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user story
CAM2 ARMUSER STORY BOOKLET | 4
Workstation for the data compilation of a hemisphere with the
FaroArm Fusion V2
2012
"The precision and speed of measurement of the FaroArm
Fusion were decisive in the selection of the portable CMM
for
the scientific team, as the digital sensor is capable of
scanning
more than 19,000 points per second."
MR SERRES, DOCTORAL RESEARCHER, UNIVERSITY OF TOURS
>>
For nearly three years, several teams at the Uni-
versity Franois Rabelais of Tours have been
working on a project for the virtual dissection of
human brain bres, the Fibratlas project. This
multidisciplinary project combines MRI imaging
researchers from the INSERM U930 unit, anato-
mists from the anatomy laboratory of the Faculty
of Medicine at Tours and computer scientists
from the computer lab at Tours (LI, EA2101).
The goal is to generate "ground truth" data in
order to conrm the results of algorithms re-
constructing brain bres based on MRI images
(tractography).
In the scope of this project, the research-
ers are conducting a dissection of the two hemi-
spheres of the human brain by stages. The speci-
mens are collected from bodies which have been
donated to science. As dissection is a destruc-
tive process; it is necessary to preserve a record
of each step. As a rst stage, they record the
results from each step in the dissection of the
cerebral hemispheres using a FARO ScanArm la-
ser scanner, and then register these results using
common reference points spread on the scanned
surfaces. The neuroanatomist then "replays" the
dissection virtually in order to identify the visible
portions of the bre bundles at each digitized
step. These portions are then used to reconstruct
the entire bre bundles being studied. The
THE UNIVERSITY FRANOIS RABELAIS OF
TOURS is working on the virtual dissection
of human brain bres in the context of a
multidisciplinary research project.
Virtual dissection of the human
brain with the support of FaroArm
@ VISIT US AT WWW.FARO.COM
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4 GOOD REASONS
USER STORY UNIVERSIT TOURS
REVERSE ENGINEERING
Software visual overview
MEASURING-ARMS.FARO.COM
1Precision and speed of measure-
ment: The precision and speed
of measurement of the FaroArmFusion were decisive in the
selec-
tion of the portable CMM for the
scientic team, as the digital
sensor is capable of scanning more
than 19,000 points per second.
2Size: The small footprint of
the FARO Fusion allowed easy
integration into the anatomy
laboratory.
3Flexibility: Because it has several
rotation axes, the measurement
arm could be aligned with the
measurement points with great
exibility, even if it they were not
easily accessible.
4Ergonomics: the internal counter-
weight in the arm permits ease of
operation.
ABOUT U930 AND LI
U930, located at the Teaching Hospital (CHU) in
Tours, is composed of 5 teams of researchers and
practitioners. The main goal of the team involved in
the project is one of creating and conrming imaging
methods which can be used in clinical research in or-
der to help understand the physiopathological mecha-
nisms involved in the development and functioning of
the human brain.
The LI is composed of computer science researchers,
and is particularly interested in creating new methods
and improving algorithms and their applications in
the medical eld. The Fibratlas project makes use of
laboratory capacities with regard to 3D data acquisi-
tion and interactive scientic visualisation.
WWW.LI.UNIV-TOURS.FR
WWW.U930.TOURS.INSERM.FR
>>
FARO ARMUSER STORY BOOKLET | 5
results obtained are compared to the recon-
structions of the same bundles based on MRI im-
ages in order to conrm the tractography methodsused in medical
imaging.
As the precision of the MRI is in the range of
mm3, the research team needed a more accurate
3D measurement system in order to produce an ex-
tremely precise digital model of the dissected speci-
men.
The team selected the FaroArm Fusion 7-axis
measuring arm and its ScanArm V2 laser digital
sensor to digitize the brains in 3D during their dis -
section. The brain is treated so that it is rm
enough not to be deformed by the dissection.
It is then attached to a plate on which the ref-
erence points are scanned by the touch sensor.
The laser head is then used to digitize the remainderof the
sample. The arm offers an unmatched freedom
of movement, such that it can be revolved around the
sample in order to digitize the entire surface.
ABOUT FARO
FARO develops and manufactures portable systems for
the measurement and 3D documentation of spaces and
objects. Products from FARO permit rapid and highly
precise 3D measurement for inspection, quality control,
alignment, surface modeling, asset management, and
documentation needs. The simple-to-use solutions are
ideal for numerous applications in various industries,
including manufacturing, automotive, aerospace,
architecture and civil engineering, energy and forensics.
FARO currently has more than 26,000 installations and
13,000 customers globally.
Principal products include the worlds best-selling
portable measurement arm the FaroArm, FARO
ScanArm, the FARO Gage, the FARO Laser Tracker,
the FARO Laser Scanner, the FARO 3D Imager and
the CAM2 family of advanced CAD-based measure-
ment and reporting software. FARO is ISO-9001 certi -
ed and ISO-17025 laboratory registered.
WWW.FARO.COM
"The precision and speed of measurement of the
FaroArm Fusion were decisive in terms of the selec-
tion of the portable CMM for the scientic team, asthe digital
sensor is capable of scanning more than
19,000 points per second," noted Mr Serres, doctor-
al researcher at the computer lab of the University
of Tours. "Furthermore, its small footprint and its
manoeuvrability made it extremely easy to integrate
into the anatomy laboratory."
The researchers are now continuing their work
in compiling the data and developing the software.
The tool created will also serve both as a basis for
training neurosurgeons and navigating between the
different dissection steps of the brain and as a basis
for research work evaluating the results given by dif-
fusion MRI.
FREECALL 00800 3276 7253
