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https://www.readbyqxmd.com/read/29222685/prediction-of-outcome-using-pretreatment-18f-fdg-pet-ct-and-mri-radiomics-in-locally-advanced-cervical-cancer-treated-with-chemoradiotherapy
#1
François Lucia, Dimitris Visvikis, Marie-Charlotte Desseroit, Omar Miranda, Jean-Pierre Malhaire, Philippe Robin, Olivier Pradier, Mathieu Hatt, Ulrike Schick
PURPOSE: The aim of this study is to determine if radiomics features from 18fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) and magnetic resonance imaging (MRI) images could contribute to prognoses in cervical cancer. METHODS: One hundred and two patients (69 for training and 33 for testing) with locally advanced cervical cancer (LACC) receiving chemoradiotherapy (CRT) from 08/2010 to 12/2016 were enrolled in this study. 18F-FDG PET/CT and MRI examination [T1, T2, T1C, diffusion-weighted imaging (DWI)] were performed for each patient before CRT...
December 9, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29218610/feasibility-of-whole-body-diffusion-weighted-mri-for-detection-of-primary-tumour-nodal-and-distant-metastases-in-women-with-cancer-during-pregnancy-a-pilot-study
#2
Sileny N Han, Frédéric Amant, Katrijn Michielsen, Frederik De Keyzer, Steffen Fieuws, Kristel Van Calsteren, Raphaëla C Dresen, Mina Mhallem Gziri, Vincent Vandecaveye
OBJECTIVES: To evaluate the feasibility of whole-body diffusion-weighted MRI (WB-DWI/MRI) for detecting primary tumour, nodal and distant metastases in pregnant women with cancer. METHODS: Twenty pregnant patients underwent WB-DWI/MRI in additional to conventional imaging. Reproducibility of WB-DWI/MRI between two readers was evaluated using Cohen's κ statistics and accuracy was compared to conventional imaging for assessing primary tumour site, nodal and visceral metastases...
December 7, 2017: European Radiology
https://www.readbyqxmd.com/read/29204189/reversible-splenial-lesion-syndrome-resles-coinciding-with-cerebral-venous-thrombosis-a-report-of-two-cases
#3
REVIEW
Jingyi Liu, Dacheng Liu, Bo Yang, Jing Yan, Yuehua Pu, Jing Zhang, Miao Wen, Zhonghua Yang, Liping Liu
A total of two postpartum women with no noteworthy medical history presented with persistent headache. Brain magnetic resonance imaging (MRI) of both revealed extensive cerebral venous thrombosis, concurrently with abnormal signals of the splenium of the corpus callosum (SCC): The splenium appeared hyperintense on T2-weighted sequences, fluid-attenuated inversion recovery (FLAIR), and diffusion-weighted imaging (DWI) imaging, and hypointense on T1 sequences and apparent diffusion coefficient (ADC) map. The patients were given thrombolytic therapy...
December 2017: Therapeutic Advances in Neurological Disorders
https://www.readbyqxmd.com/read/29201499/biparametric-mri-of-the-prostate
#4
REVIEW
Michele Scialpi, Alfredo D'Andrea, Eugenio Martorana, Corrado Maria Malaspina, Maria Cristina Aisa, Maria Napoletano, Emanuele Orlandi, Valeria Rondoni, Pietro Scialpi, Diamante Pacchiarini, Diego Palladino, Michele Dragone, Giancarlo Di Renzo, Annalisa Simeone, Giampaolo Bianchi, Luca Brunese
Biparametric Magnetic Resonance Imaging (bpMRI) of the prostate combining both morphologic T2-weighted imaging (T2WI) and diffusion-weighted imaging (DWI) is emerging as an alternative to multiparametric MRI (mpMRI) to detect, to localize and to guide prostatic targeted biopsy in patients with suspicious prostate cancer (PCa). BpMRI overcomes some limitations of mpMRI such as the costs, the time required to perform the study, the use of gadolinium-based contrast agents and the lack of a guidance for management of score 3 lesions equivocal for significant PCa...
December 2017: Turkish Journal of Urology
https://www.readbyqxmd.com/read/29199055/bone-marrow-involvement-in-malignant-lymphoma-evaluation-of-quantitative-pet-and-mri-biomarkers
#5
Ulrika Asenbaum, Richard Nolz, Georgios Karanikas, Julia Furtner, Ramona Woitek, Ingrid Simonitsch-Klupp, Markus Raderer, Marius E Mayerhoefer
RATIONALE AND OBJECTIVES: This study aimed to determine the diagnostic utility of standardized uptake values (SUV) and apparent diffusion coefficients (ADC) for assessment of focal and diffuse bone marrow involvement in patients with malignant lymphoma. MATERIALS AND METHODS: Sixty treatment-naive patients (28 males; mean age 51.2 ± 16.7 years) with histologically proven lymphoma, who underwent fludeoxyglucose (18F) positron emission tomography-computed tomography ([F18]-FDG-PET/CT) and whole-body diffusion-weighted imaging (WB-DWI) within 7 days, and also routine bone marrow biopsy, were included in this institutional review board-approved, retrospective study...
