Abstract:
OBJECTIVE:The pattern expression score (PES), i.e., the degree to which a pathology-related pattern is present, is frequently used in FDG-brain-PET analysis and has been shown to be a powerful predictor of conversion to Alzheimer's disease (AD) in mild cognitive impairment (MCI). Since, inevitably, the PES is affected by non-pathological variability, our aim was to improve classification with the simple, yet novel approach to identify patterns of non-pathological variance in a separate control sample using principal component analysis and removing them from patient data (controls-based denoising, CODE) before calculating the PES. METHODS:Multi-center FDG-PET from 220 MCI patients (64 non-converter, follow-up ≥ 4 years; 156 AD converter, time-to-conversion ≤ 4 years) were obtained from the ADNI database. Patterns of non-pathological variance were determined from 262 healthy controls. An AD pattern was calculated from AD patients and controls. We predicted AD conversion based on PES only and on PES combined with neuropsychological features and ApoE4 genotype. We compared classification performance achieved with and without CODE and with a standard machine learning approach (support vector machine). RESULTS:Our model predicts that CODE improves the signal-to-noise ratio of AD-PES by a factor of 1.5. PES-based prediction of AD conversion improved from AUC 0.80 to 0.88 (p= 0.001, DeLong's method), sensitivity 69 to 83%, specificity 81% to 88% and Matthews correlation coefficient (MCC) 0.45 to 0.66. Best classification (0.93 AUC) was obtained when combining the denoised PES with clinical features. CONCLUSIONS:CODE, applied in its basic form, significantly improved prediction of conversion based on PES. The achieved classification performance was higher than with a standard machine learning algorithm, which was trained on patients, explainable by the fact that CODE used additional information (large sample of healthy controls). We conclude that the proposed, novel method is a powerful tool for improving medical image analysis that offers a wide spectrum of biomedical applications, even beyond image analysis.
journal_name
Eur J Nucl Med Mol Imagingauthors
Blum D,Liepelt-Scarfone I,Berg D,Gasser T,la Fougère C,Reimold M,Alzheimer’s Disease Neuroimaging Initiative.doi
10.1007/s00259-019-04400-wsubject
Has Abstractpub_date
2019-10-01 00:00:00pages
2370-2379issue
11eissn
1619-7070issn
1619-7089pii
10.1007/s00259-019-04400-wjournal_volume
46pub_type
杂志文章,多中心研究abstract:PURPOSE:[(18)F]FPEB is a promising PET radioligand for the metabotropic glutamate receptor 5 (mGluR5), a potential target for the treatment of neuropsychiatric diseases. The purpose of this study was to evaluate the test-retest reproducibility of [(18)F]FPEB in the human brain. METHODS:Seven healthy male subjects were...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-015-3094-6
更新日期:2015-09-01 00:00:00
abstract:PURPOSE:Tau accumulation is a core pathologic change in various neurodegenerative diseases including Alzheimer's disease and frontotemporal lobar degeneration-tau. Recently, tau positron emission tomography tracers such as [18F] AV-1451 and [18F] THK5351 have been developed to detect tau deposition in vivo. In the pres...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-017-3876-0
更新日期:2018-03-01 00:00:00
abstract:PURPOSE:In recent decades, the use of radiopharmaceuticals in the assessment of hepatocellular carcinoma (HCC) has become established, and new findings indicate that radiolabelled choline has considerable potential in this setting. Therefore, in this study we aimed to assess the diagnostic role of (11)C-choline positro...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-015-3079-5
更新日期:2015-08-01 00:00:00
abstract:PURPOSE:Previous functional neuroimaging studies suggest that selective aspects of the brain serotonin (5-HT) system change during the aging process. Here, we assessed the effects of aging on the brain regional alpha-[(11)C]methyl-L: -tryptophan (alpha-[(11)C]MTrp) trapping rate constant (K*; microl.g(-1).min(-1)), whi...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-007-0365-x
更新日期:2007-08-01 00:00:00
abstract:PURPOSE:There are controversial debates if patients with Hürthle cell carcinoma, also known as oxyphilic or oncocytic cell follicular thyroid carcinoma, have a poorer outcome. In this study, we systematically evaluated the clinical outcome in a large patient cohort following thyroidectomy and initial I-131 radioactive ...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-020-04952-2
更新日期:2021-02-01 00:00:00
abstract:PURPOSE:To evaluate the clinical value of 68Ga-PSMA PET/CT negativity in patients with biochemical recurrent prostate cancer (BCR). METHODS:One hundred three BCR patients (median age, 70 years; median PSA, 0.47 ng/mL) with negative 68Ga-PSMA PET/CT, followed up for at least 1 year, were retrospectively identified in a...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-020-04914-8
