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Image Texture Analysis

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https://www.readbyqxmd.com/read/29325682/computer-based-quantitative-computed-tomography-image-analysis-in-idiopathic-pulmonary-fibrosis-a-mini-review
#1
REVIEW
Hirotsugu Ohkubo, Hiroaki Nakagawa, Akio Niimi
Idiopathic pulmonary fibrosis (IPF) is the most common type of progressive idiopathic interstitial pneumonia in adults. Many computer-based image analysis methods of chest computed tomography (CT) used in patients with IPF include the mean CT value of the whole lungs, density histogram analysis, density mask technique, and texture classification methods. Most of these methods offer good assessment of pulmonary functions, disease progression, and mortality. Each method has merits that can be used in clinical practice...
January 2018: Respiratory Investigation
https://www.readbyqxmd.com/read/29322596/subclinical-depressive-symptoms-during-late-midlife-and-structural-brain-alterations-a-longitudinal-study-of-danish-men-born-in-1953
#2
Merete Osler, Lauge Sørensen, Maarten Rozing, Oriol Puig Calvo, Mads Nielsen, Egill Rostrup
We explored whether depressive symptoms measured three times during midlife were associated with structural brain alterations quantified using magnetic resonance imaging measurements of volume, cortical thickness, and intensity texture. In 192 men born in 1953 with depressive symptoms measured at age 51, 56, and 59 years, magnetic resonance imaging was performed at age 59. All data processing was performed using the Freesurfer software package except for the texture-scores that were computed using in-house software...
January 10, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29322101/a-novel-individual-level-morphological-brain-networks-constructing-method-and-its-evaluation-in-pet-and-mr-images
#3
Jiehui Jiang, Hucheng Zhou, Huoqiang Duan, Xin Liu, Chuantao Zuo, Zhemin Huang, Zhihua Yu, Zhuangzhi Yan
Mapping the human brain is one of the great scientific challenges of the 21st century. Brain network analysis is an effective technique based on graph theory that is widely used to investigate network patterns in the human brain. Currently, mapping an individual brain network using a single image has been a hotspot in the field of brain science; techniques, such as the Kullback-Leibler (KL) method, have applications in structural Magnetic Resonance (MR) imaging. However, maintaining an image's intensity, shape, texture and gradient information during feature extraction is very challenging...
December 2017: Heliyon
https://www.readbyqxmd.com/read/29321645/mri-features-predictive-of-negative-surgical-margins-in-patients-with-her2-overexpressing-breast-cancer-undergoing-breast-conservation
#4
Brittany Z Dashevsky, Jung Hun Oh, Aditya P Apte, Blanca Bernard-Davila, Elizabeth A Morris, Joseph O Deasy, Elizabeth J Sutton
Here we develop a tool to predict resectability of HER2+ breast cancer at breast conservation surgery (BCS) utilizing features identified on preoperative breast MRI. We identified patients with HER2+ breast cancer who obtained pre-operative breast MRI and underwent BCS between 2002-2013. From the contoured tumor on pre-operative MRI, shape, histogram, and co-occurrence and size zone matrix texture features were extracted. In univariate analysis, Spearman's correlation coefficient (Rs) was used to assess the correlation between each image feature and an endpoint (surgical re-excision)...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29314345/differentiation-between-vasogenic-edema-and-infiltrative-tumor-in-patients-with-high-grade-gliomas-using-texture-patch-based-analysis
#5
Moran Artzi, Gilad Liberman, Deborah T Blumenthal, Orna Aizenstein, Felix Bokstein, Dafna Ben Bashat
BACKGROUND: High-grade gliomas (HGGs) induce both vasogenic edema and extensive infiltration of tumor cells, both of which present with similar appearance on conventional MRI. Using current radiological criteria, differentiation between these tumoral and nontumoral areas within the nonenhancing lesion area remains challenging. PURPOSE: To use radiomics patch-based analysis, based on conventional MRI, for the classification of the nonenhancing lesion area in patients with HGG into tumoral and nontumoral components...
