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Nolte P, Dullin C, Svetlove A, Brettmacher M, Rußmann C, Schilling AF, Alves F, Stock B. Current Approaches for Image Fusion of Histological Data with Computed Tomography and Magnetic Resonance Imaging. Radiol Res Pract 2022; 2022:6765895. [PMID: 36408297 PMCID: PMC9668453 DOI: 10.1155/2022/6765895] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 08/17/2022] [Indexed: 10/30/2023] Open
Abstract
Classical analysis of biological samples requires the destruction of the tissue's integrity by cutting or grinding it down to thin slices for (Immuno)-histochemical staining and microscopic analysis. Despite high specificity, encoded in the stained 2D section of the whole tissue, the structural information, especially 3D information, is limited. Computed tomography (CT) or magnetic resonance imaging (MRI) scans performed prior to sectioning in combination with image registration algorithms provide an opportunity to regain access to morphological characteristics as well as to relate histological findings to the 3D structure of the local tissue environment. This review provides a summary of prevalent literature addressing the problem of multimodal coregistration of hard- and soft-tissue in microscopy and tomography. Grouped according to the complexity of the dimensions, including image-to-volume (2D ⟶ 3D), image-to-image (2D ⟶ 2D), and volume-to-volume (3D ⟶ 3D), selected currently applied approaches are investigated by comparing the method accuracy with respect to the limiting resolution of the tomography. Correlation of multimodal imaging could position itself as a useful tool allowing for precise histological diagnostic and allow the a priori planning of tissue extraction like biopsies.
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Affiliation(s)
- Philipp Nolte
- Faculty of Engineering and Health, University of Applied Sciences and Arts, Goettingen 37085, Germany
- Institute for Diagnostic and Interventional Radiology, University Medical Center Goettingen, Goettingen 37075, Germany
- Department of Trauma Surgery, Orthopedics and Plastic Surgery, University Medical Center Goettingen, Gottingen 37075, Germany
| | - Christian Dullin
- Institute for Diagnostic and Interventional Radiology, University Medical Center Goettingen, Goettingen 37075, Germany
- Translational Molecular Imaging, Max-Planck Institute for Multidisciplinary Sciences, City Campus, 37075 Goettingen, Germany
- Department for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg 69120, Germany
| | - Angelika Svetlove
- Institute for Diagnostic and Interventional Radiology, University Medical Center Goettingen, Goettingen 37075, Germany
- Translational Molecular Imaging, Max-Planck Institute for Multidisciplinary Sciences, City Campus, 37075 Goettingen, Germany
| | - Marcel Brettmacher
- Faculty of Engineering and Health, University of Applied Sciences and Arts, Goettingen 37085, Germany
| | - Christoph Rußmann
- Faculty of Engineering and Health, University of Applied Sciences and Arts, Goettingen 37085, Germany
- Brigham and Women's Hospital, Harvard Medical School, Boston 02155, MA, USA
| | - Arndt F. Schilling
- Department of Trauma Surgery, Orthopedics and Plastic Surgery, University Medical Center Goettingen, Gottingen 37075, Germany
| | - Frauke Alves
- Institute for Diagnostic and Interventional Radiology, University Medical Center Goettingen, Goettingen 37075, Germany
- Translational Molecular Imaging, Max-Planck Institute for Multidisciplinary Sciences, City Campus, 37075 Goettingen, Germany
| | - Bernd Stock
- Faculty of Engineering and Health, University of Applied Sciences and Arts, Goettingen 37085, Germany
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2
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Correlation of in-vivo imaging with histopathology: A review. Eur J Radiol 2021; 144:109964. [PMID: 34619617 DOI: 10.1016/j.ejrad.2021.109964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 08/26/2021] [Accepted: 09/17/2021] [Indexed: 11/21/2022]
Abstract
Despite tremendous advancements in in vivo imaging modalities, there remains substantial uncertainty with respect to tumor delineation on in these images. Histopathology remains the gold standard for determining the extent of malignancy, with in vivo imaging to histopathologic correlation enabling spatial comparisons. In this review, the steps necessary for successful imaging to histopathologic correlation are described, including in vivo imaging, resection, fixation, specimen sectioning (sectioning technique, securing technique, orientation matching, slice matching), microtome sectioning and staining, correlation (including image registration) and performance evaluation. The techniques used for each of these steps are also discussed. Hundreds of publications from the past 20 years were surveyed, and 62 selected for detailed analysis. For these 62 publications, each stage of the correlative pathology process (and the sub-steps of specimen sectioning) are listed. A statistical analysis was conducted based on 19 studies that reported target registration error as their performance metric. While some methods promise greater accuracy, they may be expensive. Due to the complexity of the processes involved, correlative pathology studies generally include a small number of subjects, which hinders advanced developments in this field.
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Pichat J, Iglesias JE, Yousry T, Ourselin S, Modat M. A Survey of Methods for 3D Histology Reconstruction. Med Image Anal 2018; 46:73-105. [DOI: 10.1016/j.media.2018.02.004] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 02/02/2018] [Accepted: 02/14/2018] [Indexed: 02/08/2023]
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4
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Chicherova N, Hieber SE, Khimchenko A, Bikis C, Müller B, Cattin P. Automatic deformable registration of histological slides to μCT volume data. J Microsc 2018. [PMID: 29533457 DOI: 10.1111/jmi.12692] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Localizing a histological section in the three-dimensional dataset of a different imaging modality is a challenging 2D-3D registration problem. In the literature, several approaches have been proposed to solve this problem; however, they cannot be considered as fully automatic. Recently, we developed an automatic algorithm that could successfully find the position of a histological section in a micro computed tomography (μCT) volume. For the majority of the datasets, the result of localization corresponded to the manual results. However, for some datasets, the matching μCT slice was off the ground-truth position. Furthermore, elastic distortions, due to histological preparation, could not be accounted for in this framework. In the current study, we introduce two optimization frameworks based on normalized mutual information, which enabled us to accurately register histology slides to volume data. The rigid approach allocated 81 % of histological sections with a median position error of 8.4 μm in jaw bone datasets, and the deformable approach improved registration by 33 μm with respect to the median distance error for four histological slides in the cerebellum dataset.
