Name: evaluating regional pulmonary deposition using patient-specific 3d printed lung models
Uploaded: 2020-11-11T13:00:00.000+00:00
Duration: 7 min 56 s
Description: Watch this Scientific Journal Video about Evaluating Regional Pulmonary Deposition using Patient-Specific 3D Printed Lung Models at JoVE.com

Los autores agradecen al profesor Yu Feng, a la Dra. Jenna Briddell, Ian Woodward y Lucas Attia por sus útiles discusiones.

<ol>
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El dispositivo actual de última generación para pruebas farmacéuticas pulmonares de una dosis completa de inhalación es el Next Generator Impactr (NGI), que mide el diámetro aerodinámico de un aerosol4. Estos datos de tamaño se utilizan entonces para predecir la generación pulmonar a la que el aerosol se depositará en función de una correlación desarrollada para un macho adulto sanode 11años. Desafortunadamente, este método es limitado en su capacidad para eval...

Muchas enfermedades pulmonares como el cáncer de pulmón y la enfermedad pulmonar obstructiva crónica (EPOC) presentan diferencias regionales en las características de la enfermedad; sin embargo, hay una falta de técnicas terapéuticas disponibles para el tratamiento de fármacos dirigidos a sólo las regiones enfermas del pulmón1. Múltiples modelos dinámicos de fluido computacional (CFD) han demostrado que es posible modular los perfiles de deposición de fármacos mediante la identificación de agilizaciónes específicas en el pulmón2,3. El desarrollo tanto de inhaladores como de adaptadores de tubo endotraqueal (ET) con capacidades de segmentación regionales está en marcha en nuestro laboratorio para controlar la distribución de aerosoles a las regiones pulmonares enfermas. La extensión de estos principios al uso clínico está limitada por la capacidad actual de pruebas preclínicas. La ubicación precisa de un medicamento deposita dentro del pulmón se sabe que es el mejor predictor de eficacia; sin embargo, las evaluaciones farmacéuticas actuales de las terapias inhalables se predicen con mayor frecuencia utilizando correlaciones in vitro-in vivo del tamaño de las partículas para limitarse a aproximar la deposición4. Esta técnica no permite ningún análisis espacial para determinar los efectos de diferentes geometrías de las vías respiratorias en la distribución regional a través de los diversos lóbulos del pulmón. Además, esta prueba carece de geometrías pulmonares anatómicamente precisas, que los investigadores han demostrado que pueden tener un impacto significativo en los perfiles de deposición5. Se han hecho algunos esfuerzos para incorporar geometrías pulmonares específicas del paciente en los protocolos de prueba a través de la adición de las vías respiratorias superiores; sin embargo, la mayoría de estos enfoques muestra la entrega de aerosoles a varias generaciones del pulmón en lugar de cada lóbulo pulmonar6,7,8. El siguiente protocolo presenta un método de alto rendimiento para generar modelos pulmonares específicos del paciente con capacidad para cuantificar la deposición relativa de partículas en cada uno de los cinco lóbulos del pulmón9.
Los pulmones modelo anatómicamente precisos son generados por la impresión 3D de tomografía computarizada (TC) del paciente. Cuando se utiliza junto con un sistema de flujo fácilmente ensamblado, los caudales relativos a través de cada uno de los lóbulos del pulmón modelo se pueden controlar y adaptar de forma independiente para imitar los de diferentes estados de demografía y/o enfermedad de los pacientes. Con este método, los investigadores pueden probar la eficacia de los métodos terapéuticos potenciales en una geometría pulmonar relevante y correlacionar el rendimiento de cada método con la progresión de la morfología enferma. Aquí, dos diseños de dispositivos desarrollados en nuestro laboratorio son probados por su capacidad para aumentar la deposición en un lóbulo pulmonar deseado mediante el control de la ubicación de la liberación de aerosoles en la boca o la tráquea. Este protocolo también tiene el potencial de afectar significativamente el desarrollo de procedimientos personalizados para los pacientes facilitando la rápida predicción de la eficacia del tratamiento en un pulmón modelo específico de los datos de la tomografía computarizada de ese paciente.