January 3, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29312866/quantitative-texture-analysis-on-pre-treatment-computed-tomography-predicts-local-recurrence-in-stage-i-non-small-cell-lung-cancer-following-stereotactic-radiation-therapy
#6
Carole Dennie, Rebecca Thornhill, Carolina A Souza, Cecilia Odonkor, Jason R Pantarotto, Robert MacRae, Graham Cook
Background: The prediction of local recurrence (LR) of stage I non-small cell lung cancer (NSCLC) after definitive stereotactic body radiotherapy (SBRT) remains elusive. The purpose of this study was to assess whether quantitative imaging features on pre-treatment computed tomography (CT) can predict LR beyond 18 (18F) fluorodeoxyglucose (18F-FDG) positron emission tomography (PET)/CT maximum standard uptake value (SUVmax). Methods: This retrospective study evaluated 36 patients with 37 stage I NSCLC who had local tumor control (LC; n=19) and (LR; n=18)...
December 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/29311558/radiogenomic-analysis-of-hypoxia-pathway-is-predictive-of-overall-survival-in-glioblastoma
#7
Niha Beig, Jay Patel, Prateek Prasanna, Virginia Hill, Amit Gupta, Ramon Correa, Kaustav Bera, Salendra Singh, Sasan Partovi, Vinay Varadan, Manmeet Ahluwalia, Anant Madabhushi, Pallavi Tiwari
Hypoxia, a characteristic trait of Glioblastoma (GBM), is known to cause resistance to chemo-radiation treatment and is linked with poor survival. There is hence an urgent need to non-invasively characterize tumor hypoxia to improve GBM management. We hypothesized that (a) radiomic texture descriptors can capture tumor heterogeneity manifested as a result of molecular variations in tumor hypoxia, on routine treatment naïve MRI, and (b) these imaging based texture surrogate markers of hypoxia can discriminate GBM patients as short-term (STS), mid-term (MTS), and long-term survivors (LTS)...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29311419/radiogenomics-of-hepatocellular-carcinoma-multiregion-analysis-based-identification-of-prognostic-imaging-biomarkers-by-integrating-gene-data-a-preliminary-study
#8
Wei Xia, Ying Chen, Rui Zhang, Zhuangzhi Yan, Xiaobo Zhou, Bo Zhang, Xin Gao
To identify prognostic imaging biomarkers for hepatocellular carcinoma (HCC) in contrast-enhanced computed tomography (CECT) with biological interpretations by associating imaging features and gene modules. We retrospectively analyzed 371 patients who had gene expression profiles. For the 38 patients with CECT imaging data, automatic intra-tumor partition was performed resulting in three spatially distinct subregions. We extracted totally 37 quantitative imaging features describing intensity, geometry, and texture from each subregion...
January 9, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29300116/comparative-analysis-of-classification-based-algorithms-for-diabetes-diagnosis-using-iris-images
#9
Piyush Samant, Ravinder Agarwal
Photo-diagnosis is always an intriguing area for the researchers, with the advancement of image processing and computer machine vision techniques it have become more reliable and popular in recent years. The objective of this paper is to study the change in the features of iris, particularly irregularities in the pigmentation of certain areas of the iris with respect to diabetic health of an individual. Apart from the point that iris recognition concentrates on the overall structure of the iris, diagnostic techniques emphasises the local variations in the particular area of iris...
January 4, 2018: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/29285575/alteration-of-gray-matter-texture-features-over-the-whole-brain-in-medication-overuse-headache-using-a-3-dimentional-texture-analysis
#10
Zhiye Chen, Xiaoyan Chen, Zhiqiang Chen, Mengqi Liu, Huiguang He, Lin Ma, Shengyuan Yu
BACKGROUND: Imaging studies have provided valuable information in understanding the headache neuromechanism for medication-overuse headache (MOH), and the aim of this study is to investigate altered texture features of MR structural images over the whole brain in MOH using a 3-dimentional texture analysis. METHODS: Brain three-dimensional T1-weighted structural images were obtained from 44 MOH patients and 32 normal controls (NC). The imaging processing included two steps: gray matter (gray images) segment and a 3-dimensional texture features mapping...
