keyword
MENU ▼
Read by QxMD icon Read
search

Tumor texture

keyword
https://www.readbyqxmd.com/read/28918299/the-prosthetic-rehabilitation-of-a-patient-with-a-lateral-postsurgical-defect-using-a-2-piece-magnet-retained-facial-prosthesis-a-clinical-report
#1
Kariem M Elhelow, Yasser E Al-Thobaiti, Abdurabu A Gomawi
Nonsurgical prosthetic interventions are often proposed after repeated grafts have failed to restore irradiated facial defects. This report describes a facial prosthetic reconstruction following ablative surgery for a sizable facial tumor by using a novel custom-made magnet-bearing substructure, which connected with an exposed part of the mandibular reconstruction plate. The defect involved the entire left lower part of the face and angle of the mentum. This reconstructive technique, together with an added surface texture with hair-like silicone strands, effectively addressed the cosmetic needs of the patient...
September 14, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28905201/assessment-of-intratumor-heterogeneity-in-mesenchymal-uterine-tumor-by-an-18-f-fdg-pet-ct-texture-analysis
#2
Tetsuya Tsujikawa, Makoto Yamamoto, Kunihiro Shono, Shizuka Yamada, Hideaki Tsuyoshi, Yasushi Kiyono, Hirohiko Kimura, Hidehiko Okazawa, Yoshio Yoshida
OBJECTIVE: The aim of this study was to retrospectively evaluate the clinical significance of (18)F-FDG PET/CT textural features for discriminating uterine sarcoma from leiomyoma. METHODS: Fifty-five patients with suspected uterine sarcoma based on ultrasound and MRI findings who underwent pretreatment (18)F-FDG PET/CT were included. Fifteen patients were histopathologically proven to have uterine sarcoma, 14 patients by surgical operation and one by biopsy, and 40 patients were diagnosed with leiomyoma by surgical operation or in a follow-up for at least 2 years...
September 13, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28898189/ct-texture-analysis-definitions-applications-biologic-correlates-and-challenges
#3
Meghan G Lubner, Andrew D Smith, Kumar Sandrasegaran, Dushyant V Sahani, Perry J Pickhardt
This review discusses potential oncologic and nononcologic applications of CT texture analysis ( CTTA CT texture analysis ), an emerging area of "radiomics" that extracts, analyzes, and interprets quantitative imaging features. CTTA CT texture analysis allows objective assessment of lesion and organ heterogeneity beyond what is possible with subjective visual interpretation and may reflect information about the tissue microenvironment. CTTA CT texture analysis has shown promise in lesion characterization, such as differentiating benign from malignant or more biologically aggressive lesions...
September 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28887861/ultrasound-guided-intratumoral-radiofrequency-ablation-coagulation-to-facilitate-meningioma-resection-preliminary-experience
#4
Li Yan, Junle Yang, Xiaodong Zhou, Guangbin He, Yu Zheng, Yali Zhu, Weiping Liu, Wen Luo, Haiying Qin, Haijing Liu, Xicai Yi, Yin Zhou
OBJECTIVES: This study aimed to explore the feasibility and safety of intratumoral radiofrequency ablation (RFA) in meningioma resection. METHODS: This study was approved by the Xijing Ethics Committee, and informed consent was obtained from all of the patients. Thirteen patients with meningiomas were recruited in the Neurosurgery Department of Xijing Hospital. These patients were treated with intratumoral RFA and surgery. We also chose 13 patients with meningiomas treated with traditional surgery as the control group...
September 9, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28887836/a-novel-method-for-quantification-of-beam-s-eye-view-tumor-tracking-performance
#5
Yue-Houng Hu, Marios Myronakis, Joerg Rottmann, Adam Wang, Daniel Morf, Daniel Shedlock, Paul Baturin, Josh Star-Lack, Ross Berbeco
PURPOSE: In-treatment imaging using an electronic portal imaging device (EPID) can be used to confirm patient and tumor positioning. Real-time tumor tracking performance using current digital megavolt (MV) imagers is hindered by poor image quality. Novel EPID designs may help to improve quantum noise response, while also preserving the high spatial resolution of the current clinical detector. Recently investigated EPID design improvements include but are not limited to multi-layer imager (MLI) architecture, thick crystalline and amorphous scintillators, and phosphor pixilation and focusing...
