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Breast mri

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https://www.readbyqxmd.com/read/28535650/-texture-analysis-based-on-contrast-enhanced-mri-can-predict-treatment-response-to-neoadjuvant-chemotherapy-of-breast-cancer
#1
S H Sun, C W Zhou, L Y Zhao, R Z Zhang, H Ouyang
Objective: To investigate whether texture analysis based on contrast-enhanced MRI can predict pathological complete response of locally advanced breast cancer undergoing neoadjuvant chemotherapy(NAC). Methods: Forty-seven patients with breast cancer undergone neoadjuvant chemotherapy from January 2015 to February 2016 were divided into pathological complete response (pCR) group or non-pathological complete response (non-pCR) group based on surgical pathology. Their parameters of texture analysis based on MRI before neoadjuvant chemotherapy and after 2 cycles of treatment were analyzed...
May 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28535000/staging-performance-of-whole-body-dwi-pet-ct-and-pet-mri-in-invasive-ductal-carcinoma-of-the-breast
#2
Onofrio Antonio Catalano, Dania Daye, Alberto Signore, Carlo Iannace, Mark Vangel, Angelo Luongo, Marco Catalano, Mazzeo Filomena, Luigi Mansi, Andrea Soricelli, Marco Salvatore, Niccolo Fuin, Ciprian Catana, Umar Mahmood, Bruce Robert Rosen
The aim of the present study was to evaluate the performance of whole-body diffusion-weighted imaging (WB-DWI), whole-body positron emission tomography with computed tomography (WB-PET/CT), and whole-body positron emission tomography with magnetic resonance imaging (WB-PET/MRI) in staging patients with untreated invasive ductal carcinoma of the breast. Fifty-one women with newly diagnosed invasive ductal carcinoma of the breast underwent WB-DWI, WB-PET/CT and WB-PET/MRI before treatment. A radiologist and a nuclear medicine physician reviewed in consensus the images from the three modalities and searched for occurrence, number and location of metastases...
May 19, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28531188/monitoring-tumor-response-to-neoadjuvant-chemotherapy-using-mri-and-18f-fdg-pet-ct-in-breast-cancer-subtypes
#3
Alexander M Th Schmitz, Suzana C Teixeira, Kenneth E Pengel, Claudette E Loo, Wouter V Vogel, Jelle Wesseling, Emiel J Th Rutgers, Renato A Valdés Olmos, Gabe S Sonke, Sjoerd Rodenhuis, Marie Jeanne T F D Vrancken Peeters, Kenneth G A Gilhuijs
PURPOSE: To explore guidelines on the use of MRI and PET/CT monitoring primary tumor response to neoadjuvant chemotherapy (NAC), taking breast cancer subtype into account. MATERIALS AND METHODS: In this prospective cohort study, 188 women were included with stages II and III breast cancer. MRI and 18F-FDG-PET/CT were acquired before and during NAC. Baseline pathology was assessed from tumor biopsy. Tumors were stratified into HER2-positive, ER-positive/HER2-negative (ER-positive), and ER-negative/PR-negative/HER2-negative (triple-negative) subtypes, and treated according to subtype...
2017: PloS One
https://www.readbyqxmd.com/read/28530138/review-and-management-of-breast-lesions-detected-with-breast-tomosynthesis-but-not-visible-on-mammography-and-ultrasonography
#4
Fusun Taskin, Yasemin Durum, Aykut Soyder, Alparslan Unsal
Background Breast tomosynthesis is more sensitive than mammography and can detect lesions that are not always visible with conventional methods such as digital mammography (MG) and ultrasonography (US). No standardized approach is available for the management of lesions that are detectable with tomosynthesis but are not visible on MG or US. Purpose To review suspicious breast lesions detected with tomosynthesis but not visible on two-dimensional (2D) MG or US and to determine the management options for these lesions...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28527397/mri-surveillance-for-women-with-dense-breasts-and-a-previous-breast-cancer-and-or-high-risk-lesion
#5
Michelle Nadler, Hyder Al-Attar, Ellen Warner, Anne L Martel, Sharmila Balasingham, Liying Zhang, Joseph H Lipton, Belinda Curpen
BACKGROUND: The role of surveillance breast MRI for women with mammographically dense breasts, a personal history of breast cancer (BC), atypical hyperplasia (AH), or lobular carcinoma in situ (LCIS) is unclear. We estimated the performance of annual surveillance MRI in women with a combination of these risk factors. METHODS: We performed a retrospective review of the clinical, radiological, and pathological parameters of women who received annual concurrent surveillance breast MRI and mammography between 04/2013 and 12/2015 and fulfilled all of the following criteria: 1) age <70; 2) prior diagnosis of AH, LCIS or BC; 3) heterogeneously or extremely dense breast(s); and 4) did not qualify for our provincial breast MRI high risk screening program...