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Affiliation(s)
- N Chicherova
- Center for medical Image Analysis & Navigation, Department of Biomedical Engineering, University of Basel, Allschwil, Switzerland.,Biomaterials Science Center, Department of Biomedical Engineering, University of Basel, Allschwil, Switzerland
| | - S E Hieber
- Biomaterials Science Center, Department of Biomedical Engineering, University of Basel, Allschwil, Switzerland
| | - A Khimchenko
- Biomaterials Science Center, Department of Biomedical Engineering, University of Basel, Allschwil, Switzerland
| | - C Bikis
- Biomaterials Science Center, Department of Biomedical Engineering, University of Basel, Allschwil, Switzerland
| | - B Müller
- Biomaterials Science Center, Department of Biomedical Engineering, University of Basel, Allschwil, Switzerland
| | - P Cattin
- Center for medical Image Analysis & Navigation, Department of Biomedical Engineering, University of Basel, Allschwil, Switzerland
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5
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Gangolli M, Holleran L, Hee Kim J, Stein TD, Alvarez V, McKee AC, Brody DL. Quantitative validation of a nonlinear histology-MRI coregistration method using generalized Q-sampling imaging in complex human cortical white matter. Neuroimage 2017; 153:152-167. [PMID: 28365421 DOI: 10.1016/j.neuroimage.2017.03.059] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 03/24/2017] [Accepted: 03/29/2017] [Indexed: 12/14/2022] Open
Abstract
Advanced diffusion MRI methods have recently been proposed for detection of pathologies such as traumatic axonal injury and chronic traumatic encephalopathy which commonly affect complex cortical brain regions. However, radiological-pathological correlations in human brain tissue that detail the relationship between the multi-component diffusion signal and underlying pathology are lacking. We present a nonlinear voxel based two dimensional coregistration method that is useful for matching diffusion signals to quantitative metrics of high resolution histological images. When validated in ex vivo human cortical tissue at a 250×250×500 μm spatial resolution, the method proved robust in correlations between generalized q-sampling imaging and histologically based white matter fiber orientations, with r=0.94 for the primary fiber direction and r=0.88 for secondary fiber direction in each voxel. Importantly, however, the correlation was substantially worse with reduced spatial resolution or with fiber orientations derived using a diffusion tensor model. Furthermore, we have detailed a quantitative histological metric of white matter fiber integrity termed power coherence capable of distinguishing architecturally complex but intact white matter from disrupted white matter regions. These methods may allow for more sensitive and specific radiological-pathological correlations of neurodegenerative diseases affecting complex gray and white matter.
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Affiliation(s)
- Mihika Gangolli
- Department of Biomedical Engineering, Washington University School of Medicine, St. Louis, MO, USA
| | - Laurena Holleran
- Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA
| | - Joong Hee Kim
- Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA
| | - Thor D Stein
- Boston University Alzheimer's Disease and CTE Center, Boston University School of Medicine, Boston, MA, USA; VA Boston Healthcare System, Boston, MA, USA
| | - Victor Alvarez
- Boston University Alzheimer's Disease and CTE Center, Boston University School of Medicine, Boston, MA, USA; VA Boston Healthcare System, Boston, MA, USA
| | - Ann C McKee
- Boston University Alzheimer's Disease and CTE Center, Boston University School of Medicine, Boston, MA, USA; VA Boston Healthcare System, Boston, MA, USA
| | - David L Brody
- Department of Biomedical Engineering, Washington University School of Medicine, St. Louis, MO, USA; Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA; Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, MO, USA.
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Luciano NJ, Sati P, Nair G, Guy JR, Ha SK, Absinta M, Chiang WY, Leibovitch EC, Jacobson S, Silva AC, Reich DS. Utilizing 3D Printing Technology to Merge MRI with Histology: A Protocol for Brain Sectioning. J Vis Exp 2016. [PMID: 28060281 PMCID: PMC5226356 DOI: 10.3791/54780] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Magnetic resonance imaging (MRI) allows for the delineation between normal and abnormal tissue on a macroscopic scale, sampling an entire tissue volume three-dimensionally. While MRI is an extremely sensitive tool for detecting tissue abnormalities, association of signal changes with an underlying pathological process is usually not straightforward. In the central nervous system, for example, inflammation, demyelination, axonal damage, gliosis, and neuronal death may all induce similar findings on MRI. As such, interpretation of MRI scans depends on the context, and radiological-histopathological correlation is therefore of the utmost importance. Unfortunately, traditional pathological sectioning of brain tissue is often imprecise and inconsistent, thus complicating the comparison between histology sections and MRI. This article presents novel methodology for accurately sectioning primate brain tissues and thus allowing precise matching between histology and MRI. The detailed protocol described in this article will assist investigators in applying this method, which relies on the creation of 3D printed brain slicers. Slightly modified, it can be easily implemented for brains of other species, including humans.
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Affiliation(s)
- Nicholas J Luciano
- Translational Neuroradiology Section, National Institute of Neurological Disorders and Stroke
| | - Pascal Sati
- Translational Neuroradiology Section, National Institute of Neurological Disorders and Stroke
| | - Govind Nair
- Translational Neuroradiology Section, National Institute of Neurological Disorders and Stroke
| | - Joseph R Guy
- Translational Neuroradiology Section, National Institute of Neurological Disorders and Stroke
| | - Seung-Kwon Ha
- Translational Neuroradiology Section, National Institute of Neurological Disorders and Stroke
| | - Martina Absinta
- Translational Neuroradiology Section, National Institute of Neurological Disorders and Stroke
| | - Wen-Yang Chiang
- Cerebral Microcirculation Section, National Institute of Neurological Disorders and Stroke
| | - Emily C Leibovitch
- Viral Immunology Section, National Institute of Neurological Disorders and Stroke
| | - Steven Jacobson
- Viral Immunology Section, National Institute of Neurological Disorders and Stroke
| | - Afonso C Silva
- Cerebral Microcirculation Section, National Institute of Neurological Disorders and Stroke
| | - Daniel S Reich
- Translational Neuroradiology Section, National Institute of Neurological Disorders and Stroke;
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Shojaii R, Martel AL. Optimized SIFTFlow for registration of whole-mount histology to reference optical images. J Med Imaging (Bellingham) 2016; 3:047501. [PMID: 27774494 DOI: 10.1117/1.jmi.3.4.047501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 09/28/2016] [Indexed: 11/14/2022] Open
Abstract
The registration of two-dimensional histology images to reference images from other modalities is an important preprocessing step in the reconstruction of three-dimensional histology volumes. This is a challenging problem because of the differences in the appearances of histology images and other modalities, and the presence of large nonrigid deformations which occur during slide preparation. This paper shows the feasibility of using densely sampled scale-invariant feature transform (SIFT) features and a SIFTFlow deformable registration algorithm for coregistering whole-mount histology images with blockface optical images. We present a method for jointly optimizing the regularization parameters used by the SIFTFlow objective function and use it to determine the most appropriate values for the registration of breast lumpectomy specimens. We demonstrate that tuning the regularization parameters results in significant improvements in accuracy and we also show that SIFTFlow outperforms a previously described edge-based registration method. The accuracy of the histology images to blockface images registration using the optimized SIFTFlow method was assessed using an independent test set of images from five different lumpectomy specimens and the mean registration error was [Formula: see text].
