, the output CNN probabilities are then used to adaptively calculate the parameters of the active contour functional during the segmentation process...
November 11, 2016: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/27831867/real-time-ultrasound-segmentation-analysis-and-visualisation-of-deep-cervical-muscle-structure
#9
Ryan Cunningham, Peter Harding, Ian Loram
Despite widespread availability of ultrasound and a need for personalised muscle diagnosis (neck/back pain-injury, work related disorder, myopathies, neuropathies), robust, online segmentation of muscles within complex groups remains unsolved by existing methods. For example, Cervical Dystonia (CD) is a prevalent neurological condition causing painful spasticity in one or multiple muscles in the cervical muscle system. Clinicians currently have no method for targeting/monitoring treatment of deep muscles. Automated methods of muscle segmentation would enable clinicians to study, target, and monitor the deep cervical muscles via ultrasound...
November 1, 2016: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/27829431/radiomics-based-targeted-radiotherapy-planning-rad-trap-a-computational-framework-for-prostate-cancer-treatment-planning-with-mri
#10
Rakesh Shiradkar, Tarun K Podder, Ahmad Algohary, Satish Viswanath, Rodney J Ellis, Anant Madabhushi
BACKGROUND: Radiomics or computer - extracted texture features have been shown to achieve superior performance than multiparametric MRI (mpMRI) signal intensities alone in targeting prostate cancer (PCa) lesions. Radiomics along with deformable co-registration tools can be used to develop a framework to generate targeted focal radiotherapy treatment plans. METHODS: The Rad-TRaP framework comprises three distinct modules. Firstly, a module for radiomics based detection of PCa lesions on mpMRI via a feature enabled machine learning classifier...
November 10, 2016: Radiation Oncology
https://www.readbyqxmd.com/read/27790950/magnetic-resonance-texture-parameters-are-associated-with-ablation-efficiency-in-mr-guided-high-intensity-focussed-ultrasound-treatment-of-uterine-fibroids
#11
Arnaud Hocquelet, Baudouin Denis de Senneville, Nora Frulio, Cécile Salut, Mounir Bouzgarrou, Panteleimon Papadopoulos, Hervé Trillaud
OBJECTIVES: The objective of this study is to assess the association between texture parameter analysis derived from T2-weighted images and efficiency of magnetic resonance-guided focussed ultrasound (MRgFUS) ablation for the treatment of uterine fibroids. MATERIALS AND METHODS: Fifty-five women treated by MRgFUS were included in this retrospective analysis. Texture parameters were calculated using three 2D regions of interest placed on three consecutive slices on the same sagittal 3D T2-weighted images obtained at the beginning of MRgFUS ablation...
October 28, 2016: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/27778090/radiomic-features-from-the-peritumoral-brain-parenchyma-on-treatment-na%C3%A3-ve-multi-parametric-mr-imaging-predict-long-versus-short-term-survival-in-glioblastoma-multiforme-preliminary-findings
#12
Prateek Prasanna, Jay Patel, Sasan Partovi, Anant Madabhushi, Pallavi Tiwari
OBJECTIVE: Despite 90 % of glioblastoma (GBM) recurrences occurring in the peritumoral brain zone (PBZ), its contribution in patient survival is poorly understood. The current study leverages computerized texture (i.e. radiomic) analysis to evaluate the efficacy of PBZ features from pre-operative MRI in predicting long- (>18 months) versus short-term (<7 months) survival in GBM. METHODS: Sixty-five patient examinations (29 short-term, 36 long-term) with gadolinium-contrast T1w, FLAIR and T2w sequences from the Cancer Imaging Archive were employed...
October 24, 2016: European Radiology
https://www.readbyqxmd.com/read/27768046/the-4-mountains-test-a-short-test-of-spatial-memory-with-high-sensitivity-for-the-diagnosis-of-pre-dementia-alzheimer-s-disease
#13
Dennis Chan, Laura Marie Gallaher, Kuven Moodley, Ludovico Minati, Neil Burgess, Tom Hartley
This protocol describes the administration of the 4 Mountains Test (4MT), a short test of spatial memory, in which memory for the topographical layout of four mountains within a computer-generated landscape is tested using a delayed match-to-sample paradigm. Allocentric spatial memory is assessed by altering the viewpoint, colors and textures between the initially presented and target images. Allocentric spatial memory is a key function of the hippocampus, one of the earliest brain regions to be affected in Alzheimer's disease (AD) and impairment of hippocampal function predates the onset of dementia...
