Sentinel lymph nodes are mapped using (99m)Technetium, injected on day of surgery (1-day protocol) or day before (2-day protocol). This retrospective cohort study compares efficacy between the two protocols. Histopathology for all unilateral sentinel lymph node biopsies (March 2012-March 2013) in a single centre were reviewed. Number of sentinel lymph nodes, non-sentinel lymph nodes and patholo...

The availability of reliable land surface information is crucial for a wide range of applications such as environmental monitoring including essential climate change variables, or agroeconomical aspects for a sustainable land management. Compared to optical remote sensing data, radar sensors can provide datasets with regular coverage of a specific area without suffering from missing images beca...

The ESA Sentinels constitute the first series of operational satellites responding to the Earth Observation needs of the EU-ESA Global Monitoring for Environment and Security (GMES) programme. The GMES space component relies on existing and planned space assets as well as on new complementary developments by ESA. This paper describes the Sentinel-1 mission, an imaging synthetic aperture radar (...

The dispersion of the optimal estimate of a subsidence motion is determined, and compared with that of Permanent Scatterers, when the targets are progressively decorrelating due to Brownian motion. Approximately, with N consecutive images and revisit time T, the interferogram stack results are equivalent to PS's, if the pixel count in the window grows with N2T, independently of the frequency. I...

This paper describes the data processing and analysis procedure implemented by the authors to analyse Sentinel-1 data. The procedure is an advanced Differential Interferometric SAR (DInSAR) technique that generates deformation maps and time series of deformation from multiple SAR images acquired over the same site. The second part of the paper illustrates the results of the procedure. The first...

Capturing and identifying field-based agricultural activities, such as the start, duration end of irrigation, together with crop sowing/germination, growing period time harvest, offer informative metrics that can assist in precision activities addition to broader water food security monitoring efforts. While optically based band-ratios, normalized difference vegetation index (NDVI) (NDWI), have...

This study aims to propose an operational approach map irrigated areas based on the synergy of Sentinel-1 (S1) and Sentinel-2 (S2) data. An application is proposed at two sites in Europe—in Spain Italy—with climatic contexts (semiarid humid, respectively), with objective proving essential role multi-site training for a robust methodologies. Several classifiers are separate rainfed areas. They s...

This paper is focused on deformation monitoring using a Persistent Scatterer Interferometry technique and the interferometric SAR data acquired by the Sentinel-1 satellite of the European Space Agency. The first part of the paper describes the procedure used to process and analyze Sentinel-1 interferometric SAR data. Two main approaches are described. The first one is a simplified Persistent Sc...