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Affiliation(s)
- Rushin Shojaii
- University of Toronto , Department of Medical Biophysics, 2075 Bayview Avenue, Toronto, Ontario M4N 3M5, Canada
| | - Anne L Martel
- University of Toronto, Department of Medical Biophysics, 2075 Bayview Avenue, Toronto, Ontario M4N 3M5, Canada; Sunnybrook Research Institute, Physical Sciences, 2075 Bayview Avenue, Toronto, Ontario M4N 3M5, Canada
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Shojaii R, Bacopulos S, Yang W, Karavardanyan T, Spyropoulos D, Raouf A, Martel A, Seth A. Reconstruction of 3-dimensional histology volume and its application to study mouse mammary glands. J Vis Exp 2014:e51325. [PMID: 25145969 DOI: 10.3791/51325] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Histology volume reconstruction facilitates the study of 3D shape and volume change of an organ at the level of macrostructures made up of cells. It can also be used to investigate and validate novel techniques and algorithms in volumetric medical imaging and therapies. Creating 3D high-resolution atlases of different organs(1,2,3) is another application of histology volume reconstruction. This provides a resource for investigating tissue structures and the spatial relationship between various cellular features. We present an image registration approach for histology volume reconstruction, which uses a set of optical blockface images. The reconstructed histology volume represents a reliable shape of the processed specimen with no propagated post-processing registration error. The Hematoxylin and Eosin (H&E) stained sections of two mouse mammary glands were registered to their corresponding blockface images using boundary points extracted from the edges of the specimen in histology and blockface images. The accuracy of the registration was visually evaluated. The alignment of the macrostructures of the mammary glands was also visually assessed at high resolution. This study delineates the different steps of this image registration pipeline, ranging from excision of the mammary gland through to 3D histology volume reconstruction. While 2D histology images reveal the structural differences between pairs of sections, 3D histology volume provides the ability to visualize the differences in shape and volume of the mammary glands.
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Affiliation(s)
- Rushin Shojaii
- Department of Medical Biophysics, University of Toronto;
| | - Stephanie Bacopulos
- Platform Biological Sciences, Sunnybrook Research Institute; Department of Laboratory Medicine and Pathobiology, University of Toronto
| | - Wenyi Yang
- Platform Biological Sciences, Sunnybrook Research Institute; Department of Laboratory Medicine and Pathobiology, University of Toronto
| | | | - Demetri Spyropoulos
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina
| | - Afshin Raouf
- Manitoba Institute of Cell Biology, University of Manitoba
| | - Anne Martel
- Department of Medical Biophysics, University of Toronto; Physical Sciences, Sunnybrook Research Institute
| | - Arun Seth
- Platform Biological Sciences, Sunnybrook Research Institute; Department of Laboratory Medicine and Pathobiology, University of Toronto
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9
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Gibson E, Gaed M, Gómez JA, Moussa M, Romagnoli C, Pautler S, Chin JL, Crukley C, Bauman GS, Fenster A, Ward AD. 3D prostate histology reconstruction: an evaluation of image-based and fiducial-based algorithms. Med Phys 2014; 40:093501. [PMID: 24007184 DOI: 10.1118/1.4816946] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
PURPOSE Evaluation of in vivo prostate imaging modalities for determining the spatial distribution and aggressiveness of prostate cancer ideally requires accurate registration of images to an accepted reference standard, such as histopathological examination of radical prostatectomy specimens. Three-dimensional (3D) reconstruction of prostate histology facilitates these registration-based evaluations by reintroducing 3D spatial information lost during histology processing. Because the reconstruction accuracy may constrain the clinical questions that can be answered with these data, it is important to assess the tradeoffs between minimally disruptive methods based on intrinsic image information and potentially more robust methods based on extrinsic fiducial markers. METHODS Ex vivo magnetic resonance (MR) images and digitized whole-mount histology images from 12 radical prostatectomy specimens were used to evaluate four 3D histology reconstruction algorithms. 3D reconstructions were computed by registering each histology image to the corresponding ex vivo MR image using one of two similarity metrics (mutual information or fiducial registration error) and one of two search domains (affine transformations or a constrained subset thereof). The algorithms were evaluated for accuracy using the mean target registration error (TRE) computed from homologous intrinsic point landmarks (3-16 per histology section; 232 total) identified on histology and MR images, and for the sensitivity of TRE to rotational, translational, and scaling initialization errors. RESULTS The algorithms using fiducial registration error and mutual information had mean ± standard deviation TREs of 0.7 ± 0.4 and 1.2 ± 0.7 mm, respectively, and one algorithm using fiducial registration error and affine transforms had negligible sensitivities to initialization errors. The postoptimization values of the mutual information-based metric showed evidence of errors due to both the optimizer and the similarity metric, and variation of parameters of the mutual information-based metric did not improve its performance. CONCLUSIONS The extrinsic fiducial-based algorithm had lower mean TRE and lower sensitivity to initialization than the intrinsic intensity-based algorithm using mutual information. A model relating statistical power to registration error for certain imaging validation study designs estimated that a reconstruction algorithm with a mean TRE of 0.7 mm would require 27% fewer subjects than the method used to initialize the algorithms (mean TRE 1.3 ± 0.7 mm), suggesting the choice of reconstruction technique can have a substantial impact on the design of imaging validation studies, and on their overall cost.
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Affiliation(s)
- E Gibson
- Biomedical Engineering Graduate Program, The University of Western Ontario, London, Ontario N6A 5B9, Canada.
