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Ronsivalle V, Leonardi R, Lagravere M, Flores-Mir C, Grippaudo C, Alessandri Bonetti G, Lo Giudice A. Medium-term effects of rapid maxillary expansion on nasal cavity and pharyngeal airway volumes considering age as a factor: A retrospective study. J Dent 2024; 144:104934. [PMID: 38461886 DOI: 10.1016/j.jdent.2024.104934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 03/06/2024] [Accepted: 03/07/2024] [Indexed: 03/12/2024] Open
Abstract
OBJECTIVES The medium-term effects of rapid maxillary expansion (RME) on nasal cavity (NC) and upper airway (UA) dimensions based on chronological age are still unclear. This retrospective study evaluated the medium-term changes occurring in the NC and pharyngeal airways (PA) after RME in two distinct age-based cohorts of patients. METHODS This retrospective study included 48 subjects who underwent RME grouped in two cohorts: a 6-9-year-old group (EEG group: early expansion group - 25 subjects) and an 11-14-year-old group (LEG group: late expansion group - 23 subjects). NC and PA volumes were analyzed from CBCT imaging segmentation before RME (T0) and twelve months after RME (T1). The amount of maxillary expansion (PW) and minimal cross-sectional area (CSmin) were also considered. RESULTS All PAs' volumetric sub-regions, CSmin and PW showed a significant volumetric increment (p < 0.05). Inter-group comparisons showed significant differences (p < 0.05) for nasopharynx and CSmin parameters (p < 0.05), while no significant changes were recorded for the other UA's sub-regions and PW (p > 0.05). According to a deviation analysis, part of the UA increase (more marked for the nasopharynx area) may have occurred due to reduced adenotonsillar tissues, which were larger in the EEG group. CONCLUSIONS Twelve months after treatment, clinicians should not expect changes in the UAs dimensions to be solely related to treatment effects of RME; instead, normal craniofacial growth changes and spontaneous regression of the adenotonsillar tissue could represent the most significant factors influencing UAs changes. CLINICAL SIGNIFICANCE From the clinical perspective, the results of the present study encourage caution when considering the therapeutic effects of RME on airways dimensions.
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Affiliation(s)
- Vincenzo Ronsivalle
- Department of General Surgery and Medical-Surgical Specialties, Section of Oral Surgery, University of Catania, Policlinico Universitario "Gaspare Rodolico - San Marco", Via Santa Sofia 78, 95123, Catania, Italy.
| | - Rosalia Leonardi
- Department of General Surgery and Medical-Surgical Specialties, Section of Orthodontics, University of Catania, Policlinico Universitario "Gaspare Rodolico - San Marco", Via Santa Sofia 78, 95123, Catania, Italy
| | - Manuel Lagravere
- Orthodontic Graduate Program, University of Alberta, Edmonton, Alberta, Canada
| | - Carlos Flores-Mir
- Orthodontic Graduate Program, University of Alberta, Edmonton, Alberta, Canada
| | - Cristina Grippaudo
- Orthodontic Graduate Program, University of Roma Cattolica - Sacro Cuore
| | | | - Antonino Lo Giudice
- Department of General Surgery and Medical-Surgical Specialties, Section of Orthodontics, University of Catania, Policlinico Universitario "Gaspare Rodolico - San Marco", Via Santa Sofia 78, 95123, Catania, Italy
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Liang Z, Wang Q, Xia C, Chen Z, Xu M, Liang G, Yu Zhang, Ye C, Zhang Y, Yu X, Wang H, Zheng H, Du J, Li Z, Tang J. From 2D to 3D: Automatic measurement of the Cobb angle in adolescent idiopathic scoliosis with the weight-bearing 3D imaging. Spine J 2024:S1529-9430(24)00159-1. [PMID: 38583576 DOI: 10.1016/j.spinee.2024.03.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 03/15/2024] [Accepted: 03/30/2024] [Indexed: 04/09/2024]
Abstract
BACKGROUND CONTEXT Adolescent idiopathic scoliosis (AIS) necessitates accurate spinal curvature assessment for effective clinical management. Traditional two-dimensional (2D) Cobb angle measurements have been the standard, but the emergence of three-dimensional (3D) automatic measurement techniques, such as those using weight-bearing 3D imaging (WR3D), presents an opportunity to enhance the accuracy and comprehensiveness of AIS evaluation. PURPOSE This study aimed to compare traditional 2D Cobb angle measurements with 3D automatic measurements utilizing the WR3D imaging technique in patients with AIS. STUDY DESIGN/SETTING A cohort of 53 AIS patients was recruited, encompassing 88 spinal curves, for comparative analysis. PATIENT SAMPLE The patient sample consisted of 53 individuals diagnosed with AIS. OUTCOME MEASURES Cobb angles were calculated using the conventional 2D method and three different 3D methods: the Analytical Method (AM), the Plane Intersecting Method (PIM), and the Plane Projection Method (PPM). METHODS The 2D cobb angle was manually measured by 3 experienced clinicians with 2D frontal whole-spine radiographs. For 3D cobb angle measurements, the spine and femoral heads were segmented from the WR3D images using a 3D-UNet deep-learning model, and the automatic calculations of the angles were performed with the 3D slicer software. RESULTS AM and PIM estimates were found to be significantly larger than 2D measurements. Conversely, PPM results showed no statistical difference compared to the 2D method. These findings were consistent in a subgroup analysis based on 2D Cobb angles. CONCLUSION Each 3D measurement method provides a unique assessment of spinal curvature, with PPM offering values closely resembling 2D measurements, while AM and PIM yield larger estimations. The utilization of WR3D technology alongside deep learning segmentation ensures accuracy and efficiency in comparative analyses. However, additional studies, particularly involving patients with severe curves, are required to validate and expand on these results. This study emphasizes the importance of selecting an appropriate measurement method considering the imaging modality and clinical context when assessing AIS, and it also underlines the need for continuous refinement of these techniques for optimal use in clinical decision-making and patient management.
