Virtual Resection and Subsequent Design of a Patient-Specific Alloplastic Implant in the Preoperative Planning and Surgical Treatment of a Venous Malformation of the Zygoma

2015 ◽  
Vol 26 (7) ◽  
pp. e641-e643
Author(s):  
Jennifer Lavie ◽  
Mark W. Stalder ◽  
Hugo St. Hilaire
Keyword(s):  
Surgical Treatment ◽  
Preoperative Planning ◽  
Venous Malformation ◽  
Patient Specific

Preoperative Planning and Patient-Specific Rods for Surgical Treatment of Thoracolumbar Sagittal Imbalance

2016 ◽  
pp. 645-662 ◽  
Author(s):  
Vincent Fiere ◽  
Xavier Armoiry ◽  
Jean Marc Vital ◽  
Virginie Lafage ◽  
Julien Berthiller ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Preoperative Planning ◽  
Patient Specific ◽  
Sagittal Imbalance

Full tractography for detecting the position of cranial nerves in preoperative planning for skull base surgery: technical note

2020 ◽  
Vol 132 (5) ◽  
pp. 1642-1652 ◽  
Author(s):  
Timothee Jacquesson ◽  
Fang-Chang Yeh ◽  
Sandip Panesar ◽  
Jessica Barrios ◽  
Arnaud Attyé ◽  
...  
Keyword(s):  
Skull Base ◽  
Preoperative Planning ◽  
Skull Base Surgery ◽  
Cranial Nerves ◽  
Patient Specific ◽  
Small Scale ◽  
Skull Base Tumor ◽  
Skull Base Tumors ◽  
Brain White Matter ◽  
Human Connectome Project

OBJECTIVEDiffusion imaging tractography has allowed the in vivo description of brain white matter. One of its applications is preoperative planning for brain tumor resection. Due to a limited spatial and angular resolution, it is difficult for fiber tracking to delineate fiber crossing areas and small-scale structures, in particular brainstem tracts and cranial nerves. New methods are being developed but these involve extensive multistep tractography pipelines including the patient-specific design of multiple regions of interest (ROIs). The authors propose a new practical full tractography method that could be implemented in routine presurgical planning for skull base surgery.METHODSA Philips MRI machine provided diffusion-weighted and anatomical sequences for 2 healthy volunteers and 2 skull base tumor patients. Tractography of the full brainstem, the cerebellum, and cranial nerves was performed using the software DSI Studio, generalized-q-sampling reconstruction, orientation distribution function (ODF) of fibers, and a quantitative anisotropy–based generalized deterministic algorithm. No ROI or extensive manual filtering of spurious fibers was used. Tractography rendering was displayed in a tridimensional space with directional color code. This approach was also tested on diffusion data from the Human Connectome Project (HCP) database.RESULTSThe brainstem, the cerebellum, and the cisternal segments of most cranial nerves were depicted in all participants. In cases of skull base tumors, the tridimensional rendering permitted the visualization of the whole anatomical environment and cranial nerve displacement, thus helping the surgical strategy.CONCLUSIONSAs opposed to classical ROI-based methods, this novel full tractography approach could enable routine enhanced surgical planning or brain imaging for skull base tumors.

A case of successful surgical treatment of patient with adrenal cyst using 3-d modeling

2020 ◽  
Vol 28 (4) ◽  
pp. 530-535
Author(s):  
Ivan Andreev ◽  
Alexander Kolsanov ◽  
Sergey Katorkin ◽  
Evgeniy Shestakov ◽  
Leonid Lichman
Keyword(s):  
Surgical Treatment ◽  
Surgical Resection ◽  
3D Modeling ◽  
Clinical Observation ◽  
Preoperative Planning ◽  
Clinical Presentation ◽  
Surgical Intervention ◽  
Adrenal Cyst ◽  
The Right ◽  
Medical University

Aim. Demonstration of potentials of preoperative planning and implementation of surgical resection in patients with adrenal cysts. A clinical observation of a successful surgical treatment of a rare pathology cyst of the right adrenal is presented. The choice of surgical treatment tactics is determined by the size of tumor and clinical presentation of the disease. The surgical treatment was accomplished laparoscopically which permitted to reduce the time of recovery and rehabilitation of the patient. In this clinical observation, the benefit of using 3D-modeling of the surgical area was shown for visualization of topographic and anatomic peculiarities and facilitation of the intraoperative navigation with the help of Avtoplan program developed by Samara State Medical University. Conclusion. Preoperative 3D-modeling permits to prepare to surgical intervention taking into account individual anatomic peculiarities of a patient, and to determine the optimal volume of the operation.

