Abstract:
PURPOSE:To contribute to the differentiation of Parkinson's disease (PD) and essential tremor (ET), we compared two different artificial neural network classifiers using (123)I-FP-CIT SPECT data, a probabilistic neural network (PNN) and a classification tree (ClT). METHODS:(123)I-FP-CIT brain SPECT with semiquantitative analysis was performed in 216 patients: 89 with ET, 64 with PD with a Hoehn and Yahr (H&Y) score of ≤2 (early PD), and 63 with PD with a H&Y score of ≥2.5 (advanced PD). For each of the 1,000 experiments carried out, 108 patients were randomly selected as the PNN training set, while the remaining 108 validated the trained PNN, and the percentage of the validation data correctly classified in the three groups of patients was computed. The expected performance of an "average performance PNN" was evaluated. In analogy, for ClT 1,000 classification trees with similar structures were generated. RESULTS:For PNN, the probability of correct classification in patients with early PD was 81.9±8.1% (mean±SD), in patients with advanced PD 78.9±8.1%, and in ET patients 96.6±2.6%. For ClT, the first decision rule gave a mean value for the putamen of 5.99, which resulted in a probability of correct classification of 93.5±3.4%. This means that patients with putamen values >5.99 were classified as having ET, while patients with putamen values <5.99 were classified as having PD. Furthermore, if the caudate nucleus value was higher than 6.97 patients were classified as having early PD (probability 69.8±5.3%), and if the value was <6.97 patients were classified as having advanced PD (probability 88.1%±8.8%). CONCLUSION:These results confirm that PNN achieved valid classification results. Furthermore, ClT provided reliable cut-off values able to differentiate ET and PD of different severities.
journal_name
Eur J Nucl Med Mol Imagingauthors
Palumbo B,Fravolini ML,Nuvoli S,Spanu A,Paulus KS,Schillaci O,Madeddu Gdoi
10.1007/s00259-010-1481-6subject
Has Abstractpub_date
2010-11-01 00:00:00pages
2146-53issue
11eissn
1619-7070issn
1619-7089journal_volume
37pub_type
杂志文章abstract:PURPOSE:A technique is described for accurate quantification of the specific binding ratio (SBR) in [(123)I]FP-CIT SPECT brain images. METHODS:Using a region of interest (ROI) approach, the SBR is derived from a measure of total striatal counts that takes into account the partial volume effect. Operator intervention i...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-006-0155-x
更新日期:2006-12-01 00:00:00
abstract:PURPOSE/BACKGROUND:[18F]fluoroethylcholine (18FECH) has been shown to be a valuable PET-tracer in recurrent prostate cancer (PCa), but still has limited accuracy. RM2 is a gastrin-releasing peptide receptor (GRPr) antagonist that binds to GRPr on PCa cells. Recent studies suggest that GRPr imaging with PET/CT is a prom...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-017-3702-8
更新日期:2017-08-01 00:00:00
abstract:PURPOSE:The aim of this study was to assess the accuracy of (18)F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/CT to visualize lymph node metastases before the start of neoadjuvant chemotherapy and to determine how often the visualization is sufficiently prominent to allow monitoring of the axillary resp...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 临床试验,杂志文章
doi:10.1007/s00259-009-1343-2
更新日期:2010-06-01 00:00:00
abstract::Radioembolization (RE) with (90)Y microspheres is a promising catheter-based therapeutic option for patients with unresectable primary and metastatic liver tumours. Its rationale arises from the dual blood supply of liver tissue through the hepatic artery and the portal vein. Metastatic hepatic tumours measuring >3 mm...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章,评审
doi:10.1007/s00259-013-2675-5
更新日期:2014-05-01 00:00:00
abstract:PURPOSE:We investigated the added value of a new respiratory amplitude-based PET reconstruction method called optimal gating (OG) with the aim of providing accurate image quantification in lung cancer. METHODS:FDG-PET imaging was performed in 26 lung cancer patients during free breathing using a 24-min list-mode acqui...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-010-1716-6
更新日期:2011-05-01 00:00:00
abstract:PURPOSE:To assess the diagnostic performance of PET/MR in patients with non-small-cell lung cancer. METHODS:Fifty consecutive consenting patients who underwent routine (18)F-FDG PET/CT for potentially radically treatable lung cancer following a staging CT scan were recruited for PET/MR imaging on the same day. Two exp...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-014-2873-9
更新日期:2015-01-01 00:00:00
abstract:PURPOSE:The future significance of peptide radiopharmaceuticals in diagnostic imaging with PET will be dependent on methodological aspects, as well as other requirements such as availability of the radionuclide and cost-effectiveness of its production. The aim of this study was to evaluate whether recent improvements i...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-004-1582-1