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Affiliation(s)
- Zejun Liang
- Department of Radiology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Wuhou District, Chengdu, Sichuan, China
| | - Qian Wang
- Department of Rehabilitation Medicine Center, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Wuhou District, Chengdu, Sichuan, China
| | - Chunchao Xia
- Department of Radiology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Wuhou District, Chengdu, Sichuan, China
| | - Zengtong Chen
- Shenzhen Angell Technology Co., Ltd. TCL Industrial Park, No.1001 Zhongshanyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Miao Xu
- Basic Research Management Center, Sichuan Institute of Atomic Energy, No. 4128 Yiduxi Road, Longquanyi District, Chengdu, Sichuan, China
| | - Guilun Liang
- Sichuan-Chongqing Medical & Pharmaceutical Technology Transfer Platform, No.3 Keyuan South Street, Chengdu Hi-tech Industrial Development Zone, Chengdu, China
| | - Yu Zhang
- Department of Radiology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Wuhou District, Chengdu, Sichuan, China
| | - Chao Ye
- Shenzhen Angell Technology Co., Ltd. TCL Industrial Park, No.1001 Zhongshanyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Yiteng Zhang
- Department of Radiology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Wuhou District, Chengdu, Sichuan, China
| | - Xiaocheng Yu
- Shenzhen Angell Technology Co., Ltd. TCL Industrial Park, No.1001 Zhongshanyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Hairong Wang
- Department of Radiology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Wuhou District, Chengdu, Sichuan, China
| | - Han Zheng
- Shenzhen Angell Technology Co., Ltd. TCL Industrial Park, No.1001 Zhongshanyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Jing Du
- Shenzhen Angell Technology Co., Ltd. TCL Industrial Park, No.1001 Zhongshanyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Zhenlin Li
- Department of Radiology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Wuhou District, Chengdu, Sichuan, China
| | - Jing Tang
- Department of Radiology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Wuhou District, Chengdu, Sichuan, China.
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Walsh CL, Berg M, West H, Holroyd NA, Walker-Samuel S, Shipley RJ. Reconstructing microvascular network skeletons from 3D images: What is the ground truth? Comput Biol Med 2024; 171:108140. [PMID: 38422956 DOI: 10.1016/j.compbiomed.2024.108140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 01/29/2024] [Accepted: 02/12/2024] [Indexed: 03/02/2024]
Abstract
Structural changes to microvascular networks are increasingly highlighted as markers of pathogenesis in a wide range of disease, e.g. Alzheimer's disease, vascular dementia and tumour growth. This has motivated the development of dedicated 3D imaging techniques, alongside the creation of computational modelling frameworks capable of using 3D reconstructed networks to simulate functional behaviours such as blood flow or transport processes. Extraction of 3D networks from imaging data broadly consists of two image processing steps: segmentation followed by skeletonisation. Much research effort has been devoted to segmentation field, and there are standard and widely-applied methodologies for creating and assessing gold standards or ground truths produced by manual annotation or automated algorithms. The Skeletonisation field, however, lacks widely applied, simple to compute metrics for the validation or optimisation of the numerous algorithms that exist to extract skeletons from binary images. This is particularly problematic as 3D imaging datasets increase in size and visual inspection becomes an insufficient validation approach. In this work, we first demonstrate the extent of the problem by applying 4 widely-used skeletonisation algorithms to 3 different imaging datasets. In doing so we show significant variability between reconstructed skeletons of the same segmented imaging dataset. Moreover, we show that such a structural variability propagates to simulated metrics such as blood flow. To mitigate this variability we introduce a new, fast and easy to compute super metric that compares the volume, connectivity, medialness, bifurcation point identification and homology of the reconstructed skeletons to the original segmented data. We then show that such a metric can be used to select the best performing skeletonisation algorithm for a given dataset, as well as to optimise its parameters. Finally, we demonstrate that the super metric can also be used to quickly identify how a particular skeletonisation algorithm could be improved, becoming a powerful tool in understanding the complex implication of small structural changes in a network.
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Affiliation(s)
- Claire L Walsh
- Department of Mechanical Engineering, University College London, United Kingdom
| | - Maxime Berg
- Department of Mechanical Engineering, University College London, United Kingdom.
| | - Hannah West
- Department of Mechanical Engineering, University College London, United Kingdom
| | - Natalie A Holroyd
- Centre for Computational Medicine, Division of Medicine, University College London, United Kingdom
| | - Simon Walker-Samuel
- Centre for Computational Medicine, Division of Medicine, University College London, United Kingdom
| | - Rebecca J Shipley
- Department of Mechanical Engineering, University College London, United Kingdom; Centre for Computational Medicine, Division of Medicine, University College London, United Kingdom
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Sheng H, Huang M, Li H, Sun L, Feng S, Du X, Wang Y, Tong X, Feng Y, Chen J, Li Y. Three-Dimensional Imaging and Quantitative Analysis of Blood Vessel Distribution in The Meniscus of Transgenic Mouse after Tissue Clearing. Cell J 2023; 25:570-578. [PMID: 37641419 PMCID: PMC10542206 DOI: 10.22074/cellj.2023.1988973.1220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 05/01/2023] [Accepted: 05/08/2023] [Indexed: 08/31/2023]
Abstract
OBJECTIVE Blood supply to the meniscus determines its recovery and is a reference for treatment planning. This study aimed to apply tissue clearing and three-dimensional (3D) imaging in exploring the quantitative distribution of blood vessels in the mouse meniscus. MATERIALS AND METHODS In this experimental study, tissue clearing was performed to treat the bilateral knee joints of transgenic mice with fluorescent vascular endothelial cells. Images were acquired using a light sheet microscope and the vascular endothelial cells in the meniscus was analysed using 3D imaging. Quantitative methods were employed to further analyse the blood vessel distribution in the mouse meniscus. RESULTS The traditional three-equal-width division of the meniscus is as follows: the outer one-third is the red-red zone (RR), the inner one-third is the white-white zone (WW), and the transition area is the red-white zone (RW). The division revealed significant signal differences between the RW and WW (P<0.05) zones, but no significant differences between the RR and RW zones, which indicated that the division might not accurately reflect the blood supply of the meniscus. According to the modified division (4:2:1) in which significant differences were ensured between the adjacent zones, we observed that the width ratio of each zone was 38 ± 1% (RR), 24 ± 1% (RW), and 38 ± 2% (WW). Furthermore, the blood supply to each region was verified. The anterior region had the most abundant blood supply. The fluorescence count in the anterior region was significantly higher than in the central and posterior regions (P<0.05). The blood supply of the medial meniscus was superior to the lateral meniscus (P<0.05). CONCLUSION Analysis of the blood supply to the mouse meniscus under tissue clearing and 3D imaging reflect quantitative blood vessel distribution, which would facilitate future evaluations of the human meniscus and provide more anatomical references for clinicians.