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10
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McJunkin TR, Trowbridge TL, Wright KE, Scott JR. Integrated fiducial sample mount and software for correlated microscopy. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:023701. [PMID: 24593365 DOI: 10.1063/1.4862935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A novel sample mount design with integrated fiducial marks and software for assisting operators in easily and efficiently locating points of interest established in previous analytical sessions is described. The sample holder and software were evaluated with experiments to demonstrate the utility and ease of finding the same points of interest in two different microscopy instruments. Also, numerical analysis of expected errors in determining the same position with errors unbiased by a human operator was performed. Based on the results, issues related to acquiring reproducibility and best practices for using the sample mount and software were identified. Overall, the sample mount methodology allows data to be efficiently and easily collected on different instruments for the same sample location.
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Affiliation(s)
| | | | - Karen E Wright
- Idaho National Laboratory, Idaho Falls, Idaho 83415, USA
| | - Jill R Scott
- Idaho National Laboratory, Idaho Falls, Idaho 83415, USA
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11
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Adler DH, Pluta J, Kadivar S, Craige C, Gee JC, Avants BB, Yushkevich PA. Histology-derived volumetric annotation of the human hippocampal subfields in postmortem MRI. Neuroimage 2013; 84:505-23. [PMID: 24036353 DOI: 10.1016/j.neuroimage.2013.08.067] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 08/09/2013] [Accepted: 08/29/2013] [Indexed: 10/26/2022] Open
Abstract
Recently, there has been a growing effort to analyze the morphometry of hippocampal subfields using both in vivo and postmortem magnetic resonance imaging (MRI). However, given that boundaries between subregions of the hippocampal formation (HF) are conventionally defined on the basis of microscopic features that often lack discernible signature in MRI, subfield delineation in MRI literature has largely relied on heuristic geometric rules, the validity of which with respect to the underlying anatomy is largely unknown. The development and evaluation of such rules are challenged by the limited availability of data linking MRI appearance to microscopic hippocampal anatomy, particularly in three dimensions (3D). The present paper, for the first time, demonstrates the feasibility of labeling hippocampal subfields in a high resolution volumetric MRI dataset based directly on microscopic features extracted from histology. It uses a combination of computational techniques and manual post-processing to map subfield boundaries from a stack of histology images (obtained with 200μm spacing and 5μm slice thickness; stained using the Kluver-Barrera method) onto a postmortem 9.4Tesla MRI scan of the intact, whole hippocampal formation acquired with 160μm isotropic resolution. The histology reconstruction procedure consists of sequential application of a graph-theoretic slice stacking algorithm that mitigates the effects of distorted slices, followed by iterative affine and diffeomorphic co-registration to postmortem MRI scans of approximately 1cm-thick tissue sub-blocks acquired with 200μm isotropic resolution. These 1cm blocks are subsequently co-registered to the MRI of the whole HF. Reconstruction accuracy is evaluated as the average displacement error between boundaries manually delineated in both the histology and MRI following the sequential stages of reconstruction. The methods presented and evaluated in this single-subject study can potentially be applied to multiple hippocampal tissue samples in order to construct a histologically informed MRI atlas of the hippocampal formation.
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Affiliation(s)
- Daniel H Adler
- Penn Image Computing and Science Laboratory (PICSL), Department of Radiology, University of Pennsylvania, 3600 Market Street, Suite 370, Philadelphia, PA 19104, USA; Department of Bioengineering, University of Pennsylvania, USA.
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12
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Jiang L, Greenwood TR, Amstalden van Hove ER, Chughtai K, Raman V, Winnard PT, Heeren R, Artemov D, Glunde K. Combined MR, fluorescence and histology imaging strategy in a human breast tumor xenograft model. NMR IN BIOMEDICINE 2013; 26:285-298. [PMID: 22945331 PMCID: PMC4162316 DOI: 10.1002/nbm.2846] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Revised: 07/25/2012] [Accepted: 07/26/2012] [Indexed: 05/29/2023]
Abstract
Applications of molecular imaging in cancer and other diseases frequently require the combination of in vivo imaging modalities, such as MR and optical imaging, with ex vivo optical, fluorescence, histology and immunohistochemical imaging to investigate and relate molecular and biological processes to imaging parameters within the same region of interest. We have developed a multimodal image reconstruction and fusion framework that accurately combines in vivo MRI and MRSI, ex vivo brightfield and fluorescence microscopic imaging and ex vivo histology imaging. Ex vivo brightfield microscopic imaging was used as an intermediate modality to facilitate the ultimate link between ex vivo histology and in vivo MRI/MRSI. Tissue sectioning necessary for optical and histology imaging required the generation of a three-dimensional reconstruction module for two-dimensional ex vivo optical and histology imaging data. We developed an external fiducial marker-based three-dimensional reconstruction method, which was able to fuse optical brightfield and fluorescence with histology imaging data. The registration of the three-dimensional tumor shape was pursued to combine in vivo MRI/MRSI and ex vivo optical brightfield and fluorescence imaging data. This registration strategy was applied to in vivo MRI/MRSI, ex vivo optical brightfield/fluorescence and histology imaging datasets obtained from human breast tumor models. Three-dimensional human breast tumor datasets were successfully reconstructed and fused with this platform.
