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https://www.readbyqxmd.com/read/29145285/degeneration-of-paramedian-nuclei-in-the-thalamus-induces-holmes-tremor-in-a-case-of-artery-of-percheron-infarction
#1
Tz-Shiang Wei, Chun-Sheng Hsu, Yu-Chun Lee, Shin-Tsu Chang
RATIONALE: Holmes' tremor is an uncommon neurologic disorder following brain insults, and its pathogenesis is undefined. The interruption of the dento-rubro-thalamic tract and secondary deterioration of the nigrostriatal pathway are both required to initiate Holmes' tremor. We used nuclear medicine imaging tools to analyze a patient with concurrent infarction in different zones of each side of the thalamus. Finding whether the paramedian nuclear groups of the thalamus were injured was a decisive element for developing Holmes' tremor...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29143354/synthesis-and-biological-properties-of-radiohalogenated-%C3%AE-%C3%AE-disubstituted-amino-acids-for-pet-and-spect-imaging-of-amino-acid-transporters-aats
#2
Mark M Goodman, Weiping Yu, Nashwa Jarkas
Fluorine-18 and iodine-123 labeled non-natural alicyclic and methyl branched disubstituted α,α-amino acids are a diverse and useful class of tumor imaging agents suitable for positron emission tomography (PET) and single photon emission computed tomography (SPECT). These tracers target the increased expression of the cell membrane amino acid transporter systems L, ASC and A exhibited by many human tumor cells. The most established clinical use for these radiolabeled amino acids is imaging primary and recurrent gliomas, and primary, recurrent and metastatic prostate cancer...
November 16, 2017: Journal of Labelled Compounds & Radiopharmaceuticals
https://www.readbyqxmd.com/read/29143283/evaluation-of-sequential-spect-and-ct-for-targeted-radionuclide-therapy-dosimetry
#3
Tiantian Li, Nien-Yun Wu, Na Song, Greta S P Mok
PURPOSE: In targeted radionuclide therapy (TRT), a prior knowledge of the absorbed dose biodistribution is essential for pre-therapy treatment planning. Previously, we showed that non-rigid organ-by-organ registration in sequential quantitative SPECT images improved dose estimation. This study aims to investigate if sequential CT can further improve TRT dosimetric accuracy. METHODS: We simulated SPECT/CT acquisitions at 1, 12, 24, 72 and 144 h In-111 Zevalin post-injection using an analytical MEGP projector, modeling attenuation, scatter and collimator-detector response...
November 15, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/29143246/isolated-right-ventricular-ischemia-by-spect-myocardial-perfusion-imaging-in-a-patient-with-coronary-artery-disease-and-pulmonary-hypertension
#4
Ayman A Farag, Federico G De Puy, Fadi G Hage
No abstract text is available yet for this article.
November 15, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29141241/mmp-9-and-its-regulators-timp-1-and-emmprin-in-patients-with-acute-st-elevation-myocardial-infarction-a-nordistemi-substudy
#5
Trine Baur Opstad, Ingebjørg Seljeflot, Ellen Bøhmer, Harald Arnesen, Sigrun Halvorsen
OBJECTIVES: The extracellular matrix is involved in wound repair after acute myocardial infarction (AMI). We investigated whether matrix metalloproteinase (MMP)-9, tissue inhibitor of metalloproteinases (TIMP)-1, and the MMP inducer (EMMPRIN) are associated with infarct size, left ventricular function, and clinical outcome in ST-elevation-MI (STEMI). METHODS: In 243 STEMI patients, circulating EMMPRIN, MMP-9, and TIMP-1 were analyzed 3 days and 3 months post-AMI...
November 16, 2017: Cardiology
https://www.readbyqxmd.com/read/29140573/-99m-tc-labeled-rhuepo-for-imaging-of-the-erythropoietin-receptor-in-tumors
#6
Xiaoqing Zhuang, Dan Zhao, Pengfei Yang, Yingqin Jia, Rui Liang, Qian Zhao, Chunlei Han, Joseph M Kinsella, Ruilong Sheng, Juan Li
To analyze erythropoietin receptor (EpoR) status in tumors, recombinant human erythropoietin (rHuEpo) was labeled with (99m) Tc by (99m) Tc-centered one-pot synthesis, resulting in high radiochemical purity, stability and biological activity. Both in vitro cell culture experiments and biodistribution studies of normal rats demonstrated successful EpoR targeting. The biodistribution of labeled rHuEpo in a NCI-H1975 xenograft model showed tumor accumulation (tumor-to-muscle ratio: 4.27±1.77), confirming the expression of active EpoR in tumors...
