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Image Texture Analysis

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https://www.readbyqxmd.com/read/28545080/computerized-margin-and-texture-analyses-for-differentiating-bacterial-pneumonia-and-invasive-mucinous-adenocarcinoma-presenting-as-consolidation
#1
Hyun Jung Koo, Mi Young Kim, Ja Hwan Koo, Yu Sub Sung, Jiwon Jung, Sung-Han Kim, Chang-Min Choi, Hwa Jung Kim
Radiologists have used margin characteristics based on routine visual analysis; however, the attenuation changes at the margin of the lesion on CT images have not been quantitatively assessed. We established a CT-based margin analysis method by comparing a target lesion with normal lung attenuation, drawing a slope to represent the attenuation changes. This approach was applied to patients with invasive mucinous adenocarcinoma (n = 40) or bacterial pneumonia (n = 30). Correlations among multiple regions of interest (ROIs) were obtained using intraclass correlation coefficient (ICC) values...
2017: PloS One
https://www.readbyqxmd.com/read/28544679/sima-a-simplified-migration-assay-for-analyzing-neutrophil-migration
#2
Markus Weckmann, Tim Becker, Gyde Nissen, Martin Pech, Matthias V Kopp
In lung inflammation, neutrophils are the first leukocytes migrating to an inflammatory site, eliminating pathogens by multiple mechanisms. The term "migration" describes several stages of neutrophil movement to reach the site of inflammation, of which the passage of the interstitium and basal membrane of the airway are necessary to reach the site of bronchial inflammation. Currently, several methods exist (e.g., Boyden Chamber, under-agarose assay, or microfluidic systems) to assess neutrophil mobility. However, these methods do not allow for parameterization on single cell level, that is, the individual neutrophil pathway analysis is still considered challenging...
May 19, 2017: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/28543071/differentiating-enhancing-multiple-sclerosis-lesions-glioblastoma-and-lymphoma-with-dynamic-texture-parameters-analysis-dtpa-a-feasibility-study
#3
Rajeev K Verma, Roland Wiest, C Locher, Mirjam R Heldner, Phillip Schucht, Andreas Raabe, Jan Gralla, Christian Philipp Kamm, Johannes Slotboom, Frauke Kellner-Weldon
PURPOSE: MR-imaging hallmarks of glioblastoma (GB), cerebral lymphoma (CL), and demyelinating lesions are gadolinium (Gd) uptake due to blood brain barrier disruption. Thus, initial diagnosis may be difficult based on conventional Gd enhanced MRI alone. Here, the added value of a dynamic texture parameter analysis (DTPA) in the differentiation between these three entities is examined. DTPA is an in-house software tool that incorporates the analysis of quantitative texture parameters extracted from dynamic susceptibility contrast enhanced (DSCE) images...
May 19, 2017: Medical Physics
https://www.readbyqxmd.com/read/28539228/soft-surface-irregularity-of-malignant-perihilar-biliary-strictures-in-cholangiography-as-a-risk-factor-for-early-dysfunction-of-multiple-metal-stents
#4
Yoshihide Kanno, Kei Ito, Shinsuke Koshita, Takahisa Ogawa, Kaori Masu, Hiroaki Kusunose, Toshitaka Sakai, Toji Murabayashi, Sho Hasegawa, Fumisato Kozakai, Yutaka Noda
BACKGROUND: Multiple metal stents (multi-MS) in the perihilar bile duct often develop dysfunction in an unexpectedly short period. AIMS: This study is aimed to identify the risk factors for shorter patency of multi-MS. METHODS: Of 97 patients who underwent multi-MS placement, 68 patients were followed-up for >28 days were retrospectively analyzed. Univariate analyses with the log-rank test was performed on 20 factors, including two newly defined classifications of cholangiography: the R classification, which classifies the rough image (localized type [R1] or spreading type [R2]); and the S classification, which classifies the surface texture (soft irregularity [S1], solid irregularity [S2], or smooth [S3])...
