Showing 181 - 200 results of 267 for search '"positron"', query time: 0.06s Refine Results
  1. 181

    Magnetic resonance imaging in primates. The example of the mouse lemur (Microcebus murinus): From detection of pathological aging to therapeutic evaluations by Nelly Joseph-Mathurin, Olene Dorieux, Audrey Kraska, Anne Bertrand, Mathieu Santin, Nadine El Tannir El Tayara, Marc Dhenain

    Published 2011-02-01
    “…Cerebral glucose uptake can be studied in mouse lemurs with other in vivo imaging modalities such as positron emission tomography (PET). In this case, MRI can be used as a support for quantification of radioligand uptake in specific structures. …”
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  2. 182

    Metabolic Differences in Neuroimaging with [<sup>18</sup>F]FDG in Rats Under Isoflurane and Hypnorm–Dormicum by Aage Kristian Olsen Alstrup, Mette Simonsen, Kim Vang Hansen, Caroline C. Real

    Published 2025-01-01
    “…Background: Anesthesia can significantly impact positron emission tomography (PET) neuroimaging in preclinical studies. …”
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  3. 183

    Solid-Pseudopapillary Tumor of the Pancreas: A Single Center Experience by Valentina Beltrame, Gioia Pozza, Enrico Dalla Bona, Alberto Fantin, Michele Valmasoni, Cosimo Sperti

    Published 2016-01-01
    “…In some instances, magnetic resonance, positron emission tomography, and endoscopic ultrasound with aspiration cytology were performed. …”
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  4. 184

    The Advantage of PET and CT Integration in Examination of Lung Tumors by Guangming Lu, Zhongqiu Wang, Hong Zhu, Linfeng Chang, Yingxin Chen, Jiang Wu, Yane Zhao

    Published 2007-01-01
    “…To evaluate the diagnosis value of integrated positron emission tomography and computed tomography (PET/CT) with lung masses, this study emphasized the correlation between tumor size and maximum standardized uptake value (SUVmax) in selected regions of interest (ROI) of lung masses. …”
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  5. 185

    Altered Brain Glucose Consumption in Cogan’s Syndrome by Paolo Mora, Livia Ruffini, Caterina Ghetti, Stella Ghirardini, Maura Scarlattei, Giorgio Baldari, Carla Cidda, Pierangela Rubino, Stefano A. Gandolfi, Jelka G. Orsoni

    Published 2016-01-01
    “…Functional mapping of the CMRglc was obtained by quantitative molecular imaging positron emission tomography, combined with computed tomography (FDG-PET/CT). …”
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  6. 186

    CD7-Positive Diffuse Large B-Cell Lymphoma Presenting as an Intranasal Tumor by Kazuaki Teshima, Masaaki Kume, Yasushi Kawaharada, Takashi Saito, Ko Abe, Sho Ikeda, Hideaki Ohyagi, Megumi Zuguchi, Masashi Zuguchi, Yosuke Kubota, Yoshitaka Enomoto, Masahito Miura, Satsuki Takahashi, Masahiro Saito, Ken Saito, Naoto Takahashi

    Published 2020-01-01
    “…The patient received 6 cycles of R-CHOP plus local radiation therapy because positron emission tomography-computed tomography after R-CHOP revealed an intranasal lesion. …”
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  7. 187

    A Monte Carlo simulation study of the impact of increasing the axial field of view on PET scanner sensitivity with various scintillating crystals by El Ouaridi Abdallah, Ait Elcadi Zakaria, Mkimel Mounir, Bougteb Mustapha, El Baydaoui Redouane

    Published 2025-01-01
    “…This study addresses sensitivity performance, a pivotal parameter of Positron Emission Tomography (PET) imaging, which measures the system’s ability to detect and precisely measure radiotracer signals. …”
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  8. 188