<table><tbody><tr><td>1/4&quot; Plastic Barbed Tube Fitting</td><td>McMaster Carr</td><td>5372K111</td><td></td></tr><tr><td>10 um Filter Paper</td><td>Fisher</td><td>1093-110</td><td></td></tr><tr><td>1um Fluorescent Polystyrene Particles</td><td>Polysciences</td><td>15702-10</td><td></td></tr><tr><td>1um Non-Fluorescent Polystyrene Particles</td><td>Polysciences</td><td>8226</td><td></td></tr><tr><td>2-Propanol</td><td>Fisher</td><td>A516-4</td><td>Referred to in protocol as &quot;IPA&quot;</td></tr><tr><td>3/8&quot; Plastic Barbed Tube Fitting</td><td>McMaster Carr</td><td>5372K117</td><td></td></tr><tr><td>Air Flow Meter (1 - 280 mL/min)</td><td>McMaster Carr</td><td>41695K32</td><td>Referred to in protocol as &quot;flow meter&quot;</td></tr><tr><td>Carbon M1 3D Printer</td><td>Carbon 3D</td><td></td><td>https://www.carbon3d.com/, Associated software referred to in protocol as &quot;slicing software&quot;</td></tr><tr><td>Collison Jet Nebulizer</td><td>CH Technologies</td><td>ARGCNB0008 (CN-25)</td><td>6 Jet MRE style horizontal collision with glass jar, Referred to in protocol as &quot;nebulizer&quot;, http://chtechusa.com/Manuals/MRE_Collison_Manual.pdf</td></tr><tr><td>Convection Oven</td><td>Yamato</td><td>DKN602</td><td></td></tr><tr><td>Copley Critical Flow Controller TPK2000 Reve 120V</td><td>MSP Corp</td><td>0001-01-9810</td><td>Referred to in protocol as &quot;flow controller&quot;</td></tr><tr><td>Copley High Capacity Pump Model HCP5</td><td>MSP Corp</td><td>0001-01-9982</td><td>Referred to in protocol as &quot;vacuum pump&quot;</td></tr><tr><td>Cytation</td><td>BioTek</td><td>CYT5MPV</td><td>Multifunctional Spectrophotometer/Fluorescent imager equiped with 4x/20x/40x objectives and DAPI/GFP/TexasRed laser/filter cubes</td></tr><tr><td>EPU40 Resin</td><td>Carbon 3D</td><td></td><td>https://www.carbon3d.com/materials/epu-elastomeric-polyurethane/, Referred to in protocol as &quot;soft resin&quot;</td></tr><tr><td>Filter for vacuum pump</td><td>Whatman</td><td>6722-5000</td><td></td></tr><tr><td>Flow Meter Model DFM 2000</td><td>MSP Corp</td><td>0001-01-8764</td><td>Referred to in protocol as &quot;electronic flow meter&quot;</td></tr><tr><td>ImageJ Software</td><td>ImageJ</td><td></td><td>https://imagej.nih.gov/ij/download.html</td></tr><tr><td>Inline Air Flow Control Valve (Push-to-Connect)</td><td>McMaster Carr</td><td>62005K333</td><td>Referred to in protocol as &quot;valve&quot;</td></tr><tr><td>Inline Filter Devices</td><td>Whatman</td><td>WHA67225000</td><td></td></tr><tr><td>Marine-Grade Plywood Sheet</td><td>McMaster Carr</td><td>62005K333</td><td>Referred to in protocol as &quot;wooden board&quot;</td></tr><tr><td>Materialise Mimics Software</td><td>Materialise</td><td></td><td>https://www.materialise.com/en/medical/mimics-innovation-suite, Referred to in protocol as &quot;CT scan software&quot;</td></tr><tr><td>Meshmixer Software</td><td>Autodesk</td><td></td><td>http://www.meshmixer.com/, Referred to in protocol as &quot;mesh editing software&quot;</td></tr><tr><td>Methanol</td><td>Fisher</td><td>A454-4</td><td></td></tr><tr><td>Opticure LED Cube</td><td>APM Technica</td><td>102843</td><td>Referred to in protocol as &quot;UV oven&quot;</td></tr><tr><td>PR25 Resin</td><td>Carbon 3D</td><td></td><td>https://www.carbon3d.com/materials/uma-urethanemethacrylate, /Referred to in protocol as &quot;hard resin&quot;</td></tr><tr><td>PVC Tube for Chemicals</td><td>McMaster Carr</td><td>5231K161</td><td>1/4&quot; ID</td></tr><tr><td>Screws</td><td></td><td></td><td></td></tr><tr><td>SolidWorks Software</td><td>Dassault Syst&amp;egrave;mes&amp;nbsp;SolidWorks Corporation</td><td></td><td>https://www.solidworks.com/, Referred to in protocol as &quot;3D modeling software&quot;</td></tr><tr><td>Straight Flow Rectangular Manifold</td><td>McMaster Carr</td><td>1125T31</td><td></td></tr><tr><td>Tubing to Flow Controller</td><td>McMaster Carr</td><td>5233K65</td><td>3/8&quot; ID</td></tr><tr><td>Wire</td><td></td><td></td><td></td></tr></tbody></table>

