J P Manens

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This work is part of general program of the diagnostic radiation dosage monitoring in the C.H.U. of Brest. The aim of these measurements is to precise the doses delivered to the sensitive organs in infants from one to thirty days of age in the intensive care pediatric Department. We present in this paper the technology used and the results of these(More)
PURPOSE To compare two Intensity Modulated Radiation Therapy (IMRT) techniques for prostate cancer: the Volumetric Modulated Arc Therapy (VMAT) and the "Step and Shoot" technique (S&S). MATERIALS AND METHODS VMAT and S&S plans (RX 18MV) were created and compared (Wilcoxon test) for 10 patients. The dosimetric goal of both treatments was to deliver 46 Gy(More)
INTRODUCTION Between May 2002 and May 2004, eight French comprehensive cancer centres did a prospective nonrandomized study including 200 patients, 100 with cancer of the prostate and 100 with head and neck cancers. Half of each patient group was treated by IMRT and the others by RTC 3D. This clinical study was associated with an economic study and a(More)
PURPOSE To quantify the prostate and seminal vesicles (SV) anatomic variations in order to choose appropriate margins including intrapelvic anatomic variations. To quantify volumetric benefit of image-guided radiotherapy (IGRT). PATIENTS AND METHODS Twenty patients, receiving a total dose of 70 Gy in the prostate, had a planning CT scan and eight weekly(More)
A high performance standard radiotherapy treatment unit could be used to perform stereotactic radiosurgery. The dosimetric aspects of stereotactic irradiation with small size photon beams (energies from 5 to 25 MV produced by electron linear accelerator or gamma-rays produced by cobalt-60 treatment unit) are analyzed. The diameter of circular beams used are(More)
  • Nolwenn Delaby, J Bellec, +6 authors C Lafond
  • Physica medica : PM : an international journal…
  • 2017
PURPOSE This study evaluates the peripheral dose (PD) delivered to healthy tissues for brain stereotactic radiotherapy treatments (SRT) performed with a CyberKnife M6™ Robotic Radiosurgery System and proposes a model to estimate PD before treatment. METHOD PD was measured with thermoluminescent dosimeters. Measurements were performed to evaluate the(More)
Intensity-modulated radiation therapy (IMRT) is essential to have a dose distribution matching with the planning target volume (PTV) in case of concave-shape target. Today IMRT delivery techniques with linear accelerator can be divided into two classes: techniques with fixed gantry, called "step and shoot" (S&S) and "sliding window" (SW), and rotational(More)
  • J P Manens
  • Cancer radiotherapie : journal de la Societe…
  • 1997
Extension of the image network within radiotherapy departments provides the technical infrastructure which is made necessary by the rapid evolution of techniques in the field of diagnosis and treatment in radiotherapy. The system is aimed at managing the whole set of data (textual data and images) that are needed for planning and control of treatments. The(More)
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