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https://www.readbyqxmd.com/read/28922191/acr-spr-str-practice-parameter-for-the-performance-of-cardiac-positron-emission-tomography-computed-tomography-pet-ct-imaging
#1
Rathan M Subramaniam, Warren R Janowitz, Geoffrey B Johnson, Martin A Lodge, Marguerite T Parisi, Mark R Ferguson, Jeffrey C Hellinger, Gregory W Gladish, Narainder K Gupta
This clinical practice parameter has been developed collaboratively by the American College of Radiology (ACR), the Society for Pediatric Radiology (SPR), and the Society of Thoracic Radiology (STR). This document is intended to act as a guide for physicians performing and interpreting positron emission tomography-computed tomography (PET/CT) of cardiac diseases in adults and children. The primary value of cardiac PET/CT imaging include evaluation of perfusion, function, viability, inflammation, anatomy, and risk stratification for cardiac-related events such as myocardial infarction and death...
September 15, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28922157/longer-term-investigation-of-the-value-of-18f-fdg-pet-and-magnetic-resonance-imaging-for-predicting-the-conversion-of-mild-cognitive-impairment-to-alzheimer-s-disease-a-multicenter-study
#2
Yoshitaka Inui, Kengo Ito, Takashi Kato
BACKGROUND: The value of fluorine-18-fluorodeoxyglucose positron emission tomography (18F-FDG-PET) and magnetic resonance imaging (MRI) for predicting conversion of mild cognitive impairment (MCI) to Alzheimer's disease (AD) in longer-term is unclear. OBJECTIVE: To evaluate longer-term prediction of MCI to AD conversion using 18F-FDG-PET and MRI in a multicenter study. METHODS: One-hundred and fourteen patients with MCI were followed for 5 years...
September 11, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28922150/synthesis-radiosynthesis-and-preliminary-in-vitro-and-in-vivo-evaluation-of-the-fluorinated-ceramide-trafficking-inhibitor-hpa-12-for-brain-applications
#3
Simone M Crivelli, Andreas Paulus, Jozef Markus, Matthias Bauwens, Dusan Berkes, Helga E De Vries, Monique T Mulder, Jochen Walter, Felix M Mottaghy, Mario Losen, Pilar Martinez-Martinez
Ceramide levels are increased in blood and brain tissue of Alzheimer's disease (AD) patients. Since the ceramide transporter protein (CERT) is the only known protein able to mediate non-vesicular transfer of ceramide between organelle membranes, the modulation of CERT function may impact on ceramide accumulation. The competitive CERT inhibitor N-(3-hydroxy-1-hydroxymethyl-3-phenylpropyl) dodecanamide (HPA-12) interferes with ceramide trafficking. To understand the role of ceramide/CERT in AD, HPA-12 can be a useful tool to modulate ceramide trafficking...
September 8, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28921623/one-step-synthesis-of-18-f-cabozantinib-for-use-in-positron-emission-tomography-imaging-of-c-met
#4
Vegard Torp Lien, Jo Klaveness, Dag Erlend Olberg
Cabozantinib is an FDA approved kinase inhibitor for the treatment of medullary thyroid cancer and advanced renal cell carcinoma, which exerts its therapeutic effect by inhibiting, among others, the tyrosine kinase c-Met. Non-invasive imaging techniques are becoming increasingly important clinically to ensure drug efficacy, staging, monitoring and patient stratification. PET isotope labelled tyrosine kinase inhibitors have, for the same reason, potential as PET tracers for imaging of various cancers. Based on cabozantinib, we synthesized the novel boronic acid pinacol ester 4 as a labelling precursor, where the boronic ester moiety replaces the fluorine native to this kinase inhibitor...
September 18, 2017: Journal of Labelled Compounds & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28921596/single-cocaine-exposure-does-not-alter-striatal-presynaptic-dopamine-function-in-mice-an-18-f-fdopa-pet-study
#5
D R Bonsall, M Kokkinou, M Veronese, C Coello, L A Wells, O D Howes
Cocaine is a recreational drug of abuse that binds to the dopamine transporter (DAT), preventing reuptake of dopamine into presynaptic terminals. The increased presence of synaptic dopamine results in stimulation of both pre- and postsynaptic dopamine receptors, considered an important mechanism by which cocaine elicits its reinforcing properties. However, the effects of acute cocaine administration on presynaptic dopamine function remain unclear. Non-invasive imaging techniques such as positron emission tomography (PET) have revealed impaired presynaptic dopamine function in chronic cocaine users...