更新日期:2021-01-01 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::The trade-off between resolution and count sensitivity dominates the performance of standard gamma cameras and dictates the need for relatively high doses of radioactivity of the used radiopharmaceuticals in order to limit image acquisition duration. The introduction of cadmium-zinc-telluride (CZT)-based cameras may o...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章,评审
doi:10.1007/s00259-016-3467-5
更新日期:2016-12-01 00:00:00
abstract::The development of monofunctional DTPA derivatives has been a major breakthrough in the labelling of proteins or peptides with a variety of radiometals. Although this methodology is simple and useful for indium-111 labelling, the stability of these conjugates is too low for most therapeutic nuclides. Cyclic chelators,...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 临床试验,杂志文章
doi:10.1007/s00259-003-1178-1
更新日期:2003-08-01 00:00:00
abstract:PURPOSE:We tested the hypothesis that lateralized hemispheric glucose metabolism may have diagnostic implications in Alzheimer's disease (AD) and mild cognitive impairment (MCI). METHODS:We performed FDG-PET/CT in 23 patients (mean age 63.7 years, range 50-78, 17 females) diagnosed with AD (n = 15) or MCI (n = 8) duri...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-018-4248-0
更新日期:2019-05-01 00:00:00
abstract:PURPOSE:The purpose of this study was to undertake dual assessment of tumour blood flow and glucose metabolism in non-small cell lung cancer (NSCLC) using contrast-enhanced computed tomography (CE-CT) and (18)F-fluorodeoxyglucose positron emission tomography (FDG-PET) in order to assess how the relationships between th...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 临床试验,杂志文章
doi:10.1007/s00259-005-1932-7
更新日期:2006-01-01 00:00:00
abstract::This study assessed the clinical usefulness of a new technetium-99m labelled somatostatin analogue from the standpoint of oncological diagnostics. The study group comprised 40 patients in whom malignant neoplasms (32 primary and 8 metastatic) had been diagnosed. Among the primary tumours there were 21 cases of lung ca...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 临床试验,杂志文章
doi:10.1007/s00259-003-1254-6
更新日期:2003-10-01 00:00:00
abstract:PURPOSE:The aim of the study was to assess the role of myocardial perfusion scintigraphy (MPS) in the prediction of future cardiac events in elderly hypertensive patients and to investigate if its prognostic value is maintained during a 10-year follow-up period. METHODS:A total of 229 consecutive patients ≥ 65 years o...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-012-2169-x
更新日期:2012-10-01 00:00:00
abstract:PURPOSE:This study aimed to establish an effective nomogram to predict primary distant metastasis (DM) in patients with nasopharyngeal carcinoma (NPC) to guide the application of PET/CT. METHODS:In total, 3591 patients with pathologically confirmed NPC were consecutively enrolled. The nomogram was constructed based on...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-020-05128-8
更新日期:2021-01-08 00:00:00
abstract:PURPOSE:To characterise tissue sites of immune activation and HIV replication we performed FDG-PET in ART-treated and ART-naive HIV-infected individuals. Specific aims were to establish whether HIV-infected patients can be differentiated on the basis of the detection of specific locations of viral replication, even in ...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-008-1023-7
更新日期:2009-04-01 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:The extent of neovascularization determines the clinical outcome of coronary artery disease and other occlusive cardiovascular disorders. Monitoring of neovascularization is therefore highly important. This review article will elaborately discuss preclinical studies aimed at validating new nuclear angiogenesis ...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章,评审
doi:10.1007/s00259-016-3480-8
更新日期:2016-12-01 00:00:00
abstract:PURPOSE:(18)F-8-cyclopentyl-3-(3-fluoropropyl)-1-propylxanthine ((18)F-CPFPX) is a potent radioligand to study human cerebral A(1) adenosine receptors and their neuromodulatory and neuroprotective functions with positron emission tomography (PET). The purpose of this study was to determine the biodistribution and the r...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-008-0753-x
更新日期:2008-08-01 00:00:00
abstract:PURPOSE:The aim of this study was to analyse the impact of FDG-PET staging on treatment results of neo-adjuvant radiochemotherapy in patients with advanced non-small cell lung cancer (NSCLC). We compared prospectively the outcome of two patient groups with stage III NSCLC undergoing the same neo-adjuvant radio-chemothe...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-006-0197-0
