学习笔记手册.doc

F:CT学习资料Aq16 training10_Training_Sheets6_Aseries Super4H_Operation_Software（系统软件，IP信息设置，软件检测）1.CT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(multislice 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0.420.50 s/周提高到0.33 s/周，一次心脏扫描仅需810 s2.DCA参数调节DCA 进入参数详细调节明细 Acq.DetailDont use Scan Times 0.25sand 0.4son 0.5ssystemsSlice Widthis detector element row bundling for one rowSlitis the opening for one slice - Slit-Nis the number of slits支付宝账户名835463891Tt19890210If 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 3. 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 3.2-2 is displayed.(c) Select Alignment from the window shown in figure 3.2-2. The interactive window shown in figure 3.2-3 is displayed. (d) Select Front/Back from the Mode area in the displayed interactive window shown in figure 3.2-3. (e) Select Scan to calculate. The scan start key on the keyboard lights. When the scan start key is pressed, the following operations are performed automatically. 0.75-s/rot. scanning is performed twice. Calculation is performed and the results are displayed. (Refer to figure 3.2-4.) (f) The results are displayed in the Measured Data area. When the dialog window is closed, the results are automatically registered in the Registered Data area. (g) When the result is within the standard range, the alignment is complete. If the result isoutside the standard range, adjust the X-ray tube position based on the displayed movement distance and direction, and then repeat the Scan to calculate procedures after position adjustment is complete. (h) Click Quit to terminate the program. Message area: A message is displayed if an error occurs during processing. 3.2Left/Right Alignment 3.4Calibration Data Acquisition (NRA/air calibration)(1) Starting up the calibration data acquisition command To acquire calibration data, click Utilityat the console scan monitor and select Maintenance Calibration data