主束,CR,DR,拍片机,U=125KV,N=200,k=5.2,p=0.1mGy/wk,T=1
D(m)
B-1
铅(mm)
砼(mm)
1.5
4622.22
2.57
196
1.6
4062.5
2.51
193
1.7
3598.62
2.46
189
1.8
3209.88
2.41
185.6
1.9
2880.89
2.36
182.5
2.0
2600
2.32
180
2.1
2358.28
2.28
176.9
2.2
2148.76
2.23
174.2
2.3
1965.98
2.2
171.7
2.4
1805.56
2.16
169.3
2.5
1664
2.13
167
2.6
1538.47
2.09
164.8
2.7
1426.62
2.06
162.7
2.8
1326.54
2.03
160.6
2.9
1236.63
2.0
158.6
3.0
1155.56
1.97
156.7
3.1
1082.21
1.95
154.9
3.2
1015.63
1.92
153.1
3.3
955.01
1.89
151.4
3.4
899.66
1.87
149.7
3.5
848.98
1.85
148.1
3.6
802.47
1.82
146.5
散射,CR,DR,拍片机,U=125KV,N=200,k=0.46,p=0.1mGy/wk,T=1
D(m)
B-1
铅(mm)
砼(mm)
1.5
408.89
1.8
133.8
1.6
359.38
1.74
130.2
1.7
318.34
1.69
126.8
1.8
283.95
1.64
123.6
1.9
254.85
1.59
120.6
2.0
230
1.55
117.7
2.1
208.62
1.51
115
2.2
190.09
1.47
112.4
2.3
174
1.43
110
2.4
159.8
1.4
107.6
2.5
147.2
1.37
105.3
2.6
136.1
1.33
103.2
2.7
126.2
1.3
101.1
2.8
117.35
1.27
99.1
2.9
109.4
1.25
97.2
3.0
102.3
1.22
95.4
3.2
89.85
1.17
91.9
3.3
84.49
1.14
90.2
3.4
79.59
1.12
88.6
3.5
75.11
1.1
87
3.6
70.99
1.07
85.5
主束,胃肠机,U=100KV,N=150,k=5.9,p=0.1mGy/wk,T=1
D(m)
B-1
铅(mm)
砼(mm)
1.5
3933.34
2.28
146.5
1.6
3457.04
2.23
143.4
1.7
3062.29
2.18
140.5
1.8
2731.49
2.14
137.8
1.9
2451.53
2.1
135.2
2.0
2212.5
2.06
132.8
2.1
2006.8
2.02
130.5
2.2
1828.52
1.98
128.3
2.3
1672.97
1.95
126.2
2.4
1536.46
1.91
124.2
2.5
1416
1.88
122.3
2.6
1309.18
1.85
120.4
2.7
1214
1.82
118.7
2.8
1128.83
1.79
117
2.9
1052.32
1.76
115.4
3.0
983.34
1.74
113.8
3.1
920.92
1.71
112.3
3.2
864.26
1.69
110.9
3.3
812.68
1.66
109.4
3.4
765.57
1.64
108.1
3.5
722.45
1.62
106.8
3.6
682.87
1.6
105.5
散射,胃肠机,U=100KV,N=150,k=0.46,p=0.1mGy/wk,T=1
D(m)
B-1
铅(mm)
砼(mm)
1.5
204.45
1.29
85.98
1.6
179.69
1.24
83.1
1.7
159.2
1.19
80.4
1.8
141.98
1.15
77.9
1.9
127.43
1.11
75.5
2.0
115
1.07
73.3
2.1
104.31
1.04
71.2
2.2
95.05
1
69.2
2.3
86.96
0.97
67.3
2.4
79.87
0.94
65.5
2.5
73.6
0.91
63.8
2.6
68.05
0.88
62.2
2.7
63.1
0.86
60.6
2.8
58.7
0.83
59.1
2.9
54.7
0.81
57.7
3.0
51.12
0.78
56.3
3.1
47.87
0.76
55
3.2
44.93
0.74
53.8
3.3
42.3
0.72
52.6
3.4
39.8
0.7
51.4
3.5
56.33
0.68
50.3
3.6
35.5
0.66
49.2
散射 次级,DSA,U=100KV, N=100 k=3.8,p=0.1mGy/wk,T=1
D(m)
B-1
铅(mm)
砼(mm)
1.5
1688.89
2.11
136.1
1.6
1484.375
2.06
132.9
1.7
1314.88
2.01
129.9
1.8
1172.84
1.97
127.1
1.9
1052.64
1.93
124.5
2.0
950
1.89
122
2.1
861.68