September 9, 2017: Medical Physics
https://www.readbyqxmd.com/read/28887761/textural-features-and-suv-based-variables-assessed-by-dual-time-point-18f-fdg-pet-ct-in-locally-advanced-breast-cancer
#6
Ana María Garcia-Vicente, David Molina, Julián Pérez-Beteta, Mariano Amo-Salas, Alicia Martínez-González, Gloria Bueno, María Jesús Tello-Galán, Ángel Soriano-Castrejón
AIM: To study the influence of dual time point 18F-FDG PET/CT in textural features and SUV-based variables and their relation among them. METHODS: Fifty-six patients with locally advanced breast cancer (LABC) were prospectively included. All of them underwent a standard 18F-FDG PET/CT (PET-1) and a delayed acquisition (PET-2). After segmentation, SUV variables (SUVmax, SUVmean, and SUVpeak), metabolic tumor volume (MTV), and total lesion glycolysis (TLG) were obtained...
September 8, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28881840/tumor-heterogeneity-assessed-by-texture-analysis-on-contrast-enhanced-ct-in-lung-adenocarcinoma-association-with-pathologic-grade
#7
Ying Liu, Shichang Liu, Fangyuan Qu, Qian Li, Runfen Cheng, Zhaoxiang Ye
Objectives To investigate whether texture features on contrast-enhanced computed tomography (CECT) images of lung adenocarcinoma have association with pathologic grade. Methods A cohort of 148 patients with surgically operated adenocarcinoma was retrospectively reviewed. Fifty-four CT features of the primary lung tumor were extracted from CECT images using open-source 3D Slicer software; meanwhile, enhancement homogeneity was evaluated by two radiologists using visual assessment. Multivariate logistic regression analysis was performed to determine significant image indicator of pathologic grade...
August 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28874803/tumor-cells-and-their-crosstalk-with-endothelial-cells-in-3d-spheroids
#8
Hila Shoval, Adi Karsch-Bluman, Yifat Brill-Karniely, Tal Stern, Gideon Zamir, Ayala Hubert, Ofra Benny
Recapitulating the tumor microenvironment is a central challenge in the development of experimental model for cancer. To provide a reliable tool for drug development and for personalized cancer therapy, it is critical to maintain key features that  exist in the original tumor. Along with this effort, 3-dimentional (3D) cellular models are being extensively studied. Spheroids are self-assembled cell aggregates that possess many important components of the physiological spatial growth and cell-cell interactions...
September 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28854966/using-automated-texture-features-to-determine-the-probability-for-masking-of-a-tumor-on-mammography-but-not-ultrasound
#9
Lothar Häberle, Carolin C Hack, Katharina Heusinger, Florian Wagner, Sebastian M Jud, Michael Uder, Matthias W Beckmann, Rüdiger Schulz-Wendtland, Thomas Wittenberg, Peter A Fasching
BACKGROUND: Tumors in radiologically dense breast were overlooked on mammograms more often than tumors in low-density breasts. A fast reproducible and automated method of assessing percentage mammographic density (PMD) would be desirable to support decisions whether ultrasonography should be provided for women in addition to mammography in diagnostic mammography units. PMD assessment has still not been included in clinical routine work, as there are issues of interobserver variability and the procedure is quite time consuming...
August 30, 2017: European Journal of Medical Research
https://www.readbyqxmd.com/read/28845594/textural-features-of-dynamic-contrast-enhanced-mri-derived-model-free-and-model-based-parameter-maps-in-glioma-grading
#10
Tian Xie, Xiao Chen, Jingqin Fang, Houyi Kang, Wei Xue, Haipeng Tong, Peng Cao, Sumei Wang, Yizeng Yang, Weiguo Zhang
BACKGROUND: Presurgical glioma grading by dynamic contrast-enhanced MRI (DCE-MRI) has unresolved issues. PURPOSE: The aim of this study was to investigate the ability of textural features derived from pharmacokinetic model-based or model-free parameter maps of DCE-MRI in discriminating between different grades of gliomas, and their correlation with pathological index. STUDY TYPE: Retrospective. SUBJECTS: Forty-two adults with brain gliomas...
