keyword
MENU ▼
Read by QxMD icon Read
search

DWI

keyword
https://www.readbyqxmd.com/read/28440973/histochemical-and-immunohistochemical-study-of-%C3%AE-sma-collagen-and-pcna-in-epithelial-ovarian-neoplasm
#1
Nungki Anggorowati, Chatarina Ratna Kurniasari, Karina Damayanti, Titik Cahyanti, Irianiwati Widodo, Ahmad Ghozali, Muhammad Mansyur Romi, Dwi Cahyani Ratna Sari, Nur Arfian
Background: Alpha-smooth muscle actin (α-SMA) is an isoform of actin, positive in myofibroblasts and is an epithelial to mesenchymal transition (EMT) marker. EMT is a process by which tumor cells develop to be more hostile and able to metastasize. Progression of tumor cells is always followed by cell composition and extracellular matrix component alteration. Increased α-SMA expression and collagen alteration may predict the progressivity of ovarian neoplasms. Objective: The aim of this research was to analyse the characteristic of α-SMA and collagen in tumor cells and stroma of ovarian neoplasms...
March 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28439776/preoperative-grading-of-supratentorial-nonenhancing-gliomas-by-high-b-value-diffusion-weighted-3%C3%A2-t-magnetic-resonance-imaging
#2
Haiwei Han, Chengkun Han, Xiurong Wu, Shan Zhong, Xiongjie Zhuang, Guowei Tan, Hua Wu
The purpose of this study was to determine the difference in discrimination between high- and low-grade supratentorial nonenhancing gliomas (HGGs and LGGs, respectively) when using apparent diffusion coefficient (ADC) values with high or standard b-value. Thirty-nine patients underwent conventional magnetic resonance imaging and diffusion-weighted imaging (DWI) with standard and high b-values (b = 1000 and 3000 s/mm(2), respectively). Minimum, maximum, and mean ADC values (ADCMIN, ADCMAX, and ADCMEAN, respectively) were measured from ADC maps with both b-values...
April 24, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28435195/intestinal-microbial-ecology-and-hematological-parameters-of-broiler-fed-cassava-waste-pulp-fermented-with-acremonium-charticola
#3
Sugiharto Sugiharto, Turrini Yudiarti, Isroli Isroli, Endang Widiastuti, Fatan Dwi Putra
AIM: The aim of this study was to evaluate the effect of feeding Acremonium charticola-fermented cassava pulp (AC-FCP) on the intestinal microbial ecology and hematological indices of broiler chickens. MATERIALS AND METHODS: A total of 240 male Lohman day-old-chicks were randomly allotted to one of the four experimental diets including control diet, control diet + antimicrobials (neomycin; 300 mg/kg diet), diet containing AC-FCP (16 g/100 g diet) or diet containing AC-FCP + antimicrobials...
March 2017: Veterinary World
https://www.readbyqxmd.com/read/28433970/simultaneous-transient-global-amnesia-and-right-mca-stroke-after-valsalva-manoeuvre
#4
Ariel Fernando Mariaca, Jose Manuel Valdueza, Christian Gaebel, Manuel Gomez-Choco
A 61-year-old man suffered an episode of transient confusion and anterograde amnesia after a Valsalva-related manoeuvre. The MRI diffusion weighted imaging (DWI) sequences showed a left hippocampal and two right parietal lesions that were deemed as acute. The MR angiography disclosed a high-grade stenosis in the right middle cerebral artery as was described by a transcranial colour-coded ultrasound as well. Ultrasound investigation of the jugular veins showed a right jugular venous reflux after a Valsalva manoeuvre...
