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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03226925
Other study ID # 2017/23MAI/294
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date June 30, 2017
Est. completion date June 1, 2019

Study information

Verified date July 2019
Source Cliniques universitaires Saint-Luc- Université Catholique de Louvain
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Mechanical ventilation can be used to impose a completely regular pattern of breathing frequency and inflation volume on the patient for as long as required. This would considerably improve the reproducibility of the internal motion parameters, and thus facilitate the implementation of respiratory-synchronized techniques such as gating, tracking and four-digital optimization.


Description:

This will be a three-phase analysis :

First, different ventilation modes will be tested and compared on healthy volunteers. This phase will be analysed with a ventilator and with dynamic MRI in order to measure the movement of anatomical structures in each ventilation mode (intra-fraction analysis). Further, we will repeat these exams in order to compare them with the first ones, in order to analyse the reproducibility and baseline shifts (inter-fraction analysis).

Here are the different ventilation modes

- spontaneous breathing

- physiologic ventilation mode :

- shallow ventilation mode

- slow ventilation mode

- Jet Ventilation mode

Second phase will be done with patients that are intended to have a radiation treatment for thoracic or upper abdominal tumors. All the previous ventilation modes will be analysed during repeated MRI, again in order to perform intra- and inter-fraction analysis of the tumor motion.

Third phase also concerned patients intended to have a radiation treatment. It will be an in-silico-planning analysis in order to quantify dosimetric outcomes of these ventilation modes.


Recruitment information / eligibility

Status Completed
Enrollment 23
Est. completion date June 1, 2019
Est. primary completion date June 1, 2019
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria:

- No comorbidity for healthy volunteers

- Cancer patients with either lung or upper abdomen (liver/pancreas) tumours treated with radiation therapy.

Exclusion Criteria:

- severe lung disease or emphysema

- previous history of pneumothorax

- claustrophobia

Study Design


Intervention

Diagnostic Test:
Non-invasive mechanically-assisted ventilation
Mechanically ventilation will be done through facial masks connected to a respirator. Volunteers/patients are fully conscious during the ventilation.
Dynamic MRI acquisition
Dynamic MRI acquisition are specific dynamic sequences intended to visualise the motion of internal structures (anatomical structures or tumour) under non-invasive mechanically-assisted ventilation
Planning 4D-CT
In order to perform in-silico planning, 4D-CT will be acquired on patients under non-invasive mechanically-assisted ventilation

Locations

Country Name City State
Belgium Cliniques Universitaires Saint-Luc Brussels

Sponsors (1)

Lead Sponsor Collaborator
Cliniques universitaires Saint-Luc- Université Catholique de Louvain

Country where clinical trial is conducted

Belgium, 

Outcome

Type Measure Description Time frame Safety issue
Primary Measure in millimeters of the internal motion during non-invasive mechanically assisted ventilation, based on MRI images This analysis will be based on dynamic MRI analysis made with healthy volunteers and also patients on non-invasive mechanically assisted ventilation. A well defined anatomical structure will be selected for the healthy volunteers while the tumor will be tracked in patients. within 12 months
Secondary Tolerance assessment During all these acquisitions, the tolerance to the non-invasive mechanically assisted ventilation will be assessed by all the participants through a 5-steps scale. within 12 months
Secondary Internal motion reproducibility with non-invasive mechanically assisted ventilation. This analysis will be done by comparing the motion of the internal structures/tumors at two different time points (MRI acquisition at two different time points). All these acquisitions will obviously be done in the same conditions on non-invasive mechanically assisted ventilation. Motion reproducibility will be analysed by comparing the baseline positions of anatomical structures/tumors on MRI images and the measures in millimeters of motion of the same anatomical structures/tumors. Within 12 months
Secondary Dosimetric comparison This dosimetric comparison will be done in order to assess the impact of non-invasive mechanically-assisted ventilation on dose planning and delivery. Difference in dose (in Gy) to organ at risks will specially be compared through the DVH (dose-volume histogram) analysis. within 12 months
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