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Láinez Ramos-Bossini AJ, López Cornejo D, Redruello Guerrero P, Ruiz Santiago F. The Educational Impact of Radiology in Anatomy Teaching: A Field Study Using Cross-Sectional Imaging and 3D Printing for the Study of the Spine. Acad Radiol 2024; 31:329-337. [PMID: 37925345 DOI: 10.1016/j.acra.2023.10.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 09/26/2023] [Accepted: 10/09/2023] [Indexed: 11/06/2023]
Abstract
INTRODUCTION Cross-sectional imaging and 3D printing represent state-of-the-art approaches to improve anatomy teaching compared to traditional learning, but their use in medical schools remains limited. This study explores the utility of these educational tools for teaching normal and pathological spinal anatomy, aiming to improve undergraduate medical education. MATERIALS AND METHODS A field study was conducted on a cohort of undergraduate medical students who were exposed to anatomy lessons of the spine considering three learning paradigms: traditional learning, cross-sectional imaging examinations, and 3D printed models. 20 students (intervention group) received the three approaches, and other 20 students (control group) received the conventional (traditional) approach. The students were examined through a multiple-choice test and their results were compared to those of a control group exposed to traditional learning matched by age, sex and anatomy grades. In addition, students in the experimental group were assessed for their satisfaction with each learning method by means of an ad hoc questionnaire. RESULTS Students exposed to cross-sectional imaging and 3D printing demonstrated better knowledge outcomes compared to the control group. They showed high satisfaction rates and reported that these technologies enhanced spatial understanding and facilitated visualization of specific pathologies. However, limitations such as the representativeness of non-bone conditions in 3D printed models and the need for further knowledge on imaging fundamentals were highlighted. CONCLUSION Cross-sectional imaging and 3D printing offer valuable tools for enhancing the teaching of spinal anatomy in undergraduate medical education. Radiologists are well positioned to lead the integration of these technologies, and further research should explore their potential in teaching anatomy across different anatomical regions.
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Affiliation(s)
- Antonio Jesús Láinez Ramos-Bossini
- Unit of Musculoskeletal Radiology, Department of Radiology, Hospital Universitario Virgen de las Nieves, 18014 Granada, Spain (A.J.L.R.B., F.R.S.); Biosanitary Institute of Granada (ibs.GRANADA), 18016 Granada, Spain (A.J.L.R.B., P.R.G., F.R.S.); PhD Programme in Clinical Medicine and Public Health, University of Granada, 18071 Granada, Spain (A.J.L.R.B.).
| | - David López Cornejo
- Department of Electronics and Computer Technology, Faculty of Science, University of Granada, 18071 Granada, Spain (D.L.C.)
| | - Pablo Redruello Guerrero
- Biosanitary Institute of Granada (ibs.GRANADA), 18016 Granada, Spain (A.J.L.R.B., P.R.G., F.R.S.)
| | - Fernando Ruiz Santiago
- Unit of Musculoskeletal Radiology, Department of Radiology, Hospital Universitario Virgen de las Nieves, 18014 Granada, Spain (A.J.L.R.B., F.R.S.); Biosanitary Institute of Granada (ibs.GRANADA), 18016 Granada, Spain (A.J.L.R.B., P.R.G., F.R.S.); Department of Radiology and Physical Medicine, School of Medicine, University of Granada, 18016 Granada, Spain (F.R.S.)
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Chen D, Ganapathy A, Abraham N, Marquis KM, Bishop GL, Rybicki FJ, Hoegger MJ, Ballard DH. 3D printing exposure and perception in radiology residency: survey results of radiology chief residents. 3D Print Med 2023; 9:13. [PMID: 37103761 PMCID: PMC10133904 DOI: 10.1186/s41205-023-00173-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 03/24/2023] [Indexed: 04/28/2023] Open
Abstract
RATIONALE AND OBJECTIVES The purpose of this study is to summarize a survey of radiology chief residents focused on 3D printing in radiology. MATERIALS AND METHODS An online survey was distributed to chief residents in North American radiology residencies by subgroups of the Association of University Radiologists. The survey included a subset of questions focused on the clinical use of 3D printing and perceptions of the role of 3D printing and radiology. Respondents were asked to define the role of 3D printing at their institution and asked about the potential role of clinical 3D printing in radiology and radiology residencies. RESULTS 152 individual responses from 90 programs were provided, with a 46% overall program response rate (n = 90/194 radiology residencies). Most programs had 3D printing at their institution (60%; n = 54/90 programs). Among the institutions that perform 3D printing, 33% (n = 18/54) have structured opportunities for resident contribution. Most residents (60%; n = 91/152 respondents) feel they would benefit from 3D printing exposure or educational material. 56% of residents (n = 84/151) believed clinical 3D printing should be centered in radiology departments. 22% of residents (n = 34/151) believed it would increase communication and improve relationships between radiology and surgery colleagues. A minority (5%; 7/151) believe 3D printing is too costly, time-consuming, or outside a radiologist's scope of practice. CONCLUSIONS A majority of surveyed chief residents in accredited radiology residencies believe they would benefit from exposure to 3D printing in residency. 3D printing education and integration would be a valuable addition to current radiology residency program curricula.
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Affiliation(s)
- David Chen
- School of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Aravinda Ganapathy
- School of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Nihil Abraham
- Department of Internal Medicine, University of California-Riverside School of Medicine, Riverside, CA, USA
| | - Kaitlin M Marquis
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Grace L Bishop
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO, USA.
| | - Frank J Rybicki
- Department of Radiology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Mark J Hoegger
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO, USA
| | - David H Ballard
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO, USA
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Jacob J, Stunden C, Zakani S. Exploring the value of three-dimensional printing and virtualization in paediatric healthcare: A multi-case quality improvement study. Digit Health 2023; 9:20552076231159988. [PMID: 36865771 PMCID: PMC9972041 DOI: 10.1177/20552076231159988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 02/09/2023] [Indexed: 03/02/2023] Open
Abstract
Background Three-dimensional printing is being utilized in clinical medicine to support activities including surgical planning, education, and medical device fabrication. To better understand the impacts of this technology, a survey was implemented with radiologists, specialist physicians, and surgeons at a tertiary care hospital in Canada, examining multidimensional value and considerations for uptake. Objectives To examine how three-dimensional printing can be integrated into the paediatric context and highlight areas of impact and value to the healthcare system using Kirkpatrick's Model. Secondarily, to explore the perspective of clinicians utilizing three-dimensional models and how they make decisions about whether or not to use the technology in patient care. Methods A post-case survey. Descriptive statistics are provided for Likert-style questions, and a thematic analysis was conducted to identify common patterns in open-ended responses. Results In total, 37 respondents were surveyed across 19 clinical cases, providing their perspectives on model reaction, learning, behaviour, and results. We found surgeons and specialists to consider the models more beneficial than radiologists. Results further showed that the models were more helpful when used to assess the likelihood of success or failure of clinical management strategies, and for intraoperative orientation. We demonstrate that three-dimensional printed models could improve perioperative metrics, including a reduction in operating room time, but with a reciprocal effect on pre-procedural planning time. Clinicians who shared the models with patients and families thought it increased understanding of the disease and surgical procedure, and had no effect on their consultation time. Conclusions Three-dimensional printing and virtualization were used in preoperative planning and for communication among the clinical care team, trainees, patients, and families. Three-dimensional models provide multidimensional value to clinical teams, patients, and the health system. Further investigation is warranted to assess value in other clinical areas, across disciplines, and from a health economics and outcomes perspective.
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Affiliation(s)
- John Jacob
- Faculty of Medicine, Department of Paediatrics, University of British
Columbia, Vancouver, BC, Canada
- Digital Lab, BC Children's Hospital, Vancouver, BC, Canada
- Bayes Business School, City, University of London, London, UK
- John Jacob, Faculty of Medicine, Department
of Paediatrics, University of British Columbia, 2D19 – 4480 Oak Street,
Vancouver, BC V6H 3V4, Canada.
| | - Chelsea Stunden
- Faculty of Medicine, Department of Paediatrics, University of British
Columbia, Vancouver, BC, Canada
- Digital Lab, BC Children's Hospital, Vancouver, BC, Canada
| | - Sima Zakani
- Faculty of Medicine, Department of Paediatrics, University of British
Columbia, Vancouver, BC, Canada
- Digital Lab, BC Children's Hospital, Vancouver, BC, Canada
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Ley T. Imagine all you want, but…. J Med Libr Assoc 2022; 110:372-375. [PMID: 36589307 PMCID: PMC9782770 DOI: 10.5195/jmla.2022.1415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
3D printing is an emerging trend in medical care [1]. Medical libraries can play a key role in advancing this new technology [2]. Using a National Library of Medicine (NLM) grant, the medical library was able to purchase a basic 3D printer to create models for patient care and medical education. Despite a slow rollout for the new technology, there was a strong need once word of mouth spread about the new 3D printer. The one-year grant cycle, as well as the following three years, provide supporting evidence that even a basic 3D printer can advance patient care for clinicians and improve medical education for students [3]. The popularity of the technology, clinical support and demand, as well as student interest can drive the program forward on its own and support the medical library's mission to improve community care and create an environment of enhanced learning [1].