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Affiliation(s)
- Lu Jiang
- The Johns Hopkins University In Vivo Cellular and Molecular Imaging Center, Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Tiffany R. Greenwood
- The Johns Hopkins University In Vivo Cellular and Molecular Imaging Center, Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | - Kamila Chughtai
- FOM-Institute for Atomic and Molecular Physics, Amsterdam, The Netherlands
| | - Venu Raman
- The Johns Hopkins University In Vivo Cellular and Molecular Imaging Center, Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Paul T. Winnard
- The Johns Hopkins University In Vivo Cellular and Molecular Imaging Center, Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Ron Heeren
- FOM-Institute for Atomic and Molecular Physics, Amsterdam, The Netherlands
| | - Dmitri Artemov
- The Johns Hopkins University In Vivo Cellular and Molecular Imaging Center, Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Kristine Glunde
- The Johns Hopkins University In Vivo Cellular and Molecular Imaging Center, Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Hughes C, Rouvière O, Mege-Lechevallier F, Souchon R, Prost R. Robust Alignment of Prostate Histology Slices With Quantified Accuracy. IEEE Trans Biomed Eng 2013; 60:281-91. [DOI: 10.1109/tbme.2012.2225835] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Registration of prostate histology images to ex vivo MR images via strand‐shaped fiducials. J Magn Reson Imaging 2012; 36:1402-12. [DOI: 10.1002/jmri.23767] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Accepted: 06/29/2012] [Indexed: 11/07/2022] Open
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15
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Kimm SY, Tarin TV, Lee JH, Hu B, Jensen K, Nishimura D, Brooks JD. Methods for registration of magnetic resonance images of ex vivo prostate specimens with histology. J Magn Reson Imaging 2012; 36:206-212. [DOI: 10.1002/jmri.23614] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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16
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Chughtai K, Jiang L, Greenwood TR, Klinkert I, Amstalden van Hove ER, Heeren RMA, Glunde K. Fiducial markers for combined 3-dimensional mass spectrometric and optical tissue imaging. Anal Chem 2012; 84:1817-23. [PMID: 22283706 PMCID: PMC3302962 DOI: 10.1021/ac203373h] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Mass spectrometric imaging (MSI) has become widely used in the analysis of a variety of biological surfaces. Biological samples are spatially, morphologically, and metabolically complex. Multimodal molecular imaging is an emerging approach that is capable of dealing with this complexity. In a multimodal approach, different imaging modalities can provide precise information about the local molecular composition of the surfaces. Images obtained by MSI can be coregistered with images obtained by other molecular imaging techniques such as microscopic images of fluorescent protein expression or histologically stained sections. In order to properly coregister images from different modalities, each tissue section must contain points of reference, which are visible in all data sets. Here, we report a newly developed coregistration technique using fiducial markers such as cresyl violet, Ponceau S, and bromophenol blue that possess a combination of optical and molecular properties that result in a clear mass spectrometric signature. We describe these fiducial markers and demonstrate an application that allows accurate coregistration and 3-dimensional reconstruction of serial histological and fluorescent microscopic images with MSI images of thin tissue sections from a breast tumor model.
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Affiliation(s)
- Kamila Chughtai
- FOM Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
| | - Lu Jiang
- JHU ICMIC Program, The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, 212 Traylor Building, 720 Rutland Avenue, Baltimore, MD 21205, USA
| | - Tiffany R. Greenwood
- JHU ICMIC Program, The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, 212 Traylor Building, 720 Rutland Avenue, Baltimore, MD 21205, USA
| | - Ivo Klinkert
- FOM Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
| | | | - Ron M. A. Heeren
- FOM Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
- The Netherlands Proteomics Centre, P.O. Box 80082, 3508 TB Utrecht, The Netherlands
| | - Kristine Glunde
- JHU ICMIC Program, The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, 212 Traylor Building, 720 Rutland Avenue, Baltimore, MD 21205, USA
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
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17
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Seise M, Alhonnoro T, Kolesnik M. Interactive registration of 2D histology and 3D CT data for assessment of radiofrequency ablation treatment. J Pathol Inform 2012; 2:S9. [PMID: 22811965 PMCID: PMC3312715 DOI: 10.4103/2153-3539.92036] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Accepted: 10/20/2011] [Indexed: 11/05/2022] Open
Abstract
Histological investigation of a lesion induced by radiofrequency ablation (RFA) treatment provides ground-truth about the true lesion size, thus verifying the success or failure of the RFA treatment. This work presents a framework for registration of two-dimensional large-scale histological sections and three-dimensional CT data typically used to guide the RFA intervention. The focus is on the developed interactive methods for reconstruction of the histological volume data by fusion of histological and high-resolution CT (MicroCT) data and registration into CT data based on natural feature points. The framework is evaluated using RFA interventions in a porcine liver and applying medically relevant metrics. The results of registration are within clinically required precision targets; thus the developed methods are suitable for validation of the RFA treatment.
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Affiliation(s)
- Matthias Seise
- Fraunhofer Institute for Applied Information Technology, D-53754 Schloss Birlinghoven, Germany
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18
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McGrath DM, Foltz WD, Al-Mayah A, Niu CJ, Brock KK. Quasi-static magnetic resonance elastography at 7 T to measure the effect of pathology before and after fixation on tissue biomechanical properties. Magn Reson Med 2011; 68:152-65. [DOI: 10.1002/mrm.23223] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Revised: 08/15/2011] [Accepted: 08/29/2011] [Indexed: 01/22/2023]
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19
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Nabuurs RJA, Hegeman I, Natté R, van Duinen SG, van Buchem MA, van der Weerd L, Webb AG. High-field MRI of single histological slices using an inductively coupled, self-resonant microcoil: application to ex vivo samples of patients with Alzheimer's disease. NMR IN BIOMEDICINE 2011; 24:351-357. [PMID: 20960578 DOI: 10.1002/nbm.1598] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2010] [Revised: 07/08/2010] [Accepted: 07/09/2010] [Indexed: 05/30/2023]
Abstract
A simple inductively coupled microcoil has been designed to image tissue samples placed on a microscope slide, samples which can subsequently be stained histologically. As the exact same tissue is used for MRI and histology, the two data sets can be compared without the need for complicated image registration techniques. The design can be integrated into any MRI system using existing commercial hardware. Compared with a commercial 25-mm-diameter birdcage, the signal-to-noise ratio was increased by a factor of 3.8, corresponding to an approximate 15-fold reduction in the data acquisition time. An example is shown of ex vivo samples from patients with Alzheimer's disease, in which the coregistration of highly sensitive iron staining and amyloid-β deposits is confirmed.
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Affiliation(s)
- Rob J A Nabuurs
- Department of Radiology, C. J. Gorter Center for High Field MRI, Leiden University Medical Center, the Netherlands
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20
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Haney CR, Pelizzari CA, Foxley S, Zamora MA, Mustafi D, Tretiakova M, Li S, Fan X, Karczmar GS. HiSStology: high spectral and spatial resolution magnetic resonance imaging detection of vasculature validated by histology and micro-computed tomography. Mol Imaging 2011; 10:187-96. [PMID: 21443840 DOI: 10.2310/7290.2010.00033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2010] [Accepted: 03/31/2010] [Indexed: 11/18/2022] Open
Abstract
High spectral and spatial resolution (HiSS) data, acquired with echo-planar spectroscopic imaging (EPSI), can be used to acquire water spectra from each small image voxel. These images are sensitive to changes in local susceptibility caused by superparamagnetic iron oxide particles (SPIO); therefore, we hypothesized that images derived from HiSS data are very sensitive to tumor neovasculature following injection of SPIO. Accurate image registration was used to validate HiSS detection of neovasculature with histology and micro-computed tomographic (microCT) angiography. Athymic nude mice and Copenhagen rats were inoculated with Dunning AT6.1 prostate tumor cells in the right hind limb. The tumor region was imaged pre- and post-intravenous injection of SPIO. Three-dimensional assemblies of the CD31-stained histologic slices of the mouse legs and the microCT images of the rat vascular casts were registered with EPSI. The average distance between HiSS-predicted regions of high vascular density on magnetic resonance imaging and CD31-stained regions on histology was 200 μm. Similarly, vessels identified by HiSS in the rat images coincided with vasculature in the registered microCT image. The data demonstrate a strong correlation between tumor vasculature identified using HiSS and two gold standards: histology and microCT angiography.