May 17, 2017: Breast: Official Journal of the European Society of Mastology
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
#6
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/28522877/dce-mri-background-parenchymal-enhancement-quantified-from-an-early-versus-delayed-post-contrast-sequence-association-with-breast-cancer-presence
#7
Shandong Wu, Margarita L Zuley, Wendie A Berg, Brenda F Kurland, Rachel C Jankowitz, Jules H Sumkin, David Gur
We investigated automated quantitative measures of background parenchymal enhancement (BPE) derived from an early versus delayed post-contrast sequence in breast dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) for association with breast cancer presence in a case-control study. DCE-MRIs were retrospectively analyzed for 51 cancer cases and 51 controls with biopsy-proven benign lesions, matched by age and year-of-MRI. BPE was quantified using fully-automated validated computer algorithms, separately from three sequential DCE-MRI post-contrast-subtracted sequences (SUB1, SUB2, and SUB3)...
May 18, 2017: Scientific Reports
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
#8
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/28512732/decision-making-in-the-surgical-management-of-invasive-breast-cancer-part-1-lumpectomy-mastectomy-and-contralateral-prophylactic-mastectomy
#9
REVIEW
Lisa A Newman
Several prospective randomized clinical trials conducted internationally have proven the safety and survival equivalence of breast-conserving surgery compared with mastectomy. Adjuvant radiation is routinely recommended following lumpectomy surgery to minimize the risk of local recurrence. Comprehensive breast imaging (including bilateral mammography with diagnostic views and ultrasound evaluation), in addition to clinical examination, is essential to rule out potential contralateral pathology and to optimally characterize the extent of disease...
May 15, 2017: Oncology (Williston Park, NY)
https://www.readbyqxmd.com/read/28512158/association-between-changes-in-fat-distribution-and-biomarkers-for-breast-cancer
#10
Willemijn A van Gemert, Evelyn Monninkhof, Anne M May, Sjoerd G Elias, Job van der Palen, Wouter Veldhuis, Maaike Stapper, Rebecca K Stellato, Jantina A Schuit, Petra H M Peeters
We assessed the associations between changes in total and abdominal fat and changes in biomarkers for breast cancer risk using data of the SHAPE-2 trial. In the SHAPE-2 trial, 243 postmenopausal overweight women were included. The intervention in this trial consisted of 5-6 kg weight loss either by diet only or exercise plus diet. After 16 weeks, we measured serum sex hormones, inflammatory markers, total body fat (measured by DEXA scan) and intra and subcutaneous abdominal fat (measured by MRI). Associations between changes in different body fat depots and biomarkers were analysed by linear regression using the study cohort irrespective of randomization in order to make maximal use of the distribution of changes in fat measures...
May 16, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28511975/leptomeningeal-failure-in-patients-with-breast-cancer-receiving-stereotactic-radiosurgery-for-brain-metastases
#11
REVIEW
Edina C Wang, Andrew J Huang, Karen E Huang, Emory R McTyre, Hui-Wen Lo, Kounosuke Watabe, Linda Metheny-Barlow, Adrian W Laxton, Stephen B Tatter, Roy E Strowd, Michael D Chan, Brandi R Page
PURPOSE: Prior studies suggest a high incidence of leptomeningeal failure (LMF) in breast cancer metastatic to brain. This study examines breast cancer-specific variables affecting development of LMF and survival after Gamma-Knife Radiosurgery (GKS). METHODS: Between 2000-2010, 149 (breast) and 658 other-histology patients were treated with GKS. Hormone/HER2, age, local/distant brain failure, prior craniotomy, and prior whole-brain radiotherapy (WBRT) were assessed...
May 13, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28508764/current-incidence-of-different-morphological-types-of-malignant-metastases-to-the-spine-based-on-magnetic-resonance-imaging
#12
Grzegorz Guzik
BACKGROUND: Malignant tumours particularly often metastasise to the spine, causing considerable pain and limiting the patient's physical function. Standard therapy consists in surgical treatment with adjuvant radiotherapy. The qualification for surgery is a multifaceted process and detailed analysis of the morphology of the metastasis is a key factor. Numerous types of classification of metastatic lesions exist, among which the Tomita system, based on MRI findings, appears to be the most practical...
April 12, 2017: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28508129/development-and-characterization-of-magnetite-poly-butylcyanoacrylate-nanoparticles-for-magnetic-targeted-delivery-of-cancer-drugs
#13
Margarita López-Viota, Mazen M El-Hammadi, Laura Cabeza, José Prados, Consolación Melguizo, M Adolfina Ruiz Martinez, José L Arias, Ángel V Delgado
A great attention is presently paid to the design of drug delivery vehicles based on surface-modified magnetic nanoparticles. They can, in principle, be directed to a desired target area for releasing their drug payload, a process triggered by pH, temperature, radiation, or even magnetic field. To this, the possibility of forming part of diagnostic tools by enhanced magnetic resonance imaging or that of further treatment by magnetic hyperthermia can be added. Bare particles are rapidly eliminated from the bloodstream by the phagocyte mononuclear system, leading to short biological half-life...
