keyword
MENU ▼
Read by QxMD icon Read
search

Lactate MRI

keyword
https://www.readbyqxmd.com/read/29902200/acrin-6684-multicenter-phase-ii-assessment-of-tumor-hypoxia-in-newly-diagnosed-glioblastoma-using-magnetic-resonance-spectroscopy
#1
Eva-Maria Ratai, Zheng Zhang, James Fink, Mark Muzi, Lucy Hanna, Erin Greco, Todd Richards, Daniel Kim, Ovidiu C Andronesi, Akiva Mintz, Lale Kostakoglu, Melissa Prah, Benjamin Ellingson, Kathleen Schmainda, Gregory Sorensen, Daniel Barboriak, David Mankoff, Elizabeth R Gerstner
A multi-center imaging trial by the American College of Radiology Imaging Network (ACRIN) "A Multicenter, phase II assessment of tumor hypoxia in glioblastoma using 18F Fluoromisonidazole (FMISO) with PET and MRI (ACRIN 6684)", was conducted to assess hypoxia in patients with glioblastoma (GBM). The aims of this study were to support the role of proton magnetic resonance spectroscopic imaging (1H MRSI) as a prognostic marker for brain tumor patients in multi-center clinical trials. Seventeen participants from four sites had analyzable 3D MRSI datasets acquired on Philips, GE or Siemens scanners at either 1...
2018: PloS One
https://www.readbyqxmd.com/read/29870085/cancer-in-the-crosshairs-targeting-cancer-metabolism-with-hyperpolarized-carbon-13-mri-technology
#2
Cornelius von Morze, Matthew E Merritt
Magnetic resonance (MR)-based hyperpolarized (HP) 13 C metabolic imaging is under active pursuit as a new clinical diagnostic method for cancer detection, grading, and monitoring of therapeutic response. Following the tremendous success of metabolic imaging by positron emission tomography, which already plays major roles in clinical oncology, the added value of HP 13 C MRI is emerging. Aberrant glycolysis and central carbon metabolism is a hallmark of many forms of cancer. The chemical transformations associated with these pathways produce metabolites ranging in general from three to six carbons, and are dependent on the redox state and energy charge of the tissue...
June 5, 2018: NMR in Biomedicine
https://www.readbyqxmd.com/read/29867713/cerebral-lactate-concentration-in-neonatal-hypoxic-ischemic-encephalopathy-in-relation-to-time-characteristic-of-injury-and-serum-lactate-concentration
#3
Tai-Wei Wu, Benita Tamrazi, Kai-Hsiang Hsu, Eugenia Ho, Aaron J Reitman, Matthew Borzage, Stefan Blüml, Jessica L Wisnowski
Background: Cerebral lactate concentration can remain detectable in neonatal hypoxic-ischemic encephalopathy (HIE) after hemodynamic stability. The temporal resolution of regional cerebral lactate concentration in relation to the severity or area of injury is unclear. Furthermore, the interplay between serum and cerebral lactate in neonatal HIE has not been well defined. The study aims to describe cerebral lactate concentration in neonatal HIE in relation to time, injury, and serum lactate...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29861855/co-imaging-of-the-tumor-oxygenation-and-metabolism-using-electron-paramagnetic-resonance-imaging-and-13-c-hyperpolarized-magnetic-resonance-imaging-before-and-after-irradiation
#4
Masayuki Matsuo, Tatsuya Kawai, Shun Kishimoto, Keita Saito, Jeeva Munasinghe, Nallathamby Devasahayam, James B Mitchell, Murali C Krishna
To examine the relationship between local oxygen partial pressure and energy metabolism in the tumor, electron paramagnetic resonance imaging (EPRI) and magnetic resonance imaging (MRI) with hyperpolarized [1-13 C] pyruvate were performed. SCCVII and HT29 solid tumors implanted in the mouse leg were imaged by EPRI using OX063, a paramagnetic probe and 13 C-MRI using hyperpolarized [1-13 C] pyruvate. Local partial oxygen pressure and pyruvate metabolism in the two tumor implants were examined. The effect of a single dose of 5-Gy irradiation on the pO2 and metabolism was also investigated by sequential imaging of EPRI and 13 C-MRI in HT29 tumors...
