scholarly journals Fully automated delineation of the optic radiation for surgical planning using clinically feasible sequences

2021 ◽  
Author(s):  
Lee B. Reid ◽  
Eloy Martínez‐Heras ◽  
Jose V. Manjón ◽  
Rosalind L. Jeffree ◽  
Hamish Alexander ◽  
...  
Keyword(s):  
Surgical Planning ◽  
Optic Radiation

scholarly journals Diffusion tensor imaging tractography of the optic radiation for epilepsy surgical planning: A comparison of two methods

2011 ◽  
Vol 97 (1-2) ◽  
pp. 124-132 ◽  
Author(s):  
Gavin P. Winston ◽  
Laura Mancini ◽  
Jason Stretton ◽  
Jonathan Ashmore ◽  
Mark R. Symms ◽  
...  
Keyword(s):  
Diffusion Tensor Imaging ◽  
Surgical Planning ◽  
Diffusion Tensor ◽  
Optic Radiation ◽  
Diffusion Tensor Imaging Tractography

scholarly journals Fully Automated Delineation of the Optic Radiation for Surgical Planning using Clinically Accessible Sequences

2020 ◽  
Author(s):  
Lee B Reid ◽  
Eloy Martínez-Heras ◽  
Jose B Manjón ◽  
Rosalind L Jeffree ◽  
Hamish Alexander ◽  
...  
Keyword(s):  
Diffusion Mri ◽  
Surgical Planning ◽  
Temporal Lobectomy ◽  
Optic Radiation ◽  
Post Processing ◽  
Temporal Pole ◽  
Meyer’S Loop ◽  
Efficiency And Reliability ◽  
Healthy Participants ◽  
Anterior Extent

Quadrantanopia caused by inadvertent severing of Meyer's Loop of the optic radiation is a well-recognised complication of temporal lobectomy for conditions such as epilepsy. Dissection studies indicate that the anterior extent of Meyer's Loop varies considerably between individuals. Quantifying this for individual patients is thus an important step to improve the safety profile of temporal lobectomies. Previous attempts to delineate Meyer's Loop using diffusion MRI tractography have had difficulty estimating its full anterior extent, required manual ROI placement, and/or relied on advanced diffusion sequences that cannot be acquired routinely in most clinics. Here we present CONSULT - a pipeline that can delineate the optic radiation from raw DICOM data in a completely automated way via a combination of robust preprocessing, segmentation, and alignment stages, plus simple improvements that bolster the efficiency and reliability of standard tractography. We tested CONSULT on 694 scans of predominantly healthy participants (538 unique brains), including both advanced acquisitions and simpler acquisitions that could be acquired in clinically acceptable timeframes. Delineations completed without error in 99.4% of the scans. The distance between Meyer's Loop and the temporal pole closely matched both averages and ranges reported in dissection studies for all tested sequences. Median scan-rescan error of this distance was 1mm. When tested on two participants with considerable pathology, delineations were successful and realistic. Through this, we demonstrate not only how to identify Meyer's Loop with clinically accessible sequences, but also that this can be achieved without fundamental changes to tractography algorithms or complex post-processing methods.

Printing of 3-dimensional models for surgical planning of complex aortic arch surgery

2014 ◽  
Vol 62 (S 01) ◽  
Author(s):  
R. Sodian ◽  
G. Juchem ◽  
S. Weber ◽  
N. Gerber ◽  
N. Khaladj ◽  
...  
Keyword(s):  
Aortic Arch ◽  
Surgical Planning ◽  
Aortic Arch Surgery ◽  
3 Dimensional ◽  
Dimensional Models

3D Printed Models for Surgical Planning and Reconstructive Implant Design in Sphenoorbital Tumor Surgery

2016 ◽  
Vol 77 (S 02) ◽  
Author(s):  
Hassan Othman ◽  
Sam Evans ◽  
Daniel Morris ◽  
Saty Bhatia ◽  
Caroline Hayhurst
Keyword(s):  
Surgical Planning ◽  
Implant Design ◽  
Tumor Surgery ◽  
3D Printed

Improved Optic Nerve Visualization and Surgical Planning through a Novel MRI Protocol

2019 ◽  
Author(s):  
Kyle Wu ◽  
Wenya Bi ◽  
Michael Moooney ◽  
Jeffrey Guennette ◽  
Raymond Huang ◽  
...  
Keyword(s):  
Optic Nerve ◽  
Surgical Planning ◽  
Mri Protocol

Methods and importance of volume measurement in reconstructive and aesthetic breast surgery

2014 ◽  
Vol 155 (11) ◽  
pp. 407-413 ◽  
Author(s):  
Csaba Kunos ◽  
Gusztáv Gulyás ◽  
Pál Pesthy ◽  
Eszter Kovács ◽  
Zoltán Mátrai
Keyword(s):  
Magnetic Resonance ◽  
Surgical Planning ◽  
Volume Measurement ◽  
Tumor Removal ◽  
Breast Asymmetry ◽  
Breast Parenchyma ◽  
Implant Selection ◽  
The Difference ◽  
Aesthetic Breast ◽  
Measured Volume

Volume measurment of the breast allows for better surgical planning and implant selection in breast reconstructive and symmetrization procedures. The safety and accuracy of tumor removal, in accordance with oncoplastic principles, may be imporved by knowing the true breast- and breast tumor volume. The authors discuss the methods of volume measurement of the breast and describe the method based on magnetic resonance imaging digital volume measurment in details. The volume of the breast parenchyma and the tumor was determined by processing the diagnostic magnetic resonance scans, and the difference in the volume of the two breasts was measured. Surgery was planned and implant selection was made based on the measured volume details. The authors conclude that digital volume measurement proved to be a valuable tool in preoperative planning of volume reducing mammaplasty, replacement of unknown size implants and in cases when breast asymmetry is treated. Orv. Hetil., 2014, 155(11), 407–413.

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