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Affiliation(s)
- Huaixuan Sheng
- Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Mingru Huang
- Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Huizhu Li
- Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Luyi Sun
- Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Sijia Feng
- Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiner Du
- Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Yicong Wang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Institutes of Brain Science, Brain Science Collaborative Innovation Centre, State Key Laboratory of Medical Neurobiology, Institute of Acupuncture and Moxibustion, Fudan Institutes of Integrative Medicine, Fudan University, Shanghai, China
- China Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, Shanghai, China
| | - Xiaoyu Tong
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Institutes of Brain Science, Brain Science Collaborative Innovation Centre, State Key Laboratory of Medical Neurobiology, Institute of Acupuncture and Moxibustion, Fudan Institutes of Integrative Medicine, Fudan University, Shanghai, China
- China Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, Shanghai, China
| | - Yi Feng
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Institutes of Brain Science, Brain Science Collaborative Innovation Centre, State Key Laboratory of Medical Neurobiology, Institute of Acupuncture and Moxibustion, Fudan Institutes of Integrative Medicine, Fudan University, Shanghai, China
- China Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, Shanghai, China
| | - Jun Chen
- Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, China.
| | - Yunxia Li
- Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, China.
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McCarty SM, Clasby MC, Sexton JZ. Automated High-Throughput, High-Content 3D Imaging of Intact Pancreatic Islets. SLAS Discov 2023:S2472-5552(23)00052-7. [PMID: 37527729 DOI: 10.1016/j.slasd.2023.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/24/2023] [Accepted: 07/26/2023] [Indexed: 08/03/2023]
Abstract
Diabetes poses a global health crisis affecting individuals across age groups and backgrounds, with a prevalence estimate of 700 million people worldwide by 2045. Current therapeutic strategies primarily rely on insulin therapy or hypoglycemic agents, which fail to address the root cause of the disease - the loss of pancreatic insulin-producing beta-cells. Therefore, bioassays that recapitulate intact islets are needed to enable drug discovery for beta-cell replenishment, protection from beta-cell loss, and islet-cell interactions. Standard cancer insulinoma beta-cell lines MIN6 and INS-1 have been used to interrogate beta-cell metabolic pathways and function but are not suitable for studying proliferative effects. Screening using primary human/rodent intact islets offers a higher level of physiological relevance to enhance diabetes drug discovery and development. However, the 3-dimensionality of intact islets have presented challenges in developing robust, high-throughput assays to detect beta-cell proliferative effects. Established methods rely on either dissociated islet cells plated in 2D monolayer cultures for imaging or reconstituted pseudo-islets formed in round bottom plates to achieve homogeneity. These approaches have significant limitations due to the islet cell dispersion process. To address these limitations, we have developed a robust, intact ex vivo pancreatic islet bioassay in 384-well format that is capable of detecting diabetes-relevant endpoints including beta-cell proliferation, chemoprotection, and islet spatial morphometrics.
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Affiliation(s)
- Sean M McCarty
- Department of Medicinal Chemistry, College of Pharmacy, Ann Arbor, MI, USA; Department of Internal Medicine, Gastroenterology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Martin C Clasby
- Department of Internal Medicine, Gastroenterology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Jonathan Z Sexton
- Department of Medicinal Chemistry, College of Pharmacy, Ann Arbor, MI, USA; Department of Internal Medicine, Gastroenterology, University of Michigan Medical School, Ann Arbor, MI, USA; University of Michigan Center for Drug Repurposing, Ann Arbor, MI, USA
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Petitpas L. 3D imaging in dentofacial orthopedics: the essential multifunctional tool. Orthod Fr 2023; 94:35-53. [PMID: 37114818 DOI: 10.1684/orthodfr.2023.111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
Introduction Digital technology has invaded all the fields of activity of our modern society, including our practice, with the possibility to perform 3D imaging, mainly by the intraoral 3D scan camera which allows to digitize the dental arches, but also by the cone beam which allows to virtualize the patient's skull, in whole or in part. Material and Method In this article, we will present the complete file of a patient suffering from a temporomandibular dysfunction, for which a 3D reconstruction technique easily usable today has been used. Discussion The reconstructed 3D images are of great importance for the diagnosis, but also for the therapeutic planning and its follow-up. The examination time is short and the X-ray dose inflicted on the patient is lower than with conventional CT and approaches the dose emitted for a teleradiographic cephalometric examination with the use of Ultra Low Dose technology. Conclusion This 3D technique can therefore be considered as the imaging technique to be favored when the investigation of bony changes of the temporomandibular joint is to be recorded, even if this examination is not for the moment a first-line examination. However, it will only be one of the decision support tools and will not be able to replace the treatment prescription.
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Hong S, Choi WS, Purushothaman B, Koh J, Kim HC, Chung JW, Song JM, Choi JW. Drug delivery in transarterial chemoembolization of hepatocellular carcinoma: Ex vivo evaluation using transparent tissue imaging. Acta Biomater 2022; 154:523-535. [PMID: 36374750 DOI: 10.1016/j.actbio.2022.10.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 09/20/2022] [Accepted: 10/20/2022] [Indexed: 01/27/2023]
Abstract
In this study, we elucidated for the first time the role of anti-cancer drugs in transarterial chemoembolization (TACE) via direct visualization of the spatial distribution of drugs with respect to blood vessels in intact transparent hepatocellular carcinoma (HCC) tissues. To date, precise estimation of drug penetration into tumors using thin 3D tissue sections has been challenging. This study utilized the tissue optical clearing technique to resolve the lack of tissue clarity, thereby enabling deep tissue imaging for the quantitative assessment of drug delivery following TACE. We compared the drug delivery effect, time-dependent embolic effect, and immunogenic response following conventional TACE (cTACE), drug-eluting embolic TACE (DEE-TACE), and transarterial embolization (TAE) in a rat model of HCC. After each treatment, three-dimensional drug delivery was quantitatively evaluated via the transparent liver tumor imaging, and time-dependent tumor necrosis was analyzed by serial tumor harvesting and histological staining. The results showed that chemotherapeutic agents travel only short distances after cTACE (∼80µm) and DEE-TACE (∼110µm), whereas necrosis occurs extensively within 24 h of treatment (85.3-97.2% of tumor cells). In addition, the percentages of CD4 and IL-17+ CD4 T cells increased significantly following treatment; however, drug-loading did not appear to affect the immune response following TACE. In conclusion, transarterially delivered chemotherapeutic agents appeared to exert a limited role, owing to the rapid and overwhelming effect of embolization. STATEMENT OF SIGNIFICANCE: TACE has been widely used for the treatment of HCC, especially for unresectable intermediate and advanced HCCs. Drug use in TACE is expected to provide patients with synergistic therapeutic benefits with the effect of embolic agents; however, the role of chemotherapeutic agents in TACE remains controversial. This study quantitatively verified that chemotherapeutic agents travel only short distances after TACE, while necrosis occurs extensively within 24h, and drug loading does not significantly affect immune responses following TACE. Three-dimensional imaging of intact transparent HCC can contribute to a better understanding of drug delivery mechanisms associated with TACE and also reveal that drug use in TACE may need to be reconsidered and limited to situations when embolization is expected to be insufficient.
