helical-CTDI

Determination of CTDI from time-resolved measurement data for helical CT scans. Here with measurement data from RaySafe X2.

The greastest uncertainty for determination of the CTDI is the number of rotations of the source after a complete scan.

Here a new method is presented to determine the CTDI and the uncertainty. Only the time of a single rotation needs to be known.

In the first release, the following functions have been implemented:

• FindThePeaks(X,m,N)
• FindPeakLocs(X,N,m)
• DrawPeakMarkers(X,P,m,N)
• DrawArea(X,P,m,n)
• CalcDose(X,P,m,n)
• WriteDose(X,P,m,n)
• SetXLimit(X,P,m)
• MoveSum(X,M1,M2)
• PlotDose(X,m)
• PlotDoseSums(X,M1,M2,T)
• PlotPolyCurves(X,M1,M2)
• PolyDraw(W,M1,M2,Z)
• CalcDelta(X,m,Z)
• DeltaTable(X,M2,Z)
• DoseTable(X,M,N)
• Safe2Excel(CTDI100)
• CheckSumAgainstExcel(X,m,zeitidx,samples)
• CalcTotalDose(X)