September 18, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28919879/automated-online-quantification-method-for-18-f-fdg-positron-emission-tomography-ct-improves-detection-of-the-epileptogenic-zone-in-patients-with-pharmacoresistant-epilepsy
#6
Vanessa Cristina Mendes Coelho, Marcia E Morita, Barbara J Amorim, Celso Darío Ramos, Clarissa L Yasuda, Helder Tedeschi, Enrico Ghizoni, Fernando Cendes
AIMS: To assess the validity of an online method to quantitatively evaluate cerebral hypometabolism in patients with pharmacoresistant focal epilepsy as a complement to the visual analysis of the (18)F-FDG positron emission tomography (PET)/CT exam. METHODS: A total of 39 patients with pharmacoresistant epilepsy and probable focal cortical dysplasia [22 patients with frontal lobe epilepsy (FLE) and 17 with temporal lobe epilepsy (TLE)] underwent a presurgical evaluation including EEG, video-EEG, MRI, and (18)F-FDG PET/CT...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28919233/craniospinal-germinomas-in-a-patient-with-down-syndrome-successfully-treated-with-standard-dose-chemotherapy-and-craniospinal-irradiation-a-case-report-and-literature-review
#7
Yohei Miyake, Jun-Ichi Adachi, Tomonari Suzuki, Kazuhiko Mishima, Atsushi Sasaki, Ryo Nishikawa
BACKGROUND: Patients with Down syndrome (DS) are more likely to develop chemotherapy-related complications. The standard treatment for these patients with cancers has not yet been established, and the risks of standard chemotherapy are unclear. In this paper, a rare case of multiple craniospinal germinomas in a patient with DS, which was successfully treated with standard-dose chemotherapy combined with craniospinal irradiation is reported. CASE DESCRIPTION: The authors report a case of multiple craniospinal germinomas in a DS patient who presented with bilateral oculomotor and facial nerve palsy and hearing loss...
September 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28918910/pet-and-mri-image-fusion-based-on-combination-of-2-d-hilbert-transform-and-ihs-method
#8
Mozhdeh Haddadpour, Sabalan Daneshavar, Hadi Seyedarabi
BACKGROUND: The process of medical image fusion is combining two or more medical images such as Magnetic Resonance Image (MRI) and Positron Emission Tomography (PET) and mapping them to a single image as fused image. So purpose of our study is assisting physicians to diagnose and treat the diseases in the least of the time. METHODS: We used Magnetic Resonance Image (MRI) and Positron Emission Tomography (PET) as input images, so fused them based on combination of two dimensional Hilbert transform (2-D HT) and Intensity Hue Saturation (IHS) method...
August 2017: Biomedical Journal
https://www.readbyqxmd.com/read/28918686/sensitivity-of-post-treatment-positron-emission-tomography-computed-tomography-to-detect-inter-fractional-range-variations-in-scanned-ion-beam-therapy
#9
Josefine Handrack, Thomas Tessonnier, Wenjing Chen, Jakob Liebl, Jürgen Debus, Julia Bauer, Katia Parodi
BACKGROUND: Ion therapy, especially with modern scanning beam delivery, offers very sharp dose gradients for highly conformal cancer treatment. However, it is very sensitive to uncertainties of tissue stopping properties as well as to anatomical changes and setup errors, making range verification highly desirable. To this end, positron emission tomography (PET) can be used to measure decay products of β(+)-emitters created in interactions inside the patient. This work investigates the sensitivity of post treatment PET/CT (computed tomography) to detect inter-fractional range variations...
September 18, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28918564/mri-combined-with-pet-ct-of-different-tracers-to-improve-the-accuracy-of-glioma-diagnosis-a-systematic-review-and-meta-analysis
#10
REVIEW
Yihan Yang, Mike Z He, Tao Li, Xuejun Yang
Based on studies focusing on positron emission tomography (PET)-computed tomography (CT) combined with magnetic resonance imaging (MRI) in the diagnosis of glioma, we conducted a systematic review and meta-analysis evaluating the pros and cons and the accuracy of different examinations. PubMed and Cochrane Library were searched. The search was conducted until April 2017. Two reviewers independently conducted the literature search according to the criteria set initially. Based on the exclusion criteria, 15 articles are included in this study...