May 15, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28506802/stealth-magnetic-nanocarriers-of-sirna-as-platform-for-breast-cancer-theranostics
#14
J Bruniaux, S Ben Djemaa, K Hervé-Aubert, H Marchais, I Chourpa, S David
The endogenous mechanism of RNA interference is more and more used in research to obtain specific down-regulation of gene expression in diseases such as breast cancer. Currently, despite the new fields of study open up by RNA interference, the rapid degradation of siRNA by nucleases and their negative charges prevent them from crossing cell membranes. To overcome these limitations, superparamagnetic iron oxide nanoparticles (SPIONs) represent a promising alternative for nucleic acid delivery. Previously, we reported the magnetic siRNA nanovectors (MSN) formulation using electrostatic assembly of (1) SPIONs, also able to act as contrast agents for magnetic resonance imaging (MRI), (2) siRNA and (3) chitosan aiming at their protection and enhancing their transfection efficacy...
May 12, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28506511/an-abbreviated-protocol-for-high-risk-screening-breast-magnetic-resonance-imaging-impact-on-performance-metrics-and-bi-rads-assessment
#15
Babita Panigrahi, Lisa Mullen, Eniola Falomo, Benita Panigrahi, Susan Harvey
RATIONALE AND OBJECTIVES: Annual breast magnetic resonance imaging (MRI) is recommended to screen high-risk populations for breast cancer, although costs are significant. This study assesses the performance of an abbreviated MRI protocol as a resource-efficient approach for screening patients at high-risk of breast cancer, and assesses whether the abbreviated protocol alters the assigned Breast Imaging Reporting and Data System (BI-RADS) category. MATERIALS AND METHODS: This is a prospective paired cohort study performed in an academic ambulatory setting...
May 11, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28501855/extracellular-ph-is-a-biomarker-enabling-detection-of-breast-cancer-and-liver-cancer-using-cest-mri
#16
Miaomiao Chen, Chaoying Chen, Zhiwei Shen, Xiaolei Zhang, Yanzi Chen, Fengfeng Lin, Xilun Ma, Caiyu Zhuang, Yifei Mao, Haochuan Gan, Peidong Chen, Xiaodan Zong, Renhua Wu
Extracellular pH (pHe) decrease is associated with tumor growth, invasion, metastasis, and chemoresistance, which can be detected by chemical exchange saturation transfer (CEST) magnetic resonance imaging (MRI). Here, we demonstrated that ioversol CEST MRI can be exploited to achieve pHe mapping of the liver cancer microenvironment. In in vitro studies, we firstly explored whether ioversol signal is pH-dependent, and calculated the function equation between the CEST effects of ioversol and pH values, in the range of 6...
April 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28499438/early-developed-asd-adjacent-segmental-disease-in-patients-after-surgical-treatment-of-the-spine-due-to-cancer-metastases
#17
Grzegorz Guzik
BACKGROUND: The causes of ASD are still relatively unknown. Correlation between clinical status of patients and radiological MRI findings is of primary importance. The radiological classifications proposed by Pfirmann and Oner are most commonly used to assess intradiscal degenerative changes. The aim of the study was to assess the influence of the extension of spine fixation on the risk of developing ASD in a short time after surgery. METHODS: A total of 332 patients with spinal tumors were treated in our hospital between 2010 and 2013...
May 12, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28497566/cest-mri-of-3-o-methyl-d-glucose-on-different-breast-cancer-models
#18
Michal Rivlin, Gil Navon
PURPOSE: To test the ability of chemical exchange saturation transfer (CEST) MRI of 3-O-methyl-D-glucose (3OMG) to detect tumors in several breast cancer models of murine and human origin, for different routes of administration of the agent and to compare the method with glucoCEST and with (18) FDG-PET on the same animals. METHODS: In vivo CEST MRI experiments were performed with a 7T Biospec animal MRI scanner on implanted orthotopic mammary tumors of mice before and after administration of 3OMG...
May 12, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28497020/silicone-breast-implant-rupture-a-review
#19
REVIEW
Christopher Hillard, Jason D Fowler, Ruth Barta, Bruce Cunningham
Silicone breast implants have been in use for nearly 6 decades. In this time they have undergone significant changes in design and use. They have been subject to intense scrutiny with regard to safety and efficacy, including an almost 10 years moratorium on their use. The current generations of implants have been followed via the manufacturer's Core studies in order to obtain long term data regarding safety and complications. The results of the more recent studies are compiled in this review. Rupture rates are initially very low and begin to increase after 6-8 years of implantation...
April 2017: Gland Surgery
https://www.readbyqxmd.com/read/28494526/ultrasonographic-evaluation-of-women-with-pathologic-nipple-discharge
#20
Jung Hyun Yoon, Haesung Yoon, Eun-Kyung Kim, Hee Jung Moon, Youngjean Vivian Park, Min Jung Kim
Nipple discharge is a common symptom that is alarming for the patient since it can be a presenting symptom of breast cancer. Breast imaging is used to examine women with pathologic nipple discharge in order to detect any lesions that may be present and to assist in the differential diagnosis. The modalities of breast imaging include mammography, breast ultrasonography (US), and magnetic resonance imaging. Breast US is currently considered to be useful for the visualization of ductal structures and intraductal lesions that cause nipple discharge...
April 9, 2017: Ultrasonography
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