August 28, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28841702/prognostic-value-of-fdg-pet-indices-for-the-assessment-of-histological-response-to-neoadjuvant-chemotherapy-and-outcome-in-pediatric-patients-with-ewing-sarcoma-and-osteosarcoma
#11
Clement Bailly, Rodolphe Leforestier, Loic Campion, Estelle Thebaud, Anne Moreau, Francoise Kraeber-Bodere, Thomas Carlier, Caroline Bodet-Milin
PURPOSE: The objective of this retrospective work was to evaluate the prognostic value on histological response and survival of quantitative indices derived from FDG-PET performed before and after chemotherapy (CHT), in a homogeneous pediatric Ewing sarcoma (EWS) and Osteosarcoma (OST) population. METHODS: Thirty-one patients with EWS and 31 with OST were included. All patients were treated with neoadjuvant CHT, and underwent surgery for local control. All patients had FDG-PET at diagnosis and after CHT, prior to surgery...
2017: PloS One
https://www.readbyqxmd.com/read/28840174/noninvasive-radiomics-signature-based-on-quantitative-analysis-of-computed-tomography-images-as-a-surrogate-for-microvascular-invasion-in-hepatocellular-carcinoma-a-pilot-study
#12
Shaimaa Bakr, Sebastian Echegaray, Rajesh Shah, Aya Kamaya, John Louie, Sandy Napel, Nishita Kothary, Olivier Gevaert
We explore noninvasive biomarkers of microvascular invasion (mVI) in patients with hepatocellular carcinoma (HCC) using quantitative and semantic image features extracted from contrast-enhanced, triphasic computed tomography (CT). Under institutional review board approval, we selected 28 treatment-naive HCC patients who underwent surgical resection. Four radiologists independently selected and delineated tumor margins on three axial CT images and extracted computational features capturing tumor shape, image intensities, and texture...
October 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/28837046/association-between-pathology-and-texture-features-of-multi-parametric-mri-of-the-prostate
#13
Peter Kuess, Piotr Andrzejewski, David Nilsson, Petra Georg, Johannes Knoth, Martin Susani, Johan Trygg, Thomas H Helbich, Stephan H Polanec, Dietmar Georg, Tufve Nyholm
The role of multi-parametric (mp)MRI in the diagnosis and treatment of prostate cancer has increased considerably. An alternative to visual inspection of mpMRI is the evaluation using histogram-based (first order statistics) parameters and textural features (second order statistics). The aims of the present work were to investigate the relationship between benign and malignant sub-volumes of the prostate and textures obtained from mpMR images. The performance of tumor prediction was investigated based on the combination of histogram-based and textural parameters...
August 24, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28821993/segmentation-of-breast-ultrasound-images-based-on-active-contours-using-neutrosophic-theory
#14
Mahsa Lotfollahi, Masoumeh Gity, Jing Yong Ye, A Mahlooji Far
PURPOSE: Ultrasound imaging is an effective approach for diagnosing breast cancer, but it is highly operator-dependent. Recent advances in computer-aided diagnosis have suggested that it can assist physicians in diagnosis. Definition of the region of interest before computer analysis is still needed. Since manual outlining of the tumor contour is tedious and time-consuming for a physician, developing an automatic segmentation method is important for clinical application. METHODS: The present paper represents a novel method to segment breast ultrasound images...
August 18, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28815452/-18-f-fdg-pet-radiomics-approaches-comparing-and-clustering-features-in-cervical-cancer
#15
Tetsuya Tsujikawa, Tasmiah Rahman, Makoto Yamamoto, Shizuka Yamada, Hideaki Tsuyoshi, Yasushi Kiyono, Hirohiko Kimura, Yoshio Yoshida, Hidehiko Okazawa
OBJECTIVES: The aims of our study were to find the textural features on (18)F-FDG PET/CT which reflect the different histological architectures between cervical cancer subtypes and to make a visual assessment of the association between (18)F-FDG PET textural features in cervical cancer. METHODS: Eighty-three cervical cancer patients [62 squamous cell carcinomas (SCCs) and 21 non-SCCs (NSCCs)] who had undergone pretreatment (18)F-FDG PET/CT were enrolled. A texture analysis was performed on PET/CT images, from which 18 PET radiomics features were extracted including first-order features such as standardized uptake value (SUV), metabolic tumor volume (MTV) and total lesion glycolysis (TLG), second- and high-order textural features using SUV histogram, normalized gray-level co-occurrence matrix (NGLCM), and neighborhood gray-tone difference matrix, respectively...
