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https://www.readbyqxmd.com/read/27898305/view-aligned-hypergraph-learning-for-alzheimer-s-disease-diagnosis-with-incomplete-multi-modality-data
#1
Mingxia Liu, Jun Zhang, Pew-Thian Yap, Dinggang Shen
Effectively utilizing incomplete multi-modality data for the diagnosis of Alzheimer's disease (AD) and its prodrome (i.e., mild cognitive impairment, MCI) remains an active area of research. Several multi-view learning methods have been recently developed for AD/MCI diagnosis by using incomplete multi-modality data, with each view corresponding to a specific modality or a combination of several modalities. However, existing methods usually ignore the underlying coherence among views, which may lead to sub-optimal learning performance...
November 16, 2016: Medical Image Analysis
https://www.readbyqxmd.com/read/27847118/cap-inflammation-leads-to-higher-plaque-cap-strain-and-lower-cap-stress-an-mri-pet-ct-based-fsi-modeling-approach
#2
Dalin Tang, Chun Yang, Sarayu Huang, Venkatesh Mani, Jie Zheng, Pamela K Woodard, Philip Robson, Zhongzhao Teng, Marc Dweck, Zahi A Fayad
Plaque rupture may be triggered by extreme stress/strain conditions. Inflammation is also implicated and can be imaged using novel imaging techniques. The impact of cap inflammation on plaque stress/strain and flow shear stress were investigated. A patient-specific MRI-PET/CT-based modeling approach was used to develop 3D fluid-structure interaction models and investigate the impact of inflammation on plaque stress/strain conditions for better plaque assessment. 18FDG-PET/CT and MRI data were acquired from 4 male patients (average age: 66) to assess plaque characteristics and inflammation...
November 11, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27806705/neuroimaging-in-vascular-cognitive-impairment-a-state-of-the-art-review
#3
REVIEW
Wolf-Dieter Heiss, Gary A Rosenberg, Alexander Thiel, Rok Berlot, Jacques de Reuck
Imaging is critical in the diagnosis and treatment of dementia, particularly in vascular cognitive impairment, due to the visualization of ischemic and hemorrhagic injury of gray and white matter. Magnetic resonance imaging (MRI) and positron emission tomography (PET) provide structural and functional information. Clinical MRI is both generally available and versatile - T2-weighted images show infarcts, FLAIR shows white matter changes and lacunar infarcts, and susceptibility-weighted images reveal microbleeds...
November 3, 2016: BMC Medicine
https://www.readbyqxmd.com/read/27776644/hybrid-imaging-for-detection-of-carcinoma-of-unknown-primary-a-preliminary-comparison-trial-of-whole-body-pet-mri-versus-pet-ct
#4
Verena Ruhlmann, Marcus Ruhlmann, Alexander Bellendorf, Johannes Grueneisen, Lino M Sawicki, Hong Grafe, Michael Forsting, Andreas Bockisch, Lale Umutlu
PURPOSE: The aim of this study is to evaluate and compare the diagnostic potential of integrated whole-body [18F]FDG-PET/MRI to [18F]FDG-PET/CT for detection of a potential primary cancer and metastases in patients suspected for cancer of unknown primary (CUP). METHODS: A total of 20 patients (15 male, 5 female, age 53±13 years) suspect for CUP underwent a dedicated head and neck & whole-body [18F]FDG-PET/CT (Biograph mCT 128, Siemens Healthcare) and a subsequent simultaneous [18F]FDG-PET/MRI examination (Biograph mMR, Siemens Healthcare)...
November 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27760860/imaging-of-microglial-activation-in-ms-using-pet-research-use-and-potential-future-clinical-application
#5
Laura Airas, Eero Rissanen, Juha Rinne
Multiple sclerosis (MS) is a complex disease, where several processes can be selected as a target for positron emission topography (PET) imaging. Unlike magnetic resonance imaging (MRI), PET provides specific and quantitative information, and unlike neuropathology, it can be non-invasively applied to living patients, which enables longitudinal follow-up of the MS pathology. In the study of MS, PET can be useful for in vivo evaluation of specific pathological characteristics at various stages of the disease...
October 19, 2016: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/27752772/detection-of-vertebral-metastases-a-meta-analysis-comparing-mri-ct-pet-bs-and-bs-with-spect
#6
Tao Liu, Shenghao Wang, Hao Liu, Bin Meng, Feng Zhou, Fan He, Xiaojian Shi, Huilin Yang
OBJECTIVE: To perform a meta-analysis to compare the diagnostic value of magnetic resonance imaging (MRI), computed tomography (CT), positron emission tomography (PET), bone scintigraphy (BS) and BS with single-photon emission computed tomography (SPECT) in detecting vertebral metastases. METHODS: Relevant original articles published from January 1995 to December 2015 were searched. Two reviewers independently extracted data. Software called "META-DiSc" was used to obtain pooled estimates of sensitivity, specificity, diagnostic odds ratio (DOR) and summary receiver operating characteristic (SROC) curves...