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Affiliation(s)
- Chad R Haney
- Department of Radiology, University of Chicago, Chicago, IL 60637, USA.
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21
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Cifor A, Bai L, Pitiot A. Smoothness-guided 3-D reconstruction of 2-D histological images. Neuroimage 2011; 56:197-211. [PMID: 21277374 DOI: 10.1016/j.neuroimage.2011.01.060] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Accepted: 01/20/2011] [Indexed: 10/18/2022] Open
Abstract
This paper tackles two problems: (1) the reconstruction of 3-D volumes from 2-D post-mortem slices (e.g., histology, autoradiography, immunohistochemistry) in the absence of external reference, and (2) the quantitative evaluation of the 3-D reconstruction. We note that the quality of a reconstructed volume is usually assessed by considering the smoothness of some reconstructed structures of interest (e.g., the gray-white matter surfaces in brain images). Here we propose to use smoothness as a means to drive the reconstruction process itself. From a pair-wise rigid reconstruction of the 2-D slices, we first extract the boundaries of structures of interest. Those are then smoothed with a min-max curvature flow confined to the 2-D planes in which the slices lie. Finally, for each slice, we estimate a linear or flexible transformation from the sparse displacement field computed from the flow, which we apply to the original 2-D slices to obtain a smooth volume. In addition, we present a co-occurrence matrix-based technique to quantify the smoothness of reconstructed volumes. We discuss and validate the application of both our reconstruction approach and the smoothness measure on synthetic examples as well as real histological data.
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22
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Xiao G, Bloch BN, Chappelow J, Genega EM, Rofsky NM, Lenkinski RE, Tomaszewski J, Feldman MD, Rosen M, Madabhushi A. Determining histology-MRI slice correspondences for defining MRI-based disease signatures of prostate cancer. Comput Med Imaging Graph 2011; 35:568-78. [PMID: 21255974 DOI: 10.1016/j.compmedimag.2010.12.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2010] [Revised: 12/10/2010] [Accepted: 12/13/2010] [Indexed: 11/30/2022]
Abstract
Mapping the spatial disease extent in a certain anatomical organ/tissue from histology images to radiological images is important in defining the disease signature in the radiological images. One such scenario is in the context of men with prostate cancer who have had pre-operative magnetic resonance imaging (MRI) before radical prostatectomy. For these cases, the prostate cancer extent from ex vivo whole-mount histology is to be mapped to in vivo MRI. The need for determining radiology-image-based disease signatures is important for (a) training radiologist residents and (b) for constructing an MRI-based computer aided diagnosis (CAD) system for disease detection in vivo. However, a prerequisite for this data mapping is the determination of slice correspondences (i.e. indices of each pair of corresponding image slices) between histological and magnetic resonance images. The explicit determination of such slice correspondences is especially indispensable when an accurate 3D reconstruction of the histological volume cannot be achieved because of (a) the limited tissue slices with unknown inter-slice spacing, and (b) obvious histological image artifacts (tissue loss or distortion). In the clinic practice, the histology-MRI slice correspondences are often determined visually by experienced radiologists and pathologists working in unison, but this procedure is laborious and time-consuming. We present an iterative method to automatically determine slice correspondence between images from histology and MRI via a group-wise comparison scheme, followed by 2D and 3D registration. The image slice correspondences obtained using our method were compared with the ground truth correspondences determined via consensus of multiple experts over a total of 23 patient studies. In most instances, the results of our method were very close to the results obtained via visual inspection by these experts.
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Affiliation(s)
- Gaoyu Xiao
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA.
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23
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Three-dimensional cardiac tissue image registration for analysis of in vivo electrical mapping. Ann Biomed Eng 2010; 39:235-48. [PMID: 20853026 DOI: 10.1007/s10439-010-0163-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2010] [Accepted: 09/03/2010] [Indexed: 10/19/2022]
Abstract
A method is presented for registering 3D cardiac tissue images to reference data, for the purpose of analyzing recorded electrical activity. Following left-ventricular in vivo electrical mapping studies in pig hearts, MRI is used to define a reference geometry in the tissue segment around the recording electrodes. The segment is then imaged in 3D using a high-resolution serial imaging microscopy technique. The tissue processing required for this introduces segment-wide distortion. Piecewise-smooth maps are used to correct the tissue distortion and register the 3D images with the reference MRI data. The methods are validated and techniques for identifying the preferred maps are proposed. Recorded electrical activation is shown to map reliably onto cardiac tissue structure using this registration method.
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24
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McGrath DM, Vlad RM, Foltz WD, Brock KK. Technical note: fiducial markers for correlation of whole-specimen histopathology with MR imaging at 7 tesla. Med Phys 2010; 37:2321-8. [PMID: 20527566 DOI: 10.1118/1.3395575] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE There is increasing interest in the registration of 3-D histopathology with 3-D in vivo imaging, for example, to validate tumor boundary delineation for targeted radiation cancer therapy. However, accurate correlation is compromised by tissue distortion induced by histopathological processing. Reference landmarks that are visible in both data sets are required. In this study, two iridescent acrylic paints, "Bronze" (containing iron oxide coated mica particles) and "Stainless Steel" (containing iron, chromium, and nickel), were evaluated for creating MRI-visible and histology-visible fiducial markers at 7 T, where resolution is more similar to histology, but artifacts are accentuated. Furthermore, a straight-line paint-track fiducial method was developed to assist in registration and 3-D histopathology reconstruction. METHODS First, the paints were injected into ex vivo porcine tissue samples, which were MR imaged prefixation and postfixation, and subsequently prepared for hematoxylin and eosin staining to verify stability through histopathological processing. Second, the severity of marker susceptibility artifacts produced was compared while using spin-echo and gradient-echo MRI pulse sequences. Finally, multiple paint tracks were injected prefixation through an ex vivo canine prostate sample to validate the potential for line-based registration between MR images of prefixation and postfixation tissue and whole mount histology slides. RESULTS The Stainless Steel paint produced excessive susceptibility artifacts and image distortion, while the Bronze paint created stable and appropriate markers in MRI and histology. The Bronze paint produced artifacts approximately three times larger in gradient-echo than in spin-echo MR images. Finally, the paint-track fiducials were visible in the prefixation and postfixation MRI and on whole mount histology. CONCLUSIONS The Bronze iridescent acrylic paint is appropriate for fiducial marker creation in MRI at 7 T. The straight-line paint-track fiducials may assist 3-D histopathology reconstruction and can provide important information on the deformation effects of fixation, and hence may improve registration accuracy.