August 16, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28813195/prediction-of-therapeutic-response-of-hepatocellular-carcinoma-to-transcatheter-arterial-chemoembolization-based-on-pretherapeutic-dynamic-ct-and-textural-findings
#16
Hyun Jeong Park, Jung Hoon Kim, Seo-Youn Choi, Eun Sun Lee, Sang Joon Park, Jae Young Byun, Byung Ihn Choi
OBJECTIVE: The objective of our study was to assess the value of CT texture analysis for prediction of therapeutic response of hepatocellular carcinoma (HCC) to transcatheter arterial chemoembolization (TACE) with pretherapeutic dynamic CT. MATERIALS AND METHODS: We retrospectively analyzed 132 HCCs in 96 patients treated with TACE who underwent dynamic CT before initial TACE. Imaging findings and arterial enhancement ratios were analyzed. All HCCs were manually segmented, and their texture features were quantitatively extracted using in-house software...
August 16, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28807534/computed-tomography-radiomics-predicts-hpv-status-and-local-tumor-control-after-definitive-radiochemotherapy-in-head-and-neck-squamous-cell-carcinoma
#17
Marta Bogowicz, Oliver Riesterer, Kristian Ikenberg, Sonja Stieb, Holger Moch, Gabriela Studer, Matthias Guckenberger, Stephanie Tanadini-Lang
PURPOSE: This study aimed to predict local tumor control (LC) after radiochemotherapy of head and neck squamous cell carcinoma (HNSCC) and human papillomavirus (HPV) status using computed tomography (CT) radiomics. METHODS AND MATERIALS: HNSCC patients treated with definitive radiochemotherapy were included in the retrospective study approved by the local ethical commission (93 and 56 patients in the training and validation cohorts, respectively). Three hundred seventeen CT radiomic features, including those based on shape, intensity, texture, and wavelet transform, were calculated in the primary tumor region...
June 15, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28804040/significance-of-the-tentorial-alignment-in-protecting-the-occipital-lobe-through-the-poppen-approach-for-tentorial-or-pineal-area-meningiomas
#18
Deling Li, Haoyu Zhang, Wang Jia, Liwei Zhang, Junting Zhang, Weiming Liu, Ming Ni, Guijun Jia
OBJECT: We aimed to identify the factors that can predict the risk of occipital lobe damage preoperatively when resecting tumors located at the tentorial or pineal regions through the occipital-transtentorial approach (Poppen approach). METHODS: In 27 consecutive patients who underwent tumor resection through the Poppen approach for tentorial or pineal region meningiomas, the following morphologic parameters were assessed on a preoperative MRI: 1) tentorial angle; 2) tentorial length; 3) the shortest distance from the confluence of sinus to the tumor...
August 10, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28802697/the-insertion-of-polybia-mp1-peptide-into-phospholipid-monolayers-is-regulated-by-its-anionic-nature-and-phase-state
#19
Dayane S Alvares, Natalia Wilke, João Ruggiero Neto, Maria Laura Fanani
Polybia-MP1 or simply MP1 (IDWKKLLDAAKQIL-NH2) is a peptide with broad-spectrum bactericidal activity and a strong inhibitory effect against cancer cells. The aim of this work was to evaluate the effect of biophysical properties such as membrane texture and film thickness on MP1 interaction with neutral and anionic lipid membranes. For this purpose, we first explored the peptide's surface behavior. MP1 showed high surface activity, adsorbing onto bare air/aqueous interfaces up to higher surface pressures than the collapse pressure of MP1 Langmuir films...
October 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/28796109/resurfacing-of-the-mid-and-lower-faces-by-preexpanded-supraclavicular-flap
#20
Muxin Zhao, Yangqun Li, Lisi Xu, Zhe Yang, Chunmei Hu, Yong Tang, Wen Chen, Ning Ma, Weixin Wang, Jun Feng
Extensive scarring and giant nevi on the mid and lower faces places further demands on scar resurfacing in terms of match, size, and thickness. The area of supraclavicular cervical flap is rather limited, but the expansion could expand its utility in facial resurfacing.Rectangular expanders were inserted via the incisions at the upper fringes of clavicles, and implanted under supraclavicular flap areas. After full expansion, the flap based on supraclavicular artery was elevated to cover the defects left by surgical removal of scar or tumor...
September 2017: Journal of Craniofacial Surgery
keyword
keyword
33247
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"