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Affiliation(s)
- Taran Ley
- , Medical Library Director, Southern Illinois University School of Medicine - Medical Library, Springfield, IL
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Schwartz J, Ballard DH. Feasibility of Customized Pillboxes to Enhance Medication Adherence: A Randomized Controlled Trial. Arch Phys Med Rehabil 2022; 103:2288-2295. [PMID: 35430239 DOI: 10.1016/j.apmr.2022.03.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 03/16/2022] [Accepted: 03/29/2022] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To test the (1) feasibility of an assistive technology based pillbox intervention on medication adherence; (2) feasibility of trial procedures; and (3) preliminary effectiveness of the pillbox intervention on medication adherence. DESIGN A single-blinded randomized controlled clinical trial was conducted during 2-4 weeks. SETTING Researchers recruited a convenience sample to participate in this university laboratory-based study. PARTICIPANTS English-speaking consumers of 2 or more daily medications (N=15) participated in the study. Individuals with cognitive impairment or who did not manage their own medications were excluded. INTERVENTIONS Participants were randomized to 1 of 3 pillbox interventions: (1) standard-of-care pillbox; (2) customized off-the-shelf pillbox; or (3) customized 3-dimensional (3D) printed pillbox. MAIN OUTCOME MEASURES Outcome measures were divided among the 3 goals of the study. In addition to feasibility metrics, the Adherence to Refills and Medications Scale was used to measure the primary outcome measure, medication adherence. The Quebec User Evaluation of Satisfaction with Assistive Technology was used to measure pillbox satisfaction. RESULTS Researchers successfully administered 6 standard-of-care, 5 custom off-the-shelf, and 4 custom 3D printed pillboxes. Compared with the standard-of-care pillboxes, customized 3D printed pillboxes had large (d=1.04) and customized off-the-shelf pillboxes had medium (d=0.67) effects on medication adherence. CONCLUSIONS Prescription of customized pillboxes using a manualized and novel assistive technology approach that leverages 3D printing is feasible.
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Affiliation(s)
- Jaclyn Schwartz
- Program in Occupational Therapy, Washington University in St. Louis School of Medicine, St. Louis, MO.
| | - David H Ballard
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, MO
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Ganapathy A, Chen D, Elumalai A, Albers B, Tappa K, Jammalamadaka U, Hoegger MJ, Ballard DH. Guide for starting or optimizing a 3D printing clinical service. Methods 2022; 206:41-52. [PMID: 35964862 DOI: 10.1016/j.ymeth.2022.08.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 08/08/2022] [Accepted: 08/09/2022] [Indexed: 10/15/2022] Open
Abstract
Three-dimensional (3D) printing has applications in many fields and has gained substantial traction in medicine as a modality to transform two-dimensional scans into three-dimensional renderings. Patient-specific 3D printed models have direct patient care uses in surgical and procedural specialties, allowing for increased precision and accuracy in developing treatment plans and guiding surgeries. Medical applications include surgical planning, surgical guides, patient and trainee education, and implant fabrication. 3D printing workflow for a laboratory or clinical service that produces anatomic models and guides includes optimizing imaging acquisition and post-processing, segmenting the imaging, and printing the model. Quality assurance considerations include supervising medical imaging expert radiologists' guidance and self-implementing in-house quality control programs. The purpose of this review is to provide a workflow and guide for starting or optimizing laboratories and clinical services that 3D-print anatomic models or guides for clinical use.
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Affiliation(s)
- Aravinda Ganapathy
- School of Medicine, Washington University School of Medicine, St. Louis, MO, USA.
| | - David Chen
- School of Medicine, Washington University School of Medicine, St. Louis, MO, USA.
| | - Anusha Elumalai
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO, USA.
| | - Brian Albers
- 3D Printing Center, Barnes Jewish Hospital, St. Louis, MO, USA.
| | - Karthik Tappa
- Anatomic 3D Printing and Visualization Program, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | | | - Mark J Hoegger
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO, USA.
| | - David H Ballard
- School of Medicine, Washington University School of Medicine, St. Louis, MO, USA.
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Fletcher J, Miskovic D. The Mesentery in Complete Mesocolic Excision. Clin Colon Rectal Surg 2022; 35:288-297. [PMID: 35966980 PMCID: PMC9365457 DOI: 10.1055/s-0042-1743430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The following article summarizes technical aspects of how to operate in the mesentery during complete mesocolic excision (CME). Increasingly, CME is being adopted and as such it is important to establish the anatomical basis of the techniques involved. This review thus serves to provide that foundation and explains the surgical techniques built on it.
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Affiliation(s)
- Jordan Fletcher
- Department of Colorectal Surgery, St. Mark's Hospital, London, United Kingdom
| | - Danilo Miskovic
- Department of Colorectal Surgery, St. Mark's Hospital, London, United Kingdom
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8
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Use of 3D printing and pre-contouring plate in the surgical planning of acetabular fractures: A systematic review. Orthop Traumatol Surg Res 2022; 108:103111. [PMID: 34648997 DOI: 10.1016/j.otsr.2021.103111] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 06/15/2021] [Accepted: 07/16/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND Acetabular fractures are caused by high energy injuries. The treatment aims to reconstruct the articular surface, restoring the anatomical structure. The surgical management of these fractures is difficult because it requires familiarity with the 3D anatomy of the pelvis. With the use of 3D printing technique for planning surgery, this limitation could be overcome. HYPOTHESIS Studies examining the use of 3D printing in pre-operative planning of acetabular fractures tend to agree on its usefulness. METHODS A systematic review of two electronic medical databases was performed by three independent authors, using the following inclusion criteria: any type of acetabular fracture and pre-operative use of 3D printing to plan the surgery. RESULTS Among 93 screened articles, following selection criteria, six randomised controlled human trials (hRCT) were eligible for the study; articles compare a group in which a pre-contouring plate was performed through 3D printing with a control group in which the plate was intraoperatively modelled. CONCLUSION This review demonstrates the advantage of 3D printing in terms of surgical time, reduction of blood losses, quality of fracture reduction, and fixation, and reporting best clinical outcomes. LEVEL OF EVIDENCE II.
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Papotto G, Testa G, Mobilia G, Perez S, Dimartino S, Giardina SMC, Sessa G, Pavone V. Use of 3D printing and pre-contouring plate in the surgical planning of acetabular fractures: A systematic review. ORTHOPAEDICS & TRAUMATOLOGY: SURGERY & RESEARCH 2022; 108:103111. [DOI: https:/doi.org/10.1016/j.otsr.2021.103111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2024]
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10
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Image segmentation of post-mortem computed tomography data in forensic imaging: Methods and applications. FORENSIC IMAGING 2022. [DOI: 10.1016/j.fri.2021.200483] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Duarte J, Loja MAR, Portal R, Vieira L. 3D Printing of Abdominal Immobilization Masks for Therapeutics: Dosimetric, Mechanical and Financial Analysis. Bioengineering (Basel) 2022; 9:bioengineering9020055. [PMID: 35200408 PMCID: PMC8869160 DOI: 10.3390/bioengineering9020055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/18/2022] [Accepted: 01/21/2022] [Indexed: 12/03/2022] Open
Abstract
Molding immobilization masks is a time-consuming process, strongly dependent on the healthcare professional, and potentially uncomfortable for the patient. Thus, an alternative sustainable automated production process is proposed for abdominal masks, using fused deposition modelling (FDM) 3D printing with polylactic acid (PLA). Radiological properties of PLA were evaluated by submitting a set of PLA plates to photon beam radiation, while estimations of their mechanical characteristics were assessed through numerical simulation. Based on the obtained results, the abdominal mask was 3D printed and process costs and times were analyzed. The plates revealed dose transmissions similar to the conventional mask at all energies, and mechanical deformation guarantees the required immobilization, with a 66% final cost reduction. PLA proved to be an excellent material for this purpose. Despite the increase in labour costs, a significant reduction in material costs is observed with the proposed process. However, the time results are not favorable, mainly due to the printing technique used in this study.