May 18, 2018: Oncotarget
https://www.readbyqxmd.com/read/29849091/the-13-c-hyperpolarized-pyruvate-generated-by-parahydrogen-detects-the-response-of-the-heart-to-altered-metabolism-in-real-time
#5
Eleonora Cavallari, Carla Carrera, Matteo Sorge, Gisèle Bonne, Antoine Muchir, Silvio Aime, Francesca Reineri
Many imaging methods have been proposed to act as surrogate markers of organ damage, yet for many candidates the essential biomarkers characteristics of the injured organ have not yet been described. Hyperpolarized [1-13 C]pyruvate allows real time monitoring of metabolism in vivo. ParaHydrogen Induced Polarization (PHIP) is a portable, cost effective technique able to generate 13 C MR hyperpolarized molecules within seconds. The introduction of the Side Arm Hydrogenation (SAH) strategy offered a way to widen the field of PHIP generated systems and to make this approach competitive with the currently applied dissolution-DNP (Dynamic Nuclear Polarization) method...
May 30, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29848524/toe-walking-after-three-how-serious-could-it-be
#6
Linda-Marie Ustaris, Roberta Seidman, Tejwant Bindra, Ratna Basak
A 4-year-old girl with no significant medical or family history presented with toe walking, leg pain, unsteady gait and frequent falls for 2 months. Examination revealed upper motor neuron signs in the lower extremities. Laboratory tests were normal including creatinephosphokinase and lactate dehydrogenase. Brain and lumbar spine MRI were normal. MRI cervical and thoracic spine showed a large intradural and extradural mass arising from the right C7 nerve root, widening of the neural canal with evidence of cord compression...
May 30, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29803387/combined-hyperpolarized-13-c-pyruvate-mrs-and-18-f-fdg-pet-hyperpet-estimates-of-glycolysis-in-canine-cancer-patients
#7
Adam E Hansen, Henrik Gutte, Pernille Holst, Helle H Johannesen, Sofie Rahbek, Andreas E Clemmensen, Majbritt M E Larsen, Christina Schøier, Jan Ardenkjaer-Larsen, Thomas L Klausen, Annemarie T Kristensen, Andreas Kjaer
13 C Magnetic Resonance Spectroscopy (MRS) using hyperpolarized 13 C-labeled pyruvate as a substrate offers a measure of pyruvate-lactate interconversion and is thereby a marker of the elevated aerobic glycolysis (Warburg effect) generally exhibited by cancer cells. Here, we aim to compare hyperpolarized [1-13 C]pyruvate MRS with simultaneous 18 F-2-fluoro-2-deoxy-d-glucose (FDG) PET in a cross-sectional study of canine cancer patients. METHODS: Canine cancer patients underwent integrated PET/MRI using a clinical whole-body system...
June 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/29797529/physical-deconditioning-is-the-common-denominator-in-both-obese-and-overweight-subjects-with-nonalcoholic-steatohepatitis
#8
C K Argo, J G Stine, Z H Henry, C Lackner, J T Patrie, A L Weltman, S H Caldwell
BACKGROUND: Obesity and decreased physical activity mirror increasing prevalence of nonalcoholic fatty liver disease (NAFLD). AIM: We aimed to investigate associations between aerobic fitness, anthropometrics and disease parameters in patients with nonalcoholic steatohepatitis (NASH). We hypothesised that NASH subjects have lower aerobic power and capacity than untrained, sedentary, normal subjects. METHODS: Forty subjects (60% obese, 40% overweight) with biopsy-confirmed NASH and NAFLD activity score (NAS) ≥4 were enrolled in a clinical trial where anthropometrics, laboratories, liver fat content by MRI, activity, and aerobic fitness by cycle ergometry data were obtained...