May 1, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28538408/precision-of-quantitative-computed-tomography-texture-analysis-using-image-filtering-a-phantom-study-for-scanner-variability
#5
Koichiro Yasaka, Hiroyuki Akai, Dennis Mackin, Laurence Court, Eduardo Moros, Kuni Ohtomo, Shigeru Kiryu
Quantitative computed tomography (CT) texture analyses for images with and without filtration are gaining attention to capture the heterogeneity of tumors. The aim of this study was to investigate how quantitative texture parameters using image filtering vary among different computed tomography (CT) scanners using a phantom developed for radiomics studies.A phantom, consisting of 10 different cartridges with various textures, was scanned under 6 different scanning protocols using four CT scanners from four different vendors...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28532709/image-texture-features-predict-renal-function-decline-in-patients-with-autosomal-dominant-polycystic-kidney-disease
#6
Timothy L Kline, Panagiotis Korfiatis, Marie E Edwards, Kyongtae T Bae, Alan Yu, Arlene B Chapman, Michal Mrug, Jared J Grantham, Douglas Landsittel, William M Bennett, Bernard F King, Peter C Harris, Vicente E Torres, Bradley J Erickson
Magnetic resonance imaging (MRI) examinations provide high-resolution information about the anatomic structure of the kidneys and are used to measure total kidney volume (TKV) in patients with Autosomal Dominant Polycystic Kidney Disease (ADPKD). Height-adjusted TKV (HtTKV) has become the gold-standard imaging biomarker for ADPKD progression at early stages of the disease when estimated glomerular filtration rate (eGFR) is still normal. However, HtTKV does not take advantage of the wealth of information provided by MRI...
May 20, 2017: Kidney International
https://www.readbyqxmd.com/read/28523352/interim-heterogeneity-changes-measured-using-entropy-texture-features-on-t2-weighted-mri-at-3-0%C3%A2-t-are-associated-with-pathological-response-to-neoadjuvant-chemotherapy-in-primary-breast-cancer
#7
Shelley Henderson, Colin Purdie, Caroline Michie, Andrew Evans, Richard Lerski, Marilyn Johnston, Sarah Vinnicombe, Alastair M Thompson
OBJECTIVES: To investigate whether interim changes in hetereogeneity (measured using entropy features) on MRI were associated with pathological residual cancer burden (RCB) at final surgery in patients receiving neoadjuvant chemotherapy (NAC) for primary breast cancer. METHODS: This was a retrospective study of 88 consenting women (age: 30-79 years). Scanning was performed on a 3.0 T MRI scanner prior to NAC (baseline) and after 2-3 cycles of treatment (interim)...
May 18, 2017: European Radiology
https://www.readbyqxmd.com/read/28523317/mri-as-indicator-of-pulmonary-tuberculosis-activity-from-morphological-to-molecular-level-assessment-a-case-report
#8
Maria Teodora Antuaneta Buzan, Hanelore Herta, Mihaela Maria Coman, Daniela Homorodean, Silviu Andrei Sfrângeu, Carmen Monica Pop
We present the case of an adult patient with active post-primary pulmonary tuberculosis (TB) and discuss specific morphological and textural aspects found at high-field magnetic resonance imaging (MRI) of the lung. The 42-year-old man, heavy smoker, undertook a routine employment medical examination and was admitted to a referral pulmonology and TB center due to the abnormal findings seen on his chest radiography. The patient presented nonspecific symptoms, bilateral bronchial breath at pulmonary auscultation, inflammatory syndrome on the laboratory blood tests and positive sputum smears for acid-fast bacilli, which together with the typical aspect on the chest radiography lead to a diagnosis of post-primary pulmonary TB and administration of specific medication...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28522257/can-ct-measures-of-tumour-heterogeneity-stratify-risk-for-nodal-metastasis-in-patients-with-non-small-cell-lung-cancer
#9
M Craigie, J Squires, K Miles
AIM: To undertake a preliminary assessment of the potential for computed tomography (CT) measurement of tumour heterogeneity to stratify risk of nodal metastasis in patients with non-small cell lung cancer (NSCLC). MATERIALS AND METHODS: Tumour heterogeneity in CT images from combined positron-emission tomography (PET)/CT examinations in 150 consecutive patients with NSCLC was assessed using CT texture analysis (CTTA). The short axis diameter of the largest mediastinal node was also measured...
May 15, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28521821/intratumoral-and-peritumoral-radiomics-for-the-pretreatment-prediction-of-pathological-complete-response-to-neoadjuvant-chemotherapy-based-on-breast-dce-mri
#10
Nathaniel M Braman, Maryam Etesami, Prateek Prasanna, Christina Dubchuk, Hannah Gilmore, Pallavi Tiwari, Donna Pletcha, Anant Madabhushi
BACKGROUND: In this study, we evaluated the ability of radiomic textural analysis of intratumoral and peritumoral regions on pretreatment breast cancer dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) to predict pathological complete response (pCR) to neoadjuvant chemotherapy (NAC). METHODS: A total of 117 patients who had received NAC were retrospectively analyzed. Within the intratumoral and peritumoral regions of T1-weighted contrast-enhanced MRI scans, a total of 99 radiomic textural features were computed at multiple phases...
