Innovative Non-Irradiating and Non-Invasive Per Fraction Control System in Radiotherapy: Surface-Guided Radiation Therapy Experience of Casablanca Cancer Center

Asmaa Naim; Safae Mansouri; Kamal Saidi; Redouane ELBaydaoui; Mohamed Reda Mesradi

doi:10.3889/oamjms.2021.6230

Authors

Asmaa Naim Mohammed VI University of Health Sciences (UM6SS)
Safae Mansouri Department of Radiation Oncology, Oncology Center of Meknes, Meknès, Morocco
Kamal Saidi Department of Radiotherapy, Casablanca Cancer Center, Cheikh Khalifa Casablanca, Casablanca, Morocco; Laboratory of Sciences and Health Technologies, Hassan First University of Settat, High Institute of Health Sciences, Settat, Morocco
Redouane ELBaydaoui Laboratory of Sciences and Health Technologies, Hassan First University of Settat, High Institute of Health Sciences, Settat, Morocco
Mohamed Reda Mesradi Laboratory of Sciences and Health Technologies, Hassan First University of Settat, High Institute of Health Sciences, Settat, Morocco

DOI:

https://doi.org/10.3889/oamjms.2021.6230

Keywords:

Surface-guided radiotherapy, Setup, Intrafraction, Fast irradiation, Non-invasive irradiation, Cutaneous surface, Positioning, Monitoring

Abstract

Purpose: Evaluation of the added value of radiotherapy guided by the cutaneous

surface in the positioning and monitoring of the radiotherapy

Patients and Methods: This study included 21 consecutive patients treated with an

accelerator dedicated to "True Beam®" stereotactic radiotherapy whose sessions were

monitored by an Optical Surface Monitoring System: "OSMS®". Excluded from our

study were treatments controlled exclusively by radiological imaging (IGRT).

Positioning variabilities were compared between conventional imaging and skin

surface infrared (OSMS) monitoring. Conventional imaging was in the form of

standard radiography (KV) performed during the treatment session or three-

dimensional by a series of Cone Beam computerized tomography (CBCT) scanned

images made at the beginning and end of The total time of the session and

the positioning variability’s in the 3 planes were

14

Results: The results of our study show that the cutaneous surface monitoring allowed

to obtain a faster alignment of the patient with an improvement in the overall time of

the session with a mean at 32% [14.5-49.27%], likewise a sub-millimeter positioning

quality for all locations with a median longitudinal distance of 0.02 cm [0-0.66], 01

cm verticality [0-0.32] and laterality 0.02 cm [0-0.77] This benefit is significantly

greater for cerebral and Head and neck’s localizations

21

Conclusion: Optical Surface Monitoring System (OSMS®) is a non-invasive and non-

irradiating means that allows reliable and fast

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