November 28, 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/29284425/mri-texture-analysis-in-differentiating-luminal-a-and-luminal-b-breast-cancer-molecular-subtypes-a-feasibility-study
#11
Kirsi Holli-Helenius, Annukka Salminen, Irina Rinta-Kiikka, Ilkka Koskivuo, Nina Brück, Pia Boström, Riitta Parkkola
BACKGROUND: The aim of this study was to use texture analysis (TA) of breast magnetic resonance (MR) images to assist in differentiating estrogen receptor (ER) positive breast cancer molecular subtypes. METHODS: Twenty-seven patients with histopathologically proven invasive ductal breast cancer were selected in preliminary study. Tumors were classified into molecular subtypes: luminal A (ER-positive and/or progesterone receptor (PR)-positive, human epidermal growth factor receptor type 2 (HER2) -negative, proliferation marker Ki-67 < 20 and low grade (I)) and luminal B (ER-positive and/or PR-positive, HER2-positive or HER2-negative with high Ki-67 ≥ 20 and higher grade (II or III))...
December 29, 2017: BMC Medical Imaging
https://www.readbyqxmd.com/read/29281150/to-distinguish-flexible-and-rigid-lumbar-curve-from-mri-texture-analysis-in-adolescent-idiopathic-scoliosis-a-feasibility-study
#12
Claudia Chevrefils, Delphine Périé, Stefan Parent, Farida Cheriet
BACKGROUND: Imaging in side bending, supine, traction, fulcrum, and push prone are examples of methods used to evaluate the curve reduction of scoliotic spine. However, being able to determine spine curve flexibility from MRI would eliminate the need of additional X-ray radiation related to radiograph acquisition in side-bending. PURPOSE/HYPOTHESIS: To find specific texture features of lumbar postural muscles on MRI that can distinguish flexible from rigid lumbar scoliotic curves...
December 27, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29279165/computer-aided-diagnosis-of-contrast-enhanced-spectral-mammography-a-feasibility-study
#13
Bhavika K Patel, Sara Ranjbar, Teresa Wu, Barbara A Pockaj, Jing Li, Nan Zhang, Mark Lobbes, Bin Zhang, J Ross Mitchell
OBJECTIVE: To evaluate whether the use of a computer-aided diagnosis-contrast-enhanced spectral mammography (CAD-CESM) tool can further increase the diagnostic performance of CESM compared with that of experienced radiologists. MATERIALS AND METHODS: This IRB-approved retrospective study analyzed 50 lesions described on CESM from August 2014 to December 2015. Histopathologic analyses, used as the criterion standard, revealed 24 benign and 26 malignant lesions. An expert breast radiologist manually outlined lesion boundaries on the different views...
January 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/29279146/pretreatment-mr-imaging-radiomics-signatures-for-response-prediction-to-induction-chemotherapy-in-patients-with-nasopharyngeal-carcinoma
#14
Guangyi Wang, Lan He, Cai Yuan, Yanqi Huang, Zaiyi Liu, Changhong Liang
PURPOSE: This study aimed to investigate the capability of magnetic resonance (MR) imaging radiomics signatures for pretreatment prediction of early response to induction chemotherapy in patients with nasopharyngeal carcinoma (NPC). MATERIALS AND METHODS: This was a retrospective study consisting of 120 patients with biopsy-proven NPC (stage II-IV). Texture features were extracted from the pretreatment morphological MR images for each case. Radiomics signatures were obtained with the least absolute shrinkage and selection operator method (LASSO) logistic regression model...
January 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/29273964/hrct-texture-analysis-for-pure-or-part-solid-ground-glass-nodules-distinguishability-of-adenocarcinoma-in-situ-or-minimally-invasive-adenocarcinoma-from-invasive-adenocarcinoma
#15
Takuya Yagi, Motohiko Yamazaki, Riuko Ohashi, Rei Ogawa, Hiroyuki Ishikawa, Norihiko Yoshimura, Masanori Tsuchida, Yoichi Ajioka, Hidefumi Aoyama
PURPOSE: To distinguish between adenocarcinoma in situ (AIS)-minimally invasive adenocarcinoma (MIA) and invasive adenocarcinoma (IAC) showing pure or part-solid ground-glass nodules (GGNs) by high-resolution computed tomography (HRCT) texture analysis. MATERIALS AND METHODS: This retrospective study included 101 consecutive patients with 115 pure or part-solid GGNs ≤ 3 cm diameter, which were surgically resected and pathologically diagnosed with AIS, MIA, or IAC (48 AIS-MIA and 67 IAC) between April 2011 and March 2015...
