Background/introduction
Significant technological and scientific advances have increased patient exposure to radiation in the medical field.
In this respect,
the EURATOM Directive2013/59 reinforced the importance of controlling exposures for medical purposes.
It includes,
for example,
the requirements for recording and reporting doses resulting from the medical procedures and the availability of dose monitoring devices.
In this light,
the start-up Fibermetrix developed an innovative and functional real-time dosimeter IVIscan™ for x-ray dosimetry.
This technology - a world first – was developed for medical imaging and especially for...
Description of activity and work performed
This work concerns first the validation of IVIscan™ dosimeter to standards.
A second step provides clinicalstudies about comparison between the CTDI measured with IVIscan™ and displayed by CT from different manufacturer.
Based on fundamental and preliminary research with CNRS and INSERM French labs,
its first patented optical fiber detector (1,2) allows an automated and real-time measurement of patient dose and CT dose indexes (equal to the CTDI and DLP).
See the technology principle on Fig.
2.
The detector probe is based on a scintillating optical...
Conclusion and recommendations
IVIscan was compared to standard dosimeters and showed a maximum difference of 3% in the CT energy range.
Difference between IVIscan and TLD is due to relative error to the TLD measurements - about 15%.
The LNHB results of the characterizationin diagnosis energy range showed 0.3% relative error.
The dosimeter was successfully validated andprouved its accuracy in clinical case studies.Then it could be used as a reference to perform patient-specific studies.
A multicenter study is currently underway in various medical centers in France.
First results...
Personal/organisational information
M.
Munier,
R&D Director,
Fibermetrix SAS,
7 allée de l'Europe,
67690 Entzheim,
France.
F.
Carbillet,
Medical Physicist,
Fibermetrix SAS,
7 allée de l'Europe,
67690 Entzheim,
France.
P.
Gillet,
PhD Physics Student,
Fibermetrx SAS,
7 allée de l'Europe,
67690 Entzheim,
France.
Institut Pluridisciplinaire Hubert Curien,
UMR7178 CNRS/Unistra,
23 rue du Loess,
67037 Strasbourg,
France.
References
(1) M.
Munier,
F.
Carbillet,
F.
Torche,
T.
Sohier,
FR1656612,
PCT FR2017/051847,
Dispositif de détermination d’une dose déposée...
Fibermetrix SAS,
2016.
(2) M.
Munier,
T.
Sohier,
J.-M.
Jung,
M.
Torres,
R.
Barillon,
Method for determining the irradiation dose deposited in a scintillator by ionising radiation and associated device.
US9244178(B2),
2016.
(3) Poludniowski G,
Landry G,
Deblois F,
Evans P M,
Verhaegen F.
SpekCalc : A program to calculate photon spectra from tungsten anode X-ray tubes.
Phys Med Biol.
2009 ;54(19) :N433N438.
(4) Jan S et...