    PET Quantification of Cerebral Oxygen Metabolism in Small Animals by Takashi Temma, Kazuhiro Koshino, Tetsuaki Moriguchi, Jun-ichiro Enmi, Hidehiro Iida

    Published 2014-01-01
    “…Since small animals such as rats are widely used to study various diseases including cerebral ischemia, cerebrovascular diseases, and neurodegenerative diseases, the development of a noninvasive in vivo measurement method of cerebral oxygen metabolic parameters such as oxygen extraction fraction (OEF) and cerebral metabolic rate of oxygen (CMRO2) as well as cerebral blood flow (CBF) and cerebral blood volume (CBV) has been a priority. Although positron emission tomography (PET) with 15O labeled gas tracers has been recognized as a powerful way to evaluate cerebral oxygen metabolism in humans, this method could not be applied to rats due to technical problems and there were no reports of PET measurement of cerebral oxygen metabolism in rats until an 15O-O2 injection method was developed a decade ago. …”
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  9. 189

    Can Met-PET/CT Predict Sporadic Multiglandular Hyperparathyroidism? Report of a Case and Review of the Literature by Andreas Hillenbrand, Johannes Lemke, Doris Henne-Bruns, Ambros J. Beer, Vikas Prasad

    Published 2019-01-01
    “…We analyzed the potential of positron emission tomography/computed tomography (Met-PET/CT) to predict MGD. …”
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  10. 190

    Recurrent Thymic Carcinoma Treated With Median Sternotomy, Innominate Vein Replacement for Superior Vena Cava, and Iodide Implantation: A Case Report and Review of the Literature by Zhong‐zheng Chen, Wen‐dong Qu, Xing‐shu Zhang, Yong‐xiang Song

    Published 2025-01-01
    “…Diagnostic imaging, including positron emission tomography/computed tomography (PET/CT), revealed a malignant anterior mediastinal mass with possible metastasis. …”
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  11. 191

    Review Analysis of the Association between the Prevalence of Activated Brown Adipose Tissue and Outdoor Temperature by Yung-Cheng Huang, Chien-Chin Hsu, Pei-Wen Wang, Yen-Hsiang Chang, Tai-Been Chen, Bi-Fang Lee, Nan-Tsing Chiu

    Published 2012-01-01
    “…Activated BAT is identifiable using F18-fluorodeoxyglucose positron emission tomography/computed tomography (F18-FDG PET/CT). …”
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  12. 192

    Determination of $$\mathcal{C}\mathcal{P}$$ C P -violating HZZ interaction with polarised beams at the ILC by Cheng Li, Gudrid Moortgat-Pick

    Published 2025-01-01
    “…In this paper, we setup a scenario which assumes that the total cross-section is always fixed while $${\mathcal{C}\mathcal{P}}$$ C P -violation is varying, and such a scenario helps us to determine the intrinsic $${\mathcal{C}\mathcal{P}}$$ C P -mixing angle limit around $$|\xi _{\mathcal{C}\mathcal{P}}|\sim 0.03~{\operatorname {rad}}$$ | ξ C P | ∼ 0.03 rad with (90%, 40%) polarised electron-positron beams and 5  $$\hbox {ab}^{-1}$$ ab - 1 integrated luminosity. …”
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  13. 193

    The Number of Frames on ECG-Gated 18F-FDG Small Animal PET Has a Significant Impact on LV Systolic and Diastolic Functional Parameters by Christoph Eissler, Rudolf A. Werner, Paula Arias-Loza, Naoko Nose, Xinyu Chen, Martin G. Pomper, Steven P. Rowe, Constantin Lapa, Andreas K. Buck, Takahiro Higuchi

    Published 2021-01-01
    “…This study is aimed at investigating the impact of frame numbers in preclinical electrocardiogram- (ECG-) gated 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography (PET) on systolic and diastolic left ventricular (LV) parameters in rats. …”
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  14. 194