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Affiliation(s)
- Jessica Duarte
- ISEL—Instituto Superior de Engenharia de Lisboa, ESTeSL–Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa, 1549-020 Lisboa, Portugal;
| | - Maria Amélia Ramos Loja
- CIMOSM-Centro de Investigação em Modelação e Otimização de Sistemas Multifuncionais, ISEL-Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, 1549-020 Lisboa, Portugal; (M.A.R.L.); (R.P.)
- IDMEC, IST-Instituto Superior Técnico, 1049-001 Lisboa, Portugal
| | - Ricardo Portal
- CIMOSM-Centro de Investigação em Modelação e Otimização de Sistemas Multifuncionais, ISEL-Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, 1549-020 Lisboa, Portugal; (M.A.R.L.); (R.P.)
| | - Lina Vieira
- CIMOSM-Centro de Investigação em Modelação e Otimização de Sistemas Multifuncionais, ISEL-Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, 1549-020 Lisboa, Portugal; (M.A.R.L.); (R.P.)
- H&TRC—Health & Technology Research Center, ESTeSL-Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, 1990-096 Lisboa, Portugal
- Correspondence:
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Pérez-Köhler B, Benito-Martínez S, Gómez-Gil V, Rodríguez M, Pascual G, Bellón JM. New Insights into the Application of 3D-Printing Technology in Hernia Repair. MATERIALS 2021; 14:ma14227092. [PMID: 34832493 PMCID: PMC8623842 DOI: 10.3390/ma14227092] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/18/2021] [Accepted: 11/19/2021] [Indexed: 12/29/2022]
Abstract
Abdominal hernia repair using prosthetic materials is among the surgical interventions most widely performed worldwide. These materials, or meshes, are implanted to close the hernial defect, reinforcing the abdominal muscles and reestablishing mechanical functionality of the wall. Meshes for hernia repair are made of synthetic or biological materials exhibiting multiple shapes and configurations. Despite the myriad of devices currently marketed, the search for the ideal mesh continues as, thus far, no device offers optimal tissue repair and restored mechanical performance while minimizing postoperative complications. Additive manufacturing, or 3D-printing, has great potential for biomedical applications. Over the years, different biomaterials with advanced features have been successfully manufactured via 3D-printing for the repair of hard and soft tissues. This technological improvement is of high clinical relevance and paves the way to produce next-generation devices tailored to suit each individual patient. This review focuses on the state of the art and applications of 3D-printing technology for the manufacture of synthetic meshes. We highlight the latest approaches aimed at developing improved bioactive materials (e.g., optimizing antibacterial performance, drug release, or device opacity for contrast imaging). Challenges, limitations, and future perspectives are discussed, offering a comprehensive scenario for the applicability of 3D-printing in hernia repair.
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Affiliation(s)
- Bárbara Pérez-Köhler
- Departamento de Medicina y Especialidades Médicas, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, 28805 Alcalá de Henares, Spain; (B.P.-K.); (S.B.-M.)
- Biomedical Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain; (V.G.-G.); (M.R.); (J.M.B.)
- Ramón y Cajal Health Research Institute (IRYCIS), 28034 Madrid, Spain
| | - Selma Benito-Martínez
- Departamento de Medicina y Especialidades Médicas, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, 28805 Alcalá de Henares, Spain; (B.P.-K.); (S.B.-M.)
- Biomedical Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain; (V.G.-G.); (M.R.); (J.M.B.)
- Ramón y Cajal Health Research Institute (IRYCIS), 28034 Madrid, Spain
| | - Verónica Gómez-Gil
- Biomedical Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain; (V.G.-G.); (M.R.); (J.M.B.)
- Departamento de Cirugía, Ciencias Médicas y Sociales, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, 28805 Alcalá de Henares, Spain
- Departamento de Ciencias Biomédicas, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, 28805 Alcalá de Henares, Spain
| | - Marta Rodríguez
- Biomedical Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain; (V.G.-G.); (M.R.); (J.M.B.)
- Ramón y Cajal Health Research Institute (IRYCIS), 28034 Madrid, Spain
- Departamento de Cirugía, Ciencias Médicas y Sociales, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, 28805 Alcalá de Henares, Spain
| | - Gemma Pascual
- Departamento de Medicina y Especialidades Médicas, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, 28805 Alcalá de Henares, Spain; (B.P.-K.); (S.B.-M.)
- Biomedical Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain; (V.G.-G.); (M.R.); (J.M.B.)
- Ramón y Cajal Health Research Institute (IRYCIS), 28034 Madrid, Spain
- Correspondence:
| | - Juan Manuel Bellón
- Biomedical Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain; (V.G.-G.); (M.R.); (J.M.B.)
- Ramón y Cajal Health Research Institute (IRYCIS), 28034 Madrid, Spain
- Departamento de Cirugía, Ciencias Médicas y Sociales, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, 28805 Alcalá de Henares, Spain
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Deshmane S, Kendre P, Mahajan H, Jain S. Stereolithography 3D printing technology in pharmaceuticals: a review. Drug Dev Ind Pharm 2021; 47:1362-1372. [PMID: 34663145 DOI: 10.1080/03639045.2021.1994990] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Three-dimensional printing (3DP) technology is an innovative tool used in manufacturing medical devices, producing alloys, replacing biological tissues, producing customized dosage forms and so on. Stereolithography (SLA), a 3D printing technique, is very rapid and highly accurate and produces finished products of uniform quality. 3D formulations have been optimized with a perfect tool of artificial intelligence learning techniques. Complex designs/shapes can be fabricated through SLA using the photopolymerization principle. Different 3DP technologies are introduced and the most promising of these, SLA, and its commercial applications, are focused on. The high speed and effectiveness of SLA are highlighted. The working principle of SLA, the materials used and applications of the technique in a wide range of different sectors are highlighted in this review. An innovative idea of 3D printing customized pharmaceutical dosage forms is also presented. SLA compromises several advantages over other methods, such as cost effectiveness, controlled integrity of materials and greater speed. The development of SLA has allowed the development of printed pharmaceutical devices. Considering the present trends, it is expected that SLA will be used along with conventional methods of manufacturing of 3D model. This 3D printing technology may be utilized as a novel tool for delivering drugs on demand. This review will be useful for researchers working on 3D printing technologies.
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Affiliation(s)
- Subhash Deshmane
- Department of Pharmaceutics, Rajarshi Shahu College of Pharmacy, Malvihir, India
| | - Prakash Kendre
- Department of Pharmaceutics, Rajarshi Shahu College of Pharmacy, Malvihir, India
| | - Hitendra Mahajan
- Department of Pharmaceutics, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, India
| | - Shirish Jain
- Department of Pharmaceutics, Rajarshi Shahu College of Pharmacy, Malvihir, India
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Johnson A, Jani G, Carew R, Pandey A. Assessment of the accuracy of 3D printed teeth by various 3D printers in forensic odontology. Forensic Sci Int 2021; 328:111044. [PMID: 34653828 DOI: 10.1016/j.forsciint.2021.111044] [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: 01/08/2021] [Revised: 04/16/2021] [Accepted: 10/04/2021] [Indexed: 11/16/2022]
Abstract
Additive manufacturing technology has benefited many sectors, and its use in forensic sciences has opened up a variety of new opportunities for analysing and exhibiting forensic materials. However, to perform analytical procedures on 3D printed bones and teeth in forensic odontology, the metric and morphological precision of the printed replicas must first be validated. To address this, the present study was undertaken using 12 extracted human teeth that were 3D printed using five different techniques. Manual measurements and a digital mesh comparison were used to evaluate the metric precision of all samples. The findings showed that the printed replicas were accurate to within 0.5 mm of the actual teeth. It was suggested that Digital Light Processing (DLP) prints be used for potential forensic odontology applications based on measurements, digital comparison, and ease of use.
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Affiliation(s)
- Abraham Johnson
- Laboratory of Forensic Odontology, School of Forensic Science, National Forensic Sciences University, Gujarat, India.
| | - Gargi Jani
- Laboratory of Forensic Odontology, School of Forensic Science, National Forensic Sciences University, Gujarat, India.
| | - Rachael Carew
- UCL Department of Security and Crime Science, 35 Tavistock Square, London WC1H 9EZ, UK; UCL Centre for the Forensic Sciences, 35 Tavistock Square, London WC1H 9EZ, UK.
| | - Astha Pandey
- School of Forensic Science, National Forensic Sciences University, Gujarat, India.
