Pursuing perfect 2D and 3D photography in neuroanatomy: a new paradigm for staying up to date with digital technology

Xu, Yuanzhi; Vigo, Vera; Klein, Joshua P.; Núñez, Maximiliano; Fernández-Miranda, Juan C.; Cohen-Gadol, Aaron; Mao, Ying

doi:10.3171/2022.9.jns221988

Cited by 5 publications

(13 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although, diffuse light from a fixed light source is not sufficient to generate a SMPhP 3D model that can simultaneously depict superficial and deep anatomic structures such as the segments of the facial nerve because this light is insufficient to depict the finer details in the depth. For our purpose of refining a simple and easy-accessible SMPhP algorithm, we needed to avoid the use of a professional high-resolution digital single-lens reflex camera with ring flash 1,2,9 and manual segmentation of data. Contrary to our expectations, postprocessing of photographs depicting smaller structures, such as the frontal branch of the facial nerve and petrous segments, was not necessary for optimal visualization before uploading to the photogrammetry software.…”

Section: Discussionmentioning

confidence: 99%

“…Blender was the sole 3D software used to process our 3D models, whereas other investigators have used more commercial software solutions. 2,9,10,21 Compared with other 3D modeling methods, our suggested algorithm does not require knowledge from a dedicated technician. The refined algorithm only required average photographic skills and basic-to-mid-level 3D modeling abilities and relatively few working hours with primarily background computer processing time.…”

Section: Optimizing Technique For Presentation Of Neuroanatomymentioning

confidence: 99%

“…Although, it would have required an unproportionate amount of funds and working hours when comparing with the sufficient quality in the resulting models from our suggested method. We imagine that these different approaches 4,9,10,18,21 to photogrammetric methods could supplement one another and be a feasible and easy-accessible method for rapid production of complete 3D models of all the cranial nerves. This approach needs to be studied further in more cadaver specimens and fine tuning.…”

Section: Limitations and Future Perspectivesmentioning

confidence: 99%

“…Until recently, expensive photographic equipment, advanced computer hardware and software configuration, and comprehensive modeling experience to create a 3D model from 2D high-resolution large-sized photographs were needed for this process. 2,7,9,10 This requirement for advanced 3D modeling skills and expensive investments would limit the use of photogrammetry to a small number of physicians with available resources.…”

mentioning

confidence: 99%

“…high-resolution large-sized photographs were needed for this process. 2,7,9,10 This requirement for advanced 3D modeling skills and expensive investments would limit the use of photogrammetry to a small number of physicians with available resources.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Simplified Easy-Accessible Smartphone-Based Photogrammetry for 3-Dimensional Anatomy Presentation Exemplified With a Photorealistic Cadaver-Based Model of the Intracranial and Extracranial Course of the Facial Nerve

Krogager

Fugleholm

Mathiesen

et al. 2023

Operative Neurosurgery

View full text Add to dashboard Cite

BACKGROUND AND OBJECTIVES: Smartphone-based photogrammetry (SMPhP) was recently presented as a practical and simple algorithm to create photorealistic 3-dimensional (3D) models that benefit from volumetric presentation of real anatomic dissections. Subsequently, there is a need to adapt the techniques for realistic depiction of layered anatomic structures, such as the course of cranial nerves and deep intracranial structures; the feasibility must be tested empirically. This study sought to adapt and test the technique for visualization of the combined intracranial and extracranial course of the facial nerve's complex anatomy and analyze feasibility and limitations. METHODS: We dissected 1 latex-injected cadaver head to depict the facial nerve from the meatal to the extracranial portion. A smartphone camera alone was used to photograph the specimen, and dynamic lighting was applied to improve presentation of deep anatomic structures. Three-dimensional models were created with a cloud-based photogrammetry application. RESULTS: Four 3D models were generated. Two models showed the extracranial portions of the facial nerve before and after removal of the parotid gland; 1 model showed the facial nerve in the fallopian canal after mastoidectomy, and 1 model showed the intratemporal segments. Relevant anatomic structures were annotated through a web-viewer platform. The photographic quality of the 3D models provided sufficient resolution for imaging of the extracranial and mastoid portions of the facial nerve, whereas imaging of the meatal segment only lacked sufficient precision and resolution. CONCLUSION: A simple and accessible SMPhP algorithm allows 3D visualization of complex intracranial and extracranial neuroanatomy with sufficient detail to realistically depict superficial and deeper anatomic structures.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Optimizing Technique For Presentation Of Neuroanatomymentioning

confidence: 99%

Section: Limitations and Future Perspectivesmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Simplified Easy-Accessible Smartphone-Based Photogrammetry for 3-Dimensional Anatomy Presentation Exemplified With a Photorealistic Cadaver-Based Model of the Intracranial and Extracranial Course of the Facial Nerve