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Affiliation(s)
- Deirdre M McGrath
- Radiation Medicine Program, Princess Margaret Hospital, University Health Network, Toronto, Ontario M5G 2M9, Canada.
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25
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Optimum slicing of radical prostatectomy specimens for correlation between histopathology and medical images. Int J Comput Assist Radiol Surg 2010; 5:471-87. [DOI: 10.1007/s11548-010-0405-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2009] [Accepted: 01/15/2010] [Indexed: 12/13/2022]
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26
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Scheenstra AE, van de Ven RC, van der Weerd L, van den Maagdenberg AM, Dijkstra J, Reiber JH. Automated Segmentation of in Vivo and Ex Vivo Mouse Brain Magnetic Resonance Images. Mol Imaging 2009. [DOI: 10.2310/7290.2009.00004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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27
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Christian N, Lee JA, Bol A, De Bast M, Gallez B, Grégoire V. Immobilization device for in vivo and in vitro multimodality image registration of rodent tumors. Radiother Oncol 2008; 87:147-51. [DOI: 10.1016/j.radonc.2008.02.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2007] [Revised: 02/14/2008] [Accepted: 02/14/2008] [Indexed: 10/22/2022]
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28
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Weinberg BD, Krupka TM, Haaga JR, Exner AA. Combination of sensitizing pretreatment and radiofrequency tumor ablation: evaluation in rat model. Radiology 2008; 246:796-803. [PMID: 18309015 DOI: 10.1148/radiol.2463070228] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE To prospectively determine, in an animal tumor model, if the block copolymer Pluronic P85 (BASF, Shreveport, La) sensitizes cancer cells to hyperthermia and if intratumorally or intravenously administered copolymer improves the therapeutic outcome of radiofrequency (RF) ablation tumor treatment. MATERIALS AND METHODS The effects of Pluronic P85 and mild hyperthermia in vitro were tested in DHD/K12/TRb rat colorectal carcinoma cells. Cells were incubated at 37 degrees C or 43 degrees C for 15-60 minutes with 0%, 7%, or 10% wt/wt Pluronic P85, and cell viability was assessed by using a mitochondrial enzyme assay. In vivo experiments were performed as approved by the Institutional Animal Care and Use Committee at Case Western Reserve University and according to all applicable guidelines on animal use. Bilateral subcutaneous tumors in rats were treated with either intratumoral (13 tumors) or intravenous (15 tumors) Pluronic P85 followed by ablation or with ablation alone (14 tumors) and were monitored for 14 days by using volumes estimated from caliper measurements of tumor diameter. Acute effects of Pluronic P85 on the size of ablation-induced coagulation were measured after 24 hours in additional tumors (six tumors each treated according to the protocol for the ablation-only, intratumoral injection, and intravenous injection groups). Statistical testing was performed by using linear regression analysis and two-sided t tests with a significance level of .05. RESULTS At 43 degrees C, 7% and 10% Pluronic P85 reduced in vitro cell viability by 22% +/- 5 (standard error of the mean) (P < .001) and 28% +/- 5 (P < .001), respectively, compared with the viability of control cells. At day 14, the volume of tumors ablated after local and systemic Pluronic P85 pretreatment changed by -55% +/- 14 (P = .03) and -59% +/- 14 (P = .02), respectively, compared with an increase of 16% +/- 28 for tumors treated with ablation alone. Coagulation area at 24 hours was reduced by 44% relative to that in control tumors (P = .03) after intratumoral Pluronic P85 but was unchanged after systemic Pluronic P85. CONCLUSION Tumor pretreatment with Pluronic P85 improved the outcome of RF ablation by decreasing the tumor volume and residual tumor in an experimental carcinoma model.
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Affiliation(s)
- Brent D Weinberg
- Department of Biomedical Engineering, Case Western Reserve University, 11100 Euclid Ave, Cleveland, OH 44106-5056, USA
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29
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Krupka TM, Weinberg BD, Ziats NP, Haaga JR, Exner AA. Injectable polymer depot combined with radiofrequency ablation for treatment of experimental carcinoma in rat. Invest Radiol 2007; 41:890-7. [PMID: 17099428 DOI: 10.1097/01.rli.0000246102.56801.2f] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
OBJECTIVE The purpose of this study was to investigate whether an intralesional chemotherapy depot with or without a chemosensitizer could improve the efficacy of radiofrequency (RF) ablation in treatment of experimental carcinoma in rats. MATERIALS AND METHODS Eighteen BD-IX rats were inoculated with bilateral subcutaneous tumors via injection of DHD/K12TRb rat colorectal carcinoma cells in suspension. Four weeks after inoculation, one tumor in each rat was treated with RF ablation at 80 degrees C for 2 minutes and the other with RF ablation followed by intralesional chemotherapy with carboplatin. The drug was administered via 2 different in situ-forming poly(D,L-lactide-coglycolide) (PLGA) depot formulations either with or without a chemosensitizer. Treatment efficacy was assessed by comparing the change in tumor diameter compared with control, percent of coagulation necrosis and a rating of treatment completeness. RESULTS Tumors treated with ablation and carboplatin + sensitizer (n = 9) showed a diameter decrease of 49.4 +/- 24.5% at the end point relative to ablation control, while those treated with ablation and carboplatin only (n = 8) showed a 7.1 +/- 12.6% decrease. Use of sensitizer also showed increased tissue necrosis (81.9 +/- 9.7% compared with 68.7 +/- 26.7% for ablation only) and double the number of complete treatments (6/9 or 66.7%) compared with ablation control (3/9 or 33.3%). CONCLUSIONS From these results, we conclude that intralesional administration of a carboplatin and sensitizer-loaded polymer depot after RF ablation has the potential to improve the outcome of ablation by increasing effectiveness of local adjuvant chemotherapy in preventing progression of tumor unaffected by the ablation treatment.
