dose-volume

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PAUL SCHERRER INSTITUTPlanning criteria4. Homogeneity indices1 D maxis maximumdose in selectedMaxH =volumeDDShaw et al, IJROBP, 27, 1993, 1231-1239DHI =P2 98×D pSGSMP/SRO Physics Lectures 2007100%D pprescription dose2 D 2, D 98dose that 2−Dand 98% of selectedvolume receiveWu et al, IJROBP, 56, 2003, 573-5853D( D−D)2SD i Mean×= ∑viVYoon et al, J. Clin. Med. Phys, 8, 2007, 9-17D pprescription doseD i,v i- dose andvolume of voxel iD meanmean dose inwhole volumeV total volume+ Simple to calculate- Misses areas ofunderdosage- Ignores shape of DVH+ Simple to calculate- Ignores shape of DVH- Difficult to calculatewithout help from TPSsystem+ Based on whole DVHPD Dr Tony LomaxTreatment plan evaluation
PAUL SCHERRER INSTITUTPlanning criteria4. Homogeneity indicesPatient H HI D SD1 1.06 2.08 0.812 1.10 10.7 2.57Patient H HI D SD6 1.16 9.1 2.009 1.09 9.1 2.33Yoon et al, J. Clin. Med.Phys, 8, 2007, 9-17Clinical relevance?SGSMP/SRO Physics Lectures 2007PD Dr Tony LomaxTreatment plan evaluation
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Page 6 and 7: PAUL SCHERRER INSTITUTMethods of di
Page 8 and 9: PAUL SCHERRER INSTITUTColour scales
Page 11 and 12: PAUL SCHERRER INSTITUTInteractivity
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Page 15 and 16: PAUL SCHERRER INSTITUTCalculation a
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Page 23 and 24: PAUL SCHERRER INSTITUTIntermediate
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Page 27 and 28: PAUL SCHERRER INSTITUTPlanning crit
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Page 41 and 42: PAUL SCHERRER INSTITUTOptimisation
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Page 49 and 50: PAUL SCHERRER INSTITUTBiological sc
Page 55 and 56: PAUL SCHERRER INSTITUTPhysical asse
Page 61: PAUL SCHERRER INSTITUTSummary.Plan

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