更新日期:2004-12-01 00:00:00
abstract::[Yttrium-90-DOTA-Tyr(3)]-octreotide (DOTATOC) and [(177)Lu-DOTA-Tyr(3)-Thr(8)]-octreotide (DOTATATE) are used for peptide receptor-mediated radionuclide therapy (PRMRT) in neuroendocrine tumours. No human data comparing these two compounds are available so far. We used (111)In as a surrogate for (90)Y and (177)Lu and ...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 临床试验,杂志文章
doi:10.1007/s00259-004-1553-6
更新日期:2004-09-01 00:00:00
abstract:PURPOSE:Brain imaging of FDG uptake and cerebrospinal fluid (CSF) concentration of amyloid-beta 1-42 (Abeta(1-42)) or tau proteins are promising biomarkers in the diagnosis of Alzheimer's disease (AD). There is still uncertainty regarding any association between decreased FDG uptake and alterations in CSF markers. MET...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-009-1063-7
更新日期:2009-07-01 00:00:00
abstract:PURPOSE:Hypometabolism of the posterior cingulate cortex (PCC) in early Alzheimer's disease (AD) is thought to arise in part due to AD-specific neuronal damage to the hippocampal formation. Here, we explored the association between microstructural alterations within the hippocampus and whole-brain glucose metabolism in...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-011-1882-1
更新日期:2011-12-01 00:00:00
abstract:OBJECTIVE:The 18-kDa mitochondrial translocator protein (TSPO) was reported to be upregulated in gliomas. 18F-GE-180 is a novel 3rd generation TSPO receptor ligand with improved target-to-background contrast compared to previous tracers. In this pilot study, we compared PET imaging with 18F-GE-180 and MRI of patients w...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-017-3799-9
更新日期:2017-12-01 00:00:00
abstract:PURPOSE:To study the effect of adjuvant lithium on serum thyroxine (T4) concentrations in patients treated with radioactive iodine (RAI) therapy in our environment. METHODS:This was a prospective simple randomized comparative, experimental cohort study of patients with hyperthyroidism referred for RAI ablation therapy...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1007/s00259-016-3388-3
更新日期:2016-10-01 00:00:00
abstract:PURPOSE:Tau pathology progression in Alzheimer's disease (AD) is explained through the network degeneration hypothesis and the neuropathological Braak stages; however, the compatibility of these models remains unclear. METHODS:We utilized [18F]AV-1451 tau-PET scans of 39 subjects with AD and 39 sex-matched amyloid-neg...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-020-05183-1
更新日期:2021-01-18 00:00:00
abstract:PURPOSE:This meta-analysis summarized the accuracy of stress myocardial perfusion scintigraphy (MPS) and stress echocardiography for the diagnosis of coronary artery disease (CAD) in patients with arterial hypertension. METHODS:We searched for studies in which stress MPS or stress echocardiography were performed to de...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章,meta分析
doi:10.1007/s00259-011-1891-0
更新日期:2011-11-01 00:00:00
abstract:PURPOSE:To determine the value of (68)Ga-DOTA-TOC and (18)F-FDG PET/CT for initial and follow-up evaluation of patients with neuroendocrine tumour (NET) treated with peptide receptor radionuclide therapy (PRRT). METHODS:We evaluated 66 patients who had histologically proven NET and underwent both PRRT and three combin...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-016-3328-2
更新日期:2016-08-01 00:00:00
abstract::Breast cancer is associated with increased glucose consumption and can therefore be visualised with the glucose analogue [(18)F]2-deoxy-2-fluoro-D-glucose (FDG) and positron emission tomography (PET). FDG uptake in the primary tumour can vary substantially, and specific tumour characteristics have been demonstrated to...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章,评审
doi:10.1007/s00259-004-1529-6
更新日期:2004-06-01 00:00:00
abstract:PURPOSE:Respiratory motion of lung lesions is a limiting factor of quantification of positron emission tomography (PET) data. As some important applications of PET such as therapy monitoring and radiation therapy treatment planning require precise quantification, it is necessary to correct PET data for motion artefacts...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-008-0868-0
更新日期:2008-11-01 00:00:00
abstract:PURPOSE:The purpose of this prospective study was to evaluate the usefulness of (18)F-fluorodeoxyglucose (FDG) and (11)C-choline positron emission tomography (PET)/computed tomography (CT) for detecting recurrences of advanced head and neck cancer after combined intra-arterial chemotherapy and radiotherapy. Additionall...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 临床试验,杂志文章
doi:10.1007/s00259-010-1400-x
更新日期:2010-07-01 00:00:00
