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Han SH, Cho JH, Jung HS, Suh JY, Kim JK, Kim YR, Cho G, Cho H. Robust MR assessment of cerebral blood volume and mean vessel size using SPION-enhanced ultrashort echo acquisition. Neuroimage 2015; 112:382-389. [PMID: 25818683 DOI: 10.1016/j.neuroimage.2015.03.042] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 03/13/2015] [Accepted: 03/16/2015] [Indexed: 01/21/2023] Open
Abstract
Intravascular superparamagnetic iron oxide nanoparticles (SPION)-enhanced MR transverse relaxation rates (∆R2(⁎) and ∆R2) are widely used to investigate in vivo vascular parameters, such as the cerebral blood volume (CBV), microvascular volume (MVV), and mean vessel size index (mVSI, ∆R2(⁎)/∆R2). Although highly efficient, regional comparison of vascular parameters acquired using gradient-echo based ∆R2(⁎) is hampered by its high sensitivity to magnetic field perturbations arising from air-tissue interfaces and large vessels. To minimize such demerits, we took advantage of the dual contrast property of SPION and both theoretically and experimentally verified the direct benefit of replacing gradient-echo based ∆R2(⁎) measurement with ultra-short echo time (UTE)-based ∆R1 contrast to generate the robust CBV and mVSI maps. The UTE acquisition minimized the local measurement errors from susceptibility perturbations and enabled dose-independent CBV measurement using the vessel/tissue ∆R1 ratio, while independent spin-echo acquisition enabled simultaneous ∆R2 measurement and mVSI calculation of the cortex, cerebellum, and olfactory bulb, which are animal brain regions typified by significant susceptibility-associated measurement errors.
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Affiliation(s)
- S H Han
- Ulsan National Institute of Science and Technology, Ulsan, South Korea
| | - J H Cho
- Ulsan National Institute of Science and Technology, Ulsan, South Korea
| | - H S Jung
- Ulsan National Institute of Science and Technology, Ulsan, South Korea
| | - J Y Suh
- Korea Basic Science Institute, Ochang, South Korea
| | - J K Kim
- Asan Medical Center, Seoul, South Korea
| | - Y R Kim
- Martinos Center for Biomedical Imaging, Charlestown, MA, USA
| | - G Cho
- Korea Basic Science Institute, Ochang, South Korea
| | - H Cho
- Ulsan National Institute of Science and Technology, Ulsan, South Korea.
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Shen J, Li Y, Zhu Y, Yang X, Yao X, Li J, Huang G, Li C. Multifunctional gadolinium-labeled silica-coated Fe3O4 and CuInS2 nanoparticles as a platform for in vivo tri-modality magnetic resonance and fluorescence imaging. J Mater Chem B 2015; 3:2873-2882. [PMID: 32262416 DOI: 10.1039/c5tb00041f] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Gd-labeled, peptide-conjugated Fe3O4 NPs and fluorescent CuInS2 QDs were fabricated for imaging of pancreatic cancer.
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Affiliation(s)
- Jianhua Shen
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yunfeng Li
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yihua Zhu
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Xiaoling Yang
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Xiuzhong Yao
- Zhongshan Hospital of Fudan University
- Shanghai Medical College of Fudan University
- Shanghai 200032
- China
| | - Jun Li
- Zhongshan Hospital of Fudan University
- Shanghai Medical College of Fudan University
- Shanghai 200032
- China
| | - Guangjian Huang
- Department of Surgery
- Huashan Hospital
- Fudan University
- Shanghai 200040
- China
| | - Chunzhong Li
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
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Boxerman JL, Prah DE, Paulson ES, Machan JT, Bedekar D, Schmainda KM. The Role of preload and leakage correction in gadolinium-based cerebral blood volume estimation determined by comparison with MION as a criterion standard. AJNR Am J Neuroradiol 2012; 33:1081-7. [PMID: 22322605 DOI: 10.3174/ajnr.a2934] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Contrast extravasation in DSC-MRI potentiates inaccurate and imprecise estimates of glioma rCBV. We tested assertions that preload and postprocessing algorithms minimize this error by comparing Gd-rCBV using permutations of these 2 techniques with criterion standard rCBV using MION, an intravascular agent. MATERIALS AND METHODS We imaged 7 Fisher rats with 9L gliosarcomas, by using 3T gradient-echo DSC-MRI with MION (2.0 mg Fe/kg) and staged injection of Gd-diethylene triamine pentaacetic acid: a 0.1-mmol/kg bolus provided no preload (P-) data and served as preload (P+) for a subsequent 0.2-mmol/kg bolus. We computed MION-rCBV (steady-state ΔR2*, tumor versus normal brain) and Gd-rCBV ΔR2* [t] integration) without (C-) and with (C+) postprocessing correction, thereby testing 4 correction permutations: P-C-, P-C+, P+C-, and P+C+. We tested whether each permutation reduced bias and variance of the Gd/MION rCBV differences by using generalized estimating equations and Fmax statistics (P < .05 significant). RESULTS Gd-rCBV progressively better approximated MION-rCBV with increasing leakage correction. There was no statistically significant bias for the mean percentage deviation of Gd-rCBV from MION-rCBV for any correction permutation, but there was significantly reduced variance by using P+C- (22-fold), P-C+ (32-fold), and P+C+ (267-fold) compared with P-C-. P+C+ provided significant additional variance reduction compared with P+C- (12-fold) and P-C+ (8-fold). Linear regression of Gd-rCBV versus MION-rCBV revealed P+C+ to have the closest slope and intercept compared with the ideal, substantially better than P+C-. CONCLUSIONS Preload and postprocessing correction significantly reduced the variance of Gd-rCBV estimates, and bias reduction approached significance. Postprocessing correction provide significant benefit beyond preload alone.