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Barragán-Paredes MA, Mosquera-Victoria I, Viveros-Rebolledo CA, Rodríguez-Paz ML, Muñoz-Velez MF, Valencia - Llano CH. Comparison of the Mechanical Properties of Temporary Abutments Made of Polyetheretherketone and Photopolymeric Resin. Open Dent J 2021. [DOI: 10.2174/1874210602115010512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background:
Provisional abutments are widely used in the rehabilitation of dental implants as it allows the use of a provisional crown in order to restore patient aesthetics while the final restoration is being carried out; most of the temporary abutments available on the market are made of titanium alloygrade V (type Ti-6Al-4Va) and polyetheretherketone (PEEK), a material that exhibits very low adhesion to polymethylmethacrylate (PMMA).
Objective:
This research is aimed to compare the mechanical properties of commercially available PEEK abutments and abutments made using an additive technique with photopolymeric resin.
Methods:
Eighteen commercial temporary abutments manufactured in PEEK and eighteen experimental abutments manufactured by 3D printing using photopolymeric resin were used. The two groups of abutments were subjected to compression, bending and adhesion tests using six abutments of each type by test. Statistical analysis was performed with STATA 14 software. The data were analyzed by means of the Wilcoxon Mann-Whitney test, as these were two independent samples of reduced size. Values lower than (p <0.05) were considered statistically significant in all tests and rejected the null hypothesis of equality between the group medians.
Conclusion:
The results indicate that it is possible to make abutments with good mechanical properties in photopolymeric resin (CLEAR FLGP04) using additive techniques to be used as temporary abutments.
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Creation of Anatomically Correct and Optimized for 3D Printing Human Bones Models. APPLIED SYSTEM INNOVATION 2021. [DOI: 10.3390/asi4030067] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Educational institutions in several countries state that the education sector should be modernized to ensure a contemporary, individualized, and more open learning process by introducing and developing advance digital solutions and learning tools. Visualization along with 3D printing have already found their implementation in different medical fields in Pauls Stradiņš Clinical University Hospital, and Rīga Stradiņš University, where models are being used for prosthetic manufacturing, surgery planning, simulation of procedures, and student education. The study aimed to develop a detailed methodology for the creation of anatomically correct and optimized models for 3D printing from radiological data using only free and widely available software. In this study, only free and cross-platform software from widely available internet sources has been used—“Meshmixer”, “3D Slicer”, and “Meshlab”. For 3D printing, the Ultimaker 5S 3D printer along with PLA material was used. In its turn, radiological data have been obtained from the “New Mexico Decedent Image Database”. In total, 28 models have been optimized and printed. The developed methodology can be used to create new models from scratch, which can be used will find implementation in different medical and scientific fields—simulation processes, anthropology, 3D printing, bioprinting, and education.
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Critical analysis for a safe design of 3D printed Patient-Specific Surgical Guides (PSSG) for pedicle screw insertion in spinal deformities. ANNALS OF 3D PRINTED MEDICINE 2021. [DOI: 10.1016/j.stlm.2021.100022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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18
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Daoud GE, Pezzutti DL, Dolatowski CJ, Carrau RL, Pancake M, Herderick E, VanKoevering KK. Establishing a point-of-care additive manufacturing workflow for clinical use. JOURNAL OF MATERIALS RESEARCH 2021; 36:3761-3780. [PMID: 34248272 PMCID: PMC8259775 DOI: 10.1557/s43578-021-00270-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 06/09/2021] [Indexed: 06/13/2023]
Abstract
Additive manufacturing, or 3-Dimensional (3-D) Printing, is built with technology that utilizes layering techniques to build 3-D structures. Today, its use in medicine includes tissue and organ engineering, creation of prosthetics, the manufacturing of anatomical models for preoperative planning, education with high-fidelity simulations, and the production of surgical guides. Traditionally, these 3-D prints have been manufactured by commercial vendors. However, there are various limitations in the adaptability of these vendors to program-specific needs. Therefore, the implementation of a point-of-care in-house 3-D modeling and printing workflow that allows for customization of 3-D model production is desired. In this manuscript, we detail the process of additive manufacturing within the scope of medicine, focusing on the individual components to create a centralized in-house point-of-care manufacturing workflow. Finally, we highlight a myriad of clinical examples to demonstrate the impact that additive manufacturing brings to the field of medicine.
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Affiliation(s)
| | | | | | - Ricardo L. Carrau
- The Ohio State University College of Medicine, Columbus, OH USA
- The Ohio State University James Comprehensive Cancer Center, Columbus, OH 43210 USA
- Department of Otolaryngology, The Ohio State University, Columbus, OH USA
| | - Mary Pancake
- Department of Engineering, The Ohio State University, Columbus, OH USA
| | - Edward Herderick
- Department of Engineering, The Ohio State University, Columbus, OH USA
| | - Kyle K. VanKoevering
- The Ohio State University College of Medicine, Columbus, OH USA
- The Ohio State University James Comprehensive Cancer Center, Columbus, OH 43210 USA
- Department of Otolaryngology, The Ohio State University, Columbus, OH USA
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Haleem A, Javaid M, Suman R, Singh RP. 3D Printing Applications for Radiology: An Overview. Indian J Radiol Imaging 2021; 31:10-17. [PMID: 34316106 PMCID: PMC8299499 DOI: 10.1055/s-0041-1729129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Three-dimensional (3D) printing technologies are part of additive manufacturing processes and are used to manufacture a 3D physical model from a digital computer-aided design model as per the required shape and size. These technologies are now used for advanced radiology applications by providing all information through 3D physical model. It provides innovation in radiology for clinical applications, treatment planning, procedural simulation, medical and patient education. Radiological advancements have been made in diagnosis and communication through medical digital imaging techniques like computed tomography, magnetic resonance imaging. These images are converted into Digital Imaging and Communications in Medicine in Standard Triangulate Language file format, easily printable in 3D printing technologies. This 3D model provides in-depth information about pathologic and anatomic states. It is useful to create new opportunities related to patient care. This article discusses the potential of 3D printing technology in radiology. The steps involved in 3D printing for radiology are discussed diagrammatically, and finally identified 12 significant applications of 3D printing technology for radiology with a brief description. A radiologist can incorporate this technology to fulfil different challenges such as training, planning, guidelines, and better communications.
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Affiliation(s)
- Abid Haleem
- Department of Mechanical Engineering, Jamia Millia Islamia, New Delhi, India
| | - Mohd Javaid
- Department of Mechanical Engineering, Jamia Millia Islamia, New Delhi, India
| | - Rajiv Suman
- Department of Industrial and Production Engineering, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India
| | - Ravi Pratap Singh
- Department of Industrial and Production Engineering, Dr. B. R. Ambedkar National Institute of Technology, Jalandhar, Punjab, India
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A review of visualization techniques of post-mortem computed tomography data for forensic death investigations. Int J Legal Med 2021; 135:1855-1867. [PMID: 33931808 PMCID: PMC8354982 DOI: 10.1007/s00414-021-02581-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 03/16/2021] [Indexed: 11/17/2022]
Abstract
Postmortem computed tomography (PMCT) is a standard image modality used in forensic death investigations. Case- and audience-specific visualizations are vital for identifying relevant findings and communicating them appropriately. Different data types and visualization methods exist in 2D and 3D, and all of these types have specific applications. 2D visualizations are more suited for the radiological assessment of PMCT data because they allow the depiction of subtle details. 3D visualizations are better suited for creating visualizations for medical laypersons, such as state attorneys, because they maintain the anatomical context. Visualizations can be refined by using additional techniques, such as annotation or layering. Specialized methods such as 3D printing and virtual and augmented reality often require data conversion. The resulting data can also be used to combine PMCT data with other 3D data such as crime scene laser scans to create crime scene reconstructions. Knowledge of these techniques is essential for the successful handling of PMCT data in a forensic setting. In this review, we present an overview of current visualization techniques for PMCT.
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Youman S, Dang E, Jones M, Duran D, Brenseke B. The Use of 3D Printers in Medical Education with a Focus on Bone Pathology. MEDICAL SCIENCE EDUCATOR 2021; 31:581-588. [PMID: 34457913 PMCID: PMC8368121 DOI: 10.1007/s40670-021-01222-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/20/2021] [Indexed: 05/08/2023]
Abstract
The purpose of this study was to determine the feasibility and effectiveness of incorporating three-dimensional (3D)-printed models into pathology lectures. 3D models of an osteochondroma and an osteosarcoma were printed from a digital model and MRI, respectively, using both stereolithographic and fused-deposition modeling printing techniques. First year medical students with no prior instruction on bone tumors were randomized into two groups: a control group with 2D images and an experimental group with 3D models. The students viewed a pre-recorded lecture about bone tumors, supplemented with handling either 2D images or 3D models of an osteochondroma and osteosarcoma. Performance on pre- and post-activity assessments was compared to evaluate educational effectiveness. Printing 3D models of bone tumors was relatively simple and inexpensive. Assessment data showed that although both groups had improved performance and greater confidence post-lecture, those that handled the 3D models had a more favorable experience than those with the 2D images. This study demonstrates 3D-printed models can be incorporated into a pathology lecture and can positively influence teaching-learning outcomes.