evaluating regional pulmonary deposition using patient-specific 3d printed lung models

El desarrollo de terapias específicas para enfermedades pulmonares está limitado por la disponibilidad de métodos de prueba preclínicos con la capacidad de predecir el suministro regional de aerosoles. Aprovechando la impresión 3D para generar modelos pulmonares específicos del paciente, delineamos el diseño de una configuración experimental in vitro de alto rendimiento para cuantificar la deposición pulmonar lobular. Este sistema está fabricado con una combinación de componentes impresos 3D y disponibles comercialmente y permite controlar de forma independiente el caudal a través de cada lóbulo del pulmón. La entrega de aerosoles fluorescentes a cada lóbulo se mide mediante microscopía de fluorescencia. Este protocolo tiene el potencial de promover el crecimiento de la medicina personalizada para enfermedades respiratorias a través de su capacidad para modelar una amplia gama de estados de demografía y enfermedades de los pacientes. Tanto la geometría del modelo pulmonar impreso en 3D como el ajuste del perfil de flujo de aire se pueden modular fácilmente para reflejar datos clínicos de pacientes con diferentes edades, raza y género. Los dispositivos de administración de fármacos clínicamente relevantes, como el tubo endotraqueal que se muestra aquí, se pueden incorporar a la configuración de pruebas para predecir con mayor precisión la capacidad de un dispositivo para dirigir el parto terapéutico a una región enferma del pulmón. La versatilidad de esta configuración experimental permite personalizarla para reflejar multitud de condiciones de inhalación, mejorando el rigor de las pruebas terapéuticas preclínicas.

Las partículas en este rango de tamaño (1-5 μm) y las condiciones de flujo (1-10 L/min) siguen las líneas de flujo de fluidos basadas tanto en su número teórico de Stokes como en los datos in vivo; por lo tanto, en ausencia de un dispositivo de entrega dirigido, se espera que las partículas liberadas en el modelo pulmonar se depositen de acuerdo con el porcentaje de flujo de aire total desviado a cada lóbulo. Las cantidades relativas de administración de partículas a cada lóbulo se pueden comparar con los dato...

Watch this Scientific Journal Video about Evaluating Regional Pulmonary Deposition using Patient-Specific 3D Printed Lung Models at JoVE.com

Evaluating Regional Pulmonary Deposition using Patient-Specific 3D Printed Lung Models

Presentamos un método in vitro de alto rendimiento para cuantificar la deposición pulmonar regional a nivel del lóbulo utilizando modelos pulmonares impresos en 3D derivados de tomografía computarizada con perfiles de flujo de aire ajustable.

Evaluación de la deposición pulmonar regional utilizando modelos pulmonares impresos en 3D específicos del paciente

Development of targeted therapies for pulmonary diseases is limited by the availability of preclinical testing methods with the ability to predict ...

evaluating-regional-pulmonary-deposition-using-patient-specific-3d

Research

JoVE Journal

Bioengineering

4.2K vistas.  University of Delaware. Presentamos un método in vitro de alto rendimiento para cuantificar la deposición pulmonar regional a nivel del lóbulo utilizando modelos pulmonares impresos en 3D derivados de tomografía computarizada con perfiles de flujo de aire ajustable.