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Affiliation(s)
- J L Boxerman
- Department of Diagnostic Imaging, Rhode Island Hospital, Providence, RI 02903, USA.
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Targeted dual-contrast T1- and T2-weighted magnetic resonance imaging of tumors using multifunctional gadolinium-labeled superparamagnetic iron oxide nanoparticles. Biomaterials 2011; 32:4584-93. [DOI: 10.1016/j.biomaterials.2011.03.018] [Citation(s) in RCA: 230] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2011] [Accepted: 03/06/2011] [Indexed: 11/18/2022]
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Antell H, Numminen J, Abo-Ramadan U, Niemelä MR, Hernesniemi JA, Kangasniemi M. Optimization of high-resolution USPIO magnetic resonance imaging at 4.7 T using novel phantom with minimal structural interference. J Magn Reson Imaging 2010; 32:1184-96. [DOI: 10.1002/jmri.22181] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Bae KH, Kim YB, Lee Y, Hwang J, Park H, Park TG. Bioinspired Synthesis and Characterization of Gadolinium-Labeled Magnetite Nanoparticles for Dual Contrast T1- and T2-Weighted Magnetic Resonance Imaging. Bioconjug Chem 2010; 21:505-12. [DOI: 10.1021/bc900424u] [Citation(s) in RCA: 167] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ki Hyun Bae
- Department of Biological Sciences and Graduate School of Nanoscience and Technology, and Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea
| | - Young Beom Kim
- Department of Biological Sciences and Graduate School of Nanoscience and Technology, and Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea
| | - Yuhan Lee
- Department of Biological Sciences and Graduate School of Nanoscience and Technology, and Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea
| | - JinYoung Hwang
- Department of Biological Sciences and Graduate School of Nanoscience and Technology, and Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea
| | - HyunWook Park
- Department of Biological Sciences and Graduate School of Nanoscience and Technology, and Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea
| | - Tae Gwan Park
- Department of Biological Sciences and Graduate School of Nanoscience and Technology, and Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea
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Rissanen TT, Korpisalo P, Markkanen JE, Liimatainen T, Ordén MR, Kholová I, de Goede A, Heikura T, Gröhn OH, Ylä-Herttuala S. Blood flow remodels growing vasculature during vascular endothelial growth factor gene therapy and determines between capillary arterialization and sprouting angiogenesis. Circulation 2005; 112:3937-46. [PMID: 16344386 DOI: 10.1161/circulationaha.105.543124] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND For clinically relevant proangiogenic therapy, it would be essential that the growth of the whole vascular tree is promoted. Vascular endothelial growth factor (VEGF) is well known to induce angiogenesis, but its capability to promote growth of larger vessels is controversial. We hypothesized that blood flow remodels vascular growth during VEGF gene therapy and may contribute to the growth of large vessels. METHODS AND RESULTS Adenoviral (Ad) VEGF or LacZ control gene transfer was performed in rabbit hindlimb semimembranous muscles with or without ligation of the profound femoral artery (PFA). Contrast-enhanced ultrasound and dynamic susceptibility contrast MRI demonstrated dramatic 23- to 27-fold increases in perfusion index and a strong decrease in peripheral resistance 6 days after AdVEGF gene transfer in normal muscles. Enlargement by 20-fold, increased pericyte coverage, and decreased alkaline phosphatase and dipeptidyl peptidase IV activities suggested the transformation of capillaries toward an arterial phenotype. Increase in muscle perfusion was attenuated, and blood vessel growth was more variable, showing more sprouting angiogenesis and formation of blood lacunae after AdVEGF gene transfer in muscles with ligated PFA than in normal muscles. Three-dimensional ultrasound reconstructions and histology showed that the whole vascular tree, including large arteries and veins, was enlarged manifold by AdVEGF. Blood flow was normalized and enlarged collaterals persisted in operated limbs 14 days after AdVEGF treatment. CONCLUSIONS This study shows that (1) blood flow modulates vessel growth during VEGF gene therapy and (2) VEGF overexpression promotes growth of arteries and veins and induces capillary arterialization leading to supraphysiological blood flow in target muscles.