November 15, 2017: Journal of Labelled Compounds & Radiopharmaceuticals
https://www.readbyqxmd.com/read/29139036/myocardial-stunning-by-gated-spect-an-old-tool-reinvented-in-a-stunning-turn
#7
EDITORIAL
Wael A AlJaroudi, Fadi G Hage
No abstract text is available yet for this article.
November 14, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29138357/tadalafil-a-long-acting-phosphodiesterase-inhibitor-promotes-bone-marrow-stem-cell-survival-and-their-homing-into-ischemic-myocardium-for-cardiac-repair
#8
Ibrahim Elmadbouh, Muhammad Ashraf
The aim was to evaluate the tadalafil-mediated effects at molecular level on bone marrow-derived mesenchymal stem cells (MSCs) survival and their homing into the infarcted hearts to promote cardiac repair and improve function. MSCs were pretreated in vitro with inhibitors of PKG, MAPK, FasL, nitric oxide synthase (NOS) (L-NAME), CXCR4 (AMD3100), or miR-21 inhibitors (+/-luciferase construction +/-Fas) prior to tadalafil treatment for 2 h. These MSCs were then subjected to H2O2 stress to assess their injury...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/29137036/attenuation-and-scatter-correction-in-i-123-fp-cit-spect-do-not-affect-the-clinical-diagnosis-of-dopaminergic-system-neurodegeneration
#9
Miho Akahoshi, Koichiro Abe, Yumiko Uchiyama, Mitsuru Momose, Kenji Fukushima, Kazuo Kitagawa, Shuji Sakai
The purpose of this study was to assess the influence of different reconstruction factors in N-ω-fluoropropyl-2β-carbomethoxy-3β-(4-I-123 iodophenyl)nortropane (I-123 FP-CIT) single-photon emission computed tomography (SPECT) images for the diagnosis of dopaminergic system neurodegeneration (DSND).Seventy-three patients (38 females, 35 males) suspected of DSND were included in this study. The patients were divided into 3 groups on the basis of their final clinical diagnoses; patients with Parkinson disease (group 1, n = 36), patients with other DSND (group 2, n = 19), patients without DSND (group 3, n = 18)...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29135721/clinical-outcomes-and-prognostic-factors-of-radioiodine-ablation-therapy-for-lymph-node-metastases-from-papillary-thyroid-carcinoma
#10
Xinyu Wu, Hao Gu, Yongju Gao, Bo Li, Ruitai Fan
OBJECTIVE: A total of 118 patients with papillary thyroid carcinoma treated with radioactive iodine for lymph node metastases were analyzed retrospectively between August 2008 and June 2014. We describe the clinical course of these patients and focus on factors associated with lymph node metastases response to iodine-131 (I) treatment. PATIENTS AND METHODS: A total of 118 postoperative papillary thyroid carcinoma patients who underwent I treatment with lymph nodes as the only site of metastasis on whole-body scan (I Rx-WBS) and single-photon emission computed tomography-computed tomography (SPECT-CT) were enrolled...
November 10, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29135109/18f-fdg-pet-ct-versus-99tcm-mibi-spect-which-is-better-for-detection-of-solitary-pulmonary-nodules
#11
Guoliang Xia, Chuanguo An, Zonghua Ming, Hong Guo, Lihong Liu, Yufeng Li
PURPOSE: To compare the diagnostic value of 99Tcm-MIBI- SPECT and 18F-FDG-PET/CT in differentiating benign from malignant solitary pulmonary nodules (SPNs). METHODS: 170 SPNs were involved in this study (78 with 99Tcm-MIBI-SPECT and 92 with 18F-FDG-PET/CT). Definite diagnosis of SPNs was determined by biopsy. The diagnostic efficiency of 99Tcm-MIBI-SPECT and 18F-FDGPET/ CT in differentiating benign from malignant SPNs was analyzed and compared. RESULTS: Seventy-eight patients with SPNs were examined with 99Tcm-MIBI-SPECT (26 with malignant SPNs and 52 with benign SPNs)...