    Detecting early cognitive deficits in preclinical Alzheimer’s disease using a remote digital multi-day learning paradigm by Roos J. Jutten, Daniel Soberanes, Cassidy P. Molinare, Stephanie Hsieh, Michelle E. Farrell, Aaron S. Schultz, Dorene M. Rentz, Gad A. Marshall, Keith A. Johnson, Reisa A. Sperling, Rebecca E. Amariglio, Kathryn V. Papp

    Published 2025-01-01
    “…Here, we examined BRANCH multi-day learning curves (MDLCs) in 167 cognitively unimpaired older adults (age = 74.3 ± 7.5, 63% female) with different amyloid-β (A) and tau (T) biomarker profiles on positron emission tomography. MDLC scores decreased across ascending biomarker groups, with the A + T- group performing numerically worse (β = –0.24, 95%CI[–0.55,0.07], p = 0.128) and the A + T+ group performing significantly worse (β = –0.58, 95%CI[–1.06,–0.10], p = 0.018) than the A-T- group. …”
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  15. 195

    Primary Hyperparathyroidism-Phosphaturic Mesenchymal Tumour: An Unusual Association and a Probable Syndrome by Gwendolyn Fernandes, Avanika, Gloria Khumanthem

    Published 2025-01-01
    “…A 68-Ga-DOTANOC 3D PET (Positron Emission Tomography) scan revealed a 4.1×3.2×2.5 cm DOTA avid mass in the right thigh. …”
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  16. 196
  17. 197

    Imaging Hepatocellular Carcinoma With Ga-Citrate PET: First Clinical Experience by Carina Mari Aparici MD, Spencer C. Behr MD, Youngho Seo PhD, R. Kate Kelley MD, Carlos Corvera MD, Kenneth T. Gao, Rahul Aggarwal MD, Michael J. Evans PhD

    Published 2017-09-01
    “…To this end, we conducted a patient study to determine whether HCC can be resolved using 68 Ga-citrate positron emission tomography (PET). One patient with recurrent HCC was injected with 300 MBq of 68 Ga-citrate and imaged with PET/CT 249 minutes post injection. …”
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  18. 198

    A case report of successful treatment of advanced thymic squamous cell carcinoma with poor performance status using multimodal therapy by Xianhua Xu, Xiang Yan, Yang Qin, Dan Kou, Qi Huang, Qiongcheng Chen, Yejin Li

    Published 2025-01-01
    “…Computed tomography (CT) and positron emission tomography/computed tomography (PET/CT) scans demonstrated a significant mass in the chest, accompanied by metastasis to adjacent lymph nodes. …”
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  19. 199

    Relationship between Ce3+ 5d1 level, conduction-band bottom, and shallow electron trap level in Gd3Ga5O12:Ce and Gd3Al1Ga4O12:Ce crystals studied via pump-probe absorption spectros... by Mamoru Kitaura, Heishun Zen, Shinta Watanabe, Hirokazu Masai, Kei Kamada, Kyoung-Jin Kim, Akira Yoshikawa, Jumpei Ueda

    Published 2025-02-01
    “…Analysis of the thermally stimulated luminescence (TSL) glow curve determined the trap depth of the electrons in Gd3Al1Ga4O12:Ce. Based on positron annihilation lifetime spectroscopy (PALS), the generation of electron traps was linked to the introduction of vacancy complexes or vacancy aggregates with a negative charge, namely nonstoichiometric compositions. …”
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  20. 200

    Down syndrome with cryptorchidism and retroperitoneal mixed germ cell tumour in an adult patient: a case report and literature review by Qiang Wang, Hai-bin Zhou, Li Ao, Yi Jiang, Xiao-Cong Zhou

    Published 2025-01-01
    “…Fluorine-2-fluoro-2-deoxy-d-glucose (18F-FDG) positron emission tomography/CT examination showed an abnormal increase in the FDG uptake in the parenchymal part of the mass, with a maximum standardised uptake value of approximately 10.5. …”
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