Video: Evaluating Regional Pulmonary Deposition using Patient-Specific 3D Printed Lung Models

A Combined 3D Tissue Engineered In Vitro/In Silico Lung Tumor Model for Predicting Drug Effectiveness in Specific Mutational Backgrounds

In the present study, we combined an in vitro 3D lung tumor model with an in silico model to optimize predictions of drug response based on a specific mutational background. The model is generated on a decellularized porcine scaffold that reproduces tissue-specific characteristics regarding extracellular matrix composition and architecture including the basement membrane. We standardized a protocol that allows artificial tumor tissue generation within 14 days including three days of drug treatment. Our article provides several detailed descriptions of 3D read-out screening techniques like the determination of the proliferation index Ki67 staining&#39;s, apoptosis from supernatants by M30-ELISA and assessment of epithelial to mesenchymal transition (EMT), which are helpful tools for evaluating the effectiveness of therapeutic compounds. We could show compared to 2D culture a reduction of proliferation in our 3D tumor model that is related to the clinical situation. Despite of this lower proliferation, the model predicted EGFR-targeted drug responses correctly according to the biomarker status as shown by comparison of the lung carcinoma cell lines HCC827 (EGFR -mutated, KRAS wild-type) and A549 (EGFR wild-type, KRAS-mutated) treated with the tyrosine-kinase inhibitor (TKI) gefitinib. To investigate drug responses of more advanced tumor cells, we induced EMT by long-term treatment with TGF-beta-1 as assessed by vimentin/pan-cytokeratin immunofluorescence staining. A flow-bioreactor was employed to adjust culture to physiological conditions, which improved tissue generation. Furthermore, we show the integration of drug responses upon gefitinib treatment or TGF-beta-1 stimulation - apoptosis, proliferation index and EMT - into a Boolean in silico model. Additionally, we explain how drug responses of tumor cells with a specific mutational background and counterstrategies against resistance can be predicted. We are confident that our 3D in vitro approach especially with its in silico expansion provides an additional value for preclinical drug testing in more realistic conditions than in 2D cell culture.

A Combined 3D Tissue Engineered In Vitro/In Silico Lung Tumor Model for Predicting Drug Effectiveness in Specific Mutational Backgrounds

We present a three-dimensional (3D) lung cancer model based on a biological collagen scaffold to study sensitivity towards non-small-cell-lung-cancer-(NSCLC)-targeted therapies. We demonstrate different read-out techniques to determine the proliferation index, apoptosis and epithelial-mesenchymal transition (EMT) status. Collected data are integrated into an in silico model for prediction of drug sensitivity.

Un Tejido Combinada 3D Diseñado<em&gt; In Vitro</em&gt; /<em&gt; In silico</em&gt; Modelo de tumor de pulmón para la predicción de la eficacia de drogas en Fondos Específicos mutacional

In the present study, we combined an in vitro 3D lung tumor model with an in silico model to optimize predictions of drug response based on a specific ...

Investigación

Bioingeniería

A 3D Human Lung Tissue Model for Functional Studies on Mycobacterium tuberculosis Infection

Tuberculosis (TB) still holds a major threat to the health of people worldwide, and there is a need for cost-efficient but reliable models to help us understand the disease mechanisms and advance the discoveries of new treatment options. In vitro cell cultures of monolayers or co-cultures lack the three-dimensional (3D) environment and tissue responses. Herein, we describe an innovative in vitro model of a human lung tissue, which holds promise to be an effective tool for studying the complex events that occur during infection with Mycobacterium tuberculosis (M. tuberculosis). The 3D tissue model consists of tissue-specific epithelial cells and fibroblasts, which are cultured in a matrix of collagen on top of a porous membrane. Upon air exposure, the epithelial cells stratify and secrete mucus at the apical side. By introducing human primary macrophages infected with M. tuberculosis to the tissue model, we have shown that immune cells migrate into the infected-tissue and form early stages of TB granuloma. These structures recapitulate the distinct feature of human TB, the granuloma, which is fundamentally different or not commonly observed in widely used experimental animal models. This organotypic culture method enables the 3D visualization and robust quantitative analysis that provides pivotal information on spatial and temporal features of host cell-pathogen interactions. Taken together, the lung tissue model provides a physiologically relevant tissue micro-environment for studies on TB. Thus, the lung tissue model has potential implications for both basic mechanistic and applied studies. Importantly, the model allows addition or manipulation of individual cell types, which thereby widens its use for modelling a variety of infectious diseases that affect the lungs.

