• Journal of Radiation Research and Radiation Processing
  • Vol. 40, Issue 5, 050302 (2022)
Yuan CHENG1, Zhenghuan LI3, Youlin CHEN2, and Suyu LI2、*
Author Affiliations
  • 1Fuzhou No.1 Hospital Affiliated with Fujian Medical University, Fuzhou 350000, China
  • 2Fujian Maternity and Child Health Hospital, Fuzhou 350005, China
  • 3The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
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    DOI: 10.11889/j.1000-3436.2022-0027 Cite this Article
    Yuan CHENG, Zhenghuan LI, Youlin CHEN, Suyu LI. Setup error and planning target volume boundary in foam-immobilized radiotherapy for breast cancer[J]. Journal of Radiation Research and Radiation Processing, 2022, 40(5): 050302 Copy Citation Text show less
    Breast cancer foam immobilize position
    Fig. 1. Breast cancer foam immobilize position
    CT images of Breast cancer
    Fig. 2. CT images of Breast cancer
    Osseous registration results of mmobilized CT images and CBCT images
    Fig. 3. Osseous registration results of mmobilized CT images and CBCT images
    Frequency distribution histogram of set-up error in X/Y/Z direction
    Fig. 4. Frequency distribution histogram of set-up error in X/Y/Z direction

    患者编号

    No.

    X方向(左右)

    X direction (left-right)

    Y方向(头脚)

    Y direction (the head and foot)

    Z方向(腹背)

    Z direction (the abdomen and back)

    系统误差

    Systematic error

    随机误差

    Random error

    系统误差

    Systematic error

    随机误差

    Random error

    系统误差

    Systematic error

    随机误差

    Random error

    1-0.371.81-0.371.480.903.06
    2-3.180.641.031.64-0.280.59
    3-1.403.14-2.651.07-2.303.55
    4-0.981.400.801.174.151.39
    51.500.880.530.981.630.56
    6-1.780.850.731.350.951.04
    71.280.79-1.431.58-0.450.40
    81.800.442.071.40-0.532.25
    90.431.75-2.212.03-2.674.65
    101.300.610.100.46-2.330.59
    111.300.892.450.441.601.03
    12-3.242.22-1.722.101.581.20
    13-1.521.17-3.601.13-4.560.80
    14-1.131.03-0.101.31-0.431.90
    150.631.023.301.28-0.201.07
    160.530.680.581.761.230.85
    17-1.300.610.582.971.581.00
    180.132.682.031.12-2.134.67
    19-1.331.483.080.46-2.801.41
    200.172.00-0.300.35-2.400.44
    21-2.081.33-1.581.710.434.85
    220.001.350.651.110.151.06
    230.530.290.131.50-0.900.26
    240.681.42-0.340.96-1.241.34
    251.281.403.730.59-0.931.68
    26-1.581.130.420.800.021.37
    272.051.312.231.140.381.20
    280.332.002.930.670.601.99
    29-0.331.850.831.160.631.42
    30-0.380.83-0.171.55-0.301.53
    311.030.32-3.330.74-3.100.92
    Table 1. Individual set-up errorin 31 patients with breast cancer

    坐标方向

    Coordinate direction

    绝对最大值

    Absolute maximum

    绝对最小值

    Absolute minimum

    群体系统误差

    Population systematic error

    群体随机误差

    Population random error

    XX axis4.901.400.67
    YY axis6.401.890.56
    ZZ axis8.701.681.16
    Table 2. Group set-up error in 31 patients with breast cancer

    误差范围

    Error range

    X方向(左右)

    X direction (left-right)

    Y方向(头脚)

    Y direction (the head and foot)

    Z方向(腹背)

    Zdirection (the abdomen and back)

    ≤3 mm116(88.55)104(79.39)99(75.57)
    3~5 mm15(11.45)25(19.08)24(18.32)
    >5 mm0(0.00)2(1.53)8(6.11)
    Table 3. Incidence of set-up errors in 31 breast cancer patients

    X方向(左右)

    X direction (left-right)

    Y方向(头脚)

    Y direction (the head and foot)

    Z方向(腹背)

    Z direction (the abdomen and back)

    1.401.891.68
    δ0.670.561.16
    MPTV / mm3.985.115.02
    Table 4. Set-up errors of breast cancer patients and expand margins of PTV
    Yuan CHENG, Zhenghuan LI, Youlin CHEN, Suyu LI. Setup error and planning target volume boundary in foam-immobilized radiotherapy for breast cancer[J]. Journal of Radiation Research and Radiation Processing, 2022, 40(5): 050302
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