Breathing control in Radiotherapy

Do you need to control your patients breathing to allow you to implement your clinical IMRT of choice?

Do you want to integrate a system that is simple to use yet extremely accurate into your daily clinical routine with the least possible impact on your time?

If so the SDX from Dynr’ in France is the breathing gating system of choice for you, just watch this video of the system in clinical use to find out why!

http://www.sdx.fr/presentation.php?cat=3

SDX is now available in the UK and Ireland from DHA, the newly appointed agents.

Please contact Duncan Hynd on Duncan@dha.co.uk or Gilles Esquirol on Gilles.Esquirol@btopenworld.com for more information or a product demonstration and if interested in finding out more about breathing control, please read on!

Why Spirometry?

The SDX is a breathing control system for Radiotherapy allowing a reproducible position of the tumour from imaging until the last session of treatment. Thanks to this performance, the irradiation of healthy tissues and contiguous organs can be reduced.

Ergonomic and equipped with intuitive software, the SDX is easily handled by the Radiotherapy team.

The SDX is used routinely by more than 60 European Radiotherapy centers.

SDX is a Spirometry system comprising the spirometer located in the imaging or treatment room, and its software installed on a dedicated PC located in the control room.

A USB connection carries the information and provides the energy needed to supply the electronic card on the spirometer.

The spirometer is connected to the patient via a patient circuit comprising a mouthpiece ensuring a 100% leak-proof connection between man and machine; a nose clip is required to prevent any nasal leakage. For hygiene purposes, an antibacterial filter is inserted between the mouthpiece and the spirometry sensor (pneumotachograph). This pneumotachograph is set to 32°C in order to prevent condensation.

In the voluntary breath hold technique, the patient is provided with video glasses or remote screen to allow him/her to independently monitor his/her breathing pattern and reproduce the effective breath hold level.

SDX comprises 5 main modules:

• Patient circuit with flow sensor
• Calibration syringe
• Cradle and flexible support for the patient circuit and connecting cables
• CD ROM containing software installed on a dedicated PC with a screen
• An optional synchronisation box

During a starting phase, also called preparation phase, the patient is getting acquainted to the use of the spirometer. The clinical team is determining the optimum breath hold level in function of each patient respiratory capacity. The patient is then invited to repeat by itself a breath hold at the same pulmonary volume level during imaging and radiotherapy sessions.

Imaging

The SDX ergonomics is perfectly suited for all existing scanner tunnel.

Thanks to the breath hold methods, the scanner images are not altered by respiratory movements ensuring higher quality and an optimized dosimetric planning.

Treatment

For each radiotherapy session, the patient realizes several breath holds lasting to about 20 seconds. The video feed back is indicating to the patient when to start and stop the breath hold.

95% of patients are able to handle this method, whatever respiratory pathologies suffered by patients. Patient's active involvement is an important motivation aspect that participates to the success of the complete treatment

User references

For clinical references and user feedback on the system click here

http://www.sdx.fr/presentation.php?cat=6

Click here to read more about the systems technical information

http://www.sdx.fr/presentation.php?cat=2&rub=19