scholarly journals Current Practice in Preoperative Virtual and Physical Simulation in Neurosurgery

2020 ◽  
Vol 7 (1) ◽  
pp. 7 ◽  
Author(s):  
Elisa Mussi ◽  
Federico Mussa ◽  
Chiara Santarelli ◽  
Mirko Scagnet ◽  
Francesca Uccheddu ◽  
...  
Keyword(s):  
Clinical Practice ◽  
3D Printing ◽  
Surgical Planning ◽  
Physical Simulation ◽  
Planning Process ◽  
Preoperative Planning ◽  
Cost Effective ◽  
Patient Specific ◽  
Anatomical Models ◽  
Standard Clinical Practice

In brain tumor surgery, an appropriate and careful surgical planning process is crucial for surgeons and can determine the success or failure of the surgery. A deep comprehension of spatial relationships between tumor borders and surrounding healthy tissues enables accurate surgical planning that leads to the identification of the optimal and patient-specific surgical strategy. A physical replica of the region of interest is a valuable aid for preoperative planning and simulation, allowing the physician to directly handle the patient’s anatomy and easily study the volumes involved in the surgery. In the literature, different anatomical models, produced with 3D technologies, are reported and several methodologies were proposed. Many of them share the idea that the employment of 3D printing technologies to produce anatomical models can be introduced into standard clinical practice since 3D printing is now considered to be a mature technology. Therefore, the main aim of the paper is to take into account the literature best practices and to describe the current workflow and methodology used to standardize the pre-operative virtual and physical simulation in neurosurgery. The main aim is also to introduce these practices and standards to neurosurgeons and clinical engineers interested in learning and implementing cost-effective in-house preoperative surgical planning processes. To assess the validity of the proposed scheme, four clinical cases of preoperative planning of brain cancer surgery are reported and discussed. Our preliminary results showed that the proposed methodology can be applied effectively in the neurosurgical clinical practice both in terms of affordability and in terms of simulation realism and efficacy.

Intramuscular venous malformations of the calf: Surgical treatment outcomes of 57 patients

2020 ◽  
Vol 35 (8) ◽  
pp. 597-604
Author(s):  
Claude Laurian ◽  
Pierre Cerceau ◽  
Nikos Paraskevas ◽  
Claudine Massoni ◽  
Veronique Marteau ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Surgical Treatment ◽  
Venous Malformation ◽  
Functional Limitation ◽  
Venous Malformations ◽  
Complete Excision ◽  
Muscle Involvement ◽  
Residual Functional

Objectives To report the outcomes of surgical treatment of calf intramuscular venous malformations (IMVMs) on pain, functional limitation, and quality of life. Methods We retrospectively reviewed 57 consecutive patients who had surgery for IMVM of the posterior compartment of the leg between 2010 and 2015. Treatments were all done at a single institution. Results Patients presented with pain (52), muscle contracture (14), or pulmonary embolism (4). Muscle involvement included the soleus muscle (n = 28, 49%), the gastrocnemius muscle (n = 25, 43%), and deep muscles (n = 4, 7%). Complete excision was possible in 52 patients (91%) and partial excision in 5 (9%). Thirty-five of 46 patients who had an MRI follow-up at six months had no residual venous malformation. At the final follow-up (mean 39 months), 32 of 40 patients seen had no residual pain and 37 had no residual functional impairment. Conclusion In cases where IMVM is located in one muscle in the leg, we demonstrated that surgery yielded improvement in pain, function, and quality of life.

scholarly journals Computer-Assisted Planning and Three-Dimensional-Printed Patient-Specific Instrumental Guide for Corrective Osteotomy in Post-Traumatic Femur Deformity: A Case Report and Literature Review

2018 ◽  
Vol 24 (1) ◽  
pp. 12-17 ◽  
Author(s):  
Lau Chi-Kay ◽  
Chui King-him ◽  
Lee Kin-bong ◽  
Li Wilson
Keyword(s):  
Lower Limb ◽  
New Technologies ◽  
Preoperative Planning ◽  
Corrective Osteotomy ◽  
Three Dimensional ◽  
Patient Specific ◽  
Computer Assisted ◽  
Limb Deformity ◽  
Satisfactory Outcome ◽  
Post Traumatic

Post-traumatic limb deformity is often multiplanar and thus is a difficult pathology to deal with surgically. Precise preoperative planning and accurate intraoperative execution are two main important steps that lead to satisfactory outcome. Computer-assisted planning and three-dimensional-printed patient-specific instrumental guides provide excellent aid to the two steps, respectively. We report a case of posttraumatic lower limb deformity in a patient who underwent closing wedge corrective osteotomy with the aid of the aforementioned new technologies.

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