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Affiliation(s)
- Shayna Youman
- Campbell University Jerry M. Wallace School of Osteopathic Medicine, Lillington, NC USA
| | - Evan Dang
- Campbell University Jerry M. Wallace School of Osteopathic Medicine, Lillington, NC USA
| | - Myers Jones
- Campbell University Jerry M. Wallace School of Osteopathic Medicine, Lillington, NC USA
| | - Deanna Duran
- Cape Fear Research Consortium, Fayetteville, NC USA
| | - Bonnie Brenseke
- Campbell University Jerry M. Wallace School of Osteopathic Medicine, Lillington, NC USA
- Cape Fear Research Consortium, Fayetteville, NC USA
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22
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Ballard DH, Jammalamadaka U, Meacham KW, Hoegger MJ, Burke BA, Morris JA, Scott AR, O'Connor Z, Gan C, Hu J, Tappa K, Wahl RL, Woodard PK. Quantitative Fit Tested N95 Respirator-Alternatives Generated With CT Imaging and 3D Printing: A Response to Potential Shortages During the COVID-19 Pandemic. Acad Radiol 2021; 28:158-165. [PMID: 33257256 PMCID: PMC7680062 DOI: 10.1016/j.acra.2020.11.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 11/15/2020] [Accepted: 11/16/2020] [Indexed: 02/06/2023]
Abstract
Rationale and Objective Three-dimensional (3D) printing allows innovative solutions for personal protective equipment, particularly in times of crisis. Our goal was to generate an N95-alternative 3D-printed respirator that passed Occupational Safety and Health Administration (OSHA)-certified quantitative fit testing during the COVID-19 pandemic. Materials and Methods 3D printed prototypes for N95 solutions were created based on the design of commercial N95 respirators. Computed tomography imaging was performed on an anthropomorphic head phantom wearing a commercially available N95 respirator and these facial contour data was used in mask prototyping. Prototypes were generated using rigid and flexible polymers. According to OSHA standards, prototypes underwent subsequent quantitative respirator fit testing on volunteers who passed fit tests on commercial N95 respirators. Results A total of 10 prototypes were 3D printed using both rigid (n = 5 designs) and flexible materials (n = 5 designs), Prototypes generated with rigid printing materials (n = 5 designs) did not pass quantitative respirator fit testing. Three of the five prototypes with flexible materials failed quantitative fit testing. The final two prototypes designs passed OSHA-certified quantitative fit tests with an overall mean fit factor of 138 (passing is over 100). Conclusion Through rapid prototyping, 3D printed N95 alternative masks were designed with topographical facial computed tomography data to create mask facial contour and passed OSHA-certified quantitative respiratory testing when flexible polymer was used. This mask design may provide an alternative to disposable N95 respirators in case of pandemic-related shortages. Furthermore, this approach may allow customization for those that would otherwise fail fit testing on standard commercial respirators.
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Cantré D, Langner S, Kaule S, Siewert S, Schmitz KP, Kemmling A, Weber MA. Three-dimensional imaging and three-dimensional printing for plastic preparation of medical interventions. Radiologe 2021; 60:70-79. [PMID: 32926194 DOI: 10.1007/s00117-020-00739-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Three-dimensional (3D) imaging has been available for nearly four decades and is regarded as state of the art for visualization of anatomy and pathology and for procedure planning in many clinical fields. Together with 3D image reconstructions in the form of rendered virtual 3D models, it has helped to better perceive complex anatomic and pathologic relations, improved preprocedural measuring and sizing of implants, and nowadays enables even photorealistic quality. However, presentation on 2D displays limits the 3D experience. Novel 3D printing technologies can transfer virtual anatomic models into true 3D space and produce both patient-specific models and medical devices constructed by computer-aided design. Individualized anatomic models hold great potential for medical and patient education, research, device development and testing, procedure training, preoperative planning, and fabrication of individualized instruments and implants. Hand in hand with 3D imaging, medical 3D printing has started to revolutionize medicine in certain fields and new applications are developed and introduced regularly. The demand for medical 3D printing will likely continue to rise, as it is a promising tool for plastic preparation of medical interventions. However, there is ongoing debate on the appropriateness of medical 3D printing and further research on its efficiency is needed. As experts in 3D imaging, radiologists are not only capable of advising on adequate imaging parameters, but should also become adept in 3D printing to participate in on-site 3D printing facilities and randomized controlled trials on the topic, thus contributing to improving patient outcomes via personalized medicine through patient-specific preparation of medical interventions.
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Affiliation(s)
- Daniel Cantré
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, Rostock University Medical Center, Ernst-Heydemann-Str. 6, 18057, Rostock, Mecklenburg Western Pomerania, Germany.
| | - Sönke Langner
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, Rostock University Medical Center, Ernst-Heydemann-Str. 6, 18057, Rostock, Mecklenburg Western Pomerania, Germany
| | - Sebastian Kaule
- Institute for Implant Technology and Biomaterials e. V., associated Institution of the University of Rostock, Friedrich-Barnewitz-Straße 4, 18119, Rostock-Warnemünde, Germany
| | - Stefan Siewert
- Institute for Implant Technology and Biomaterials e. V., associated Institution of the University of Rostock, Friedrich-Barnewitz-Straße 4, 18119, Rostock-Warnemünde, Germany
| | - Klaus-Peter Schmitz
- Institute for Implant Technology and Biomaterials e. V., associated Institution of the University of Rostock, Friedrich-Barnewitz-Straße 4, 18119, Rostock-Warnemünde, Germany.,Institute for Biomedical Engineering, Rostock University Medical Center, Friedrich-Barnewitz-Straße 4, 18119, Rostock-Warnemünde, Germany
| | - André Kemmling
- Institute of Neuroradiology, University Hospital Luebeck, Ratzeburger Allee 160, 23562, Luebeck, Germany
| | - Marc-André Weber
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, Rostock University Medical Center, Ernst-Heydemann-Str. 6, 18057, Rostock, Mecklenburg Western Pomerania, Germany
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Collings AJ, Brown K. Reconstruction and physical fit analysis of fragmented skeletal remains using 3D imaging and printing. FORENSIC SCIENCE INTERNATIONAL: REPORTS 2020. [DOI: 10.1016/j.fsir.2020.100114] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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25
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Robles M, Carew RM, Morgan RM, Rando C. A step-by-step method for producing 3D crania models from CT data. FORENSIC IMAGING 2020. [DOI: 10.1016/j.fri.2020.200404] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Ballard DH, Mills P, Duszak R, Weisman JA, Rybicki FJ, Woodard PK. Medical 3D Printing Cost-Savings in Orthopedic and Maxillofacial Surgery: Cost Analysis of Operating Room Time Saved with 3D Printed Anatomic Models and Surgical Guides. Acad Radiol 2020; 27:1103-1113. [PMID: 31542197 DOI: 10.1016/j.acra.2019.08.011] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 08/20/2019] [Accepted: 08/26/2019] [Indexed: 12/16/2022]
Abstract
RATIONALE AND OBJECTIVE Three-dimensional (3D) printed anatomic models and surgical guides have been shown to reduce operative time. The purpose of this study was to generate an economic analysis of the cost-saving potential of 3D printed anatomic models and surgical guides in orthopedic and maxillofacial surgical applications. MATERIALS AND METHODS A targeted literature search identified operating room cost-per-minute and studies that quantified time saved using 3D printed constructs. Studies that reported operative time differences due to 3D printed anatomic models or surgical guides were reviewed and cataloged. A mean of $62 per operating room minute (range of $22-$133 per minute) was used as the reference standard for operating room time cost. Different financial scenarios were modeled with the provided cost-per-minute of operating room time (using high, mean, and low values) and mean time saved using 3D printed constructs. RESULTS Seven studies using 3D printed anatomic models in surgical care demonstrated a mean 62 minutes ($3720/case saved from reduced time) of time saved, and 25 studies of 3D printed surgical guides demonstrated a mean 23 minutes time saved ($1488/case saved from reduced time). An estimated 63 models or guides per year (or 1.2/week) were predicted to be the minimum number to breakeven and account for annual fixed costs. CONCLUSION Based on the literature-based financial analyses, medical 3D printing appears to reduce operating room costs secondary to shortening procedure times. While resource-intensive, 3D printed constructs used in patients' operative care provides considerable downstream value to health systems.