April 22, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28433947/maximum-likelihood-estimation-of-cardiac-fiber-bundle-orientation-from-arbitrarily-spaced-diffusion-weighted-images
#5
Andreas Nagler, Cristóbal Bertoglio, Christian T Stoeck, Sebastian Kozerke, Wolfgang A Wall
We propose an estimation scheme for local fiber bundle direction in the left ventricle directly from gray values of arbitrarily spaced cardiac diffusion weighted images (DWI). The approach is based on a parametric and space-dependent mathematical representation of the myocardial fiber bundle orientation and hence the diffusion tensor (DT) for the ventricular geometry. By solving a nonlinear inverse problem derived from a maximum likelihood estimator, the degrees of freedom of the fiber and DT model can be estimated from the measured gray values of the DWIs...
April 4, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28433624/temporal-slice-registration-and-robust-diffusion-tensor-reconstruction-for-improved-fetal-brain-structural-connectivity-analysis
#6
Bahram Marami, Seyed Sadegh Mohseni Salehi, Onur Afacan, Benoit Scherrer, Caitlin K Rollins, Edward Yang, Judy A Estroff, Simon K Warfield, Ali Gholipour
Diffusion weighted magnetic resonance imaging, or DWI, is one of the most promising tools for the analysis of neural microstructure and the structural connectome of the human brain. The application of DWI to map early development of the human connectome in-utero, however, is challenged by intermittent fetal and maternal motion that disrupts the spatial correspondence of data acquired in the relatively long DWI acquisitions. Fetuses move continuously during DWI scans. Reliable and accurate analysis of the fetal brain structural connectome requires careful compensation of motion effects and robust reconstruction to avoid introducing bias based on the degree of fetal motion...
April 19, 2017: NeuroImage
https://www.readbyqxmd.com/read/28432835/detection-of-soft-tissue-abscess-comparison-of-diffusion-weighted-imaging-to-contrast-enhanced-mri
#7
Chang Woo Chun, Joon-Yong Jung, Jun Seung Baik, Won-Hee Jee, Sun Ki Kim, Seung Han Shin
PURPOSE: To compare the diagnostic performances of diffusion-weighted imaging (DWI)-combined magnetic resonance imaging (MRI) performed without intravenous contrast material with gadolinium contrast material-enhanced (CE) MRI for diagnosing soft-tissue abscesses. MATERIALS AND METHODS: In all, 119 patients (mean age: 56 years) with skin and soft-tissue infection who underwent contrast-enhanced MRI with DWI (b = 0-800) were included. Two readers independently reviewed both image sets-nonenhanced conventional MR images (NECI)+DWI, and NECI+contrast enhanced fat-suppressed T1 -weighted imaging (CEFST1 )-for the presence of abscess...
April 22, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28432519/carotid-plaque-with-expansive-arterial-remodeling-is-a-risk-factor-for-ischemic-complication-following-carotid-artery-stenting
#8
Daina Kashiwazaki, Naoya Kuwayama, Naoki Akioka, Kyo Noguchi, Satoshi Kuroda
BACKGROUND: Carotid artery stenting (CAS) is associated with a higher risk of periprocedural stroke than carotid endarterectomy. For better patient selection, more accurate risk factors should be identified. The aim of this study was to determine whether expansive arterial remodeling can predict ischemic complications in patients undergoing CAS. METHODS: This retrospective study included 82 patients with carotid stenosis treated by CAS. The plaque component was evaluated using MR plaque imaging before the procedure...
April 21, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28431825/single-subcortical-infarct-pathomechanism-assessed-by-thin-section-computed-tomography-perfusion
#9
Dong Hoon Shin, Ernst Klotz, Eung Yeop Kim
INTRODUCTION: The pathomechanism of a single subcortical infarct (SSI) may be better determined by assessing the perfusion status between parent artery and ischemic lesion. We aimed to compare the classifications into branch atheromatous disease (BAD) versus non-BAD based on diffusion-weighted imaging (DWI) or computed tomography perfusion (CTP), and to test whether a CTP-based classification improves the predicting power for progression in SSI (PSSI) compared to that by DWI. METHODS: We enrolled 109 consecutive patients with SSI examined by whole-supratentorial brain CTP and follow-up DWI...