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Affiliation(s)
- Sera Hong
- Department of Pharmacy, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Won Seok Choi
- Department of Radiology, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Baskaran Purushothaman
- Department of Pharmacy, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Jaemoon Koh
- Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Hyo-Cheol Kim
- Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Jin Wook Chung
- Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Joon Myong Song
- Department of Pharmacy, College of Pharmacy, Seoul National University, Seoul, South Korea.
| | - Jin Woo Choi
- Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea.
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Errickson D, Carew RM, Collings AJ, Biggs MJP, Haig P, O'Hora H, Marsh N, Roberts J. A survey of case studies on the use of forensic three-dimensional printing in England and Wales. Int J Legal Med 2022; 136:1605-1619. [PMID: 35939108 PMCID: PMC9576664 DOI: 10.1007/s00414-022-02872-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 08/02/2022] [Indexed: 11/23/2022]
Abstract
3D printing has rapidly developed and been applied in forensic science due to its use in creating demonstrations for courts of law. Much of the literature on this specific topic has focused on the use of 3D printed models in academia, the potential influence on a jury, and its use as a long-term documentation process, but with few actual forensic case examples. This paper offers an insight into the development of 3D printing in forensic practice and how 3D printing is currently being used in the criminal justice system in England and Wales. A series of case reports were gathered from multiple police forces and forensic practitioners in the UK to identify how 3D printing was being used. These discussions established who was requesting 3D printed exhibits, what type of technologies were being utilised, what type of exhibits were being printed, and resulting feedback for the use of 3D printed material within a criminal case. As a result, this research demonstrates the current use of 3D printing in England and Wales, discussing the associated cases that have been known to incorporate 3D prints. Likewise, this work explores the limitations that have been encountered by forensic practitioners and identifies a series of research questions that should be considered in future investigations.
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Affiliation(s)
- D Errickson
- Cranfield Forensic Institute, Cranfield University, College Road, Bedford, MK43 0AL, UK.
| | - R M Carew
- School of Life Sciences, Coventry University, Priory Street, Coventry, CV1 5FB, UK
| | - A J Collings
- School of Chemical and Physical Sciences, Keele University, Stafordshire, ST5 5BG, UK
| | - M J P Biggs
- East Midlands Forensic Pathology Unit, University of Leicester, Robert Kilpatrick Building, Leicester, LE2 7LX, UK
| | - P Haig
- South West Forensics Imaging Hub, Police HQ, Exeter, Middlemoor, UK
| | - H O'Hora
- South West Forensics Imaging Hub, Police HQ, Exeter, Middlemoor, UK
| | - N Marsh
- Metropolitan Police, 109 Lambeth Road, London, SE1 7LP, UK
| | - J Roberts
- School of Biological and Environmental Sciences, Liverpool John Moores University, Exchange Station, Liverpool, L2 2QP, UK
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Nojima S, Ishida S, Terayama K, Matsumoto K, Matsui T, Tahara S, Ohshima K, Kiyokawa H, Kido K, Ukon K, Yoshida SY, Mitani TT, Doki Y, Mizushima T, Okuno Y, Susaki EA, Ueda HR, Morii E. A Novel Three-Dimensional Imaging System Based on Polysaccharide Staining for Accurate Histopathological Diagnosis of Inflammatory Bowel Diseases. Cell Mol Gastroenterol Hepatol 2022; 14:905-24. [PMID: 35835392 DOI: 10.1016/j.jcmgh.2022.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 07/04/2022] [Accepted: 07/05/2022] [Indexed: 12/10/2022]
Abstract
BACKGROUND & AIMS Tissue-clearing and three-dimensional (3D) imaging techniques aid clinical histopathological evaluation; however, further methodological developments are required before use in clinical practice. METHODS We sought to develop a novel fluorescence staining method based on the classical periodic acid-Schiff stain. We further attempted to develop a 3D imaging system based on this staining method and evaluated whether the system can be used for quantitative 3D pathological evaluation and deep learning-based automatic diagnosis of inflammatory bowel diseases. RESULTS We successfully developed a novel periodic acid-FAM hydrazide (PAFhy) staining method for 3D imaging when combined with a tissue-clearing technique (PAFhy-3D). This strategy enabled clear and detailed imaging of the 3D architectures of crypts in human colorectal mucosa. PAFhy-3D imaging also revealed abnormal architectural changes in crypts in ulcerative colitis tissues and identified the distributions of neutrophils in cryptitis and crypt abscesses. PAFhy-3D revealed novel pathological findings including spiral staircase-like crypts specific to inflammatory bowel diseases. Quantitative analysis of crypts based on 3D morphologic changes enabled differential diagnosis of ulcerative colitis, Crohn's disease, and non-inflammatory bowel disease; such discrimination could not be achieved by pathologists. Furthermore, a deep learning-based system using PAFhy-3D images was used to distinguish these diseases The accuracies were excellent (macro-average area under the curve = 0.94; F1 scores = 0.875 for ulcerative colitis, 0.717 for Crohn's disease, and 0.819 for non-inflammatory bowel disease). CONCLUSIONS PAFhy staining and PAFhy-3D imaging are promising approaches for next-generation experimental and clinical histopathology.