更新日期:2007-01-01 00:00:00
abstract:PURPOSE:The serotonin-1A (5-HT(1A)) receptor is implicated in the pathophysiology of major neuropsychiatric disorders. Thus, the functional imaging of 5-HT(1A) receptors by positron emission tomography (PET) may contribute to the understanding of its role in those pathologies and their therapeutics. These receptors exi...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-009-1274-y
更新日期:2010-03-01 00:00:00
abstract:PURPOSE:123I-labelled mZIENT (2β-carbomethoxy-3β-(3′-((Z)-2-iodoethenyl)phenyl)nortropane) has been developed as a radioligand for the serotonin transporter. The aim of this preliminary study was to assess its whole-body biodistribution in humans and estimate dosimetry. METHODS:Three healthy controls and three patient...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 临床试验,杂志文章
doi:10.1007/s00259-011-2056-x
更新日期:2012-05-01 00:00:00
abstract:PURPOSE:A pilot study was performed in patients with recurrent back pain after spinal fusion surgery to evaluate the ability of (18)F-NaF PET/CT imaging to correctly identify those requiring surgical intervention and to locate a site amenable to surgical intervention. METHODS:In this prospective study 22 patients with...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 临床试验,杂志文章
doi:10.1007/s00259-012-2196-7
更新日期:2012-11-01 00:00:00
abstract:PURPOSE:To determine the diagnostic efficacy of (11)C-choline PET/CT in patients with prostate cancer (PC) after radical prostatectomy who presented with increasing PSA levels during follow-up in spite of being on hormone treatment (HT), and therefore showing HT resistance. METHODS:We evaluated a large series of 157 c...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-012-2272-z
更新日期:2013-01-01 00:00:00
abstract:PURPOSE:The intra-arterial administration of 90Y microspheres is a new palliative treatment option for unresectable liver metastases. The aim of this study was to quantitatively assess changes in FDG uptake and tumour size following 90Y microsphere treatment (SIR-Spheres) using 18F-fluorodeoxyglucose (FDG) PET/CT imagi...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-004-1752-1
更新日期:2005-07-01 00:00:00
abstract::Radiomics in nuclear medicine is rapidly expanding. Reproducibility of radiomics studies in multicentre settings is an important criterion for clinical translation. We therefore performed a meta-analysis to investigate reproducibility of radiomics biomarkers in PET imaging and to obtain quantitative information regard...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章,评审
doi:10.1007/s00259-019-04391-8
更新日期:2019-12-01 00:00:00
abstract:PURPOSE:Myocardial blood flow (MBF) measurement using positron emission tomography (PET) from the washout rate of (15)O-water is theoretically independent of tissue attenuation. The aim of this study was to evaluate the impact of not using attenuation correction in the assessment of coronary endothelial function and my...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-015-3163-x
更新日期:2016-02-01 00:00:00
abstract:PURPOSE:Despite recent advances in lumbar spine stabilization surgery (LSSS), a high number of patients continue to complain of persistent/recurrent lumbar pain after LSSS. Conventional imaging (plain radiography, CT and MRI) is commonly performed to assess potential lumbar pain generators, but findings are equivocal i...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-018-4141-x
更新日期:2019-04-01 00:00:00
abstract:PURPOSE:Although two norepinephrine transporter (NET) radioligands, (S,S)-[(18)F]FMeNER-D(2) and (S,S)-[(11)C]MeNER, have been reported to have different characteristics, there has not been a direct comparative study in vivo. METHODS:In this preliminary study, two rhesus monkeys underwent three PET measurements each, ...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-009-1194-x
更新日期:2009-11-01 00:00:00
abstract:PURPOSE:To study the feasibility of the in vivo [18F]-DPA-714 TSPO positron emission tomography (PET) to detect glial activation in a rat model of progressive parkinsonism induced by viral-mediated overexpression of A53T mutated human α-synuclein (hα-syn) in the substantia nigra pars compacta (SNpc). METHODS:We conduc...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-020-04772-4
更新日期:2020-10-01 00:00:00
abstract:PURPOSE:To evaluate, in patients with chest pain, the diagnostic value of ST elevation (STE) in lead aVR during stress testing prior to (99m) Tc-sestamibi scanning correlating ischaemic territory with angiographic findings. METHODS:Consecutive patients attending for (99m) Tc-sestamibi myocardial perfusion imaging (MPI...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
doi:10.1007/s00259-006-0188-1
更新日期:2007-03-01 00:00:00