May 24, 2018: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29795055/role-of-immuno-polymerase-chain-reaction-i-pcr-in-resolving-diagnostic-dilemma-between-tuberculoma-and-neurocysticercosis-a-case-report
#9
Sonia Ahlawat, Surekha Dabla, Vinay Kumar, Machiavelli Singh, Kiran Bala, Promod K Mehta
BACKGROUND Tuberculoma and neurocysticercosis (NCC) often show similar clinical and neuroimaging features. Differential diagnosis of these 2 diseases is imperative, as tuberculoma is an active infection that requires immediate anti-tubercular therapy (ATT). CASE REPORT We present the case of a 17-year-old Indian girl with fever, severe headache, and right 6th cranial nerve palsy. Brain magnetic resonance imaging (MRI) showed multiple tiny ring-enhancing lesions in bilateral cerebral parenchyma with mild perilesional edema, which were initially thought to be NCC, but subsequently were diagnosed as brain tuberculomas...
May 24, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29792309/metabolic-and-physiologic-imaging-biomarkers-of-the-tumor-microenvironment-predict-treatment-outcome-with-radiation-or-a-hypoxia-activated-prodrug-in-mice
#10
Shingo Matsumoto, Shun Kishimoto, Keita Saito, Yoichi Takakusagi, Jeeva P Munasinghe, Nallathamby Devasahayam, Charles Hart, Robert J Gillies, James B Mitchell, Murali C Krishna
Pancreatic ductal adenocarcinoma (PDAC) is characterized by hypoxic niches that lead to treatment resistance. Therefore, studies of tumor oxygenation and metabolic profiling should contribute to improved treatment strategies. Here we define two imaging biomarkers that predict differences in tumor response to therapy: 1) partial oxygen pressure (pO2), measured by EPR imaging; and 2) [1-13C] pyruvate metabolism rate, measured by hyperpolarized 13C MRI. Three human PDAC xenografts with varying treatment sensitivity (Hs766t, MiaPaCa-2, and Su...
May 23, 2018: Cancer Research
https://www.readbyqxmd.com/read/29769199/metabolic-imaging-of-the-human-brain-with-hyperpolarized-13c-pyruvate-demonstrates-13c-lactate-production-in-brain-tumor-patients
#11
Vesselin Z Miloushev, Kristin L Granlund, Rostislav Boltyanskiy, Serge K Lyashchenko, Lisa M DeAngelis, Ingo K Mellinghoff, Cameron W Brennan, Viviane Tabar, T Jonathan Yang, Andrei I Holodny, Ramon E Sosa, YanWei W Guo, Albert P Chen, James Tropp, Fraser Robb, Kayvan R Keshari
Hyperpolarized (HP) magnetic resonance imaging using [1-13C] pyruvate is a novel method that can characterize energy metabolism in the human brain and brain tumors. Here we present the first dynamically acquired human brain HP 13C metabolic spectra and spatial metabolite maps in cases of both untreated and recurrent tumors. In vivo production of HP lactate from HP pyruvate by tumors was indicative of altered cancer metabolism, while production of HP lactate in the entire brain was likely due to baseline metabolism...
May 16, 2018: Cancer Research
https://www.readbyqxmd.com/read/29755188/comparison-between-cerebrospinal-fluid-and-serum-lactate-concentrations-in-neurologic-dogs-with-and-without-structural-intracranial-disease
#12
Leontine Benedicenti, Giacomo Gianotti, Evelyn M Galban
The objectives of this study were to investigate the relationship between cerebrospinal fluid lactate and serum concentrations in dogs with clinical signs of central nervous system disease and to establish if cerebrospinal fluid lactate (CSF) concentrations are higher in dogs with structural intracranial disease (Group Pos-MRI) compared to dogs that have clinical signs of intracranial disease but no structural brain disease (Group Neg-MRI) based on magnetic resonance imaging (MRI) findings. Using a prospective study canine blood and cerebrospinal fluid were collected in 24 dogs with neurological signs after undergoing brain MRI...