November 30, 2017: Academic Radiology
https://www.readbyqxmd.com/read/29197852/artery-of-percheron-ischaemic-stroke-revealed-by-brain-mri-dwi-adc-sequences
#6
Jacopo C DiFrancesco
No abstract text is available yet for this article.
December 2, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29191851/dwi-aspects-diffusion-weighted-imaging-alberta-stroke-program-early-computed-tomography-scores-and-dwi-flair-diffusion-weighted-imaging-fluid-attenuated-inversion-recovery-mismatch-in-thrombectomy-candidates-an-intrarater-and-interrater-agreement-study
#7
Robert Fahed, Augustin Lecler, Candice Sabben, Naim Khoury, Célina Ducroux, Vanessa Chalumeau, Daniele Botta, Erwah Kalsoum, William Boisseau, Loïc Duron, Dominique Cabral, Patricia Koskas, Azzedine Benaïssa, Hasmik Koulakian, Michael Obadia, Benjamin Maïer, David Weisenburger-Lile, Bertrand Lapergue, Adrien Wang, Hocine Redjem, Gabriele Ciccio, Stanislas Smajda, Jean-Philippe Desilles, Mikaël Mazighi, Malek Ben Maacha, Inès Akkari, Kevin Zuber, Raphaël Blanc, Jean Raymond, Michel Piotin
BACKGROUND AND PURPOSE: We aimed to study the intrarater and interrater agreement of clinicians attributing DWI-ASPECTS (Diffusion-Weighted Imaging-Alberta Stroke Program Early Computed Tomography Scores) and DWI-FLAIR (Diffusion-Weighted Imaging-Fluid Attenuated Inversion Recovery) mismatch in patients with acute ischemic stroke referred for mechanical thrombectomy. METHODS: Eighteen raters independently scored anonymized magnetic resonance imaging scans of 30 participants from a multicentre thrombectomy trial, in 2 different reading sessions...
November 30, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29190675/in-patients-with-suspected-acute-stroke-ct-perfusion-based-cerebral-blood-flow-maps-cannot-substitute-for-dwi-in-measuring-the-ischemic-core
#8
William A Copen, Albert J Yoo, Natalia S Rost, Lívia T Morais, Pamela W Schaefer, R Gilberto González, Ona Wu
BACKGROUND: Neuroimaging may guide acute stroke treatment by measuring the volume of brain tissue in the irreversibly injured "ischemic core." The most widely accepted core volume measurement technique is diffusion-weighted MRI (DWI). However, some claim that measuring regional cerebral blood flow (CBF) with CT perfusion imaging (CTP), and labeling tissue below some threshold as the core, provides equivalent estimates. We tested whether any threshold allows reliable substitution of CBF for DWI...
2017: PloS One
https://www.readbyqxmd.com/read/29190227/potential-of-noncontrast-magnetic-resonance-imaging-with-diffusion-weighted-imaging-in-characterization-of-breast-lesions-intraindividual-comparison-with-dynamic-contrast-enhanced-magnetic-resonance-imaging
#9
Pascal A T Baltzer, Hubert Bickel, Claudio Spick, Georg Wengert, Ramona Woitek, Panagiotis Kapetas, Paola Clauser, Thomas H Helbich, Katja Pinker
OBJECTIVES: The aim of this study was to assess the potential of noncontrast magnetic resonance imaging (NC-MRI) with diffusion-weighted imaging (DWI) in characterization of breast lesions in comparison to dynamic contrast-enhanced MRI (DCE-MRI) at 3 T. MATERIALS AND METHODS: Consecutive patients with conventional imaging (mammography, ultrasound) BI-RADS 4/5 findings were included in this institutional review board-approved single-center study. All underwent 3 T breast MRI including readout-segmented DWI, DCE, and T2-weighted sequences...