1.85
119.7
2.2
785.13
1.81
117.4
2.3
718.34
1.78
115.3
2.4
659.73
1.74
113.3
2.5
608
1.71
111.3
2.6
562.13
1.68
109.5
2.7
521.27
1.65
107.7
2.8
484.7
1.62
106
2.9
451.85
1.59
104.3
3.0
422.23
1.57
102.7
3.1
395.43
1.54
101.2
3.2
371.1
1.52
99.7
3.3
348.95
1.49
98.3
3.4
328.72
1.47
96.9
3.5
310.21
1.45
95.5
3.6
293.21
1.43
94.2
U=90KV, N=100 k=0.95,p=0.1mGy/wk,T=1,透视,小C臂等
D(m)
B-1
铅(mm)
砼(mm)
1.5
422.23
1.17
85.1
1.6
371.1
1.13
82.5
1.7
328.72
1.09
80
1.8
293.21
1.06
77.7
1.9
263.16
1.03
75.6
2.0
237.5
0.99
73.5
2.1
215.5
0.96
71.6
2.2
196.29
0.94
69.8
2.3
179.6
0.91
68.1
2.4
164.93
0.89
66.5
2.5
152
0.86
64.9
2.6
140.54
0.84
63.4
2.7
130.32
0.82
62
2.8
121.18
0.8
60.6
2.9
112.96
0.78
59.3
3.0
105.56
0.76
58.1
3.1
98.86
0.74
56.9
3.2
92.78
0.72
55.8
3.3
87.24
0.71
54.7
3.4
82.18
0.69
53.6
3.5
77.56
0.67
52.6
3.6
73.31
0.66
51.6
U=70KV, N=200 k=0.049,p=0.1mGy/wk,T=1,牙片机
D(m)
B-1
铅(mm)
砼(mm)
1.5
43.56
0.3
29
1.6
38.29
0.28
27.6
1.7
33.91
0.27
26.3
1.8
30.25
0.25
25.1
1.9
27.15
0.24
24
2.0
24.5
0.23
22.9
2.1
22.23
0.22
21.9
2.2
20.25
0.21
21
2.3
18.53
0.2
20.2
2.4
17.02
0.19
19.4
2.5
15.68
0.18
18.6
2.6
14.5
0.17
17.9
2.7
13.45
0.163
17.2
2.8
12.5
0.16
16.6
2.9
11.66
0.15
16
3.0
10.89
0.144
15.4
3.1
10.2
0.138
14.8
3.2
9.57
0.132
14.3
3.3
9
0.127
13.8
U=30KV, N=300 k=0.049,p=0.1mGy/wk,T=1,乳腺
D(m)
B-1
铅(mm)
砼(mm)
1.3
86.99
0.038
4.3
1.4
75
0.036
4.1
1.5
65.34
0.035
3.9
1.6
57.43
0.033
3.7
1.7
50.87
0.031
3.5
1.8
45.37
0.03
3.34
1.9
40.72
0.029
3.2
2.0
36.75
0.028
3.06
2.1
33.34
0.027
2.94
2.2
30.38
0.026
2.82
2.3
27.79
0.025
2.72
2.4
25.52
0.024
2.62
2.5
23.52
0.023
2.52
2.6
21.75
0.022
2.43
2.7
20.17
0.0211
2.34
2.8
18.75
0.0204
2.26
2.9
17.48
0.0198
2.19
3.0
16.34
0.19
2.11
U=120KV, N=100 k=5.9,p=0.1mGy/wk,T=1,CT
D(m)
B-1
铅(mm)
砼(mm)
1.5
2622.23
2.5
194.7
1.6
1.7
2041.53
2.4
188.2
1.8
1.9
2.0
1475
2.26
179.6
2.1
2.2
1219.01
2.18
174.6
2.3
2.4
2.5
944
2.07
167.9
2.6
2.7
809.33
2
163.9
2.8
2.9
3.0
655.56
1.92
158.4
3.1
3.2
576.18
1.86
155
3.3
3.4
3.5
481.64
1.79
150.3
3.6
U=140KV, N=100 k=5.9,p=0.1mGy/wk,T=1,CT
D(m)
B-1
铅(mm)
砼(mm)
1.5
2622.23
2.5
220.8
1.6
1.7
2041.53
2.4
213.3
1.8
1.9
2.0
1475
2.26
203.431
2.1
2.2
1219.01
2.18
197.8
2.3
2.4
2.5
944
2.08
190.1
2.6
2.7
809.33
2
185.5
2.8
2.9
3.0
655.56
1.92
179.2
3.1
3.2
576.18
1.87
175.3
3.3
3.4
3.5
481.64
1.8
170
3.6