April 18, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28430583/non-invasive-prediction-of-the-tumor-growth-rate-using-advanced-diffusion-models-in-head-and-neck-squamous-cell-carcinoma-patients
#10
Noriyuki Fujima, Tomohiro Sakashita, Akihiro Homma, Taisuke Harada, Yukie Shimizu, Khin Khin Tha, Kohsuke Kudo, Hiroki Shirato
We assessed parameters of advanced diffusion weighted imaging (DWI) models for the prediction of the tumor growth rate in 55 head and neck squamous cell carcinoma (HNSCC) patients. The DWI acquisition used single-shot spin-echo echo-planar imaging with 12 b-values (0-2000). We calculated 14 DWI parameters using mono-exponential, bi-exponential, tri-exponential, stretched exponential and diffusion kurtosis imaging models. We directly measured the tumor growth rate from two sets of different-date imaging data...
April 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28427220/multiparametric-imaging-using-18f-fdg-pet-ct-heterogeneity-parameters-and-functional-mri-techniques-prognostic-significance-in-patients-with-primary-advanced-oropharyngeal-or-hypopharyngeal-squamous-cell-carcinoma-treated-with-chemoradiotherapy
#11
Sheng-Chieh Chan, Nai-Ming Cheng, Chia-Hsun Hsieh, Shu-Hang Ng, Chien-Yu Lin, Tzu-Chen Yen, Cheng-Lung Hsu, Hung-Ming Wan, Chun-Ta Liao, Kai-Ping Chang, Jiun-Jie Wang
BACKGROUND: In this study, PET heterogeneity was combined with functional MRI techniques to refine the prediction of prognosis in patients with oropharyngeal or hypopharyngeal squamous cell carcinoma (OHSCC). METHODS: A total of 124 patients with primary advanced OHSCC who underwent pretreatment 18F-FDG PET/CT, dynamic contrast-enhanced MR imaging (DCE-MRI), and diffusion-weighted MR imaging (DWI) were enrolled. Conventional and heterogeneity parameters from 18F-FDG PET as well as perfusion parameters from DCE-MRI and diffusion parameter from DWI of primary tumors were analyzed in relation to recurrence-free survival (RFS) and overall survival (OS)...
March 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28426828/consumption-of-fortified-infant-foods-reduces-dietary-diversity-but-has-a-positive-effect-on-subsequent-growth-in-infants-from-sumedang-district-indonesia
#12
Aly Diana, Simonette R Mallard, Jillian J Haszard, Dwi Monik Purnamasari, Ikrimah Nurulazmi, Pratami D Herliani, Gaga I Nugraha, Rosalind S Gibson, Lisa Houghton
Stunting and underweight among under-five children in Indonesia are common, raising public health concerns. Whether inappropriate complementary feeding (CF) practices compromise optimal growth during late infancy in Indonesia is uncertain. Therefore we characterized and evaluated CF practices in Indonesian infants and investigated their relationship with subsequent growth. We enrolled breastfed infants at 6 months of age (n = 230); and followed them at 9 (n = 202) and 12 months of age (n = 190). We collected socio-demographic and anthropometric data and two-day in-home weighed food records...
2017: PloS One
https://www.readbyqxmd.com/read/28425349/clinical-characteristics-of-unknown-symptom-onset-stroke-patients-with-and-without-diffusion-weighted-imaging-and-fluid-attenuated-inversion-recovery-mismatch
#13
Götz Thomalla, Florent Boutitie, Jochen B Fiebach, Claus Z Simonsen, Salvador Pedraza, Robin Lemmens, Norbert Nighoghossian, Pascal Roy, Keith W Muir, Martin Ebinger, Ian Ford, Bastian Cheng, Ivana Galinovic, Tae-Hee Cho, Josep Puig, Vincent Thijs, Matthias Endres, Jens Fiehler, Christian Gerloff
Background Diffusion-weighted imaging (DWI) and fluid-attenuated inversion recovery (FLAIR) mismatch was suggested to identify stroke patients with unknown time of symptom onset likely to be within the time window for thrombolysis. Aims We aimed to study clinical characteristics associated with DWI-FLAIR mismatch in patients with unknown onset stroke. Methods We analyzed baseline MRI and clinical data from patients with acute ischemic stroke proven by DWI from WAKE-UP, an investigator-initiated, randomized, placebo-controlled trial of MRI-based thrombolysis in stroke patients with unknown time of symptom onset...