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Zeng D, Li M, Jiang N, Ju Y, Schreiber H, Chambers E, Letscher D, Ju T, Topp CN. TopoRoot: a method for computing hierarchy and fine-grained traits of maize roots from 3D imaging. Plant Methods 2021; 17:127. [PMID: 34903248 PMCID: PMC8667396 DOI: 10.1186/s13007-021-00829-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 11/30/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND 3D imaging, such as X-ray CT and MRI, has been widely deployed to study plant root structures. Many computational tools exist to extract coarse-grained features from 3D root images, such as total volume, root number and total root length. However, methods that can accurately and efficiently compute fine-grained root traits, such as root number and geometry at each hierarchy level, are still lacking. These traits would allow biologists to gain deeper insights into the root system architecture. RESULTS We present TopoRoot, a high-throughput computational method that computes fine-grained architectural traits from 3D images of maize root crowns or root systems. These traits include the number, length, thickness, angle, tortuosity, and number of children for the roots at each level of the hierarchy. TopoRoot combines state-of-the-art algorithms in computer graphics, such as topological simplification and geometric skeletonization, with customized heuristics for robustly obtaining the branching structure and hierarchical information. TopoRoot is validated on both CT scans of excavated field-grown root crowns and simulated images of root systems, and in both cases, it was shown to improve the accuracy of traits over existing methods. TopoRoot runs within a few minutes on a desktop workstation for images at the resolution range of 400^3, with minimal need for human intervention in the form of setting three intensity thresholds per image. CONCLUSIONS TopoRoot improves the state-of-the-art methods in obtaining more accurate and comprehensive fine-grained traits of maize roots from 3D imaging. The automation and efficiency make TopoRoot suitable for batch processing on large numbers of root images. Our method is thus useful for phenomic studies aimed at finding the genetic basis behind root system architecture and the subsequent development of more productive crops.
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Affiliation(s)
- Dan Zeng
- Department of Computer Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA.
| | - Mao Li
- Donald Danforth Plant Science Center, Saint Louis, MO, 63132, USA
| | - Ni Jiang
- Donald Danforth Plant Science Center, Saint Louis, MO, 63132, USA
| | - Yiwen Ju
- Department of Computer Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Hannah Schreiber
- Department of Computer Science, Saint Louis University, Saint Louis, MO, 63103, USA
| | - Erin Chambers
- Department of Computer Science, Saint Louis University, Saint Louis, MO, 63103, USA
| | - David Letscher
- Department of Computer Science, Saint Louis University, Saint Louis, MO, 63103, USA
| | - Tao Ju
- Department of Computer Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
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11
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Choppin S, Clarkson S, Bullas A, Thelwell M, Heller B, Wheat J. Anatomical and principal axes are not aligned in the torso: Considerations for users of geometric modelling methods. J Biomech 2021; 114:110151. [PMID: 33307355 DOI: 10.1016/j.jbiomech.2020.110151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 10/28/2020] [Accepted: 11/23/2020] [Indexed: 11/21/2022]
Abstract
The accuracy and accessibility of methods to calculate body segment inertial parameters are a key concern for many researchers. It has recently been demonstrated that the magnitude and orientation of principal moments of inertia are crucial for accurate dynamic models. This is important to consider given that the orientation of principal axes is fixed for the majority of geometric and regression body models. This paper quantifies the effect of subject specific geometry on the magnitude and orientation of second moments of volume in the trunk segment. The torsos of 40 male participants were scanned using a 3D imaging system and the magnitude and orientation of principal moments of volume were calculated from the resulting geometry. Principal axes are not aligned with the segment co-ordinate system in the torso segment, with mean Euler angles of 11.7, 1.9 and 10.3 in the ZXY convention. Researchers using anatomical modelling techniques should try and account for subject specific geometry and the mis-alignment of principal axes. This will help to reduce errors in simulation by mitigating the effect of errors in magnitude of principal moments.
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Kim JJ, Nam H, Kaipatur NR, Major PW, Flores-Mir C, Lagravere MO, Romanyk DL. Reliability and accuracy of segmentation of mandibular condyles from different three-dimensional imaging modalities: a systematic review. Dentomaxillofac Radiol 2019; 49:20190150. [PMID: 31778321 DOI: 10.1259/dmfr.20190150] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
OBJECTIVE To critically synthesize the literature surrounding segmentation of the mandibular condyle using three-dimensional imaging modalities. Specifically, analyzing the reliability and accuracy of methods used for three-dimensional condyle segmentation. METHODS Three electronic databases were searched for studies reporting the reliability and accuracy of various methods used to segment mandibular condyles from three-dimensional imaging modalities. Two authors independently reviewed articles for eligibility and data extraction. RESULTS Nine studies fulfilled the inclusion criteria. Eight studies assessed the condylar segmentation from CBCT images and limited studies were available on non-CBCT three-dimensional imaging modalities. Threshold-based volume segmentation, manual segmentation, and semi-automatic segmentation techniques were presented. Threshold-based volume segmentation reported higher accuracy when completed by an experienced technician compared to clinicians. Adequate reliability and accuracy were observed in manual segmentation. Although adequate reliability was reported in semi-automatic segmentation, data on its accuracy were lacking. CONCLUSION A definitive conclusion with regards to which current technique is most reliable and accurate to efficiently segment the mandibular condyle cannot be made with the currently available evidence. This is especially true in terms of non-CBCT imaging modalities with very limited literature available.
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Affiliation(s)
- Justin J Kim
- 1Department of Orthodontics, School of Dentistry, University of Alberta, Edmonton Clinic Health Academy, 5th floor, 11405-87 Avenue NW, Edmonton, Alberta, Canada
| | - Hyejin Nam
- Department of Orthodontics, School of Dentistry, University of Alberta, Edmonton Clinic Health Academy, 5th floor, 11405-87 Avenue NW, Edmonton, Alberta, Canada
| | - Neelambar R Kaipatur
- Department of Orthodontics, School of Dentistry, University of Alberta, Edmonton Clinic Health Academy, 5th floor, 11405-87 Avenue NW, Edmonton, Alberta, Canada
| | - Paul W Major
- Department of Orthodontics, School of Dentistry, University of Alberta, Edmonton Clinic Health Academy, 5th floor, 11405-87 Avenue NW, Edmonton, Alberta, Canada
| | - Carlos Flores-Mir
- Department of Orthodontics, School of Dentistry, University of Alberta, Edmonton Clinic Health Academy, 5th floor, 11405-87 Avenue NW, Edmonton, Alberta, Canada
| | - Manuel O Lagravere
- Department of Orthodontics, School of Dentistry, University of Alberta, Edmonton Clinic Health Academy, 5th floor, 11405-87 Avenue NW, Edmonton, Alberta, Canada
| | - Daniel L Romanyk
- Department of Orthodontics, School of Dentistry, University of Alberta, Edmonton Clinic Health Academy, 5th floor, 11405-87 Avenue NW, Edmonton, Alberta, Canada
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Martín-Casado L, Barquín C. [Does a Physical Education lesson affect the foot morphology in school-aged children?]. Bol Med Hosp Infant Mex 2018; 74:357-363. [PMID: 29382479 DOI: 10.1016/j.bmhimx.2017.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 04/12/2017] [Accepted: 05/11/2017] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND To analyze the changes in foot morphology in school-age children, after a Physical Education lesson. METHODS A total of 10 school-age children (5 girls and 5 boys) were recruited with a mean age of 9.3 ± 0.5 years that voluntary participated in this study. Measurements of both feet were obtained using a 3D foot digitizer model IFU-S-01 (Japan) in two different moments, before and after a physical education lesson (per-exercise and post-exercise), where different activities involving displacements, jumps and landings were performed. RESULTS By comparing foot morphology before and after exercise, significant differences in the arch height were found, which increased after exercise (p<0.05). The ball width shows greater changes after exercise but without significant differences (p= 0.07; effect size [ES] = 0.2). Furthermore, a positive correlation between the ball width and the arch height (p<0.05) and negative correlation between the distance from the heel to the first metatarsal and the ball width (r = - 0.7; p<0.05), were observed. CONCLUSIONS The type of activities undertaken during physical education lesson (displacements, jumps and landings) increased the pressure on the forefoot, which would lead to a lager arch height. Development of children's sport footwear systems should take into account the foot lengths, widths and heights, for a better fit, preventing future musculoskeletal injuries.