November 22, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/29187686/-portal-systemic-encephalopathy-with-bilateral-thalamic-and-internal-capsule-lesions-using-diffusion-weighted-mri-in-a-super-aged-patient
#10
Michiaki Matsuda, Shinpei Takesako, Mitsuhiro Nakazaki, Toru Nandate, Fujio Umehara
We describe the case of a 90-year-old woman who was hospitalized in July 2016 and subsequently experienced a sudden decline in consciousness level resulting in a state of deep coma. Involuntary movements were not observed, and bilateral Babinski signs were inconclusive. Diffusion-weighted MRI (DWI) of the brain showed bilateral hyperintensity in the thalamus and internal capsule, laboratory testing detected high levels of plasma ammonia, and an electroencephalogram showed delta waves and triphasic waves predominantly in the frontal lobe...
November 28, 2017: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/29184532/early-new-ischemic-lesions-located-outside-the-initially-affected-vascular-territory-appear-more-often-in-stroke-patients-with-elevated-glycated-hemoglobin-hba1c
#11
Tim Bastian Braemswig, Christian H Nolte, Jochen B Fiebach, Tatiana Usnich
Background: Early new ischemic lesions are common in patients with an acute ischemic stroke. These new ischemic lesions may represent the natural course of the initial stroke or de novo events. Objective: We hypothesized that early new ischemic lesions located outside the initially affected vascular territory would point at de novo events. Therefore, we differentiated new ischemic lesions located outside the initially affected vascular territory from those occurring only inside the initially affected vascular territory to identify risk factors that are associated with de novo events...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29183816/evaluation-of-diffusion-weighted-imaging-in-the-context-of-multi-parametric-mri-of-the-prostate-in-the-assessment-of-suspected-low-volume-prostatic-carcinoma
#12
Ioannis Papadopoulos, Jonathan Phillips, Rhodri Evans, Neil Fenn, Sophie Shermer
Data from a multi-parameteric MRI study of patients with possible early-stage prostate cancer was assessed with a view to creating an efficient clinical protocol. Based on a correlation analysis suggesting that diffusion-weighted imaging (DWI) scores are more strongly correlated with overall PIRADS scores than other modalities such as dynamic contrast enhanced imaging or spectroscopy, we investigate the combination of T2-weighted imaging (T2w) and DWI as a potential diagnostic tool for prostate cancer detection, staging and guided biopsies...
November 25, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29179281/-effects-of-different-computed-high-b-values-on-diffusion-weighted-imaging-scores-in-prostate-imaging-reporting-and-data-system-version-2-of-prostate-cancer-in-peripheral-zone
#13
W Wang, Z H Shao, J Q Zeng, D L Wu, G L Wang, P J Wang
Objective: To determine the effects of different computed high b-value on diffusion weighted imaging (DWI) scores in Prostate Imaging Reporting and Data System version 2 (PI-RADS v2) of prostate cancer in peripheral zone. Methods: A retrospective study of 104 cases of prostate cancer in peripheral zone was conducted, all of the patients were histopathologically confirmed by transrectal ultrasound guided saturation biopsy or radical prostatectomy in Tongji Hospital of Tongji University from January 2012 to December 2015...
November 21, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29178616/diffusion-weighted-mri-characteristics-associated-with-prognostic-pathological-factors-and-recurrence-risk-in-invasive-er-her2-breast-cancers
#14
Nita Amornsiripanitch, Vicky T Nguyen, Habib Rahbar, Daniel S Hippe, Vijayakrishna K Gadi, Mara H Rendi, Savannah C Partridge
BACKGROUND: Hormone receptor-positive breast cancer is the most common subtype; better tools to identify which patients in this group would derive clear benefit from chemotherapy are needed. PURPOSE: To evaluate the prognostic potential of diffusion-weighted MRI (DWI) by investigating associations with pathologic biomarkers and a genomic assay for 10-year recurrence risk. STUDY TYPE: Retrospective. SUBJECTS: In all, 107 consecutive patients (from 2/2010 to 1/2013) with estrogen receptor (ER)-positive/HER2neu-negative invasive breast cancer who had the 21-gene recurrence score (RS) test (Oncotype DX, Genomic Health)...
November 27, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29176867/application-of-non-gaussian-water-diffusional-kurtosis-imaging-in-the-assessment-of-uterine-tumors-a-preliminary-study
#15
Aliou Amadou Dia, Masatoshi Hori, Hiromitsu Onishi, Makoto Sakane, Takashi Ota, Takahiro Tsuboyama, Mitsuaki Tatsumi, Tomoyuki Okuaki, Noriyuki Tomiyama
OBJECTIVES: To evaluate the interobserver reliability and value of diffusional kurtosis imaging (DKI) in the assessment of uterine tumors compared with those of conventional diffusion-weighted imaging (DWI). METHODS: This retrospective study was approved by our institutional review board, which waived the requirement for informed consent. Fifty-eight women (mean age: 55.0 ± 13.6 years; range: 30-89 years) with suspected malignant uterine tumors underwent 3-T magnetic resonance imaging using DKI and DWI...