Krogager

Fugleholm

Mathiesen

et al. 2023

Operative Neurosurgery

View full text Add to dashboard Cite

show abstract

Neuroanatomy in virtual reality: Development and pedagogical evaluation of photogrammetry‐based 3D brain models

Aridan,

Bernstein‐Eliav,

Gamzo

et al. 2023

Anatomical Sciences Ed

View full text Add to dashboard Cite

Anatomy studies are an essential part of medical training. The study of neuroanatomy in particular presents students with a unique challenge of three‐dimensional spatial understanding. Virtual Reality (VR) has been suggested to address this challenge, yet the majority of previous reports have implemented computer‐generated or imaging‐based models rather than models of real brain specimens. Using photogrammetry of real human bodies and advanced editing software, we developed 3D models of a real human brain at different stages of dissection. Models were placed in a custom‐built virtual laboratory, where students can walk around freely, explore, and manipulate (i.e., lift the models, rotate them for different viewpoints, etc.). Sixty participants were randomly assigned to one of three learning groups: VR, 3D printed models or read‐only, and given 1 h to study the white matter tracts of the cerebrum, followed by theoretical and practical exams and a learning experience questionnaire. We show that following self‐guided learning in virtual reality, students demonstrate a gain in spatial understanding and an increased satisfaction with the learning experience, compared with traditional learning approaches. We conclude that the models and virtual lab described in this work may enhance learning experience and improve learning outcomes.

show abstract

Endoscopic Endonasal Approach to the Ventral Petroclival Fissure: Anatomical Findings and Surgical Techniques

Mohyeldin

Lee³

et al. 2023

J Neurol Surg B Skull Base

Self Cite

View full text Add to dashboard Cite

Objective: The endoscopic endonasal approach has emerged as an excellent option for the treatment of lesions involving the petroclival fissure (PCF), most commonly chordomas and chondrosarcomas. Here we investigate the surgical anatomy of the ventral PCF and its application in endoscopic endonasal surgery. Methods: Sixteen silicon-injected human head specimens were examined using endoscopy and microscopy. The anatomical features of PCF and relevant technical nuances in translacerum, extreme medial, and contralateral transmaxillary approaches were investigated. Two representative endoscopic endonasal surgery cases of pathologies involving the PCF were selected to illustrate the clinical application based on anatomical findings. Results: From the endoscopic endonasal view, the ventral PCF is presented as a lazy L sign, which is divided into 2 distinct segments: 1) upper (or petrosphenoidal) segment, which extends vertically from the foramen lacerum inferiorly to the junction of the petrosal process of sphenoid bone and petrous apex superiorly; 2) lower (or petroclival) segment, which extends inferolaterally from the foramen lacerum to the ventral jugular foramen. The paraclival internal carotid artery (ICA) is located anterior to the upper segment, whereas the lacerum and petrous ICA segments are located just above the lower segment. The abducens nerve courses just medial and superior to the upper segment as it enters the cavernous sinus, while the lower cranial nerves course posterior to the inferior end of the lower segment protected by the opening of the inferior petrosal sinus into the jugular foramen..... (revised shortened abstract to come)

show abstract

Pursuing perfect 2D and 3D photography in neuroanatomy: a new paradigm for staying up to date with digital technology

Cited by 5 publications

References 20 publications

Simplified Easy-Accessible Smartphone-Based Photogrammetry for 3-Dimensional Anatomy Presentation Exemplified With a Photorealistic Cadaver-Based Model of the Intracranial and Extracranial Course of the Facial Nerve

Simplified Easy-Accessible Smartphone-Based Photogrammetry for 3-Dimensional Anatomy Presentation Exemplified With a Photorealistic Cadaver-Based Model of the Intracranial and Extracranial Course of the Facial Nerve

Neuroanatomy in virtual reality: Development and pedagogical evaluation of photogrammetry‐based 3D brain models

Endoscopic Endonasal Approach to the Ventral Petroclival Fissure: Anatomical Findings and Surgical Techniques

Contact Info

Product

Resources

About