Comparative analysis of 16-slice and 8-slice mobile CT multicenter clinical application

doi:10.3877/cma.j.issn.2095-9141.2020.06.005

Abstract

Abstract:

Objective

To compare and analyze the imaging quality and performance characteristics, examination time, labor cost and radiation dose value of 8-silce and 16-slice mobile CT in multi-center clinical application.

Methods

From August 2010 to July 2020, Neurosurgery Department of the Seventh Medical Center, Chinese PLA General Hospital performed 90 059 head scans with 8-slice mobile CT; From March 2017 to July 2020, Neurosurgery Department of the Seventh Medical Center, Chinese PLA General Hospital combined with several hospitals performed 10 969 head scans with 16-slice mobile CT. The patients’head scanning, examination time and labor cost (cumulative time of personnel), and radiation dose value were collected: CT dose index (CTDIvol), dose length product (DLP), effective dose (ED). In addition, the detection values of 64 rows of large CT in 60 cases of the same period were randomly selected for comparison.

Results

(1) Imaging analysis: There were 90 059 cases of 8-slice mobile CT head scanning, including 82 843 cases in the emergency room (91.99%), 7090 cases in the ICU (7.87%) and 126 cases in the operating room (0.14%). There were 10 959 cases of 16-slice mobile CT head scanning, including 8601 cases in the emergency room (78.41%), 879 cases in the ICU (8.01%), 31 cases in the operating room (0.28%), and 1458 cases in the vehicle/ship/aircraft head scanning (13.29%). The imaging quality of the two components is basically the same. Compared with the 8-slice mobile CT group, the 16-slice mobile CT group is equipped with precision guide rail control scanning and shock absorber, with fast scanning speed and less motion artifacts, and with a variety of imaging functions such as plain scanning+enhancement, CT angiography (CTA) and CT perfusion imaging (CTP). (2) Scanning time and radiation dose: There were significant differences in scanning time, labor cost and radiation dose (CTDIvol, DLP, ED) of 16-slice, 8-slice mobile CT and 64-slice large-scale CT (P<0.05).

Conclusion

The 16-slice mobile CT has excellent imaging quality, fast scanning speed and less time consuming, low staff cost and low radiation dose. It has a variety of imaging functions such as plain scanning, enhancement and CTA and CTP.

Key words: Mobile CT, Mobile stroke unit, Cerebral infarction, Brain injury

Zhiqiang Zhang, Yuanchenlu Zhang, Jinhui Cai, Songye Wang, Yanbing Yu, Haifeng Wang, Tong Zhang, Longyi Chen, Zhaolong Peng, Quanle Zheng, Hongtian Zhang, Qiusheng Dai, Chao Xu, Zhili Li, Qiang Yu, Ruxiang Xu. Comparative analysis of 16-slice and 8-slice mobile CT multicenter clinical application[J]. Chinese Journal of Neurotraumatic Surgery(Electronic Edition), 2020, 06(06): 344-349.

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References 25

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类型	例数	脑梗死	脑出血	脑损伤	肿瘤等	CT阴性[例(%)]
16排移动CT	10 969	2 636	2 420	1 512	649	3 752(34.21)
8排移动CT	90 059	24 310	22 341	13 805	5 382	24 357(27.05)

类型	例数	脑梗死	脑出血	脑损伤	肿瘤等	CT阴性[例(%)]
16排移动CT	10 969	2 636	2 420	1 512	649	3 752(34.21)
8排移动CT	90 059	24 310	22 341	13 805	5 382	24 357(27.05)

类型	例数	扫描时间(min)	累计时间(min)
16排移动CT	60	14.15±2.78	37.16±11.44
8排移动CT	60	15.74±3.01^a	40.34±9.77^a
64排CT	60	29.86±6.64^ab	127.73±28.77^ab
F值		220.789	451.129
P值		<0.001	<0.001

类型	例数	扫描时间(min)	累计时间(min)
16排移动CT	60	14.15±2.78	37.16±11.44
8排移动CT	60	15.74±3.01^a	40.34±9.77^a
64排CT	60	29.86±6.64^ab	127.73±28.77^ab
F值		220.789	451.129
P值		<0.001	<0.001

类型	例数	CTDIvol(mGy)	DLP(mGy·cm)	ED(mSv)
16排移动CT	60	33.83±4.67	325.78±79.12	0.75±0.09
8排移动CT	60	79.87±6.57^a	1305.27±167.59^a	2.75±0.35^a
64排CT	60	56.48±7.45^ab	901.59±131.26^ab	1.90±0.28^ab
F值		791.692	845.682	871.373
P值		<0.001	<0.001	<0.001

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