September 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29133699/referral-practice-reporting-standards-and-the-impact-of-dopamine-transporter-scans-done-in-a-tertiary-hospital
#12
Shakya Bhattacharjee, Albi J Chalissery, Tim Barry, Donagh O'Sullivan, Martin O'Connell, Timothy Lynch
AIMS: We studied the referral practice, reporting standards, and the impact of 123 ioflupane single photon emission computed tomogram dopamine transporters (DAT-SPECT) scans conducted for the diagnosis and clinical management of patients. SETTINGS AND DESIGNS: The present study was a retrospective, non-interventional study. MATERIALS AND METHODS: We assessed the DAT scan referral and the official reports available from the Nuclear Medicine Department of the Mater Misericordiae University Hospital over 1 year (2013)...
November 2017: Neurology India
https://www.readbyqxmd.com/read/29129545/predicting-progression-of-amnesic-mci-the-integration-of-episodic-memory-impairment-with-perfusion-spect
#13
Davide Quaranta, Guido Gainotti, Daniela Di Giuda, Maria Gabriella Vita, Fabrizio Cocciolillo, Giordano Lacidogna, Valeria Guglielmi, Carlo Masullo, Alessandro Giordano, Camillo Marra
The present study aimed at assessing if the ability to predict progression from amnesic Mild Cognitive Impairment (aMCI) to dementia is improved by considering the presence at the baseline of Single Photon Emission Computed Tomography (SPECT) perfusion abnormalities in addition to a defect of long term memory. The Episodic Memory Score (EMS), a global index which integrates results obtained in subtests of the Rey's Verbal Learning Test and the Rey-Osterrieth Figure recall, were taken into account to evaluate defects of long term memory...
October 24, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29127250/malignant-peripheral-nerve-sheath-tumours-of-the-pericardium-in-a-patient-with-neurofibromatosis-type-1-the-diagnostic-value-of-18f-fdg-pet-ct-and-i-123-mibg-spect-ct
#14
Mathieu Charest, Josephine Pressacco, Jaramie Thomas-Gittens
A 25 year old female with known neurofibromatosis type 1 with a large anterior mediastinal mass was investigated. F18-FDG PET-CT revealed a radiotracer avid anterior mediastinal mass with SUVmax of 4.3 and demonstrating a hypoactive center. The Iodine-123 MIBG SPECT-CT study performed subsequently did not demonstrate any uptake, thereby excluding for the most part the diagnoses of paraganglioma or neuroblastoma. At final pathology, a malignant peripheral nerve sheath tumour (MPNST) of the pericardium with areas of chondrosarcomatous and angiosarcomatous differentiation was diagnosed...
November 10, 2017: Journal of Nuclear Medicine Technology
https://www.readbyqxmd.com/read/29124673/failure-to-accurately-identify-the-number-of-diseased-coronary-arteries-a-weakness-of-spect-mpi
#15
EDITORIAL
Dennis A Calnon
No abstract text is available yet for this article.
November 9, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29123178/a-nanobody-based-tracer-targeting-dpp6-for-non-invasive-imaging-of-human-pancreatic-endocrine-cells
#16
Alexander Balhuizen, Sam Massa, Iris Mathijs, Jean-Valery Turatsinze, Jens De Vos, Stéphane Demine, Catarina Xavier, Olatz Villate, Isabelle Millard, Dominique Egrise, Carmen Capito, Raphaël Scharfmann, Pieter In't Veld, Piero Marchetti, Serge Muyldermans, Serge Goldman, Tony Lahoutte, Luc Bouwens, Decio L Eizirik, Nick Devoogdt
There are presently no reliable ways to quantify endocrine cell mass (ECM) in vivo, which prevents an accurate understanding of the progressive beta cell loss in diabetes or following islet transplantation. To address this unmet need, we coupled RNA sequencing of human pancreatic islets to a systems biology approach to identify new biomarkers of the endocrine pancreas. Dipeptidyl-Peptidase 6 (DPP6) was identified as a target whose mRNA expression is at least 25-fold higher in human pancreatic islets as compared to surrounding tissues and is not changed by proinflammatory cytokines...