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Affiliation(s)
- David H Ballard
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 S. Kingshighway Blvd, Campus Box 8131, St. Louis, MO 63110.
| | | | - Richard Duszak
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Georgia
| | - Jeffery A Weisman
- University of Illinois at Chicago Occupational Medicine, Chicago, Illinois
| | - Frank J Rybicki
- Department of Radiology, University of Cincinnati, Cincinnati, Ohio
| | - Pamela K Woodard
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 S. Kingshighway Blvd, Campus Box 8131, St. Louis, MO 63110
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Jani G, Johnson A, Parekh U, Thompson T, Pandey A. Effective approaches to three-dimensional digital reconstruction of fragmented human skeletal remains using laser surface scanning. Forensic Sci Int Synerg 2020; 2:215-223. [PMID: 32803150 PMCID: PMC7417899 DOI: 10.1016/j.fsisyn.2020.07.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 07/27/2020] [Accepted: 07/28/2020] [Indexed: 06/11/2023]
Abstract
The preservation and reconstruction of anthropological and archaeological remains has been given considerable attention in recent years, particularly within the fields of forensic science and palaeoanthropology. However, few studies have tapped the potential of using 3D technology to reconstruct, remodel and recontour remains and artefacts for the purpose of human identification. The aim of this study was to use 3D technology for the reconstruction and remodelling of fragmented and missing elements of skeletal remains. This project presents the application of three dimensional (3D) modalities to two different simulated forensic case scenarios where an attempt was made to remodel the missing element of the human cranium and reconstruction of fragmented replicated human mandible was performed. The accuracy of the reconstructed model was affirmed based on the anatomical features and digital analysis and methods for use in forensic practice are recommended.
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Affiliation(s)
- Gargi Jani
- Laboratory of Forensic Odontology, Institute of Forensic Science, Gujarat Forensic Sciences University, Gujarat, 382007, India
| | - Abraham Johnson
- Laboratory of Forensic Odontology, Institute of Forensic Science, Gujarat Forensic Sciences University, Gujarat, 382007, India
| | - Utsav Parekh
- Department of Forensic Medicine and Toxicology, Pramukhswami Medical College, Gujarat, 388325, India
| | - Tim Thompson
- School of Health & Life Sciences, Teesside University, Middlesbrough, United Kingdom
| | - Astha Pandey
- Institute of Forensic Science, Gujarat Forensic Sciences University, Gujarat, 382007, India
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Serrano C, Fontenay S, van den Brink H, Pineau J, Prognon P, Martelli N. Evaluation of 3D printing costs in surgery: a systematic review. Int J Technol Assess Health Care 2020; 36:1-7. [PMID: 32489157 DOI: 10.1017/s0266462320000331] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
OBJECTIVES The use of three-dimensional (3D) printing in surgery is expanding and there is a focus on comprehensively evaluating the clinical impact of this technology. However, although additional costs are one of the main limitations to its use, little is known about its economic impact. The purpose of this systematic review is to identify the costs associated with its use and highlight the first quantitative data available. METHODS A systematic literature review was conducted in the PubMed and Embase databases and in the National Health Service Economic Evaluation Database (NHS EED) at the University of York. Studies that reported an assessment of the costs associated with the use of 3D printing for surgical application and published between 2009 and 2019, in English or French, were included. RESULTS Nine studies were included in our review. Nine types of costs were identified, the three main ones being printing material costs (n = 6), staff costs (n = 3), and operating room costs (n = 3). The printing cost ranged from less than U.S. dollars (USD) 1 to USD 146 (in USD 2019 values) depending on the criteria used to calculate this cost. Three studies evaluated the potential savings generated by the use of 3D printing technology in surgery, based on operating time reduction. CONCLUSION This literature review highlights the lack of reliable economic data on 3D printing technology. Nevertheless, this review makes it possible to identify expenditures or items that should be considered in order to carry out more robust studies.
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Affiliation(s)
- Carole Serrano
- University Paris-Saclay, GRADES, Faculty of Pharmacy, 5 rue Jean-Baptiste Clément, 92290Châtenay-Malabry, France
| | - Sarah Fontenay
- Pharmacy Department, Georges Pompidou European Hospital, AP-HP, 20 rue Leblanc, 75015Paris, France
| | - Hélène van den Brink
- University Paris-Saclay, GRADES, Faculty of Pharmacy, 5 rue Jean-Baptiste Clément, 92290Châtenay-Malabry, France
| | - Judith Pineau
- Pharmacy Department, Georges Pompidou European Hospital, AP-HP, 20 rue Leblanc, 75015Paris, France
| | - Patrice Prognon
- Pharmacy Department, Georges Pompidou European Hospital, AP-HP, 20 rue Leblanc, 75015Paris, France
| | - Nicolas Martelli
- University Paris-Saclay, GRADES, Faculty of Pharmacy, 5 rue Jean-Baptiste Clément, 92290Châtenay-Malabry, France
- Pharmacy Department, Georges Pompidou European Hospital, AP-HP, 20 rue Leblanc, 75015Paris, France
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Carew RM, Errickson D. An Overview of 3D Printing in Forensic Science: The Tangible Third-Dimension. J Forensic Sci 2020; 65:1752-1760. [PMID: 32401341 DOI: 10.1111/1556-4029.14442] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 04/01/2020] [Accepted: 04/01/2020] [Indexed: 11/28/2022]
Abstract
There has been a rapid development and utilization of three-dimensional (3D) printing technologies in engineering, health care, and dentistry. Like many technologies in overlapping disciplines, these techniques have proved to be useful and hence incorporated into the forensic sciences. Therefore, this paper describes how the potential of using 3D printing is being recognized within the various sub-disciplines of forensic science and suggests areas for future applications. For instance, the application can create a permanent record of an object or scene that can be used as demonstrative evidence, preserving the integrity of the actual object or scene. Likewise, 3D printing can help with the visualization of evidential spatial relationships within a scene and increase the understanding of complex terminology within a courtroom. However, while the application of 3D printing to forensic science is beneficial, currently there is limited research demonstrated in the literature and a lack of reporting skewing the visibility of the applications. Therefore, this article highlights the need to create good practice for 3D printing across the forensic science process, the need to develop accurate and admissible 3D printed models while exploring the techniques, accuracy and bias within the courtroom, and calls for the alignment of future research and agendas perhaps in the form of a specialist working group.
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Affiliation(s)
- Rachael M Carew
- Department of Security and Crime Science, University College London, 35 Tavistock Square, London, WC1H 9EZ, U.K.,Centre for the Forensic Sciences, University College London, 35 Tavistock Square, London, WC1H 9EZ, U.K
| | - David Errickson
- Cranfield Forensic Institute, Cranfield University, Defence Academy of the United Kingdom, Shrivenham, SN6 8LA, U.K
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Carew RM, Morgan RM, Rando C. Experimental assessment of the surface quality of 3D printed bones. AUST J FORENSIC SCI 2020. [DOI: 10.1080/00450618.2020.1759684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Rachael M. Carew
- Department of Security and Crime Science, University College London, London, UK
- Centre for the Forensic Sciences, University College London, London, UK
- Institute of Archaeology, University College London, London, UK
| | - Ruth M. Morgan
- Department of Security and Crime Science, University College London, London, UK
- Centre for the Forensic Sciences, University College London, London, UK
| | - Carolyn Rando
- Institute of Archaeology, University College London, London, UK
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Weadock WJ, Heisel CJ, Kahana A, Kim J. Use of 3D Printed Models to Create Molds for Shaping Implants for Surgical Repair of Orbital Fractures. Acad Radiol 2020; 27:536-542. [PMID: 31466890 DOI: 10.1016/j.acra.2019.06.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 06/10/2019] [Accepted: 06/12/2019] [Indexed: 10/26/2022]
Abstract
RATIONALE AND OBJECTIVES Surgical repair of an isolated orbital fracture requires anatomically accurate implant shape and placement. We describe a three-dimensional (3D) printing technique to customize the shape of commercially available absorbable implants. MATERIALS AND METHODS We reviewed our early experience with three cases in which 3D printed molds were utilized for fracture repair. The institution's medical records were reviewed to assess operative time for orbital floor blow-out fracture repairs. Thin section computed tomography (CT) images were loaded into a clinical 3D visualization software, and stereolithography models were created. The models were loaded into stereolithography editing software in which the nonfractured side was mirrored and overlaid with the fractured side. Sterilizable 3D printed molds were created using the fracture images as well as the virtual mirrored images. The molds were taken to the operating room and used to shape a customized orbital implant for fracture repair, using off-the-shelf bioabsorbable implants. RESULTS The three patients treated using 3D printed molds had excellent outcomes, with decreased postoperative edema and rapid resolution of ocular misalignment/strabismus. Surgical times were decreased from an average of 93.3 minutes using standard implants to 48.3 minutes following adoption of 3D printed molds. CONCLUSION Three-dimensional printed models can be used to create molds for shaping bioabsorbable implants for customized surgical repair, improving fit, reducing tissue handling and postoperative edema, and reducing surgical times.