September 16, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28918513/imaging-findings-of-primary-immunoglobulin-g4-related-cervical-lymphadenopathy
#11
Masaya Kawaguchi, Hiroki Kato, Yusuke Kito, Keisuke Mizuta, Mitsuhiro Aoki, Keizo Kato, Satoshi Goshima, Masayuki Matsuo
PURPOSE: The purpose of the present study was to assess imaging findings of primary immunoglobulin G4 (IgG4)-related cervical lymphadenopathy. METHODS: Five consecutive patients with clinically, serologically, and histopathologically confirmed primary IgG4-related cervical lymphadenopathy without any other organ involvement were included. All patients underwent contrast-enhanced computed tomography (CT), and four underwent (18)F-fluorodeoxyglucose (FDG)-positron emission tomography (PET)/CT...
September 16, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28918355/gallium-iii-chelates-of-mixed-phosphonate-carboxylate-triazamacrocyclic-ligands-relevant-to-nuclear-medicine-structural-stability-and-in-vivo-studies
#12
Maria I M Prata, João P André, Zoltán Kovács, Anett I Takács, Gyula Tircsó, Imre Tóth, Carlos F G C Geraldes
Three triaza macrocyclic ligands, H6NOTP (1,4,7-triazacyclononane-N,N',N″-trimethylene phosphonic acid), H4NO2AP (1,4,7-triazacyclononane-N-methylenephosphonic acid-N',N″-dimethylenecarboxylic acid), and H5NOA2P (1,4,7-triazacyclononane-N,N'-bis(methylenephosphonic acid)-N″-methylene carboxylic acid), and their gallium(III) chelates were studied in view of their potential interest as scintigraphic and PET (Positron Emission Tomography) imaging agents. A (1)H, (31)P and (71)Ga multinuclear NMR study gave an insight on the structure, internal dynamics and stability of the chelates in aqueous solution...
September 1, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28916921/potential-effect-of-prolonged-sevoflurane-anesthesia-on-the-kinetics-of-11-c-raclopride-in-non-human-primates
#13
Ryosuke Arakawa, Lars Farde, Junya Matsumoto, Naoki Kanegawa, Igor Yakushev, Kai-Chun Yang, Akihiro Takano
PURPOSE: Positron emission tomography (PET) in non-human primates (NHP) is commonly performed under anesthesia, with sevoflurane being a widely used inhaled anesthetic. PET measurement in NHP can be repeated, and a difference in radioligand kinetics has previously been observed between the first and second PET measurement on the same day using sevoflurane anesthesia. In this study, we evaluated the effect of prolonged sevoflurane anesthesia on kinetics and binding potential (BPND) of [(11)C]raclopride in NHP...
September 15, 2017: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/28916904/early-assessment-of-response-to-induction-therapy-in-acute-myeloid-leukemia-using-18-f-flt-pet-ct
#14
Eun Ji Han, Bo-Hee Lee, Jeong-A Kim, Young Ha Park, Woo Hee Choi
BACKGROUND: We evaluated the suitability of (18)F-fluorodeoxythymidine ((18)F-FLT) positron emission tomography (PET)/computed tomography (CT) for assessment of the early response to induction therapy and its value for predicting clinical outcome in patients with acute myeloid leukemia (AML). Adult patients who had histologically confirmed AML and received induction therapy were enrolled. All patients underwent (18)F-FLT PET/CT after completion of induction. PET/CT images were visually and quantitatively assessed...
September 16, 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28916549/positron-emission-tomography-computerized-tomography-in-newly-diagnosed-patients-with-giant-cell-arteritis-who-are-taking-glucocorticoids
#15
Alison H Clifford, Elana M Murphy, Steven C Burrell, Mathew P Bligh, Ryan F MacDougall, J Godfrey Heathcote, Mathieu C Castonguay, Min S Lee, Kara Matheson, John G Hanly
OBJECTIVE: Large vessel uptake on positron emission tomography/computerized tomography (PET/CT) supports the diagnosis of giant cell arteritis (GCA). Its value, however, in patients without arteritis on temporal artery biopsy and in those receiving glucocorticoids remains unknown. We compared PET/CT results in GCA patients with positive (TAB+) and negative temporal artery biopsies (TAB-), and controls. METHODS: Patients with new clinically diagnosed GCA starting treatment with glucocorticoids underwent temporal artery biopsy and PET/CT...
September 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28916273/identification-of-recurrence-sites-following-post-prostatectomy-treatment-for-prostate-cancer-using-11-c-choline-positron-emission-tomography-and-multiparametric-pelvic-mri
#16
Avinash Nehra, William P Parker, Rimki Haloi, Sean S Park, Lance A Mynderse, Val J Lowe, Brian J Davis, J Fernando Quevedo, Geoffrey B Johnson, Eugene D Kwon, R Jeffrey Karnes
PURPOSE: To describe anatomic sites of recurrence among prostate cancer patients with biochemical recurrence following radical prostatectomy (RP) and postoperative radiotherapy (RT) and/or androgen deprivation therapy (ADT) using (11)C-Choline PET/CT and multiparametric-MRI. MATERIALS AND METHODS: RP patients evaluated with (11)C-Choline PET/CT and multiparametric-MRI following RT and/or ADT were evaluated for patterns of recurrence and clinicopathologic features...
