dose-volume

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PAUL SCHERRER INSTITUTMulti-slice displayThe simultaneous display of many slices1. Orthogonal or obliqueslices2. Contiguous slicesSGSMP/SRO Physics Lectures 2007PD Dr Tony LomaxTreatment plan evaluation
PAUL SCHERRER INSTITUTDose volume histograms - Why?Disadvantages of 3-ddose distributions1. Huge amount ofinformation to assess2. Difficult to quantify visually3. Difficult to understandrelationship between doseand anatomy in 3-d4. Dose is itself only asurrogate for clinical outcome(Michael Goitein)Example 3-ddosedistribution90 CT slices(>1.5M voxelswithin patientoutline)>500000 voxelswith non-zero dose.>60000 PTV voxels,>70000 criticalstructure voxelsSGSMP/SRO Physics Lectures 2007PD Dr Tony LomaxTreatment plan evaluation
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Page 8 and 9: PAUL SCHERRER INSTITUTColour scales
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