abstract:PURPOSE:[(18)F]Fluciclovine (anti-[(18)F]FACBC) is a synthetic amino acid developed for PET assessment of the anabolic component of tumour metabolism in clinical routine. This phase 1 trial evaluated the safety, tracer stability and uptake kinetics of [(18)F]fluciclovine in patients. METHODS:Six patients with biopsy-p...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 临床试验,杂志文章
doi:10.1007/s00259-012-2291-9
更新日期:2013-02-01 00:00:00
abstract::Synthetic macromolecules such as copolymers of N-(2-hydroxypropyl)methacrylamide (pHPMA) are potential carriers for the delivery of drugs owing to their ability to passively accumulate in solid tumours [enhanced permeation and retention (EPR) effect]. To gain further knowledge about the biodistribution and the cellula...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-002-0835-0
更新日期:2002-08-01 00:00:00
abstract::Jérôme Barriere was inadvertently missing in the original version of this article. He has participated to the study design, protocol writing and inclusion of a significant number of patients. ...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 已发布勘误
doi:10.1007/s00259-019-04321-8
更新日期:2019-07-01 00:00:00
abstract:PURPOSE:The aim of this study is to report on a collective of 20 children from Belarus who had developed papillary thyroid carcinoma with pulmonary metastases after the Chernobyl disaster. In all children fractionated radioiodine therapy (RIT) was ceased before achieving complete remission due to a lack of further effe...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 临床试验,杂志文章
doi:10.1007/s00259-010-1669-9
更新日期:2011-04-01 00:00:00
abstract::Organ residence times were calculated for diagnostic intakes of (99m)Tc pertechnetate, 2,3-dimercaptosuccinic acid (DMSA), diethylene triamine penta-acetic acid (DTPA), hydroxymethylene diphosphonate (HDP), macroaggregated albumin (MAA) and mercapto-acetyltriglycine (MAG(3)) during the 1st and 3rd stages of pregnancy ...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-002-0858-6
更新日期:2002-10-01 00:00:00
abstract:PURPOSE:Prostate-specific membrane antigen (PSMA) positron emission tomography (PET)/computed tomography (CT) is used for (re)staging prostate cancer (PCa) and as a biomarker for evaluating response to therapy, but lacks established response criteria. A panel of PCa experts in nuclear medicine, radiology, and/or urolog...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-020-04934-4
更新日期:2021-02-01 00:00:00
abstract:PURPOSE:Postoperative infection still constitutes an important complication of spine surgery, and the optimal imaging modality for diagnosing postoperative spine infection has not yet been established. The aim of this prospective multicenter study was to assess the diagnostic performance of three imaging modalities in ...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-020-05109-x
更新日期:2020-11-18 00:00:00
abstract:PURPOSE:The study aims to investigate the role of 18F-alfatide positron emission tomography/computed tomography (PET/CT) in predicting the short-term outcome of concurrent chemoradiotherapy (CCRT) in patients with advanced non-small cell lung cancer (NSCLC). METHODS:Eighteen patients with advanced NSCLC had undergone ...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-016-3505-3
更新日期:2016-12-01 00:00:00
abstract:INTRODUCTION:The precise clinical utility of lung 201Tl uptake in exercise SPECT myocardial perfusion imaging remains open to research. This study validates an optimal index for lung 201Tl uptake measurement and assesses its value in the prediction of higher-risk coronary artery disease (CAD). METHOD:Three hundred and...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-006-0255-7
更新日期:2007-04-01 00:00:00
abstract:PURPOSE:Continuous bed motion has recently been introduced for whole-body PET/CT, and represents a paradigm shift towards individualized and flexible acquisition without the limitations of bed position-based planning. Increased patient comfort due to lack of abrupt table position changes may be another albeit still unp...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00259-015-3226-z
更新日期:2016-04-01 00:00:00
abstract:PURPOSE:The aim of this study was to investigate the influence of a computer-based decision support system (DSS) on performance and inter-observer variability of interpretations regarding ischaemia and infarction in myocardial perfusion scintigraphy (MPS). METHODS:Seven physicians independently interpreted 97 MPS stud...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-008-0807-0
更新日期:2008-09-01 00:00:00
abstract::Chronic cigarette smoking alters coronary vascular endothelial response. To determine whether altered response also occurs in young individuals without manifest coronary disease we quantified coronary blood flow at rest, following adenosine vasodilator stress and during the cold pressor test in healthy young smokers. ...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 临床试验,杂志文章
doi:10.1007/s00259-002-0818-1
更新日期:2002-08-01 00:00:00