October 13, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27761399/disruptions-in-neural-connectivity-associated-with-reduced-susceptibility-to-a-depth-inversion-illusion-in-youth-at-ultra-high-risk-for-psychosis
#14
Tina Gupta, Steven M Silverstein, Jessica A Bernard, Brian P Keane, Thomas V Papathomas, Andrea Pelletier-Baldelli, Derek J Dean, Raeana E Newberry, Ivanka Ristanovic, Vijay A Mittal
Patients with psychosis exhibit a reduced susceptibility to depth inversion illusions (DII) in which a physically concave surface is perceived as convex (e.g., the hollow mask illusion). Here, we examined the extent to which lessened susceptibility to DII characterized youth at ultra high risk (UHR) for psychosis. In this study, 44 UHR participants and 29 healthy controls judged the apparent convexity of face-like human masks, two of which were concave and the other convex. One of the concave masks was painted with realistic texture to enhance the illusion; the other was shown without such texture...
2016: NeuroImage: Clinical
https://www.readbyqxmd.com/read/27741542/bone-quality-beyond-bone-mineral-density
#15
Thomas M Link, Ursula Heilmeier
Both bone mass and quality are responsible for bone strength. Whereas bone mass is measured with bone mineral density, quantification of bone quality is more complex and involves bone architecture, texture, and mechanical parameters. Over the last decade, significant progress has been made in developing technologies to measure bone quality. These include novel low-cost modalities such as trabecular bone score measured on dual-energy X-ray absorptiometry images and quantitative ultrasound as well as more advanced imaging modalities such as multidetector computed tomography, magnetic resonance imaging, and high-resolution peripheral quantitative computed tomography...
July 2016: Seminars in Musculoskeletal Radiology
https://www.readbyqxmd.com/read/27737854/-am-i-about-to-lose-my-job-a-comment-on-computer-extracted-texture-features-to-distinguish-cerebral-radiation-necrosis-from-recurrent-brain-tumors-on-multiparametric-mri-a-feasibility-study
#16
https://www.readbyqxmd.com/read/27716832/introduction-of-high-throughput-magnetic-resonance-t2-weighted-image-texture-analysis-for-who-grade-2-and-3-gliomas
#17
Manabu Kinoshita, Mio Sakai, Hideyuki Arita, Tomoko Shofuda, Yasuyoshi Chiba, Naoki Kagawa, Yoshiyuki Watanabe, Naoya Hashimoto, Yasunori Fujimoto, Toshiki Yoshimine, Katsuyuki Nakanishi, Yonehiro Kanemura
Reports have suggested that tumor textures presented on T2-weighted images correlate with the genetic status of glioma. Therefore, development of an image analyzing framework that is capable of objective and high throughput image texture analysis for large scale image data collection is needed. The current study aimed to address the development of such a framework by introducing two novel parameters for image textures on T2-weighted images, i.e., Shannon entropy and Prewitt filtering. Twenty-two WHO grade 2 and 28 grade 3 glioma patients were collected whose pre-surgical MRI and IDH1 mutation status were available...
2016: PloS One
https://www.readbyqxmd.com/read/27675732/diagnostic-value-of-multimodal-magnetic-resonance-imaging-texture-features-for-the-primary-grading-of-gliomas
#18
F Yang, J C Ford, N Dogan
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27675489/texture-based-segmentation-of-lesions-on-magnetic-resonance-imaging-a-proposed-method-for-detecting-early-progression-of-glioblastoma
#19
K Tatebe, B Vaishnav, S J Chmura, J M Collins, B Aydogan
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27675419/changes-in-texture-features-of-magnetic-resonance-images-as-a-predictor-for-pathologic-necrosis-following-neoadjuvant-therapy-for-soft-tissue-sarcoma
#20
E D Miller, B S Erdal, X Mo, L M Prevedello, R D White, M X Welliver
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
keyword
keyword
106410
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"