September 12, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28915798/vemurafenib-plus-cobimetinib-in-unresectable-stage-iiic-or-stage-iv-melanoma-response-monitoring-and-resistance-prediction-with-positron-emission-tomography-and-tumor-characteristics-reposit-study-protocol-of-a-phase-ii-open-label-multicenter-study
#17
Bernies van der Hiel, John B A G Haanen, Marcel P M Stokkel, Daniel S Peeper, Connie R Jimenez, Jos H Beijnen, Bart A van de Wiel, Ronald Boellaard, Alfons J M van den Eertwegh
BACKGROUND: In patients with BRAFV600 mutated unresectable stage IIIc or metastatic melanoma, molecular targeted therapy with combined BRAF/MEK-inhibitor vemurafenib plus cobimetinib has shown a significantly improved progression-free survival and overall survival compared to treatment with vemurafenib alone. Nevertheless, the majority of BRAFV600 mutation-positive melanoma patients will eventually develop resistance to treatment. Molecular imaging with (18)F-Fluorodeoxyglucose ((18)F-FDG) PET has been used to monitor response to vemurafenib in some BRAFV600 mutated metastatic melanoma patients, showing a rapid decline of (18)F-FDG uptake within 2 weeks following treatment...
September 15, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28914600/reduction-of-18-f-fdg-dose-in-clinical-pet-mr-imaging-by-using-silicon-photomultiplier-detectors
#18
Tetsuro Sekine, Gaspar Delso, Konstantinos G Zeimpekis, Felipe de Galiza Barbosa, Edwin E G W Ter Voert, Martin Huellner, Patrick Veit-Haibach
Purpose To determine the level of clinically acceptable reduction in injected fluorine 18 ((18)F) fluorodeoxyglucose (FDG) dose in time-of-flight (TOF)-positron emission tomography(PET)/magnetic resonance (MR) imaging by using silicon photomultiplier (SiPM) detectors compared with TOF-PET/computed tomography (CT) using Lu1.8Y0.2SiO5(Ce), or LYSO, detectors in patients with different body mass indexes (BMIs). Materials and Methods Patients were enrolled in this study as part of a larger prospective study with a different purpose than evaluated in this study (NCT02316431)...
September 14, 2017: Radiology
https://www.readbyqxmd.com/read/28913626/role-of-18-f-fdg-pet-ct-in-the-diagnosis-of-cardiovascular-implantable-electronic-device-infections-a-meta-analysis
#19
Maryam Mahmood, Ayse Tuba Kendi, Saira Farid, Saira Ajmal, Geoffrey B Johnson, Larry M Baddour, Panithaya Chareonthaitawee, Paul A Friedman, M Rizwan Sohail
OBJECTIVE: We performed a meta-analysis evaluating the use of fluorine-18-fluorodeoxyglucose ((18)F-FDG) positron-emission tomography (PET)/computed tomography (CT) in the diagnosis of cardiovascular implantable electronic device (CIED) infections. BACKGROUND: PET/CT may be helpful in the diagnosis of CIED infection, particularly in patients with the absence of localizing signs or definitive echocardiographic findings. METHODS: PubMed, Embase, Cochrane library, CINAHL, Web of Knowledge, and www...
September 14, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28913298/the-unnecessity-of-positron-emission-tomography-computed-tomography-in-the-etiologic-evaluation-of-neurodevelopmental-delay-in-craniosynostosis-patients
#20
Chae Eun Yang, Eun Kyung Park, Myung Chul Lee, Kyu Won Shim, Yong Oock Kim
BACKGROUND: In evaluation of craniosynostosis patients in terms of neurodevelopmental delay, positron emission tomography computed tomography (PET-CT) scan can be used to assess brain abnormalities through glucose metabolism. We aimed to determine the unnecessity of PET-CT in this study. METHODS: Thirty-eight patients diagnosed with craniosynostosis who underwent distraction osteogenesis from October, 2010 to November, 2013 were reviewed. Magnetic resonance imaging (MRI) and PET-CT scan were carried out for evaluation of the brain structure and function, whereas X-ray and CT scan were taken for evaluation of the skull...
March 2017: Arch Craniofac Surg
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