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S1003

ESTRO 36 2017

_______________________________________________________________________________________________

satisfaction with the operation of the radiotherapy

department with a statistically significant difference

(

p=0.030

). A very strong correlation coefficient (i.e. a

correlation coefficient whose value exceeds 0.600) was

found in relation to the satisfaction with the operation of

the radiotherapy department, namely in terms of work

and the provision of information by radiology engineers

and doctors’ work and kindness. All the correlations

obtained were statistically significant in terms of risk (1

%).

Conclusion

Conclusion: The assessment of a patient’s satisfaction

level is a generally recognized method of determining the

quality of healthcare services. The efficiency of a

patient’s medical treatment is determined by multiple

factors, among them being the working environment,

relationships among the medical staff, the methods of

leadership and organization, motivation and training of

the medical staff. Hence, the opinions of patients

represent a vital basis for the planning of changes and

improvements that would lead to a quality

implementation of work and medical care

.

EP-1862 Alert issues in the radiotherapy

D. Eyssen

1

1

MAASTRO Clinic, Radiation Oncology, Maastricht, The

Netherlands

Purpose or Objective

There are several report available with information about

risky circumstances in healthcare. The ECRI publish a top

10 list from risk in healthcare. The ECRI is an independent,

non- profit organization who investigates the best

approach for improvement of risk, quality and cost

effectivity in patientcare. On their website the top 10

hazard list is presented.According to these lists, alarm

management is a top 10 risk. Due to the dominant human-

technic relation within the radiotherapy this risk is also an

issue in the radiotherapy.

Material and Methods

The main focus for this research is advisory towards

reliable alerts at the right, risky moment whereby the user

will receive an adequate alert and knows how to handle.

There will be an comparison of the incident database

between the radiotherapy institutes. The cadre for this

comparison is: The overkill off reminders / pop-ups /

warnings. The lack of reminders / pop-ups / warnings.The

process on the linear accelerator. There will also be a tally

between radiotherapy institutes. The main focus is to

investigate if there are different alerts between the

institutes and the way institutes deal with these alerts.

For this tally the cadre is the linear accelerator

Results

Comparison of the database

3 institutes checked their database of incidents. Are there

any incident related to Alert management? What seems is

that there are not that many incident report related to

this topic. Although the less reports about alerts

management, it was still possible to classify the reports in

four groups: Alerts that have less organizational

embedding. This can lead to alerts tiredness. No alert

present but desirable. Unclear alerts for the user. Alerts

whereof not sure what the consequences are

Tally between the radiotherapy institutes

9 institutes have shared their data and tally their alerts

on the linear accelerator. The project group collect all the

data and processed it into a document. Although there is

variation between the number of alerts popups between

the different vendors, all the institutes received 1 to 5

alerts pop ups during one single patient treatment.

There also seems a difference between the vendors. In the

comparison there is clearly visible that one suppliers

presenting less alert pop up than the other. There is no

value judgment between the vendors about the alerts and

related incidents. Also the action that should be taken by

the alerts is different between the two vendors. One

vendor is using an override while the

other is using the

OK

button

Conclusion

Alerts are an issue in the radiotherapy. This research

shows that for each patient treatment the user must deal

with 1 to 5 alerts depending on the supplier. This indicates

that bad alerts management will not lead to false

radiation. On the other hand an overkill from alerts will

lead to alerts tiredness.A linear accelerator can make over

more than one thousand alerts. For the user is unthinkable

to deal with all these alerts. But act on a random basic is

also not conceivable.

EP-1863 Risk analysis for image guided lung SBRT

A. Perez-Rozos

1

, I. Jerez-Sainz

1

, A. Roman

1

, A. Otero

1

, M.

Lobato

1

, Y. Lupiañez

1

, J. Medina

1

1

Hospital Virgen de la Victoria, Radiation Oncology.

Medical Physics., Malaga, Spain

Purpose or Objective

Stereotactic Body Radiotherapy (SBRT) is a complex

technique that reduce number of sessions and increase

fraction dose, with higher accuracy requirements. In this

work we carry out a risk analysis of our lung SBRT

simulation, planning and treatment process using Failure

Modes and Effects methodology (FMEA).

Material and Methods

FMEA analysis was performed by a multidisciplinary team

integrated by radiographers, nurses, medical physicists,

and radiation oncologists. Main steps were: identify flux

diagram of whole process, assign risk and probability for

every steps, and specific analisys of higher RPN number

steps to reduce global risk uncertainty.

Results

Main analyzed steps include: a. Simulation, b. Prescription

and treatment planning c. Preparation and treatment

verification d. Treatment delivery. Every step was then

described with higher detail. The detail degree has to be

enough to allow for clarity, but not too high to loose in

small unimportant steps.

In every substep we identifyed failures modes and effects

and risk piority numbers (RPN) were assigned, using a

score for severity, ocurrence and detection probabilities