The Quantitative Analysis of Normal Tissue Effects in the Clinic (QUANTEC) review summarizes the currently available three-dimensional dose/volume/outcome data to update and refine the normal tissue dose/volume tolerance guidelines provided by the classic Emami et al. paper published in 1991. A "clinician's view" on using the QUANTEC information in a responsible manner is presented along with a...

BACKGROUND Recurrence rates following radiotherapy for prostate cancer in the post-operative adjuvant or salvage setting remain substantial. Previous work from our institution demonstrated that published prostate bed CTV guidelines frequently do not cover the pre-operative MRI defined prostate. Inadequate target delineation may contribute to the high recurrence rates, but increasing target volu...

1 Technoimaging, 4001 South, 700 East, Suite 500, Salt Lake City, UT 84107, USA 2 University of Utah, 1450 East, 100 South Salt Lake City, UT 84102, USA. 3 Quantec Geoscience, 146 Sparks Ave, Toronto, Ontario M2H 2S4, Canada. * Corresponding author, E-mail: [email protected] Paradigm change in 3D inversion of airborne EM surveys: case study for oil sands exploration near Fort McMurray,...

The concept of radiation dose-volume effect has been exploited in breast cancer as boost treatment for high risk patients and more recently in trials of partial breast irradiation for low risk patients. However, there appears to be paucity of published data on the dose-volume effect of irradiation on breast tissue including the recently published QUANTEC report. This systematic review looks at ...

Background Oftentimes, patients find trunk asymmetry, including thoracic rib hump, shoulder level difference, more troubling than a significant Cobb angle, as topographical deformity can be readily visualized. Evaluating improvement in these back contour parameters lends to additional criteria by which to assess post-surgical improvement. Quantec raster stereography is recognized as an accurate...

he objective of the present study was to determine, by scanning electron microscopy, the aspect of root canal walls after utilization of different rotary instrumentation systems for root canal preparation. Forty-two single-rooted and straight teeth were divided into six groups, whose root canals were prepared using the following rotary systems: groups 1 and 2 Quantec; groups 3 and 4 Pow-R; grou...

INTRODUCTION Orifice openers or orifice shapers are used to shape the coronal part of the root canals during endodontic treatment. OBJECTIVES The aim of this work was to analyse the cutting efficiency of Quantec Series 2000 system orifice shapers by means of computerised tomography (CT). MATERIALS AND METHODS Mandibular molars were selected, preoperative CT was performed and the cross-secti...

The present study evaluated, in vitro, the temperature alterations on the external root surface during instrumentation with four different rotary systems. A total of 20 extracted human maxillary lateral incisors were instrumented using either the ProFile, MicroMega, Quantec or K3 systems and the thermal alterations on the root surface were recorded by means of three thermocouples attached to th...