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Affiliation(s)
- Laura Martín-Casado
- Facultad de Ciencias Humanas y de la Educación, Universidad Técnica de Ambato, Ambato, Ecuador.
| | - Christian Barquín
- Facultad de Ciencias Humanas y de la Educación, Universidad Técnica de Ambato, Ambato, Ecuador
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Deferm JT, Schreurs R, Baan F, Bruggink R, Merkx MAW, Xi T, Bergé SJ, Maal TJJ. Validation of 3D documentation of palatal soft tissue shape, color, and irregularity with intraoral scanning. Clin Oral Investig 2017; 22:1303-1309. [PMID: 28983706 PMCID: PMC5866839 DOI: 10.1007/s00784-017-2198-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 08/28/2017] [Indexed: 12/01/2022]
Abstract
Objectives The purpose of this study was to assess the feasibility of 3D intraoral scanning for documentation of palatal soft tissue by evaluating the accuracy of shape, color, and curvature. Materials and methods Intraoral scans of ten participants’ upper dentition and palate were acquired with the TRIOS® 3D intraoral scanner by two observers. Conventional impressions were taken and digitized as a gold standard. The resulting surface models were aligned using an Iterative Closest Point approach. The absolute distance measurements between the intraoral models and the digitized impression were used to quantify the trueness and precision of intraoral scanning. The mean color of the palatal soft tissue was extracted in HSV (hue, saturation, value) format to establish the color precision. Finally, the mean curvature of the surface models was calculated and used for surface irregularity. Results Mean average distance error between the conventional impression models and the intraoral models was 0.02 ± 0.07 mm (p = 0.30). Mean interobserver color difference was − 0.08 ± 1.49° (p = 0.864), 0.28 ± 0.78% (p = 0.286), and 0.30 ± 1.14% (p = 0.426) for respectively hue, saturation, and value. The interobserver differences for overall and maximum surface irregularity were 0.01 ± 0.03 and 0.00 ± 0.05 mm. Conclusions This study supports the hypothesis that the intraoral scan can perform a 3D documentation of palatal soft tissue in terms of shape, color, and curvature. Clinical relevance An intraoral scanner can be an objective tool, adjunctive to the clinical examination of the palatal tissue.
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Affiliation(s)
- Julie T Deferm
- Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, P.O. Box 9101, 6500, HB, Nijmegen, Postal number 590, the Netherlands.
| | - Ruud Schreurs
- Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, P.O. Box 9101, 6500, HB, Nijmegen, Postal number 590, the Netherlands.,Department of Oral and Maxillofacial Surgery, Academic Medical Centre of Amsterdam (AMC), Academic Centre for Dentistry (ACTA), Amsterdam, the Netherlands
| | - Frank Baan
- Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, P.O. Box 9101, 6500, HB, Nijmegen, Postal number 590, the Netherlands.,Department of Orthodontics and Craniofacial biology, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands
| | - Robin Bruggink
- Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, P.O. Box 9101, 6500, HB, Nijmegen, Postal number 590, the Netherlands.,Department of Orthodontics and Craniofacial biology, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands
| | - Matthijs A W Merkx
- Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, P.O. Box 9101, 6500, HB, Nijmegen, Postal number 590, the Netherlands
| | - Tong Xi
- Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, P.O. Box 9101, 6500, HB, Nijmegen, Postal number 590, the Netherlands
| | - Stefaan J Bergé
- Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, P.O. Box 9101, 6500, HB, Nijmegen, Postal number 590, the Netherlands
| | - Thomas J J Maal
- Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, P.O. Box 9101, 6500, HB, Nijmegen, Postal number 590, the Netherlands.,Department of Oral and Maxillofacial Surgery, Academic Medical Centre of Amsterdam (AMC), Academic Centre for Dentistry (ACTA), Amsterdam, the Netherlands
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15
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Hu J, Rivero F, Torres RA, Loro Ramírez H, Rodríguez EM, Alfonso F, García Solé J, Jaque D. Dynamic single gold nanoparticle visualization by clinical intracoronary optical coherence tomography. J Biophotonics 2017; 10:674-682. [PMID: 27273138 DOI: 10.1002/jbio.201600062] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 04/21/2016] [Accepted: 05/23/2016] [Indexed: 05/14/2023]
Abstract
The potential use of Gold Nanoparticles (GNPs) as contrast agents for clinical intracoronary frequency domain Optical Coherence Tomography (OCT) is here explored. The OCT contrast enhancement caused by GNPs of different sizes and morphologies has been systematically investigated and correlated with their optical properties. Among the different GNPs commercially available with plasmon resonances close to the operating wavelength of intracoronary OCT (1.3 µm), Gold Nanoshells (GNSs) have provided the best OCT contrast due to their largest scattering cross section at this wavelength. Clinical intracoronary OCT catheters are here demonstrated to be capable of three dimensional visualization and real-time tracking of individual GNSs. Results here included open an avenue to novel application of intravascular clinical OCT in combination with GNPs, such as real time evaluation of intravascular obstructions or pressure gradients.