April 2018: Canadian Journal of Veterinary Research, Revue Canadienne de Recherche Vétérinaire
https://www.readbyqxmd.com/read/29749055/aars2-related-ovarioleukodystrophy-clinical-and-neuroimaging-features-of-three-new-cases
#13
I Taglia, I Di Donato, S Bianchi, A Cerase, L Monti, R Marconi, A Orrico, A Rufa, A Federico, M T Dotti
INTRODUCTION: Adult-onset leukoencephalopathy with axonal spheroids and pigmented glia (ALSP), previously known as hereditary diffuse leukoencephalopathy with axonal spheroids (HDLS) or pigmentary orthochromatic leukodystrophy (POLD), is the most frequent non-vascular adult-onset leukoencephalopathy. It is caused by autosomal dominant mutations in CSF1R gene. Recently, also autosomal recessive mutations in AARS2 gene were found to be the cause of an adult-onset leukodystrophy with axonal spheroids...
May 10, 2018: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/29729532/how-do-we-diagnose-and-treat-epilepsy-with-myoclonic-atonic-seizures-doose-syndrome-results-of-the-pediatric-epilepsy-research-consortium-survey
#14
Katherine Nickels, Ronald Thibert, Stephanie Rau, Scott Demarest, Elaine Wirrell, Eric H Kossoff, Charuta Joshi, Srishti Nangia, Renee Shellhaas
OBJECTIVE: To obtain and assess opinions on EMAS diagnostic criteria, recommended investigations, and therapeutic options, from a large group of physicians who care for children with EMAS. METHODS: The EMAS focus group of PERC created a survey to assess the opinions of pediatric neurologists who care for children with EMAS regarding diagnosis and treatment of this condition, which was sent to members of PERC, AES, and CNS. A Likert scale was used to assess the respondents' opinions on the importance of diagnostic and exclusion criteria (five point scale), investigations (four point scale), and treatment (six point scale) of EMAS...
August 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29726563/late-stage-deuteration-of-13-c-enriched-substrates-for-t-1-prolongation-in-hyperpolarized-13-c-mri
#15
Céline Taglang, David E Korenchan, Cornelius von Morze, Justin Yu, Chloé Najac, Sinan Wang, Joseph E Blecha, Sukumar Subramaniam, Robert Bok, Henry F VanBrocklin, Daniel B Vigneron, Sabrina M Ronen, Renuka Sriram, John Kurhanewicz, David M Wilson, Robert R Flavell
A robust and selective late-stage deuteration methodology was applied to 13C-enriched amino and alpha hydroxy acids to increase spin-lattice relaxation constant T1 for hyperpolarized 13C magnetic resonance imaging. For the five substrates with 13C-labeling on the C1-position ([1-13C]alanine, [1-13C]serine, [1-13C]lactate, [1-13C]glycine, and [1-13C]valine), significant increase of their T1 was observed at 3 T with deuterium labeling (+26%, 22%, +16%, +25% and +29%, respectively). Remarkably, in the case of [2-13C]alanine, [2-13C]serine and [2-13C]lactate, deuterium labeling led to a greater than four fold increase in T1...
May 4, 2018: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29719854/intravoxel-incoherent-motion-ivim-and-non-gaussian-diffusion-mri-of-the-lactating-breast
#16
Mami Iima, Masako Kataoka, Rena Sakaguchi, Shotaro Kanao, Natsuko Onishi, Makiko Kawai, Akane Ohashi, Katsutoshi Murata, Kaori Togashi
Purpose: To investigate the effect of breastfeeding on IVIM and non-Gaussian diffusion MRI in the breast. Materials and methods: An IRB approved prospective study enrolled seventeen volunteers (12 in lactation and 5 with post-weaning, range 31-43 years; mean 35.4 years). IVIM (fIVIM and D*) and non-Gaussian diffusion (ADC0 and K) parameters using 16 b values, plus synthetic apparent diffusion coefficients (sADCs) from 2 key b values (b = 200 and 1500 s/mm2 ) were calculated using regions of interest...