January 1, 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/28424822/rapid-non-contrast-magnetic-resonance-imaging-for-post-appendectomy-intra-abdominal-abscess-in-children
#14
Megan H Lee, Eric P Eutsler, Elizabeth F Sheybani, Geetika Khanna
BACKGROUND: Acute appendicitis, especially if perforated at presentation, is often complicated by postoperative abscess formation. The detection of a postoperative abscess relies primarily on imaging. This has traditionally been done with contrast-enhanced computed tomography. Non-contrast magnetic resonance imaging (MRI) has the potential to accurately detect intra-abdominal abscesses, especially with the use of diffusion-weighted imaging (DWI). OBJECTIVE: To evaluate our single-center experience with a rapid non-contrast MRI protocol evaluating post-appendectomy abscesses in children with persistent postsurgical symptoms...
April 20, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28424779/the-effectiveness-of-various-salacca-vinegars-as-therapeutic-agent-for-management-of-hyperglycemia-and-dyslipidemia-on-diabetic-rats
#15
Elok Zubaidah, Widya Dwi Rukmi Putri, Tiara Puspitasari, Umi Kalsum, Dianawati Dianawati
The aim of this study was to explore the potency of salacca vinegar made from various Indonesian salacca fruit extracts as therapeutic agent for hyperglycemia and dyslipidemia for STZ-induced diabetic rats. The rats were grouped into untreated rats, STZ-induced diabetic rats without treatment, and STZ-induced diabetic rats treated with Pondoh salacca vinegar, Swaru salacca vinegar, Gula Pasir salacca vinegar, Madu salacca vinegar, or Madura salacca vinegar. Parameter observed included blood glucose, total cholesterol (TC), high density lipoprotein (HDL), low density lipoprotein (LDL), triglyceride (TG), malondialdehyde (MDA), superoxide dismutase (SOD), and pancreas histopathology of the samples...
2017: International journal of food science
https://www.readbyqxmd.com/read/28423540/correlations-between-intravoxel-incoherent-motion-ivim-parameters-and-histological-findings-in-rectal-cancer-preliminary-results
#16
Alexey Surov, Hans Jonas Meyer, Anne-Kathrin Höhn, Curd Behrmann, Andreas Wienke, Rolf Peter Spielmann, Nikita Garnov
Our purpose was to correlate different intravoxel incoherent motion (IVIM), histopathological and clinical parameters in rectal cancer. 17 patients with histologically proven rectal cancer investigated on a 3.T device were included into the study. DWI was performed using a multi-slice single-shot echo-planar imaging sequence with b values of 0, 50, 200, 500 and 1000 s/mm.2 A polygonal region of interest was drawn within the tumors on every b image. The following parameters were retrieved from IVIM: apparent diffusion coefficient (ADC), true diffusion (D), pseudo diffusion coefficient (D*), perfusion factor (f), and relative perfusion f·D*...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423178/head-to-head-comparison-of-structurally-unrelated-dpp4-inhibitors-in-the-setting-of-renal-ischemia-reperfusion-injury
#17
Christoph Reichetzeder, Karoline von Websky, Oleg Tsuprykov, Azadeh Mohagheghi Samarin, Luise Gabriele Falke, Sulistyo Emantoko Dwi Putra, Ahmed Abdallah Hasan, Viktoriia Antonenko, Caterina Curato, Jörg Rippman, Thomas Klein, Berthold Hocher
BACKGROUND AND PURPOSE: Results regarding protective effects of DPP4 inhibitors in renal ischemia-reperfusion-injury (IRI) are conflicting. The current study performed a head-to-head comparison of structurally unrelated DPP4 inhibitors in the setting of renal IRI. EXPERIMENTAL APPROACH: IRI was induced in uninephrectomized male rats by renal artery clamping for 30 minutes. The sham group was uninephrectomized but not subjected to IRI. DPP4 inhibitors or vehicle were given p...