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Affiliation(s)
- Jie Hu
- Fluorescence Imaging Group, Departamento de Física de Materiales, Instituto Nicolás Cabrera, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049, Madrid, Spain
| | - Fernando Rivero
- Cardiology Department, Hospital Universitario de la Princesa, IIS-IP, Universidad Autónoma de Madrid, Madrid
| | - Rio Aguilar Torres
- Cardiology Department, Hospital Universitario de la Princesa, IIS-IP, Universidad Autónoma de Madrid, Madrid
| | - Héctor Loro Ramírez
- Facultad de Ciencias, Universidad Nacional de Ingeniería, P.O. Box 31-139, Lima, Perú
| | - Emma Martín Rodríguez
- Fluorescence Imaging Group, Departamento de Física de Materiales, Instituto Nicolás Cabrera, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049, Madrid, Spain
- Instituto Ramón y Cajal de Investigación Sanitaria, Hospital Ramón y Cajal, 28034, Madrid, Spain
| | - Fernando Alfonso
- Cardiology Department, Hospital Universitario de la Princesa, IIS-IP, Universidad Autónoma de Madrid, Madrid
| | - José García Solé
- Fluorescence Imaging Group, Departamento de Física de Materiales, Instituto Nicolás Cabrera, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049, Madrid, Spain
| | - Daniel Jaque
- Fluorescence Imaging Group, Departamento de Física de Materiales, Instituto Nicolás Cabrera, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049, Madrid, Spain
- Instituto Ramón y Cajal de Investigación Sanitaria, Hospital Ramón y Cajal, 28034, Madrid, Spain
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16
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Flores RL, Liss H, Raffaelli S, Humayun A, Khouri KS, Coelho PG, Witek L. The technique for 3D printing patient-specific models for auricular reconstruction. J Craniomaxillofac Surg 2017; 45:937-943. [PMID: 28465028 DOI: 10.1016/j.jcms.2017.03.022] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 03/02/2017] [Accepted: 03/27/2017] [Indexed: 01/17/2023] Open
Abstract
PURPOSE Currently, surgeons approach autogenous microtia repair by creating a two-dimensional (2D) tracing of the unaffected ear to approximate a three-dimensional (3D) construct, a difficult process. To address these shortcomings, this study introduces the fabrication of patient-specific, sterilizable 3D printed auricular model for autogenous auricular reconstruction. METHODS A high-resolution 3D digital photograph was captured of the patient's unaffected ear and surrounding anatomic structures. The photographs were exported and uploaded into Amira, for transformation into a digital (.stl) model, which was imported into Blender, an open source software platform for digital modification of data. The unaffected auricle as digitally isolated and inverted to render a model for the contralateral side. The depths of the scapha, triangular fossa, and cymba were deepened to accentuate their contours. Extra relief was added to the helical root to further distinguish this structure. The ear was then digitally deconstructed and separated into its individual auricular components for reconstruction. The completed ear and its individual components were 3D printed using polylactic acid filament and sterilized following manufacturer specifications. RESULTS The sterilized models were brought to the operating room to be utilized by the surgeon. The models allowed for more accurate anatomic measurements compared to 2D tracings, which reduced the degree of estimation required by surgeons. Approximately 20 g of the PLA filament were utilized for the construction of these models, yielding a total material cost of approximately $1. CONCLUSION Using the methodology detailed in this report, as well as departmentally available resources (3D digital photography and 3D printing), a sterilizable, patient-specific, and inexpensive 3D auricular model was fabricated to be used intraoperatively. This technique of printing customized-to-patient models for surgeons to use as 'guides' shows great promise.
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Affiliation(s)
- Roberto L Flores
- Hansjörg Wyss Department of Plastic Surgery, New York University School of Medicine New York, NY 10010, USA
| | - Hannah Liss
- DDS Candidate New York University College of Dentistry, New York, NY 10010, USA
| | - Samuel Raffaelli
- DDS Candidate New York University College of Dentistry, New York, NY 10010, USA
| | - Aiza Humayun
- DDS Candidate New York University College of Dentistry, New York, NY 10010, USA
| | - Kimberly S Khouri
- MD Candidate New York University School of Medicine, New York, NY 10010, USA
| | - Paulo G Coelho
- Hansjörg Wyss Department of Plastic Surgery, New York University School of Medicine New York, NY 10010, USA; Department of Biomaterials and Biomimetics, College of Dentistry New York University, New York, NY 10010, USA
| | - Lukasz Witek
- Department of Biomaterials and Biomimetics, College of Dentistry New York University, New York, NY 10010, USA.
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Venkat A, Christensen C, Gyulassy A, Summa B, Federer F, Angelucci A, Pascucci V. A Scalable Cyberinfrastructure for Interactive Visualization of Terascale Microscopy Data. N Y Sci Data Summit NYSDS 2016. [PMID: 28638896 DOI: 10.1109/nysds.2016.7747805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The goal of the recently emerged field of connectomics is to generate a wiring diagram of the brain at different scales. To identify brain circuitry, neuroscientists use specialized microscopes to perform multichannel imaging of labeled neurons at a very high resolution. CLARITY tissue clearing allows imaging labeled circuits through entire tissue blocks, without the need for tissue sectioning and section-to-section alignment. Imaging the large and complex non-human primate brain with sufficient resolution to identify and disambiguate between axons, in particular, produces massive data, creating great computational challenges to the study of neural circuits. Researchers require novel software capabilities for compiling, stitching, and visualizing large imagery. In this work, we detail the image acquisition process and a hierarchical streaming platform, ViSUS, that enables interactive visualization of these massive multi-volume datasets using a standard desktop computer. The ViSUS visualization framework has previously been shown to be suitable for 3D combustion simulation, climate simulation and visualization of large scale panoramic images. The platform is organized around a hierarchical cache oblivious data layout, called the IDX file format, which enables interactive visualization and exploration in ViSUS, scaling to the largest 3D images. In this paper we showcase the VISUS framework used in an interactive setting with the microscopy data.