October 17, 2016: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/27732917/temporal-lobe-origin-is-common-in-patients-who-have-undergone-epilepsy-surgery-for-hypermotor-seizures
#7
Amir M Arain, Nabil J Azar, Andre H Lagrange, Michael McLean, Pradumna Singh, Hasan Sonmezturk, Peter Konrad, Joseph Neimat, Bassel Abou-Khalil
RATIONALE: Hypermotor seizures are most often reported from the frontal lobe but may also have temporal, parietal, or insular origin. We noted a higher proportion of patients with temporal lobe epilepsy in our surgical cohort who had hypermotor seizures. We evaluated the anatomic localization and surgical outcome in patient with refractory hypermotor seizures who had epilepsy surgery in our center. METHODS: We identified twenty three patients with refractory hypermotor seizures from our epilepsy surgery database...
October 9, 2016: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/27725679/imaging-biomarker-roadmap-for-cancer-studies
#8
James P B O'Connor, Eric O Aboagye, Judith E Adams, Hugo J W L Aerts, Sally F Barrington, Ambros J Beer, Ronald Boellaard, Sarah E Bohndiek, Michael Brady, Gina Brown, David L Buckley, Thomas L Chenevert, Laurence P Clarke, Sandra Collette, Gary J Cook, Nandita M deSouza, John C Dickson, Caroline Dive, Jeffrey L Evelhoch, Corinne Faivre-Finn, Ferdia A Gallagher, Fiona J Gilbert, Robert J Gillies, Vicky Goh, John R Griffiths, Ashley M Groves, Steve Halligan, Adrian L Harris, David J Hawkes, Otto S Hoekstra, Erich P Huang, Brian F Hutton, Edward F Jackson, Gordon C Jayson, Andrew Jones, Dow-Mu Koh, Denis Lacombe, Philippe Lambin, Nathalie Lassau, Martin O Leach, Ting-Yim Lee, Edward L Leen, Jason S Lewis, Yan Liu, Mark F Lythgoe, Prakash Manoharan, Ross J Maxwell, Kenneth A Miles, Bruno Morgan, Steve Morris, Tony Ng, Anwar R Padhani, Geoff J M Parker, Mike Partridge, Arvind P Pathak, Andrew C Peet, Shonit Punwani, Andrew R Reynolds, Simon P Robinson, Lalitha K Shankar, Ricky A Sharma, Dmitry Soloviev, Sigrid Stroobants, Daniel C Sullivan, Stuart A Taylor, Paul S Tofts, Gillian M Tozer, Marcel van Herk, Simon Walker-Samuel, James Wason, Kaye J Williams, Paul Workman, Thomas E Yankeelov, Kevin M Brindle, Lisa M McShane, Alan Jackson, John C Waterton
Imaging biomarkers (IBs) are integral to the routine management of patients with cancer. IBs used daily in oncology include clinical TNM stage, objective response and left ventricular ejection fraction. Other CT, MRI, PET and ultrasonography biomarkers are used extensively in cancer research and drug development. New IBs need to be established either as useful tools for testing research hypotheses in clinical trials and research studies, or as clinical decision-making tools for use in healthcare, by crossing 'translational gaps' through validation and qualification...
October 11, 2016: Nature Reviews. Clinical Oncology
https://www.readbyqxmd.com/read/27648374/feasibility-of-carotid-artery-pet-mri-in-psoriasis-patients
#9
Prabhakar Rajiah, Mojgan Hojjati, Ziang Lu, Vijaya Kosaraju, Sasan Partovi, James K O'Donnell, Christopher Longenecker, Grace A McComsey, Jackelyn B Golden, Fuad Muakkassa, Scott Santilli, Thomas S McCormick, Kevin D Cooper, Neil J Korman
We report our initial experience of performing integrated PET/MR imaging of the carotid arteries in psoriatic patients. Eleven patients with psoriasis and ten controls underwent carotid PET/MRI. Following injection of the FDG tracer, 3d T1w gradient echo sequence (atMR) was obtained for attenuation correction of PET data. High resolution images of carotid artery were then obtained, including pre-and post-contrast T1-w, T2-w and proton-density images as well as TOF images followed by PET imaging of the torso...