April 18, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28422807/clinical-robustness-of-accelerated-and-optimized-abdominal-diffusion-weighted-imaging
#18
Jana Taron, Jakob Weiß, Petros Martirosian, Ferdinand Seith, Alto Stemmer, Fabian Bamberg, Mike Notohamiprodjo
OBJECTIVES: The aim of this study was to assess the robustness of an accelerated and optimized diffusion-weighted sequence in clinical routine abdominal imaging using the simultaneous multislice (SMS) technique for scan time reduction and 3-dimensional (3D) diagonal diffusion mode to optimize image quality. MATERIALS AND METHODS: One hundred fifty consecutive patients received clinically indicated magnetic resonance imaging for abdominal imaging including an optimized SMS diffusion-weighted sequence (DWIOPT: diffusion mode 3D diagonal; SMS factor 2; scan time 1:44 minutes)...
April 19, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28421406/whole-body-mri-with-qualitative-and-quantitative-analysis-of-dwi-for-assessment-of-bone-marrow-involvement-in-lymphoma
#19
Annalisa Balbo-Mussetto, Chiara Saviolo, Alberto Fornari, Daniela Gottardi, Massimo Petracchini, Annalisa Macera, Chiara Valentina Lario, Teresa Gallo, Corrado Tarella, Stefano Cirillo
AIM: Our study aimed to investigate the role of qualitative and quantitative whole body MRI with DWI for assessment of bone marrow involvement (BMI) in newly diagnosed lymphoma using FDG PET-CT and bone marrow biopsy (BMB) as reference standard. MATERIALS AND METHODS: We retrospectively evaluated 56 patients with newly diagnosed lymphoma (21 Hodgkin's lymphoma and 35 non-Hodgkin's lymphoma) who underwent random unilateral BMB, FDG PET-CT and Wb-MRI-DWI for initial staging...
April 18, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28419645/diagnostic-performance-of-different-imaging-modalities-in-the-assessment-of-distant-metastasis-and-local-recurrence-of-tumor-in-patients-with-non-small-cell-lung-cancer
#20
Yoshiharu Ohno, Takeshi Yoshikawa, Yuji Kishida, Shinichiro Seki, Hisanobu Koyama, Masao Yui, Yoshimori Kassai, Kota Aoyagi, Shigeo Kaminaga, Kazuro Sugimura
PURPOSE: To compare the diagnostic performance of positron emission tomography with [18F] fluoro-2-deoxy-glucose (FDG-PET) coregistered with magnetic resonance imaging (FDG-PET/MRI), MRI with and without diffusion-weighted imaging (DWI), FDG-PET fused with computed tomography (FDG-PET/CT) with brain contrast-enhanced (CE-) MRI, and routine radiological examination for assessment of postoperative recurrence in nonsmall-cell lung cancer (NSCLC) patients. MATERIALS AND METHODS: 96 consecutive postoperative NSCLC patients (52 men, 44 women; mean age 72 years) prospectively underwent whole-body 3T MRI with and without DWI; PET/CTs and routine radiological examinations consisted of CE-brain MRI, whole-body CE-CT, and bone scintigraphy...
April 17, 2017: Journal of Magnetic Resonance Imaging: JMRI
keyword
keyword
1498
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"