December 22, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/29273104/quantifying-alopecia-areata-via-texture-analysis-to-automate-the-salt-score-computation
#16
Elena Bernardis, Leslie Castelo-Soccio
Quantifying alopecia areata in real time has been a challenge for clinicians and investigators. Although several scoring systems exist, they can be cumbersome. Because there are more clinical trials in alopecia areata, there is an urgent need for a quantitative system that is reproducible, standardized, and simple. In this article, a computer imaging algorithm to recreate the Severity of Alopecia Tool scoring system in an automated way is presented. A pediatric alopecia areata image set of four view-standardized photographs was created, and texture analysis was used to distinguish between normal hair and bald scalp...
January 2018: Journal of Investigative Dermatology. Symposium Proceedings
https://www.readbyqxmd.com/read/29251666/advanced-pet-imaging-in-oncology-status-and-developments-with-current-and-future-relevance-to-lung-cancer-care
#17
Wieland Voigt
PURPOSE OF REVIEW: This review highlights the status and developments of PET imaging in oncology, with particular emphasis on lung cancer. We discuss the significance of PET for diagnosis, staging, decision-making, monitoring of treatment response, and drug development. The PET key advantage, the noninvasive assessment of functional and molecular tumor characteristics including tumor heterogeneity, as well as PET trends relevant to cancer care are exemplified. RECENT FINDINGS: Advances of PET and radiotracer technology are encouraging for multiple fields of oncological research and clinical application, including in-depth assessment of PET images by texture analysis (radiomics)...
December 14, 2017: Current Opinion in Oncology
https://www.readbyqxmd.com/read/29251503/preparation-of-a-strong-gelatin-short-linear-glucan-nanocomposite-hydrogel-via-an-in-situ-self-assembly-process
#18
Shengju Ge, Man Li, Na Ji, Jing Liu, Hongyan Mu, Liu Xiong, Qingjie Sun
Gelatin hydrogel exhibits excellent biocompatibility, nonimmunogenicity, and biodegradability, but it has limited applications in the food and medical industries due to its poor mechanical properties. Herein, we first developed an in situ self-assembly process for the preparation of gelatin-short linear glucan (SLG) nanocomposite hydrogels with enhanced mechanical strength. The microstructure, dynamic viscoelasticity, compression behavior, and thermal characteristic of gelatin-SLG nanocomposite hydrogels were determined using scanning electron microscopy (SEM), dynamic rheological experiments, compression tests, and texture profile analysis tests...
December 18, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29249023/cortical-fractal-analysis-and-collagen-crosslinks-content-in-femoral-neck-after-osteoporotic-fracture-in-postmenopausal-women-comparison-with-osteoarthritis
#19
Gustavo Davi Rabelo, Jean-Paul Roux, Nathalie Portero-Muzy, Evelyne Gineyts, Roland Chapurlat, Pascale Chavassieux
The femoral neck (FN) has been previously characterized by thinner cortices in osteoporotic fracture (HF) when compared to hip osteoarthritis (HOA). The purposes of this study were to complete the previous investigations on FNs from HF and HOA by analyzing the complexity of the cortical structure and to approach the intrinsic properties of cortical bone by assessing the collagen crosslink contents. FN samples were obtained during arthroplasty in 35 postmenopausal women (HF; n = 17; mean age 79 ± 2 years; HOA; n = 18; mean age 66 ± 2 years)...
December 16, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/29247171/computer-aided-nodule-assessment-and-risk-yield-canary-may-facilitate-non-invasive-prediction-of-egfr-mutation-status-in-lung-adenocarcinomas
#20
Ryan Clay, Benjamin R Kipp, Sarah Jenkins, Ron A Karwoski, Fabien Maldonado, Srinivasan Rajagopalan, Jesse S Voss, Brian J Bartholmai, Marie Christine Aubry, Tobias Peikert
Computer-Aided Nodule Assessment and Risk Yield (CANARY) is quantitative imaging analysis software that predicts the histopathological classification and post-treatment disease-free survival of patients with adenocarcinoma of the lung. CANARY characterizes nodules by the distribution of nine color-coded texture-based exemplars. We hypothesize that quantitative computed tomography (CT) analysis of the tumor and tumor-free surrounding lung facilitates non-invasive identification of clinically-relevant mutations in lung adenocarcinoma...
December 15, 2017: Scientific Reports
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