127 / 146
Appropriate knowledge of the document RP160 is required for the most
part of people involved, thus the participation of four persons to the
EURADOS training course was needed. Moreover the updating process in-
volves not only Health Physics but also other Departments, like QA and
Technology.
Results:
The updating process required around two years, and severely im-
proved the quality standard of our IMS. An improving of human resources
was the price to achieve this standard. Moreover, the updating process is
a continuous action: the resources needed to reach such quality standard
are the same to keep it.
Conclusions:
According to the procedures stated by the Italian accredita-
tion institution (ACCREDIA) we submitted the application, and an audit is
now expected.
http://dx.doi.org/10.1016/j.ejmp.2016.01.420D.414
ABSTRACT WITHDRAWN
http://dx.doi.org/10.1016/j.ejmp.2016.01.421D.415
AUTOMATIC RADIATION DOSE TRACKING AS PART OF A REGIONAL PACS
IN TUSCANY
C. Sottocornola
* , a , c ,M. Quattrocchi
b ,A.C. Traino
a ,A. Lazzar
i b ,D. Caramella
a .a
Azienda Ospedaliera Universitaria Pisana, Pisa, Italy;
b
ASL 2 Lucca, Lucca, Italy;
c
Department of Physics, University of Pisa, Pisa, Italy
Introduction:
In the north-west of Tuscany, Fujifilm established a region-
al PACS system that recently has been implemented with the installation
of dose-tracking software. It allows users to continuously monitor the ra-
diation dose delivered to patients during daily radiological examinations.
At the University of Pisa, a dedicated dose team, composed of radiolo-
gists, radiology technicians, physicists and engineers systematically uses
this software in order to improve radiological quality management and to
optimise acquisition protocol by monitoring dose performance.
Materials and Methods:
Two hospitals are connected to the software: Lucca
and AOU Pisana. Many types of devices were connected: 13 CT scanners,
5 mammographies, 18 DR/CR scanners. In the last two years more than
115,140 CT scans, 18,800 mammography procedures and 150,900 conven-
tional radiography exams have been retrospectively analysed.
The software tool that can automatically retrieve, store and analyse dosi-
metric data allowed us to compare data of the same type of exams
performed in different hospitals and with different devices.
Results:
Three mammographies (2 Senographe DS, GE; 1 Giotto Image MD)
installed at AOU Pisana and the two ones (Amulet, Fujifilm) at Lucca Hos-
pital were connected to dose tracking software. Data from these
mammographies were analysed: 2481 exams for GE DS1, 5615 exams for
GE DS2, 372 exams for Giotto IMS, 4519 for Amulet1 and 489 for Amulet2.
Average glandular dose was, respectively, 3.62 mGy; 4.45 mGy; 10.20 mGy;
4.56 mGy and 5.51 mGy.
Conclusions:
Due to an increasing interest in patient radiation dose, sys-
tematic monitoring of radiation dose is becoming necessary in order to
improve the consistency and reproducibility of radiological services.
The preliminary experience of the north-west area of Tuscany shows that
dose-monitoring system that enables retrospective, as well as real-time,
and multi-parametric performance evaluations, represents a useful exten-
sion of the regional PACS.
http://dx.doi.org/10.1016/j.ejmp.2016.01.422D.416
CT ORGAN DOSES AND EFFECTIVE DOSE CALCULATION USING PHYSICO®:
AN AUTOMATIC DOSIMETRIC SOFTWARE
F. Tanzi
* , a ,A. Ribolz
i b ,C. Bianchi
a ,R. Novario
c ,L. Pozz
i a .a
S.C. Fisica Sanitaria,
Ospedale Di Circolo e Fondazione Macchi, Varese, Italy;
b
EMME ESSE M.S. SRL,
Milano, Italy;
c
Dipartimento di Biotecnologie e Scienze della vita, Università
dell’ Insubria, Varese, Italy
Background:
The S.C. Fisica Sanitaria of The “Ospedale di Circolo di Varese”,
is an active partner for the development of a software called Physico®: a
software suite for the management of the activities of a Medical Physics
Dept.
Physico® runs on Debian®, is developed using Postgre®, it is a WEB based
application and it requires only a WEB Browser to run on clients, is com-
patible with all browsers available till now. It is based on a Postgre®
relational DataBase from which it’s possible to extract any type of data by
using dedicated queries.
Material and Methods:
The software has a Patient Dosimetry module, which
can do automatic estimation of Patient Organ Doses and Effective Doses
for CT examination by using CTDI and DLP coming from DICOM SRs data
stored into the database.
The PD Module can also calculate the skin entrance Dose in projective ra-
diology, allowing for DRLs statistics.
Information can be acquired both from DICOM headers and DICOM STRUC-
TURED DOSE REPORT.
Results:
Physico, writes into the DB CTDI, CTDIw, DLP coming from each
series. We implemented an algorithm that calculates Effective Doses from
the Organ Doses; it works for Thorax and Abdomen examinations, based
on the paper: “Patient-based estimation of organ dose for a population of
58 adult patients across 13 protocol categories” Pooyan Sahbaee et al., Med
Phys 41 (7), July 2014
( http://dx.doi.org/10.1118/1.4883778 ).
Conclusions:
Organ Doses along with their uncertainties are used to cal-
culate Effective Doses for adult and pediatric patients undergoing CT and
PET-CT examinations.
http://dx.doi.org/10.1016/j.ejmp.2016.01.423D.417
INVESTIGATION ON NUCLEAR MEDICINE’S COUNTING WASTE: PRESENCE
OF EU-152 WAS FOUND
F. Zenone *, P. Tanganelli, G. Belli.
UOC Fisica Sanitaria – AUSL8, Arezzo, Italy
Introduction:
Radioactive wastes from nuclear medicine procedures, nom-
inally with short decay times, are stored up to decay to a safe level. Six boxes
stored from 1996, measured with a contamination monitor, shows unex-
pected emissions. The aim of this work is to describe the assessments and
measurements to understand why our waste still have a detectable activity.
Materials and Methods:
We suppose high activity or long decay time
material.
We used:
•
portable contamination monitor to localize the emission point;
•
interviews in nuclear medicine unit and RIA laboratory to know which
isotopes and which activities has been used in that period;
•
diagnostic X-ray tube and 16slice TC to see, without handle sharp waste,
if there were solid sources or large volumes liquid;
•
gamma ray spectroscopy, using a cylindrical NaI scintillation detector,
to have energy information. We calibrate the system putting a box, with
a reference sources inside, on the open lead tube surrounding the de-
tector. It was not possible efficiency calibration due to bad geometry;
•
activity calculation from specific gamma-ray dose constant and mea-
sured dose rate.
Results:
The contamination measure showed the presence of a localized
source.
The interviews has confirmed that they had been used only the sources
reported in the waste register.
X-ray images have ruled out the presence of big amount of liquid and of
solid object that might be such a high activity source.
The spectra revealed the presence of high-energy photon peaks charac-
teristic of those from Eu-152. Calculated activity for the 6 boxes was
maximum 17.64 kBq (max dose rate measured was 0.55 μSv/h).
Conclusions:
Ours results are confirmed from literature: low activity of Eu-
152 contaminate Sm-153, used in nuclear medicine treatments in those
years. Because of long decay time (t1/2
=
13.5 year) it’s possible to dispose
of waste only by authorized firm.
Bad geometry gamma ray spectroscopy, diagnostic X-ray tube and TC could
be valuable tools to analyze radioactive waste.
http://dx.doi.org/10.1016/j.ejmp.2016.01.424e122
Abstracts/Physica Medica 32 (2016) e116–e123