2017: PloS One
https://www.readbyqxmd.com/read/29176469/diffusion-quantification-in-body-imaging
#16
Myles T Taffel, Evan J Johnson, Hersh Chandarana
Diffusion-weighted imaging (DWI) is increasingly incorporated into routine body magnetic resonance imaging protocols. DWI can assist with lesion detection and even in characterization. Quantitative DWI has exhibited promise in the discrimination between benign and malignant pathology, in the evaluation of the biologic aggressiveness, and in the assessment of the response to treatment. Unfortunately, inconsistencies in DWI acquisition parameters and analysis have hampered widespread clinical utilization. Focusing primarily on liver applications, this article will review the basic principles of quantitative DWI...
December 2017: Topics in Magnetic Resonance Imaging: TMRI
https://www.readbyqxmd.com/read/29172199/-clinical-features-of-very-elderly-patients-aged-90-years-or-above-with-acute-ischemic-stroke-a-study-by-using-diffusion-weighted-brain-magnetic-resonance-imaging
#17
Toshiyuki Sakai, Masahide Kondo, Yosuke Kawana, Toshio Nakagawa, Hidekazu Tomimoto
We investigated the diffusion weighted magnetic resonance imaging (DWI) features of 76 very elderly patients aged 90 years or above with acute ischemic stroke. Stroke subtypes were classified into five types according to the Trial of Org 10172 in Acute Stroke Treatment (TOAST) and the Japanese Stroke Databank. The incidence rates of atherothrombotic brain infarction (ATBI), atherothrombotic brain embolism (ATBE), lacunar infarction (LI), cardiogenic brain embolism (CBE) and undetermined type of brain infarction (UTBI) were 2...
November 2017: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/29168672/acute-diffusion-weighted-imaging-lesions-in-cerebral-amyloid-angiopathy-related-convexal-subarachnoid-hemorrhage
#18
Markus Beitzke, Christian Enzinger, Alexander Pichler, Gerit Wünsch, Franz Fazekas
Small acute diffusion-weighted imaging (DWI) lesions can accompany intracerebral hemorrhage due to cerebral amyloid angiopathy (CAA). We therefore examined the occurrence of such lesions in the context of CAA-related convexal subarachnoid hemorrhage (cSAH) both in a cross-sectional and longitudinal manner. DWI lesions were noted in 14/29 (48%) patients at their index cSAH and 12/21 patients (57%) showed acute small DWI lesions at follow-up MRI. Forty-four of 71 (62%) DWI lesions were spatially related to areas of cortical superficial siderosis...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29168005/a-survey-by-the-european-society-of-breast-imaging-on-the-utilisation-of-breast-mri-in-clinical-practice
#19
Paola Clauser, Ritse Mann, Alexandra Athanasiou, Helmut Prosch, Katja Pinker, Matthias Dietzel, Thomas H Helbich, Michael Fuchsjäger, Julia Camps-Herrero, Francesco Sardanelli, Gabor Forrai, Pascal A T Baltzer
OBJECTIVES: While magnetic resonance imaging (MRI) is considered a helpful diagnostic tool in breast imaging, discussions are ongoing about appropriate protocols and indications. The European Society of Breast Imaging (EUSOBI) launched a survey to evaluate the utilisation of breast MRI in clinical practice. METHODS: An online survey reviewed by the EUSOBI board and committees was distributed amongst members. The questions encompassed: training and experience; annual breast MRI and MRI-guided-intervention workload; examination protocols; indications; reporting habits and preferences...
November 22, 2017: European Radiology
https://www.readbyqxmd.com/read/29167951/radioembolization-versus-bland-embolization-for-hepatic-metastases-from-small-intestinal-neuroendocrine-tumors-short-term-results-of-a-randomized-clinical-trial
#20
Anna-Karin Elf, Mats Andersson, Olof Henrikson, Oscar Jalnefjord, Maria Ljungberg, Johanna Svensson, Bo Wängberg, Viktor Johanson
BACKGROUND: Radioembolization (RE) with intra-arterial administration of (90)Y microspheres is a promising technique for the treatment of liver metastases from small intestinal neuroendocrine tumors (SI-NET) not amenable to surgery or local ablation. However, studies comparing RE to other loco-regional therapies are lacking. The aim of this randomized study was to compare the therapeutic response and safety after RE and bland hepatic arterial embolization (HAE), and to investigate early therapy-induced changes with diffusion-weighted MRI (DWI-MRI)...
November 22, 2017: World Journal of Surgery
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