May 18, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28508418/quantitative-analysis-of-the-cervical-texture-by-ultrasound-in-the-mid-pregnancy-is-associated-with-spontaneous-preterm-birth
#11
Núria Baños, Alvaro Perez-Moreno, Carla Julià, Clara Murillo-Bravo, David Coronado, Eduard Gratacos, Jan Deprest, Montse Palacio
OBJECTIVE: New tools are required to identify women at increased risk of spontaneous preterm birth (sPTB). Quantitative texture analysis by ultrasound has been used to extract robust features from the ultrasound image of a given tissue to detect subtle changes in its microstructure. This may also be applied to the cervix. We aimed to determine if there is an association between quantitative analysis of the cervical texture (CTx) by ultrasound in the mid-trimester of pregnancy and sPTB <37(+0) weeks...
May 15, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28508375/an-integration-of-decision-tree-and-visual-analysis-to-analyze-intracranial-pressure
#12
Soo-Yeon Ji, Kayvan Najarian, Toan Huynh, Dong Hyun Jeong
In Traumatic Brain Injury (TBI), elevated Intracranial Pressure (ICP) causes severe brain damages due to hemorrhage and swelling. Monitoring ICP plays an important role in the treatment of TBI patients because ICP is considered a strong predictor of neurological outcome and a potentially amenable method to treat patients. However, it is difficult to predict and measure accurate ICP due to the complex nature of patients' clinical conditions. ICP monitoring for severe TBI patient is a challenging problem for clinicians because traditionally known ICP monitoring is an invasive procedure by placing a device inside the brain to measure pressure...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28499022/quantitative-imaging-biomarkers-for-risk-stratification-of-patients-with-recurrent-glioblastoma-treated-with-bevacizumab
#13
Patrick Grossmann, Vivek Narayan, Ken Chang, Rifaquat Rahman, Lauren Abrey, David A Reardon, Lawrence H Schwartz, Patrick Y Wen, Brian M Alexander, Raymond Huang, Hugo J W L Aerts
Background: Antiangiogenic therapy with bevacizumab is the most widely used treatment option for recurrent glioblastoma, but therapeutic response varies substantially and effective biomarkers for patient selection are not available. To this end, we determine whether novel quantitative radiomic strategies on the basis of magnetic-resonance-imaging (MRI) have the potential to noninvasively stratify survival and progression in this patient population. Methods: In an initial cohort of 126 patients, we identified a distinct set of features representative of the radiographic phenotype on baseline (pre-treatment) MRI...
May 11, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28497403/locally-advanced-rectal-cancer-predicting-non-responders-to-neoadjuvant-chemoradiotherapy-using-apparent-diffusion-coefficient-textures
#14
Ming Liu, Han Lv, Li-Heng Liu, Zheng-Han Yang, Er-Hu Jin, Zhen-Chang Wang
PURPOSE: The purpose of the study is to evaluate whether apparent diffusion coefficient (ADC) textures could identify patient with locally advanced rectal cancer (LARC) who would not respond to neoadjuvant chemoradiotherapy (NCRT). METHOD: Twenty-six patients who underwent MRI including diffusion-weighted imaging at a 3.0 T system before NCRT were enrolled. Texture analysis of pre-therapy ADC mapping was carried out, and a total of 133 ADC textures as well as routine mean ADC value of the primary tumor were extracted for each patient...
May 11, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28493790/endometrial-carcinoma-mr-imaging-based-texture-model-for-preoperative-risk-stratification-a-preliminary-analysis
#15
Yoshiko Ueno, Behzad Forghani, Reza Forghani, Anthony Dohan, Xing Ziggy Zeng, Foucauld Chamming's, Jocelyne Arseneau, Lili Fu, Lucy Gilbert, Benoit Gallix, Caroline Reinhold
Purpose To evaluate the associations among mathematical modeling with the use of magnetic resonance (MR) imaging-based texture features and deep myometrial invasion (DMI), lymphovascular space invasion (LVSI), and histologic high-grade endometrial carcinoma. Materials and Methods Institutional review board approval was obtained for this retrospective study. This study included 137 women with endometrial carcinomas measuring greater than 1 cm in maximal diameter who underwent 1.5-T MR imaging before hysterectomy between January 2011 and December 2015...
