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Mannheim JG, Kara F, Doorduin J, Fuchs K, Reischl G, Liang S, Verhoye M, Gremse F, Mezzanotte L, Huisman MC. Standardization of Small Animal Imaging-Current Status and Future Prospects. Mol Imaging Biol 2019; 20:716-731. [PMID: 28971332 DOI: 10.1007/s11307-017-1126-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The benefit of small animal imaging is directly linked to the validity and reliability of the collected data. If the data (regardless of the modality used) are not reproducible and/or reliable, then the outcome of the data is rather questionable. Therefore, standardization of the use of small animal imaging equipment, as well as of animal handling in general, is of paramount importance. In a recent paper, guidance for efficient small animal imaging quality control was offered and discussed, among others, the use of phantoms in setting up a quality control program (Osborne et al. 2016). The same phantoms can be used to standardize image quality parameters for multi-center studies or multi-scanners within center studies. In animal experiments, the additional complexity due to animal handling needs to be addressed to ensure standardized imaging procedures. In this review, we will address the current status of standardization in preclinical imaging, as well as potential benefits from increased levels of standardization.
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Affiliation(s)
- Julia G Mannheim
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University Tuebingen, Roentgenweg 13, 72076, Tuebingen, Germany.
| | - Firat Kara
- Bio-Imaging Lab, University of Antwerp, Antwerp, Belgium
| | - Janine Doorduin
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Kerstin Fuchs
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University Tuebingen, Roentgenweg 13, 72076, Tuebingen, Germany
| | - Gerald Reischl
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University Tuebingen, Roentgenweg 13, 72076, Tuebingen, Germany
| | - Sayuan Liang
- Bio-Imaging Lab, University of Antwerp, Antwerp, Belgium
| | | | - Felix Gremse
- Institute for Experimental Molecular Imaging, RWTH Aachen University Clinic, Aachen, Germany
| | - Laura Mezzanotte
- Optical Molecular Imaging, Department of Radiology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Marc C Huisman
- Department of Radiology and Nuclear Medicine, VU University Medical Center, Amsterdam, The Netherlands
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Plant C, Teipel SJ, Oswald A, Böhm C, Meindl T, Mourao-Miranda J, Bokde AW, Hampel H, Ewers M. Automated detection of brain atrophy patterns based on MRI for the prediction of Alzheimer's disease. Neuroimage 2010; 50:162-74. [PMID: 19961938 PMCID: PMC2838472 DOI: 10.1016/j.neuroimage.2009.11.046] [Citation(s) in RCA: 170] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2009] [Revised: 11/13/2009] [Accepted: 11/18/2009] [Indexed: 12/15/2022] Open
Abstract
Subjects with mild cognitive impairment (MCI) have an increased risk to develop Alzheimer's disease (AD). Voxel-based MRI studies have demonstrated that widely distributed cortical and subcortical brain areas show atrophic changes in MCI, preceding the onset of AD-type dementia. Here we developed a novel data mining framework in combination with three different classifiers including support vector machine (SVM), Bayes statistics, and voting feature intervals (VFI) to derive a quantitative index of pattern matching for the prediction of the conversion from MCI to AD. MRI was collected in 32 AD patients, 24 MCI subjects and 18 healthy controls (HC). Nine out of 24 MCI subjects converted to AD after an average follow-up interval of 2.5 years. Using feature selection algorithms, brain regions showing the highest accuracy for the discrimination between AD and HC were identified, reaching a classification accuracy of up to 92%. The extracted AD clusters were used as a search region to extract those brain areas that are predictive of conversion to AD within MCI subjects. The most predictive brain areas included the anterior cingulate gyrus and orbitofrontal cortex. The best prediction accuracy, which was cross-validated via train-and-test, was 75% for the prediction of the conversion from MCI to AD. The present results suggest that novel multivariate methods of pattern matching reach a clinically relevant accuracy for the a priori prediction of the progression from MCI to AD.
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Affiliation(s)
- Claudia Plant
- Department of Neuroradiology, Technische Universität München, Munich, Germany
| | - Stefan J. Teipel
- Department of Psychiatry, University of Rostock, Germany,Department of Psychiatry, Ludwig-Maximilian University, Munich, Germany,Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Germany
| | - Annahita Oswald
- Department for Computer Science, University of Munich, Munich Germany
| | - Christian Böhm
- Department for Computer Science, University of Munich, Munich Germany
| | - Thomas Meindl
- Institute for Clinical Radiology,Department of MRI, Ziemssenstrasse 1, 80336 Munich, Germany
| | - Janaina Mourao-Miranda
- Centre for Computational Statistics and Machine Learning, University College London, London, UK,Centre for Neuroimaging Sciences, King's College London, London, UK
| | - Arun W. Bokde
- Department of Psychiatry, Ludwig-Maximilian University, Munich, Germany,Trinity College Dublin, School of Medicine, Discipline of Psychiatry & Trinity College Institute of neuroscience (TCIN) & The Adelaide and Meath Hospital Incorporating The National Children's Hospital (AMiNCH), Dublin, Ireland
| | - Harald Hampel
- Department of Psychiatry, Ludwig-Maximilian University, Munich, Germany,Trinity College Dublin, School of Medicine, Discipline of Psychiatry & Trinity College Institute of neuroscience (TCIN) & The Adelaide and Meath Hospital Incorporating The National Children's Hospital (AMiNCH), Dublin, Ireland
| | - Michael Ewers
- Department of Psychiatry, Ludwig-Maximilian University, Munich, Germany,Trinity College Dublin, School of Medicine, Discipline of Psychiatry & Trinity College Institute of neuroscience (TCIN) & The Adelaide and Meath Hospital Incorporating The National Children's Hospital (AMiNCH), Dublin, Ireland,Corresponding author. Discipline of Psychiatry, School of Medicine and Trinity College Institute of Neuroscience, Trinity College, University of Dublin, Trinity Centre for Health Sciences, The Adelaide and Meath Hospital Incorporating The National Children's Hospital (AMiNCH), Tallaght, Dublin 24, Ireland.
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