2018: European Journal of Radiology Open
https://www.readbyqxmd.com/read/29662077/pharmacodynamics-of-mutant-idh1-inhibitors-in-glioma-patients-probed-by-in-vivo-3d-mrs-imaging-of-2-hydroxyglutarate
#17
Ovidiu C Andronesi, Isabel C Arrillaga-Romany, K Ina Ly, Wolfgang Bogner, Eva M Ratai, Kara Reitz, A John Iafrate, Jorg Dietrich, Elizabeth R Gerstner, Andrew S Chi, Bruce R Rosen, Patrick Y Wen, Daniel P Cahill, Tracy T Batchelor
Inhibitors of the mutant isocitrate dehydrogenase 1 (IDH1) entered recently in clinical trials for glioma treatment. Mutant IDH1 produces high levels of 2-hydroxyglurate (2HG), thought to initiate oncogenesis through epigenetic modifications of gene expression. In this study, we show the initial evidence of the pharmacodynamics of a new mutant IDH1 inhibitor in glioma patients, using non-invasive 3D MR spectroscopic imaging of 2HG. Our results from a Phase 1 clinical trial indicate a rapid decrease of 2HG levels by 70% (CI 13%, P = 0...
April 16, 2018: Nature Communications
https://www.readbyqxmd.com/read/29575569/clinical-biochemical-and-genetic-features-of-four-patients-with-short-chain-enoyl-coa-hydratase-echs1-deficiency
#18
Patricia E Fitzsimons, Charlotte L Alston, Penelope E Bonnen, Joanne Hughes, Ellen Crushell, Michael T Geraghty, Martine Tetreault, Peter O'Reilly, Eilish Twomey, Yusra Sheikh, Richard Walsh, Hans R Waterham, Sacha Ferdinandusse, Ronald J A Wanders, Robert W Taylor, James J Pitt, Philip D Mayne
Short-chain enoyl-CoA hydratase (SCEH or ECHS1) deficiency is a rare inborn error of metabolism caused by biallelic mutations in the gene ECHS1 (OMIM 602292). Clinical presentation includes infantile-onset severe developmental delay, regression, seizures, elevated lactate, and brain MRI abnormalities consistent with Leigh syndrome (LS). Characteristic abnormal biochemical findings are secondary to dysfunction of valine metabolism. We describe four patients from two consanguineous families (one Pakistani and one Irish Traveler), who presented in infancy with LS...
May 2018: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29572891/link-between-gut-microbiome-derived-metabolite-and-shared-gene-effects-with-hepatic-steatosis-and-fibrosis-in-nafld
#19
Cyrielle Caussy, Cynthia Hsu, Min-Tzu Lo, Amy Liu, Ricki Bettencourt, Veeral H Ajmera, Shirin Bassirian, Jonathan Hooker, Ethan Sy, Lisa Richards, Nicholas Schork, Bernd Schnabl, David A Brenner, Claude B Sirlin, Chi-Hua Chen, Rohit Loomba
Previous studies have shown that gut-microbiome is associated with nonalcoholic fatty liver disease (NAFLD). We aimed to examine if serum metabolites, especially those derived from the gut-microbiome, have a shared gene-effect with hepatic steatosis and fibrosis. This is a cross-sectional analysis of a prospective discovery cohort including 156 well-characterized twins and families with untargeted metabolome profiling assessment. Hepatic steatosis was assessed using magnetic-resonance-imaging proton-density-fat-fraction (MRI-PDFF) and fibrosis using MR-elastography (MRE)...
March 23, 2018: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29567434/using-a-local-low-rank-plus-sparse-reconstruction-to-accelerate-dynamic-hyperpolarized-13-c-imaging-using-the-bssfp-sequence
#20
Eugene Milshteyn, Cornelius von Morze, Galen D Reed, Hong Shang, Peter J Shin, Peder E Z Larson, Daniel B Vigneron
Acceleration of dynamic 2D (T2 Mapping) and 3D hyperpolarized 13 C MRI acquisitions using the balanced steady-state free precession sequence was achieved with a specialized reconstruction method, based on the combination of low rank plus sparse and local low rank reconstructions. Methods were validated using both retrospectively and prospectively undersampled in vivo data from normal rats and tumor-bearing mice. Four-fold acceleration of 1-2 mm isotropic 3D dynamic acquisitions with 2-5 s temporal resolution and two-fold acceleration of 0...
May 2018: Journal of Magnetic Resonance
keyword
keyword
60266
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"