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Table 1 Evaluated dosimetric parameters

From: Exclusion of emphysematous lung from dose-volume estimates of risk improves prediction of radiation pneumonitis

Parameter

 

V2 (cc)

The volume of the lung receiving a dose ≥2 Gy

V5 (cc)

The volume of the lung receiving a dose ≥5 Gy

V10 (cc)

The volume of the lung receiving a dose ≥10 Gy

V20 (cc)

The volume of the lung receiving a dose ≥20 Gy

V30 (cc)

The volume of the lung receiving a dose ≥30 Gy

V2 − LAV2 (cc)

The volume of the lung without LAV receiving a dose of ≥2 Gy

V5 − LAV5 (cc)

The volume of the lung without LAV receiving a dose of ≥5 Gy

V10 − LAV10 (cc)

The volume of the lung without LAV receiving a dose of ≥10 Gy

V20 − LAV20 (cc)

The volume of the lung without LAV receiving a dose of ≥20 Gy

V30 − LAV30 (cc)

The volume of the lung without LAV receiving a dose of ≥30 Gy

LAV2 (cc)

The volume of LAV receiving a dose of ≥2 Gy

LAV5 (cc)

The volume of LAV receiving a dose of ≥5 Gy

LAV10 (cc)

The volume of LAV receiving a dose of ≥10 Gy

LAV20 (cc)

The volume of LAV receiving a dose of ≥20 Gy

LAV30 (cc)

The volume of LAV receiving a dose of ≥30 Gy

V2%

The percentage of lung volume receiving ≥2 Gy

V5%

The percentage of lung volume receiving ≥5 Gy

V10%

The percentage of lung volume receiving ≥10 Gy

V20%

The percentage of lung volume receiving ≥20 Gy

V30%

The percentage of lung volume receiving ≥30 Gy

(V2 − LAV2)∕TLV

The ratio of the lung without LAV receiving ≥2 Gy to the TLV

(V5 − LAV5)∕TLV

The ratio of the lung without LAV receiving ≥5 Gy to the TLV

(V10 – LAV10)∕TLV

The ratio of the lung without LAV receiving ≥10 Gy to the TLV

(V20 – LAV20)∕TLV

The ratio of the lung without LAV receiving ≥20 Gy to the TLV

(V30 – LAV30)∕TLV

The ratio of the lung without LAV receiving ≥30 Gy to the TLV

(V2 − LAV2)∕(TLV – LAV)

The ratio of the lung without LAV receiving ≥2 Gy to the TLV without LAV

(V5 – LAV5)∕(TLV – LAV)

The ratio of the lung without LAV receiving ≥5 Gy to the TLV without LAV

(V10 – LAV10)∕(TLV – LAV)

The ratio of the lung without LAV receiving ≥10 Gy to the TLV without LAV

(V20 − LAV20)∕(TLV – LAV)

The ratio of the lung without LAV receiving ≥20 Gy to the TLV without LAV

(V30 – LAV30)∕(TLV – LAV)

The ratio of the lung without LAV receiving ≥30 Gy to the TLV without LAV

LAV (cc)

Low attenuation volume

LAV%

The ratio of LAV to the total lung volume

TLV – LAV (cc)

Total lung volume without LAV

MLD (Gy)

Mean lung dose

MED (Gy)

Mean dose of the irradiated LAV,

MLWED (Gy)

Mean lung without emphysema dose