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Affiliation(s)
- Tianyi M Krupka
- Department of Radiology, Case Western Reserve University, Cleveland, Ohio 44106, USA
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30
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Meadowcroft MD, Zhang S, Liu W, Park BS, Connor JR, Collins CM, Smith MB, Yang QX. Direct magnetic resonance imaging of histological tissue samples at 3.0T. Magn Reson Med 2007; 57:835-41. [PMID: 17457873 PMCID: PMC4040526 DOI: 10.1002/mrm.21213] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Direct imaging of a histological slice is challenging. The vast difference in dimension between planar size and the thickness of histology slices would require an RF coil to produce a uniform RF magnetic (B1) field in a 2D plane with minimal thickness. In this work a novel RF coil designed specifically for imaging a histology slice was developed and tested. The experimental data demonstrate that the coil is highly sensitive and capable of producing a uniform B1 field distribution in a planar region of histological slides, allowing for the acquisition of high-resolution T2 images and T2 maps from a 60-microm-thick histological sample. The image intensity and T2 distributions were directly compared with histological staining of the relative iron concentration of the same slice. This work demonstrates the feasibility of using a microimaging histological coil to image thin slices of pathologically diseased tissue to obtain a precise one-to-one comparison between stained tissue and MR images.
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Affiliation(s)
- Mark D. Meadowcroft
- Center for NMR Research, Department of Radiology, Pennsylvania State University College of Medicine, Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
- Department of Neural Science and Behavioral Sciences, Pennsylvania State University College of Medicine, Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
- Department of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Shutong Zhang
- Department of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Wanzhan Liu
- Center for Magnetic Resonance Research, Department of Radiology, School of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Bu Sik Park
- Center for NMR Research, Department of Radiology, Pennsylvania State University College of Medicine, Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
| | - James R. Connor
- Department of Neurosurgery, Pennsylvania State University College of Medicine, Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
| | - Christopher M. Collins
- Center for NMR Research, Department of Radiology, Pennsylvania State University College of Medicine, Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
| | - Michael B. Smith
- Center for NMR Research, Department of Radiology, Pennsylvania State University College of Medicine, Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
| | - Qing X. Yang
- Center for NMR Research, Department of Radiology, Pennsylvania State University College of Medicine, Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
- Department of Neurosurgery, Pennsylvania State University College of Medicine, Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
- Correspondence to: Qing X. Yang, Ph.D., Center for NMR Research, Department of Radiology, M.S. Hershey Medical Center, 500 University Drive, Hershey, PA 17033.
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Budde MD, Kim JH, Liang HF, Schmidt RE, Russell JH, Cross AH, Song SK. Toward accurate diagnosis of white matter pathology using diffusion tensor imaging. Magn Reson Med 2007; 57:688-95. [PMID: 17390365 DOI: 10.1002/mrm.21200] [Citation(s) in RCA: 318] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Diffusion tensor imaging (DTI) has been widely applied to investigate injuries in the central nervous system (CNS) white matter (WM). However, the underlying pathological correlates of diffusion changes have not been adequately determined. In this study the coregistration of histological sections to MR images and a pixel-based receiver operating characteristic (ROC) analysis were used to compare the axial (lambda( parallel)) and radial (lambda( perpendicular)) diffusivities derived from DTI and histological markers of axon (phosphorylated neurofilament, SMI-31) and myelin (Luxol fast blue (LFB)) integrity, respectively, in two different patterns of injury to mouse spinal cord (SC) WM. In contusion SC injury (SCI), a decrease in lambda( parallel) matched the pattern of axonal damage with high accuracy, but lambda( perpendicular) did not match the pattern of demyelination detected by LFB. In a mouse model of multiple sclerosis (MS), lambda( perpendicular) and lambda( parallel) did not match the patterns of demyelination or axonal damage, respectively. However, a region of interest (ROI) analysis suggested that lambda( perpendicular)-detected demyelination paralleled that observed with LFB, and lambda( parallel) decreased in both regions of axonal damage and normal-appearing WM (NAWM) as visualized by SMI-31. The results suggest that directional diffusivities may reveal abnormalities that are not obvious with SMI-31 and LFB staining, depending on the type of injury.
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Affiliation(s)
- Matthew D Budde
- Department of Radiology, Washington University, St. Louis, Missouri, USA
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32
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Weinberg BD, Blanco E, Lempka SF, Anderson JM, Exner AA, Gao J. Combined radiofrequency ablation and doxorubicin-eluting polymer implants for liver cancer treatment. J Biomed Mater Res A 2007; 81:205-13. [PMID: 17120205 DOI: 10.1002/jbm.a.30926] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Previously, biodegradable polymer implants (polymer millirods) to release chemotherapeutic agents directly into tumors have been developed. The purpose of this study is to evaluate local drug distribution from these implants in liver tumors treated with radiofrequency (RF) ablation and determine if the implants provide a therapeutic improvement over RF ablation alone. Cylindrical implants were fabricated using 65% poly(D,L-lactide-co-glycolide) (PLGA), 21.5% NaCl, and 13.5% doxorubicin. Control or drug-containing millirods were implanted inside VX2 liver tumors (11 mm diameter) in rabbits after RF ablation. Therapeutic efficacy was assessed 4 and 8 days after treatment using tumor size, histology, and fluorescence measurement of drug distribution. Tumors in both test groups recurred at the boundary of the ablated region. Therapeutic doxorubicin concentrations were found in more than 80% of the ablated area, but concentrations declined rapidly at the boundary between normal and ablated tissue. This region was characterized by a developing fibrous capsule with resolving inflammation, which restricted drug transport out of the ablated zone. The intratumoral doxorubicin implants delivered high concentrations of drug within the ablated region but only limited amounts outside the ablation zone. Future studies will focus on overcoming the fibrotic transport barrier and enhancing drug delivery to the periphery of the ablation region to prevent tumor progression.
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Affiliation(s)
- Brent D Weinberg
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
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