May 10, 2017: Radiology
https://www.readbyqxmd.com/read/28493789/idiopathic-pulmonary-fibrosis-data-driven-textural-analysis-of-extent-of-fibrosis-at-baseline-and-15-month-follow-up
#16
Stephen M Humphries, Kunihiro Yagihashi, Jason Huckleberry, Byung-Hak Rho, Joyce D Schroeder, Matthew Strand, Marvin I Schwarz, Kevin R Flaherty, Ella A Kazerooni, Edwin J R van Beek, David A Lynch
Purpose To evaluate associations between pulmonary function and both quantitative analysis and visual assessment of thin-section computed tomography (CT) images at baseline and at 15-month follow-up in subjects with idiopathic pulmonary fibrosis (IPF). Materials and Methods This retrospective analysis of preexisting anonymized data, collected prospectively between 2007 and 2013 in a HIPAA-compliant study, was exempt from additional institutional review board approval. The extent of lung fibrosis at baseline inspiratory chest CT in 280 subjects enrolled in the IPF Network was evaluated...
May 10, 2017: Radiology
https://www.readbyqxmd.com/read/28483013/value-of-texture-feature-analysis-in-the-differential-diagnosis-of-hepatic-cyst-and-hemangioma-in-magnetic-resonance-imaging
#17
Botao Wang, Gang Liu, Wenping Fan, Xiaohuan Zhang, Yuhong Lu, Zhiye Chen
Objective To investigate the difference of texture on conventional T2-weighted image (T2WI) between hepatic cyst and hepatic hemangioma. Methods All the subjects included 156 patients with hepatic cyst [A group:100 cases with equi or low signal on diffusion weighted imaging (DWI);B group:56 cases with high signal on DWI] and 100 patients with hemangioma (C group). Conventional magnetic resonance imaging T2WI,DWI and dynamic contrast enhancement were performed on all the patients,and the texture analysis was applied with the images of T2WI,and the texture parameters included angular second moment,contrast,correlation,inverse difference moment,and entropy...
April 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28482407/-value-of-texture-analysis-in-evaluating-liver-cancer-recurrence-after-transarterial-chemoembolization
#18
R Wang, X Y Yang, K Y Wang, S Wang, Q Li, J F Wu, H T Xu, Y Dai, C P Han, K Xu, G H Chen
Objective: To investigate the feasibility of contrast-enhanced computer tomography (CT) texture analysis in predicting early recurrence after transarterial chemoembolization (TACE) in patients with liver cancer. Methods: A retrospective analysis was performed for 47 patients with liver cancer confirmed by liver biopsy and digital subtraction angiography who underwent upper abdominal contrast-enhanced CT scan before TACE, and according to the presence or absence of focal recurrence within half a year, these patients were divided into early recurrence (ER) group and non-early recurrence (NER) group...
March 20, 2017: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/28480118/predictive-nuclear-chromatin-characteristics-of-melanoma-and-dysplastic-nevi
#19
Matthew G Hanna, Chi Liu, Gustavo K Rohde, Rajendra Singh
BACKGROUND: The diagnosis of malignant melanoma (MM) is among the diagnostic challenges pathologists encounter on a routine basis. Melanoma may arise in patients with preexisting dysplastic nevi (DN) and it is still the cause of 1.7% of all cancer-related deaths. Melanomas often have overlapping histological features with DN, especially those with severe dysplasia. Nucleotyping for identifying nuclear textural features can analyze nuclear DNA structure and organization. The aim of this study is to differentiate MM and DN using these methodologies...
2017: Journal of Pathology Informatics
https://www.readbyqxmd.com/read/28477395/quantitative-comparison-of-clustered-microcalcifications-in-for-presentation-and-for-processing-mammograms-in-full-field-digital-mammography
#20
Juan Wang, Robert M Nishikawa, Yongyi Yang
PURPOSE: Mammograms acquired with full-field digital mammography (FFDM) systems are provided in both "for-processing" and "for-presentation" image formats. For-presentation images are traditionally intended for visual assessment by the radiologists. In this study, we investigate the feasibility of using for-presentation images in computerized analysis and diagnosis of microcalcification (MC) lesions. METHODS: We make use of a set of 188 matched mammogram image pairs of MC lesions from 95 cases (biopsy proven), in which both for-presentation and for-processing images are provided for each lesion...
May 6, 2017: Medical Physics
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