Sentence examples for dose gradient from inspiring English sources

For a gradual dose gradient change of 2.1 Gy/mm or smaller, dose profile degradation appears insignificant for a two-hour elapsed diffusion time.

A potential alternative is treatment with a broadband 50kV X-ray point source, the advantage being its low energy and the consequential steep dose gradient.

The dual resolution phantom uses higher resolution in Bragg peak, area near large dose gradient, or heterogeneous interface and lower resolution in the rest.

We expect that even larger clusters would contain a major proportion of the activity in biopsies with a higher mean absorbed dose and, therefore, an even stronger absorbed dose gradient in such sub-regions.

G-Rg5 or G-Rk1 were diluted with PBS to a final concentration of 100 μmol/L, then added to PCR tubes with Annexin A2 protein, forming a dose gradient from 0.2 μmol/L to 10 μmol/L.

In order to account for degradation of the prescribed dose gradient at the edge of moving target volumes during delivery, patient-specific margins that consist of edge-enhanced dose intensity maps can be constructed[85].

Results of this study indicate that dose measurements (relative to Dmax) in regions of steep dose gradient in the beam axis direction are possible with a precision (2 standard deviations [SDs]) as good as ± 1.2% using the technique.

The device demonstrated good dosimetric capabilities when compared to reference measurements made with ionization chambers and agrees with radiographic film in the steep dose gradient region produced by the collimator edge.

A portal-imaging based quality assurance (QA) system was used to evaluate treatment delivery accuracy, and radiochromic film measurements were used to portal-imaging basedion verification of treatment plan dose accuracy, especially in the steep dose gradient regions between each vertebral target and spinal cord.

The high-dose gradient is common in IMRT, therefore, the true minimum or maximum dose is typically not reliable.

Irrespective of the method chosen for quality assurance, dosimetric verification criteria for IMRT treatment plans are based upon either the analysis of a limited number of points in low-dose gradient areas or the measurement of distances between isodose lines in high-dose gradient areas.