学习笔记手册.doc

文档介绍：1CT排数的概念
“排”是指CT扫描机探测器的阵列数，一般排数越多，探测器宽度越宽，一次扫描完成的宽度越大。有人将多“排”CT称为多“层”CT(multislice CT，MSCT)，在一般情况下两者的含义相同，即有多少“排”探测器，一次扫描即可完成多少“层”图像的采集。但是,如果每排探测器一次采集重建出2层图像,例如,西门子64层CT,实际探测器是32排,每排出2幅图像,因此一次采集可以形成64层图像。CT技术的不断发展，使MDCT在心脏检查方面，无论在扫描时间上，还是在冠状动脉诊断的敏感性和准确性上都有明显提高，如：64排CT较以往16排CT扫描速度加快，由042～050 s/周提高到033 s/周，一次心脏扫描仅需8～10 s
2DCA参数调节
DCA 进入参数详细调节明细 AcqDetail
Don’t use Scan Times 025sand 04son 05ssystems
Slice Widthis detector element row bundling for one row
Slitis the opening for one slice - Slit-Nis the number of slits
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Tt19890210
If a door switch is provided at the entrance of the scanning room, the door switch
connection signal is connected between terminals 5 and 6 of the DR-SW terminal of
TB3 Unless the door switch is closed, the system is not set up and no X-rays are
output
NOTE: Output for detection 24 VDC 10 mA
1Front/Rear Tube Alignment
(a) Click [Utility] in the Command Box and then click [Engineering];Enter the password and click [OK] The window shown in figure 32-2 is displayed
(c) Select [Alignment] from the window shown in figure 32-2 The interactive window shown in figure 32-3 is displayed
(d) Select [Front/Back] from the "Mode" area in the displayed interactive w