2016: American Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27631326/diagnostic-accuracy-of-different-imaging-modalities-following-computed-tomography-ct-scanning-for-assessing-the-resectability-with-curative-intent-in-pancreatic-and-periampullary-cancer
#10
Domenico Tamburrino, Deniece Riviere, Mohammad Yaghoobi, Brian R Davidson, Kurinchi Selvan Gurusamy
BACKGROUND: Periampullary cancer includes cancer of the head and neck of the pancreas, cancer of the distal end of the bile duct, cancer of the ampulla of Vater, and cancer of the second part of the duodenum. Surgical resection is the only established potentially curative treatment for pancreatic and periampullary cancer. A considerable proportion of patients undergo unnecessary laparotomy because of underestimation of the extent of the cancer on computed tomography (CT) scanning. Other imaging methods such as magnetic resonance imaging (MRI), positron emission tomography (PET), PET-CT, and endoscopic ultrasound (EUS) have been used to detect local invasion or distant metastases not visualised on CT scanning which could prevent unnecessary laparotomy...
September 15, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27610127/heterogeneous-multimodal-biomarkers-analysis-for-alzheimer-s-disease-via-bayesian-network
#11
Yan Jin, Yi Su, Xiao-Hua Zhou, Shuai Huang
By 2050, it is estimated that the number of worldwide Alzheimer's disease (AD) patients will quadruple from the current number of 36 million, while no proven disease-modifying treatments are available. At present, the underlying disease mechanisms remain under investigation, and recent studies suggest that the disease involves multiple etiological pathways. To better understand the disease and develop treatment strategies, a number of ongoing studies including the Alzheimer's Disease Neuroimaging Initiative (ADNI) enroll many study participants and acquire a large number of biomarkers from various modalities including demographic, genotyping, fluid biomarkers, neuroimaging, neuropsychometric test, and clinical assessments...
December 2016: EURASIP Journal on Bioinformatics & Systems Biology
https://www.readbyqxmd.com/read/27558211/accuracy-of-a-new-diagnostic-tool-in-deep-infiltrating-endometriosis-positron-emission-tomography-computed-tomography-with-16%C3%AE-18f-fluoro-17%C3%AE-estradiol
#12
Stefano Cosma, Matteo Salgarello, Marcello Ceccaroni, Giancarlo Gorgoni, Francesca Riboni, Ernesto La Paglia, Saverio Danese, Chiara Benedetto
AIM: Preoperative workup of deep infiltrating endometriosis is limited in the evaluation of extragenital and extrapelvic disease and in distinguishing between the previous surgical scar and active lesion. Histological verification remains the gold standard for diagnosis. The aim of this study was therefore to evaluate positron emission tomography-computed tomography (PET/CT) with an experimental estrogen receptor tracer (16α-[18F]fluoro-17β-estradiol; [18F]FES) for accurate staging and non-invasive diagnosis of the disease...
August 24, 2016: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/27500381/long-term-outcome-characteristics-in-mesial-temporal-lobe-epilepsy-with-and-without-associated-cortical-dysplasia
#13
B Schmeiser, T Hammen, B J Steinhoff, J Zentner, A Schulze-Bonhage
OBJECT: The intention of our study was to identify predictive characteristics for long-term seizure control and running down phenomenon after surgical treatment of pharmacoresistant mesiotemporal lobe epilepsy (mTLE) with and without associated cortical dysplasia. MATERIALS AND METHODS: Our study comprises a consecutive series of 458 patients who underwent surgical treatment for intractable mTLE at the Epilepsy Center Freiburg. Data evaluated included semiology, duration and frequency of seizures, results of presurgical diagnostics including video-EEG monitoring, MRI, PET and SPECT as well as postoperative seizure outcome...
October 2016: Epilepsy Research
https://www.readbyqxmd.com/read/27453565/functional-brain-imaging-of-episodic-memory-decline-in-ageing
#14
L Nyberg
The episodic long-term memory system supports remembering of events. It is considered to be the most age-sensitive system, with an average onset of decline around 60 years of age. However, there is marked interindividual variability, such that some individuals show faster than average change and others show no or very little change. This variability may be related to the risk of developing dementia, with elevated risk for individuals with accelerated episodic memory decline. Brain imaging with functional magnetic resonance imaging (MRI) of blood oxygen level-dependent (BOLD) signalling or positron emission tomography (PET) has been used to reveal the brain bases of declining episodic memory in ageing...
July 25, 2016: Journal of Internal Medicine
https://www.readbyqxmd.com/read/27356689/diagnostic-performance-of-whole-body-diffusion-weighted-imaging-compared-to-pet-ct-plus-brain-mri-in-staging-clinically-resectable-lung-cancer
#15
Katsuo Usuda, Motoyasu Sagawa, Sumiko Maeda, Nozomu Motono, Makoto Tanaka, Yuichiro Machida, Takuma Matsui Munetaka Matoba, Naoto Watanabe, Hisao Tonami, Yoshimichi Ueda, Hidetaka Uramoto
BACKGROUND: Precise staging of lung cancer is usually evaluated by PET-CT and brain MRI. Recently, however, whole-body diffusion-weighted magnetic resonance imaging (WB-DWI) has be applied. The aim of this study is to determine whether the diagnostic performance of lung cancer staging by WB-DWI is superior to that of PET-CT+brain MRI. MATERIALS AND METHODS: PET-CT + brain MRI and WB-DWI were used for lung cancer staging before surgery with 59 adenocarcinomas, 16 squamous cell carcinomas and 6 other carcinomas...