A 3D Human Lung Tissue Model for Functional Studies on Mycobacterium tuberculosis Infection

Human tuberculosis infection is a complex process, which is difficult to model in vitro. Here we describe a novel 3D human lung tissue model that recapitulates the dynamics that occur during infection, including the migration of immune cells and early granuloma formation in a physiological environment.

Un modelo de tejido 3D Pulmón humano de Estudios funcionales en<em&gt; Mycobacterium tuberculosis</em&gt; Infección

Tuberculosis (TB) still holds a major threat to the health of people worldwide, and there is a need for cost-efficient but reliable models to help us ...

Inmunología e Infección

Generation of 3D Whole Lung Organoids from Induced Pluripotent Stem Cells for Modeling Lung Developmental Biology and Disease

Human lung development and disease has been difficult to study due to the lack of biologically relevant in vitro model systems. Human induced pluripotent stem cells (hiPSCs) can be differentiated stepwise into 3D multicellular lung organoids, made of both epithelial and mesenchymal cell populations. We recapitulate embryonic developmental cues by temporally introducing a variety of growth factors and small molecules to efficiently generate definitive endoderm, anterior foregut endoderm, and subsequently lung progenitor cells. These cells are then embedded in growth factor reduced (GFR)-basement membrane matrix medium, allowing them to spontaneously develop into 3D lung organoids in response to external growth factors. These whole lung organoids (WLO) undergo early lung developmental stages including branching morphogenesis and maturation after exposure to dexamethasone, cyclic AMP and isobutylxanthine. WLOs possess airway epithelial cells expressing the markers KRT5 (basal), SCGB3A2 (club) and MUC5AC (goblet) as well as alveolar epithelial cells expressing HOPX (alveolar type I) and SP-C (alveolar type II). Mesenchymal cells are also present, including smooth muscle actin (SMA), and platelet-derived growth factor receptor A (PDGFR&#945;). iPSC derived WLOs can be maintained in 3D culture conditions for many months and can be sorted for surface markers to purify a specific cell population. iPSC derived WLOs can also be utilized to study human lung development, including signaling between the lung epithelium and mesenchyme, to model genetic mutations on human lung cell function and development, and to determine the cytotoxicity of infective agents.

The article describes step wise directed differentiation of induced pluripotent stem cells to three-dimensional whole lung organoids containing both proximal and distal epithelial lung cells along with mesenchyme.

Generación de organoides pulmonares enteros en 3D a partir de células madre pluripotentes inducidas para modelar la biología y la enfermedad del desarrollo pulmonar

Human lung development and disease has been difficult to study due to the lack of biologically relevant in vitro model systems. Human induced pluripotent ...

Biología del Desarrollo

3D Printing of Preclinical X-ray Computed Tomographic Data Sets

Three-dimensional printing allows for the production of highly detailed objects through a process known as additive manufacturing. Traditional, mold-injection methods to create models or parts have several limitations, the most important of which is a difficulty in making highly complex products in a timely, cost-effective manner.1 However, gradual improvements in three-dimensional printing technology have resulted in both high-end and economy instruments that are now available for the facile production of customized models.2 These printers have the ability to extrude high-resolution objects with enough detail to accurately represent in vivo images generated from a preclinical X-ray CT scanner. With proper data collection, surface rendering, and stereolithographic editing, it is now possible and inexpensive to rapidly produce detailed skeletal and soft tissue structures from X-ray CT data. Even in the early stages of development, the anatomical models produced by three-dimensional printing appeal to both educators and researchers who can utilize the technology to improve visualization proficiency. 3, 4 The real benefits of this method result from the tangible experience a researcher can have with data that cannot be adequately conveyed through a computer screen. The translation of pre-clinical 3D data to a physical object that is an exact copy of the test subject is a powerful tool for visualization and communication, especially for relating imaging research to students, or those in other fields. Here, we provide a detailed method for printing plastic models of bone and organ structures derived from X-ray CT scans utilizing an Albira X-ray CT system in conjunction with PMOD, ImageJ, Meshlab, Netfabb, and ReplicatorG software packages.

Using modern plastic extrusion and printing technologies, it is now possible to quickly and inexpensively produce physical models of X-ray CT data taken in a laboratory. The three -dimensional printing of tomographic data is a powerful visualization, research, and educational tool that may now be accessed by the preclinical imaging community.