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Foresti R, Rossi S, Pinelli S, Alinovi R, Sciancalepore C, Delmonte N, Selleri S, Caffarra C, Raposio E, Macaluso G, Macaluso C, Freyrie A, Miragoli M, Perini P. In-vivo vascular application via ultra-fast bioprinting for future 5D personalised nanomedicine. Sci Rep 2020; 10:3205. [PMID: 32081937 PMCID: PMC7035336 DOI: 10.1038/s41598-020-60196-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 02/04/2020] [Indexed: 01/22/2023] Open
Abstract
The design of 3D complex structures enables new correlation studies between the engineering parameters and the biological activity. Moreover, additive manufacturing technology could revolutionise the personalised medical pre-operative management due to its possibility to interplay with computer tomography. Here we present a method based on rapid freeze prototyping (RFP) 3D printer, reconstruction cutting, nano dry formulation, fast freeze gelation, disinfection and partial processes for the 5D digital models functionalisation. We elaborated the high-resolution computer tomography scan derived from a complex human peripheral artery and we reconstructed the 3D model of the vessel in order to obtain and verify the additive manufacturing processes. Then, based on the drug-eluting balloon selected for the percutaneous intervention, we reconstructed the biocompatible eluting-freeform coating containing 40 nm fluorescent nanoparticles (NPs) by means of RFP printer and we tested the in-vivo feasibility. We introduced the NPs-loaded 5D device in a rat's vena cava. The coating dissolved in a few minutes releasing NPs which were rapidly absorbed in vascular smooth muscle cell (VSMC) and human umbilical vein endothelial cell (HUVEC) in-vitro. We developed 5D high-resolution self-dissolving devices incorporating NPs with the perspective to apply this method to the personalised medicine.
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Affiliation(s)
- Ruben Foresti
- Department of Medicine and Surgery, University of Parma, via Gramsci 14, 43126, Parma, IT, Italy.
- CERT, Centre of Excellence for Toxicology Research, via Gramsci 14, 43126, Parma, IT, Italy.
| | - Stefano Rossi
- Department of Medicine and Surgery, University of Parma, via Gramsci 14, 43126, Parma, IT, Italy
- CERT, Centre of Excellence for Toxicology Research, via Gramsci 14, 43126, Parma, IT, Italy
| | - Silvana Pinelli
- Department of Medicine and Surgery, University of Parma, via Gramsci 14, 43126, Parma, IT, Italy
| | - Rossella Alinovi
- Department of Medicine and Surgery, University of Parma, via Gramsci 14, 43126, Parma, IT, Italy
| | - Corrado Sciancalepore
- Department of Engineering and Architecture, University of Parma, Parco Area delle Scienze, 43124, Parma, IT, Italy
| | - Nicola Delmonte
- Department of Engineering and Architecture, University of Parma, Parco Area delle Scienze, 43124, Parma, IT, Italy
| | - Stefano Selleri
- Department of Engineering and Architecture, University of Parma, Parco Area delle Scienze, 43124, Parma, IT, Italy
| | - Cristina Caffarra
- Department of Medicine and Surgery, University of Parma, via Gramsci 14, 43126, Parma, IT, Italy
| | - Edoardo Raposio
- Department of Medicine and Surgery, University of Parma, via Gramsci 14, 43126, Parma, IT, Italy
- Unit of Surgical Sciences, Azienda Ospedaliero-Universitaria, via Gramsci 14, 43126, Parma, IT, Italy
| | - Guido Macaluso
- Department of Medicine and Surgery, University of Parma, via Gramsci 14, 43126, Parma, IT, Italy
- Centro Universitario di Odontoiatria, University of Parma, Via Gramsci 14, 43126, Parma, IT, Italy
- IMEM-CNR National Research Council, Parco Area delle Scienze 37/A, 43124, Parma, IT, Italy
| | - Claudio Macaluso
- Department of Medicine and Surgery, University of Parma, via Gramsci 14, 43126, Parma, IT, Italy
| | - Antonio Freyrie
- Department of Medicine and Surgery, University of Parma, via Gramsci 14, 43126, Parma, IT, Italy
- Unit of Vascular Surgery, Azienda Ospedaliero-Universitaria, via Gramsci 14, 43126, Parma, IT, Italy
| | - Michele Miragoli
- Department of Medicine and Surgery, University of Parma, via Gramsci 14, 43126, Parma, IT, Italy
- CERT, Centre of Excellence for Toxicology Research, via Gramsci 14, 43126, Parma, IT, Italy
- Humanitas Clinical and Research Center - IRCCS, via Manzoni 56, 20089, Rozzano Milan, IT, Italy
| | - Paolo Perini
- Department of Medicine and Surgery, University of Parma, via Gramsci 14, 43126, Parma, IT, Italy
- Unit of Vascular Surgery, Azienda Ospedaliero-Universitaria, via Gramsci 14, 43126, Parma, IT, Italy
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Ballard DH, Tappa K, Boyer CJ, Jammalamadaka U, Hemmanur K, Weisman JA, Alexander JS, Mills DK, Woodard PK. Antibiotics in 3D-printed implants, instruments and materials: benefits, challenges and future directions. JOURNAL OF 3D PRINTING IN MEDICINE 2019; 3:83-93. [PMID: 31258936 PMCID: PMC6587109 DOI: 10.2217/3dp-2019-0007] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 04/23/2019] [Indexed: 04/17/2023]
Abstract
3D printing is an additive manufacturing technology, which permits innovative approaches for incorporating antibiotics into 3D printed constructs. Antibiotic-incorporating applications in medicine have included medical implants, prostheses, along with procedural and surgical instruments. 3D-printed antibiotic-impregnated devices offer the advantages of increased surface area for drug distribution, sequential layers of antibiotics produced through layer-by-layer fabrication, and the ability to rapidly fabricate constructs based on patient-specific anatomies. To date, fused deposition modeling has been the main 3D printing method used to incorporate antibiotics, although inkjet and stereolithography techniques have also been described. This review offers a state-of-the-art summary of studies that incorporate antibiotics into 3D-printed constructs and summarizes the rationale, challenges, and future directions for the potential use of this technology in patient care.
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Affiliation(s)
- David H Ballard
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, MO 63110, USA
- Author for correspondence: Tel.: +1 314 226 5464; Fax: +1 314 747 4671;
| | - Karthik Tappa
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, MO 63110, USA
| | - Christen J Boyer
- Department of Molecular & Cellular Physiology, Louisiana State University Health Shreveport, LA 71103, USA
| | - Udayabhanu Jammalamadaka
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, MO 63110, USA
| | - Kavya Hemmanur
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, MO 63110, USA
| | - Jeffery A Weisman
- University of Illinois at Chicago Occupational Medicine, Chicago, IL 60612, USA
| | - Jonathan S Alexander
- Department of Molecular & Cellular Physiology, Louisiana State University Health Shreveport, LA 71103, USA
| | - David K Mills
- Department of Biomedical Engineering, Louisiana Tech University, Ruston, LA 71272, USA
| | - Pamela K Woodard
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, MO 63110, USA
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Weisman JA, Ballard DH, Jammalamadaka U, Tappa K, Sumerel J, D'Agostino HB, Mills DK, Woodard PK. 3D Printed Antibiotic and Chemotherapeutic Eluting Catheters for Potential Use in Interventional Radiology: In Vitro Proof of Concept Study. Acad Radiol 2019; 26:270-274. [PMID: 29801697 DOI: 10.1016/j.acra.2018.03.022] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Revised: 03/11/2018] [Accepted: 03/23/2018] [Indexed: 01/15/2023]
Abstract
RATIONALE AND OBJECTIVES Additive manufacturing may be used as a form of personalized medicine in interventional radiology by allowing for the creation of customized bioactive constructs such as catheters that can act as a form of localized drug delivery. The purpose of the present in vitro study was to use three-dimensional (3D) printing to construct bioactive-laden bioabsorbable catheters impregnated with antibiotics and chemotherapeutics. MATERIALS AND METHODS Polylactic acid bioplastic pellets were coated with the powdered bioactive compounds gentamicin sulfate (GS) or methotrexate (MTX) to incorporate these drugs into the 3D printed constructs. The pellets were then extruded into drug-impregnated filament for fused deposition modeling 3D printing. Computer-aided design files were generated in the shapes of 14-F catheters. Scanning electron microscope imaging was used to visualize the presence of the additive powders on the surface of the printed constructs. Elution profiles were run on the antibiotic-laden catheter and MTX-laden catheters. Antibiotic-laden catheters were tested on bacterial broth and plate cultures. RESULTS Both GS and MTX catheter constructs had sustained drug release up to the 5-day limit of testing. The 3D printed GS-enhanced catheters inhibited all bacterial growth in broth cultures and had an average zone of inhibition of 858 ± 118 mm2 on bacterial plates, whereas control catheters had no effect. CONCLUSION The 3D printing manufacturing method to create instruments in percutaneous procedures is feasible. Further in vivo studies will substantiate these findings.