2016: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/27294540/toward-carbon-nanotube-based-imaging-agents-for-the-clinic
#16
REVIEW
Mayra Hernández-Rivera, Nicholas G Zaibaq, Lon J Wilson
Among the many applications for carbon nanotubes (CNTs), their use in medicine has drawn special attention due to their potential for a variety of therapeutic and diagnostic applications. As progress toward clinical applications continues, monitoring CNTs in vivo will be essential to evaluate their biodistribution, potential toxicity, therapeutic activity, and any physiological changes that the material may induce in specific tissues. There are many different imaging modalities to visualize and track CNTs in vivo, yet only a few are full-body penetrating, a central characteristic that widens their clinical utility...
September 2016: Biomaterials
https://www.readbyqxmd.com/read/27285538/safe-long-term-repeated-disruption-of-the-blood-brain-barrier-using-an-implantable-ultrasound-device-a-multiparametric-study-in-a-primate-model
#17
Catherine Horodyckid, Michael Canney, Alexandre Vignot, Raphael Boisgard, Aurélie Drier, Gilles Huberfeld, Chantal François, Annick Prigent, Mathieu D Santin, Clovis Adam, Jean-Claude Willer, Cyril Lafon, Jean-Yves Chapelon, Alexandre Carpentier
OBJECTIVE The main limitation to the efficacy of chemotherapy for brain tumors is the restricted access to the brain because of the limited permeability of the blood-brain barrier (BBB). Previous animal studies have shown that the application of pulsed ultrasound (US), in combination with the intravenous injection of microbubbles, can temporarily disrupt the BBB to deliver drugs that normally cannot reach brain tissue. Although many previous studies have been performed with external focused US transducers, the device described in the current work emits US energy using an unfocused transducer implanted in the skull thickness...
June 10, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27169855/metabolic-correlates-of-the-ictal-interictal-continuum-fdg-pet-during-continuous-eeg
#18
Aaron F Struck, M Brandon Westover, Lance T Hall, Gina M Deck, Andrew J Cole, Eric S Rosenthal
BACKGROUND: Ictal-interictal continuum (IIC) continuous EEG (cEEG) patterns including periodic discharges and rhythmic delta activity are associated with poor outcome and in the appropriate clinical context, IIC patterns may represent "electroclinical" status epilepticus (SE). To clarify the significance of IIC patterns and their relationship to "electrographic" SE, we investigated FDG-PET imaging as a complementary metabolic biomarker of SE among patients with IIC patterns. METHODS: A single-center prospective clinical database was ascertained for patients undergoing FDG-PET during cEEG...
June 2016: Neurocritical Care
https://www.readbyqxmd.com/read/27144041/bing-neel-syndrome-case-report-a-previously-undocumented-igg-variant-with-mri-pet-ct-and-pet-mri-imaging
#19
Daniel Halperin, Simon Hallam, Athar Haroon, Tom Butler, Samir Agrawal
Waldenstrom's macroglobulinaemia is the most commonly reported subtype of lymphoplasmacytic lymphoma (LPL); it is characterised by IgM secretion. Neurological complications are common usually as a result of hyperviscosity. In rare cases, cells can infiltrate the central nervous system; this is known as Bing-Neel syndrome. We report the case of a 57-year-old male with lymphoplasmacytic lymphoma of the IgG-subtype with neurological symptoms and the consequent finding of lymphoplasmacytoid cells in his cerebrospinal fluid as well as deposits on MRI and PET-CT imaging...
2016: Case Reports in Hematology
https://www.readbyqxmd.com/read/27142382/radiology-of-epiploic-appendages-acute-appendagitis-post-infarcted-appendages-and-imaging-natural-history
#20
REVIEW
S C Eberhardt, C D Strickland, K N Epstein
Our aim was to demonstrate the imaging characteristics of epiploic appendages in native, acute inflamed/ischemic and post-infarcted states through retrospective imaging analysis, with clinical and pathologic correlation, and to discuss clinical implications. Cases were gathered mostly retrospectively and reviewed for inclusion based on established diagnostic criteria. Radiology report text search was used to find cases, using terms "epiploic," "appendage," "appendagitis," and "peritoneal body." Data records included patient demographics, relevant clinical data, lesion size, location and apparent imaging composition, and the presence of change or stability in features over multiple studies...
August 2016: Abdominal Radiology
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