STI

Europe/Rome 2021-12-13 15:00:00 2021-12-13 16:00:00 Cosmic Ray Neutron Sensor (CRNS) technology for area-wide soil moisture monitoring by Dr. Hami Said Ahmed Soil and Water Management & Crop Nutrition Laboratory Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture (Vienna, Austria) Global climate change has a major impact on the availability of water resources for agricultural production. Sustainable agricultural productivity to ensure food security requires good agricultural water management. To improve the use of this resource in agriculture, it is imperative to monitor the soil moisture, which is not only a key variable in irrigation management, but also for hydrological modelling, ground water recharge, flood, and drought forecasting. Cosmic Ray Neutron Sensors (CRNS) is a nuclear technology which have the capability to estimate field-scale soil moisture (SM) in large areas up to 20 to 30 ha and appear to become a credible and robust alternative to traditional soil moisture monitoring devices. CRNS technique is based on the detection of natural neutron coming from cosmos. The fast, high-energy incoming neutrons eventually penetrate the soil and then scatter back into the atmosphere. These scattered neutrons lose energy (‘thermalized’) due to collisions mainly with hydrogen atoms which come mostly from soil moisture. The CRNS measures these low-energy neutrons near the soil surface. Because the neutrons are spatially distributed and scatter across large distances in the air, they can monitor soil moisture over vast areas. CRNS technology is a promising tool for area-wide soil moisture monitoring and agricultural water management.   Register in advance for this webinar: https://zoom.us/webinar/register/WN_3GpY5zMHScaLJDC-RfQ9pA After registering, you will receive a confirmation email containing information about joining the webinar.   Virtual Zoom ICTP pio@ictp.it 13 Dec 2021

Europe/Rome 2022-03-21 07:00:00 2022-03-25 21:00:00 Joint ICTP-IAEA Workshop on Medical Physics Aspects of Stereotactic Radiotherapy Techniques | (smr 3566) There is an increasing number of requests from Member States for assistance in the introduction of stereotactic radiotherapy and radiosurgery for intra-and extra-cranial targets. This workshop will assist clinical medical physicists to understand the complexities of this mode of radiotherapy. Modern radiotherapy has substantially increased the use of various forms of Stereotactic Radiotherapy (SRT), including Stereotactic Body Radiotherapy (SBRT) and Stereotactic Radiosurgery (SRS). For these techniques a high radiation dose is delivered in a reduced number of fractions. These treatments are not only performed with specialized, dedicated machines, but also with conventional, non-dedicated linear accelerators equipped with high resolution multi-leaf collimators.   In radiotherapy, accurate dose delivered to the patient is essential. For conventional radiotherapy this has been achieved by internationally adopted codes of practice and standardized radiotherapy techniques. However, many of these techniques are not applicable for stereotactic radiotherapy. This course will instruct the participant on how to ensure the quality of stereotactic radiotherapy to provide patients with safe and effective treatments.   Topics: Justification for using stereotactic radiotherapy (SRT) The physics of SRT with an emphasis on small field dosimetry Simulation and Treatment planning for SRT Treatment delivery of SRT to include the technologies, motion management and image guidance Radiobiology of SRT including fractionation and dose constraints Audits, Clinical trials and quality control Lecturers: E. LINDBÄCK, Karolinska University Hospital, Stockholm, Sweden P. MANCOSU, HUMANITAS Cancer Center, Rozzano, Italy T. RITTER, McGuire VA Medical Center, Richmond, USA Prerequisites: This workshop is for clinically qualified medical physicists (CQMPs as per IAEA publication HHS-25) from United Nations, UNESCO or IAEA Member States who hold a postgraduate-level university degree, preferably in medical physics. The candidate should also have at least 3 years working experience in a hospital and must participate in stereotactic radiotherapy in the clinic. Participants should have an understanding of IAEA TRS-398, "Absorbed dose determination in external beam radiotherapy" and IAEA TRS-483, “Dosimetry of small static fields used in external beam radiotherapy”. The process of selection of participants might include a mandatory written examination. The workshop will be beneficial to clinically qualified medical physicists working in radiotherapy and employing treatment modalities using small fields such as SRT, SBRT and SRS. Registration: There is no registration fee. Seibersdorf, Wien - Austria ICTP pio@ictp.it 21 Mar 2022 - 25 Mar 2022