Impresión 3D de Preclínica de rayos X de datos tomografía computarizada Establece

Three-dimensional printing allows for the production of highly detailed objects through a process known as additive manufacturing.  Traditional, ...

Biología

Generation of Human 3D Lung Tissue Cultures (3D-LTCs) for Disease Modeling

Translation of novel discoveries to human disease is limited by the availability of human tissue-based models of disease. Precision-cut lung slices (PCLS) used as 3D lung tissue cultures (3D-LTCs) represent an elegant and biologically highly relevant 3D cell culture model, which highly resemble in situ tissue due to their complexity, biomechanics and molecular composition. Tissue slicing is widely applied in various animal models. 3D-LTCs derived from human PCLS can be used to analyze responses to novel drugs, which might further help to better understand the mechanisms and functional effects of drugs in human tissue. The preparation of PCLS from surgically resected lung tissue samples of patients, who experienced lung lobectomy, increases the accessibility of diseased and peritumoral tissue. Here, we describe a detailed protocol for the generation of human PCLS from surgically resected soft-elastic patient lung tissue. Agarose was introduced into the bronchoalveolar space of the resectates, thus preserving lung structure and increasing the tissue&#39;s stiffness, which is crucial for subsequent slicing. 500 &#181;m thick slices were prepared from the tissue block with a vibratome. Biopsy punches taken from PCLS ensure comparable tissue sample sizes and further increase the amount of tissue samples. The generated lung tissue cultures can be applied in a variety of studies in human lung biology, including the pathophysiology and mechanisms of different diseases, such as fibrotic processes at its best at (sub-)cellular levels. The highest benefit of the 3D-LTC ex vivo model is its close representation of the in situ human lung in respect of 3D tissue architecture, cell type diversity and lung anatomy as well as the potential for assessment of tissue from individual patients, which is relevant to further develop novel strategies for precision medicine.

Generation of Human 3D Lung Tissue Cultures 3D-LTCs for Disease Modeling

Here, we present a protocol for the preparation of agarose-filled human precision-cut lung slices from resected patient tissue that are suitable for generating 3D lung tissue cultures to model human lung diseases in biological and biomedical studies.

Generación de cultivos de tejido de pulmón humano 3D (3D-LTCs) para el modelado de la enfermedad

Translation of novel discoveries to human disease is limited by the availability of human tissue-based models of disease. Precision-cut lung slices (PCLS) ...

Medicina

Development and Evaluation of 3D-Printed Cardiovascular Phantoms for Interventional Planning and Training

Catheter-based interventions are standard treatment options for cardiovascular pathologies. Therefore, patient-specific models could help training physicians&#39; wire-skills as well as improving planning of interventional procedures. The aim of this study was to develop a manufacturing process of patient-specific 3D-printed models for cardiovascular interventions.
To create a 3D-printed elastic phantom, different 3D-printing materials were compared to porcine biological tissues (i.e., aortic tissue) in terms of mechanical characteristics. A fitting material was selected based on comparative tensile tests and specific material thicknesses were defined. Anonymized contrast-enhanced CT-datasets were collected retrospectively. Patient-specific volumetric models were extracted from these datasets and subsequently 3D-printed. A pulsatile flow loop was constructed to simulate the intraluminal blood flow during interventions. Models&#39; suitability for clinical imaging was assessed by x-ray imaging, CT, 4D-MRI and (Doppler) ultrasonography. Contrast medium was used to enhance visibility in x-ray-based imaging. Different catheterization techniques were applied to evaluate the 3D-printed phantoms in physicians&#39; training as well as for pre-interventional therapy planning.
Printed models showed a high printing resolution (~30 &#181;m) and mechanical properties of the chosen material were comparable to physiological biomechanics. Physical and digital models showed high anatomical accuracy when compared to the underlying radiological dataset. Printed models were suitable for ultrasonic imaging as well as standard x-rays. Doppler ultrasonography and 4D-MRI displayed flow patterns and landmark characteristics (i.e., turbulence, wall shear stress) matching native data. In a catheter-based laboratory setting, patient-specific phantoms were easy to catheterize. Therapy planning and training of interventional procedures on challenging anatomies (e.g., congenital heart disease (CHD)) was possible.
Flexible patient-specific cardiovascular phantoms were 3D-printed, and the application of common clinical imaging techniques was possible. This new process is ideal as a training tool for catheter-based (electrophysiological) interventions and can be used in patient-specific therapy planning.

