Page 42 - 《应用声学》2022年第5期

718 2022 年 9 月

ܦᤴ/(mSs -1 ) ܦᤴ/(mSs -1 ) ܦᤴ/(mSs -1 )
1514 1514 1514
10 1512 10 1512 10 1512
20 1510 20 1510 20 1510
1508 1508 1508
30 1506 30 1506 30 1506
y/mm 40 1504 y/mm 40 1504 y/mm 40 1504
1502
1502
1502
50
1500 50 1500 50 1500
60 60 60
1498 1498 1498
70 1496 70 1496 70 1496
1494 1494 1494
80 80 80
10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80
x/mm x/mm x/mm
(a) 0.4 mmჁԫ (b) 0.6 mmჁԫ (c) 1.0 mmჁԫ
ܦᤴ/(mSs -1 ) ܦᤴ/(mSs -1 )
1525
10 1515 10
20 20 1520
1510
30 30 1515
y/mm 40 1505 y/mm 40 1510
50 50 1505
60 1500 60
1500
70 70
1495 1495
80 80
10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80
x/mm x/mm
(d) 2.0 mmჁԫ (e) 4.0 mmჁԫ
图 11 不同尺寸单病变模型成像
Fig. 11 Imaging of different lesion sizes in single lesion model

ܦᤴ/(mSs -1 ) ܦᤴ/(mSs -1 ) ܦᤴ/(mSs -1 )
1530 1525
10 10 1525 10
1525 1520
20 20 1520 20
1520
30 1515 30 1515 30 1515
y/mm 40 1510 y/mm 40 1510 y/mm 40 1510
50
1505 50 1505 50 1505
60 60 60
1500 1500 1500
70 70 70
1495 1495 1495
80 80 80
10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80
x/mm x/mm x/mm
(a) 1 mmᫎᡰ (b) 2 mmᫎᡰ (c) 3 mmᫎᡰ
ܦᤴ/(mSs -1 ) ܦᤴ/(mSs -1 ) ܦᤴ/(mSs -1 )
1525 1525 1525
10 10 10
1520 1520 1520
20 20 20
30 1515 30 1515 30 1515
y/mm 40 1510 y/mm 40 1510 y/mm 40 1510
50 1505 50 1505 50 1505
60 60 1500 60 1500
1500
70 70 70
1495 1495 1495
80 80 80
10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80
x/mm x/mm x/mm
(d) 4 mmᫎᡰ (e) 5 mmᫎᡰ (f) 6 mmᫎᡰ
图 12 不同间距双病变模型成像
Fig. 12 Imaging with different lesion spacing in dual-lesion model