November 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29122401/the-efficacy-of-adrenocorticotropic-hormone-in-a-girl-with-anti-n-methyl-d-aspartate-receptor-encephalitis
#17
Mari Hatanaka, Shuichi Shimakawa, Akihisa Okumura, Jun Natsume, Miho Fukui, Shohei Nomura, Mitsuru Kashiwagi, Hiroshi Tamai
BACKGROUND: Immunomodulatory therapy has shown some therapeutic benefits in patients with anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis. In this report, we describe the use of adrenocorticotropic hormone (ACTH) immunotherapy with good outcome in a patient with anti-NMDAR encephalitis. SUBJECT AND METHODS: A 4-year-old girl developed convulsions in her right arm and leg without impaired consciousness. These convulsions occurred frequently in clusters of 10-20 events of 10-20 s duration...
November 6, 2017: Brain & Development
https://www.readbyqxmd.com/read/29119593/prediction-of-cognitive-worsening-in-de-novo-parkinson-s-disease-clinical-use-of-biomarkers
#18
Dario Arnaldi, Fabrizio De Carli, Francesco Famà, Andrea Brugnolo, Nicola Girtler, Agnese Picco, Matteo Pardini, Jennifer Accardo, Luca Proietti, Federico Massa, Matteo Bauckneht, Silvia Morbelli, Gianmario Sambuceti, Flavio Nobili
BACKGROUND: Cognitive impairment is a frequent and disabling feature of Parkinson's disease. Identifying the factors able to predict cognitive worsening since the early stage may improve disease management. The objective of this study was to define the best predictors of future cognitive worsening in a group of patients with newly diagnosed PD and to propose cutoff values potentially useful at the individual level. METHODS: Fifty-four consecutive drug-naive patients with de novo PD were prospectively evaluated by clinical and neuropsychological assessment, resting EEG, and (123) I-FP-CIT-SPECT and clinically classified into mainly motor, diffuse/malignant, and intermediate PD subtypes; they were then followed up for an average of 5 years...
November 9, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29119373/additional-value-of-systolic-wall-thickening-in-myocardial-stunning-evaluated-by-stress-rest-gated-perfusion-spect
#19
Alberto Bestetti, Besart Cuko, Adriano Decarli, Alessio Galli, Federico Lombardi
AIM AND PATIENTS: The aim of the present study is to evaluate the additional value of systolic wall thickening to myocardial perfusion in diagnosing myocardial stunning in patients with angiography proven coronary artery disease. We selected 91 ischemic patients (82 males; mean age 59.7 ± 10.3) with CAD documented by angiography. Ischemia was defined as a summed difference score ≥5. All patients underwent a 2-day gated perfusion SPECT protocol. The patients received a dose of 740 MBq of (99m)Tc-tetrofosmin after stress and at rest...
November 8, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29116562/prediction-of-long-term-%C3%A2-10%C3%A2-year-cardiovascular-outcomes-in-heart-transplant-recipients-value-of-stress-technetium-99m-tetrofosmin-myocardial-perfusion-imaging
#20
Jesse F Veenis, Hendrik J Boiten, Jan C van den Berge, Kadir Caliskan, Alex P W M Maat, Roelf Valkema, Alina A Constantinescu, Olivier C Manintveld, Felix Zijlstra, Ron T van Domburg, Arend F L Schinkel
BACKGROUND: Myocardial perfusion imaging (MPI) using single-photon emission computed tomography (SPECT) is useful in the evaluation of cardiac allograft vasculopathy (CAV) in heart transplant (HTx) recipients. The current study evaluated the long-term prognostic value of stress SPECT MPI for predicting all-cause mortality and cardiac events in HTx recipients. METHODS: The study population consisted of 166 HTx recipients (mean age 54 ± 10 years, 84% male) who underwent exercise or dobutamine stress (99m)Tc-tetrofosmin SPECT MPI for the assessment of CAV...
November 7, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
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