Here we present development of a mock circulation setup for multimodal therapy evaluation, pre-interventional planning, and physician-training on cardiovascular anatomies. With the application of patient-specific tomographic scans, this setup is ideal for therapeutic approaches, training, and education in individualized medicine.

Desarrollo y evaluación de fantasmas cardiovasculares impresos en 3D para la planificación y el entrenamiento intervencionista

Catheter-based interventions are standard treatment options for cardiovascular pathologies. Therefore, patient-specific models could help training ...

A Personalized 3D-Printed Model for Preoperative Evaluation in Thyroid Surgery

The anatomic structure of the surgical area of thyroid cancer is complex. It is very important to comprehensively and carefully evaluate the tumor location and its relation with the capsule, trachea, esophagus, nerves, and blood vessels before operation. This paper introduces an innovative 3D-printed model establishment method based on computerized tomography (CT) DICOM images. We established a personalized 3D-printed model of the cervical thyroid surgery field for each patient who needed thyroid surgery to help clinicians evaluate the key points and difficulties of the surgery and select the operation methods of key parts as a basis. The results showed that this model is conducive to preoperative discussion and the formulation of operation strategies. In particular, as a result of the clear display of the recurrent laryngeal nerve and parathyroid gland locations in the thyroid operation field, injury to them can be avoided during surgery, the difficulty of thyroid surgery reduced, and the incidence of postoperative hypoparathyroidism and complications related to recurrent laryngeal nerve injury reduced too. Moreover, this 3D-printed model is intuitive and aids communication for the signing of informed consent by patients before surgery.

Here, a new method of establishing a personalized 3D-printed model for preoperative evaluation of thyroid surgery is proposed. It is conducive to preoperative discussion, reducing the difficulty of thyroid surgery.

Un modelo personalizado impreso en 3D para la evaluación preoperatoria en cirugía de tiroides

The anatomic structure of the surgical area of thyroid cancer is complex. It is very important to comprehensively and carefully evaluate the tumor ...

Reconstrucción 3D para el diagnóstico y tratamiento de nódulos pulmonares

A 3D Digital Model for the Diagnosis and Treatment of Pulmonary Nodules

The three-dimensional (3D) reconstruction of pulmonary nodules using medical images has introduced new technical approaches for diagnosing and treating pulmonary nodules, and these approaches are progressively being acknowledged and adopted by physicians and patients. Nonetheless, constructing a relatively universal 3D digital model of pulmonary nodules for diagnosis and treatment is challenging due to device differences, shooting times, and nodule types. The objective of this study is to propose a new 3D digital model of pulmonary nodules that serves as a bridge between physicians and patients and is also a cutting-edge tool for pre-diagnosis and prognostic evaluation. Many AI-driven pulmonary nodule detection and recognition methods employ deep learning techniques to capture the radiological features of pulmonary nodules, and these methods can achieve a good area under-the-curve (AUC) performance. However, false positives and false negatives remain a challenge for radiologists and clinicians. The interpretation and expression of features from the perspective of pulmonary nodule classification and examination are still unsatisfactory. In this study, a method of continuous 3D reconstruction of the whole lung in horizontal and coronal positions is proposed by combining existing medical image processing technologies. Compared with other applicable methods, this method allows users to rapidly locate pulmonary nodules and identify their fundamental properties while also observing pulmonary nodules from multiple perspectives, thereby providing a more effective clinical tool for diagnosing and treating pulmonary nodules.

Autor destacado: Un modelo digital 3D para el diagnóstico y tratamiento de nódulos pulmonares  

The objective of this study is to develop a novel 3D digital model of pulmonary nodules that serves as a communication bridge between physicians and patients and is also a cutting-edge tool for pre-diagnosis and prognostic evaluation.

Un modelo digital 3D para el diagnóstico y tratamiento de nódulos pulmonares

The three-dimensional (3D) reconstruction of pulmonary nodules using medical images has introduced new technical approaches for diagnosing and treating ...

Evaluación de la deposición pulmonar regional utilizando modelos pulmonares impresos en 3D específicos del paciente

Resumen

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