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Affiliation(s)
- A Venkat
- Scientific Computing and Imaging Institute, University of Utah, Salt Lake City, UT, USA
| | - C Christensen
- Scientific Computing and Imaging Institute, University of Utah, Salt Lake City, UT, USA
| | - A Gyulassy
- Scientific Computing and Imaging Institute, University of Utah, Salt Lake City, UT, USA
| | - B Summa
- Department of Computer Science, Tulane University
| | - F Federer
- Department of Ophthalmology and Visual Science, Moran Eye Center, University of Utah, Salt Lake City, UT, USA
| | - A Angelucci
- Department of Ophthalmology and Visual Science, Moran Eye Center, University of Utah, Salt Lake City, UT, USA
| | - V Pascucci
- Scientific Computing and Imaging Institute, University of Utah, Salt Lake City, UT, USA
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Drijkoningen T, Knoter R, Coerkamp EG, Koning AHJ, Rhemrev SJ, Beeres FJ. Inter-observer agreement between 2-dimensional CT versus 3-dimensional I-Space model in the Diagnosis of Occult Scaphoid Fractures. Arch Bone Jt Surg 2016; 4:343-347. [PMID: 27847847 PMCID: PMC5100450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 03/08/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND The I-Space is a radiological imaging system in which Computed Tomography (CT)-scans can be evaluated as a three dimensional hologram. The aim of this study is to analyze the value of virtual reality (I-Space) in diagnosing acute occult scaphoid fractures. METHODS A convenient cohort of 24 patients with a CT-scan from prior studies, without a scaphoid fracture on radiograph, yet high clinical suspicion of a fracture, were included in this study. CT-scans were evaluated in the I-Space by 7 observers of which 3 observers assessed the scans in the I-Space twice. The observers in this study assessed in the I-Space whether the patient had a scaphoid fracture. The kappa value was calculated for inter- and intra-observer agreement. RESULTS The Kappa value varied from 0.11 to 0.33 for the first assessment. For the three observers who assessed the CT-scans twice; observer 1 improved from a kappa of 0.33 to 0.50 (95% CI 0.26-0.74, P=0.01), observer 2 from 0.17 to 0.78 (95% CI 0.36-1.0, P<0.001), and observer 3 from 0.11 to 0.24 (95% CI 0.0-0.77, P=0.24). CONCLUSION Following our findings the I-Space has a fast learning curve and has a potential place in the diagnostic modalities for suspected scaphoid fractures.
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Affiliation(s)
- Tessa Drijkoningen
- Orthopaedic Hand and Upper Extremity Service, Massachusetts General Hospital, Boston, USA
| | - Robert Knoter
- Orthopaedic Hand and Upper Extremity Service, Massachusetts General Hospital, Boston, USA
| | - Emile G Coerkamp
- Orthopaedic Hand and Upper Extremity Service, Massachusetts General Hospital, Boston, USA
| | - Anton H J Koning
- Orthopaedic Hand and Upper Extremity Service, Massachusetts General Hospital, Boston, USA
| | - Steven J Rhemrev
- Orthopaedic Hand and Upper Extremity Service, Massachusetts General Hospital, Boston, USA
| | - Frank J Beeres
- Orthopaedic Hand and Upper Extremity Service, Massachusetts General Hospital, Boston, USA
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Katz MY, Kusakari Y, Aoyagi H, Higa JK, Xiao CY, Abdelkarim AZ, Marh K, Aoyagi T, Rosenzweig A, Lozanoff S, Matsui T. Three-dimensional myocardial scarring along myofibers after coronary ischemia-reperfusion revealed by computerized images of histological assays. Physiol Rep 2014; 2:2/7/e12072. [PMID: 25347856 PMCID: PMC4187547 DOI: 10.14814/phy2.12072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Adverse left ventricular (LV) remodeling after acute myocardial infarction is characterized by LV dilatation and development of a fibrotic scar, and is a critical factor for the prognosis of subsequent development of heart failure. Although myofiber organization is recognized as being important for preserving physiological cardiac function and structure, the anatomical features of injured myofibers during LV remodeling have not been fully defined. In a mouse model of ischemia-reperfusion (I/R) injury induced by left anterior descending coronary artery ligation, our previous histological assays demonstrated that broad fibrotic scarring extended from the initial infarct zone to the remote zone, and was clearly demarcated along midcircumferential myofibers. Additionally, no fibrosis was observed in longitudinal myofibers in the subendocardium and subepicardium. However, a histological analysis of tissue sections does not adequately indicate myofiber injury distribution throughout the entire heart. To address this, we investigated patterns of scar formation along myofibers using three-dimensional (3D) images obtained from multiple tissue sections from mouse hearts subjected to I/R injury. The fibrotic scar area observed in the 3D images was consistent with the distribution of the midcircumferential myofibers. At the apex, the scar formation tracked along the myofibers in an incomplete C-shaped ring that converged to a triangular shape toward the end. Our findings suggest that myocyte injury after transient coronary ligation extends along myofibers, rather than following the path of coronary arteries penetrating the myocardium. The injury pattern observed along myofibers after I/R injury could be used to predict prognoses for patients with myocardial infarction.
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Affiliation(s)
- Monica Y Katz
- Department of Anatomy, Biochemistry & Physiology, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii
| | - Yoichiro Kusakari
- Cardiovascular Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Hiroko Aoyagi
- Department of Anatomy, Biochemistry & Physiology, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii
| | - Jason K Higa
- Department of Anatomy, Biochemistry & Physiology, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii
| | - Chun-Yang Xiao
- Cardiovascular Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Ahmed Z Abdelkarim
- Department of Anatomy, Biochemistry & Physiology, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii
| | - Karra Marh
- Department of Anatomy, Biochemistry & Physiology, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii
| | - Toshinori Aoyagi
- Department of Anatomy, Biochemistry & Physiology, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii
| | - Anthony Rosenzweig
- Cardiovascular Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Scott Lozanoff
- Department of Anatomy, Biochemistry & Physiology, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii
| | - Takashi Matsui
- Department of Anatomy, Biochemistry & Physiology, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii Cardiovascular Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
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Wang QJ, Guo Y, Zhang Y, Hu YY, Li WP, Lu W, Lin W. 3D MRI of oculomotor nerve schwannoma in the prepontine cistern: a case report. Clin Imaging 2013; 37:947-9. [PMID: 23845257 DOI: 10.1016/j.clinimag.2013.06.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Accepted: 06/04/2013] [Indexed: 11/18/2022]
Abstract
Oculomotor nerve schwannoma is an extremely rare tumor. Only less than 40 cases have been reported in the literature. We report the case of a small oculomotor nerve schwannoma arising from the prepontine cistern in a 30-year-old man with a long-time ophthalmoplegic migraine. The spatial relationship of the tumor, oculomotor nerve, and surrounding arteries was clearly demonstrated by using three three-dimensional magnetic resonance imaging sequences.
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Affiliation(s)
- Qing-jun Wang
- Department of Radiology, Chinese Navy General Hospital of PLA, Fucheng Road, Beijing 100037, China.
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