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Affiliation(s)
- Tuomas T Rissanen
- Department of Biotechnology, A.I. Virtanen Institute, Kuopio University, Kuopio, Finland
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Wu EX, Tang H, Jensen JH. Applications of ultrasmall superparamagnetic iron oxide contrast agents in the MR study of animal models. NMR IN BIOMEDICINE 2004; 17:478-483. [PMID: 15526349 DOI: 10.1002/nbm.923] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Ultrasmall superparamagnetic iron oxide nanoparticles have been widely used during the past decade as MR intravascular contrast agents in the study of animal models. Such agents enhance both T1 and T2/T2* relaxation, although for animal studies it is the later type of enhancement that is most commonly exploited. Their strong microscopic intravascular susceptibility effect enables the local blood volume distribution to be mapped in various organs. High spatial resolution and sensitivity can be achieved, because the long half-life of these agents in blood, combined with anesthetization, permits steady-state measurements over extended periods. This capability has been utilized to study the cerebrovascular blood volume distributions and their changes in normal, activated, pathologic and pharmacologically or genetically modified states, particularly in rodent animal models. It has also been applied to study blood volume changes in other tissues, such as the myocardium. The relaxation rate shifts Delta R2 and Delta R2* induced by iron oxide agents may differ depending on certain morphological characteristics of the microvascular network, and sensitive Delta R2 and Delta R2* mapping can potentially provide, in addition to blood volume, measurement of other important microvascular parameters such as blood vessel density and size. This work aims to review the applications of ultrasmall superparamagnetic iron oxide contrast agents in MR animal studies, with an emphasis on the investigation of microvascular parameters.
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Affiliation(s)
- Ed X Wu
- Jockey Club MRI Engineering Center and Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong SAR, China.
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Abstract
Gliomas are characterized by very high levels of neo-vascularization holding out the hope that therapies aimed at angiogenesis will have a significant impact on this intractable family of tumors. Intense research into the molecular mechanisms that drive the formation of new blood vessels in response to tumor growth has revealed a great deal of complexity, at the heart of which are competing pro- and anti-angiogenic influences. The relevant signaling pathways, and how they might be manipulated to interfere in the promotion of vessel growth are discussed. Several types of anti-angiogenic lead compounds are already in clinical trials, but assessing their impact on brain tumors is not straightforward. We discuss in depth some of the practical aspects of using imaging to more meaningfully follow tumor progression and response to treatment, which is particularly relevant to the use of therapies that target blood flow directly, which is fundamental to modern imaging modalities.
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Affiliation(s)
- Oliver Bögler
- William and Karen Davidson Laboratory of Brain Tumor Biology, Hermelin Brain Tumor Center, Department of Neurosurgery, Henry Ford Hospital, Detroit, Michigan 48202, USA.
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Wu EX, Wong KK, Andrassy M, Tang H. High-resolution in vivo CBV mapping with MRI in wild-type mice. Magn Reson Med 2003; 49:765-70. [PMID: 12652549 DOI: 10.1002/mrm.10425] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
NMR microimaging has the potential to elucidate cerebrovascular abnormalities in mouse models. In this study, the relative regional cerebral blood volume (CBV) map is presented for C57BL6/J wild-type mice. The CBV mapping was based on changes in the steady-state NMR transverse relaxation rate (DeltaR(2)) associated with the presence of a superparamagnetic intravascular contrast agent (MION) with a long blood halflife. The experiments were performed at 9.4 T at a voxel size of 100 microm x 100 microm x 600 microm. Fine details, such as the hippocampal and olfactory bulb area, were visualized in the CBV map. The relative regional CBV values of various brain regions were measured. The DeltaR(2) dosage dependency and MION tissue clearance in mouse are also reported.
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Affiliation(s)
- Ed X Wu
- Department of Radiology, College of Physicians and Surgeons, Columbia University, 710 West 168th Street, Unit 63, New York, NY 10032, USA.
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