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Evaluation Plan Deadline for districts that applied for an extension is May 3rd

Districts must submit their proposals for the 2013-14 educator evaluation and support systems by Friday, May 3, 2013.

Home of Connecticut’s educator evaluation and support system

Learn more about how to implement the evaluation model in your district.

Home of Connecticut’s educator evaluation and support system

Learn more about how to implement the evaluation model in your district.

Home of Connecticut’s educator evaluation and support system

Learn more about how to implement the evaluation model in your district.

Home of Connecticut’s educator evaluation and support system

Learn more about how to implement the evaluation model in your district.

This is the home of Connecticut\’s Educator Evaluation and Development system. SEED is Connecticut’s System for Educator Evaluation and Development. It is based on the Connecticut Guidelines for Educator Evaluation, developed by a diverse group of educators in June 2012 and on best practice research from around the country. The system is used for evaluating teachers and administrators. All teachers will be evaluated in four categories, grouped in two major focus areas: Teacher Practice and Student Outcomes. Administrators are evaluated on four components: leadership practice, stakeholder feedback, student learning and teacher effectiveness.

Phantom investigations on CT seed imaging for interstitial brachytherapy

Affiliation

  • 1 University Hospital of Schleswig-Holstein, Clinic of Radiotherapy, Kiel, Germany. [email protected]
  • PMID: 17884213
  • DOI: 10.1016/j.radonc.2007.04.036

Phantom investigations on CT seed imaging for interstitial brachytherapy

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Authors

Affiliation

  • 1 University Hospital of Schleswig-Holstein, Clinic of Radiotherapy, Kiel, Germany. [email protected]
  • PMID: 17884213
  • DOI: 10.1016/j.radonc.2007.04.036

Abstract

Background and purpose: The Braphyqs group (BRAchytherapy PHYsics Quality System, the brachytherapy physicist’s task group of GEC-ESTRO) investigated the quality of CT- and X-ray based seed reconstruction procedures using the Kiel-phantom. In this study systematic phantom investigations on CT post-planning and the results of a mailed multi-centre inter-comparison are presented.

Materials and methods: The phantom was equipped with a test configuration composed of 17 non-radioactive seeds. To investigate the quality of seed reconstruction CT measurements with varying CT parameters and different seed models were carried out. In a mailed multi-centre approach the phantom was sent to six European seed centres. The centres performed a typical CT- or X-ray based post-planning. The coordinates of the reconstructed sources were compared with the known positions in the phantom.

Results: In the systematic study it was found for the used CT scanner and seed models that when the slice thickness or the table index (respectively, an appropriate pitch for helical scans) reaches 4 or 5mm the accuracy of the CT seed reconstruction decreases in longitudinal direction. No influences of scanned field of view, tube current, kV(p), or scan type (axial or spiral) on seed reconstruction accuracy were detected. This finding was confirmed by the multi-centre evaluation. It was demonstrated that the Kiel-phantom is a suitable quality assurance (QA) tool for the assessment of the seed reconstruction accuracy in post-implant procedures and that it is a feasible QA test tool for a mailed multi-centre approach.

Conclusions: QA of seed post-planning is necessary. A trend was observed that when the slice thickness and table index is 4 or 5mm the standard deviation of the reconstructed seeds increases for CT-based post-planning. Individual optimizations can be performed with dedicated phantoms.

QA of seed post-planning is necessary. A trend was observed that when the slice thickness and table index is 4 or 5mm the standard deviation of the reconstructed seeds increases for CT-based post-planning. Individual optimizations can be performed with dedicated phantoms.