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Carew RM, Morgan RM, Rando C. A Preliminary Investigation into the Accuracy of 3D Modeling and 3D Printing in Forensic Anthropology Evidence Reconstruction. J Forensic Sci 2018; 64:342-352. [PMID: 30296344 PMCID: PMC7380002 DOI: 10.1111/1556-4029.13917] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 09/03/2018] [Accepted: 09/04/2018] [Indexed: 01/09/2023]
Abstract
There is currently no published empirical evidence‐base demonstrating 3D printing to be an accurate and reliable tool in forensic anthropology, despite 3D printed replicas being exhibited as demonstrative evidence in court. In this study, human bones (n = 3) scanned using computed tomography were reconstructed as virtual 3D models (n = 6), and 3D printed using six commercially available printers, with osteometric data recorded at each stage. Virtual models and 3D prints were on average accurate to the source bones, with mean differences from −0.4 to 1.2 mm (−0.4% to 12.0%). Interobserver differences ranged from −5.1 to 0.7 mm (−5.3% to 0.7%). Reconstruction and modeling parameters influenced accuracy, and prints produced using selective laser sintering (SLS) were most consistently accurate. This preliminary investigation into virtual modeling and 3D printer capability provides a novel insight into the accuracy of 3D printing osteological samples and begins to establish an evidence‐base for validating 3D printed bones as demonstrative evidence.
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Affiliation(s)
- Rachael M Carew
- Department of Security and Crime Science, University College London, 35 Tavistock Square, London, U.K, WC1H 9EZ.,Centre for the Forensic Sciences, University College London, 35 Tavistock Square, London, U.K, WC1H 9EZ.,Institute of Archaeology, University College London, 31-34 Gordon Square, London, U.K, WC1H 0PY
| | - Ruth M Morgan
- Department of Security and Crime Science, University College London, 35 Tavistock Square, London, U.K, WC1H 9EZ.,Centre for the Forensic Sciences, University College London, 35 Tavistock Square, London, U.K, WC1H 9EZ
| | - Carolyn Rando
- Institute of Archaeology, University College London, 31-34 Gordon Square, London, U.K, WC1H 0PY
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Pope MC, Ballard DH, Sticker AL, Adams S, Ahuja C, D’Agostino HB. Fluid Flow Patterns Through Drainage Catheters: Clinical Observations in 99 Patients. THE JOURNAL OF THE LOUISIANA STATE MEDICAL SOCIETY : OFFICIAL ORGAN OF THE LOUISIANA STATE MEDICAL SOCIETY 2018; 170:146-150. [PMID: 30686841 PMCID: PMC6347390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
PURPOSE To describe patterns of fluid flow through locking pigtail and biliary catheters in patients that underwent biliary and abdominopelvic fluid drainage. METHODS Contrast movement through catheter sideholes in pigtail and biliary catheters was evaluated retrospectively using sinograms and cholangiograms at 7-10 days post insertion. Dilute contrast injected through the catheter was evaluated by following flow through the catheter shaft and exit from side holes within the body cavity. Exit of contrast through side holes was appreciated and recorded. Included patients underwent biliary and abdominopelvic fluid drainage using 10.2-F catheters. Exclusion criteria included masking of contrast flow through sideholes by catheter angulation, contrast pooling or other imaging artifacts. RESULTS A total of 99 patients meeting inclusion criteria underwent evaluation of contrast flow through pigtail (n = 81) and biliary (n = 18) catheters. For pigtail and biliary catheters, 91/99 cases (91.9%) showed contrast exiting the catheter from only the sidehole located most proximally to the catheter hub. In 6/99 cases (6.1%) contrast exited no further than the second most proximal sidehole. In 2/99 cases (2.0%) contrast exited no further than the third most proximal sidehole. In no cases was contrast observed exiting from distal sideholes beyond the third most proximal sidehole. CONCLUSION Retrograde contrast injection through catheters suggests that the majority of the contribution to total output in drainage catheters comes from the most proximal side hole. Contribution of distal side holes to total drainage is negligible or non-existent, therefore the distal segment of the catheter may be considered non-functional.
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Affiliation(s)
- Matthew C. Pope
- Department of Radiology, Mayo Clinic. 200 1st St SW, Rochester, MN 55902
| | - David H. Ballard
- Mallinckrodt Institute of Radiology, Washington University School of Medicine. 510 S. Kingshighway Blvd, St. Louis, Missouri, 63110
| | - Alan L. Sticker
- School of Medicine; Louisiana State University Health Shreveport. 1501 Kings Highway, Shreveport, Louisiana, 71130
| | - Scott Adams
- Department of Radiology; Louisiana State University Health Shreveport. 1501 Kings Highway, Shreveport, Louisiana, 71130
| | - Chaitanya Ahuja
- Department of Radiology; Louisiana State University Health Shreveport. 1501 Kings Highway, Shreveport, Louisiana, 71130
| | - Horacio B. D’Agostino
- Department of Radiology; Louisiana State University Health Shreveport. 1501 Kings Highway, Shreveport, Louisiana, 71130
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Boyer CJ, Ballard DH, Yun JW, Xiao AY, Weisman JA, Barzegar M, Alexander JS. Three-Dimensional Printing of Cell Exclusion Spacers (CES) for Use in Motility Assays. Pharm Res 2018; 35:155. [PMID: 29869098 PMCID: PMC6434525 DOI: 10.1007/s11095-018-2431-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 05/15/2018] [Indexed: 10/14/2022]
Abstract
PURPOSE Cell migration/invasion assays are widely used in commercial drug discovery screening. 3D printing enables the creation of diverse geometric restrictive barrier designs for use in cell motility studies, permitting on-demand assays. Here, the utility of 3D printed cell exclusion spacers (CES) was validated as a cell motility assay. METHODS A novel CES fit was fabricated using 3D printing and customized to the size and contour of 12 cell culture plates including 6 well plates of basal human brain vascular endothelial (D3) cell migration cells compared with 6 well plates with D3 cells challenged with 1uM cytochalasin D (Cyto-D), an F-actin anti-motility drug. Control and Cyto-D treated cells were monitored over 3 days under optical microscopy. RESULTS Day 3 cell migration distance for untreated D3 cells was 1515.943μm ± 10.346μm compared to 356.909μm ± 38.562μm for the Cyt-D treated D3 cells (p < 0.0001). By day 3, untreated D3 cells reached confluency and completely filled the original voided spacer regions, while the Cyt-D treated D3 cells remained significantly less motile. CONCLUSIONS Cell migration distances were significantly reduced by Cyto-D, supporting the use of 3D printing for cell exclusion assays. 3D printed CES have great potential for studying cell motility, migration/invasion, and complex multi-cell interactions.
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Affiliation(s)
- Christen J Boyer
- Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - David H Ballard
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Missouri, USA
| | - Jungmi W Yun
- Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Adam Y Xiao
- Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Jeffery A Weisman
- Department of Anesthesiology, Washington University School of Medicine, St Louis, Missouri, USA
| | - Mansoureh Barzegar
- Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Jonathan Steven Alexander
- Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA.
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Rosenkrantz AB. Leveraging Mega-trends in Medicine Today to Enhance Patient Care in Radiology Tomorrow. Acad Radiol 2018; 25:1-2. [PMID: 29174204 DOI: 10.1016/j.acra.2017.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 10/17/2017] [Indexed: 10/18/2022]
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