论著

mpMRI-TRUS认知融合技术在前列腺靶向穿刺的应用研究

Application of mpMRI-TRUS cognitive fusion technology in targeted prostate puncture

:77-79
 
目的 探讨多参数磁共振成像-经直肠超声(mpMRI-TRUS)认知融合技术引导前列腺穿刺活检的临床应用价值。方法 选取2018 年1月—2020年12月就诊于本院且为前列腺癌疑似患者作为研究对象,分为mpMRI-TRUS组与TRUS组。mpMRI-TRUS组所有病例穿刺活检前均行mpMRI检查,根据MRI结果确定靶向病灶,行mpMRI-TRUS认知融合靶向活检和系统10针活检。TRUS组患者只行系统13针活检,比较两组间前列腺癌的检出率,同时比较mpMRI-TRUS组中靶向活检和系统活检在前列腺癌检出率方面的差异,并对穿刺病理结果进行观察和分析。结果 mpMRI-TRUS组穿刺活检阳性率为43.59%,TRUS组穿刺活检阳性率为33.07%,两组前列腺癌检出率差异无统计学意义。mpMRI-TRUS组中靶向穿刺的单针阳性率、靶向穿刺组织前列腺癌组织占比高于系统穿刺;mpMRI-TRUS组中靶向穿刺阳性率为38.46%,系统穿刺阳性率为42.30%,两者差异无统计学意义。结论 mpMRI-TRUS认知融合技术在前列腺穿刺活检能够以较少的穿刺针数检出前列腺癌,靶向穿刺能提供更多前列腺癌组织,降低前列腺癌穿刺活检的漏诊率。
Objective To explore the clinical application value of multi-parameter magnetic resonance imaging-transrectal ultrasound (mpMRI-TRUS) cognitive fusion technology to guide targeted prostate biopsy. Methods The research objects were patients suspected of prostate cancer from January 2018 to December 2020 and the patients were divided into mpMRI-TRUS group and TRUS group. All cases in the mpMRI-TRUS group underwent mpMRI examination before needle biopsy. The targeted lesions were determined according to the MRI results.And mpMRI-TRUS cognitive fusion targeted biopsy and system 10-needle biopsy were performed. Patients in the TRUS group only underwent a systematic 13-needle biopsy. The detection rate of prostate cancer between the two groups was compared. At the same time, the difference in the detection rate of targeted biopsy and systematic biopsy in the mpMRI-TRUS group was also compared. The pathological results of puncture were observed and analyzed. Results The positive rate of needle biopsy in the mpMRI-TRUS group was 43.59%, and the TRUS group was 33.07%. There was no significant difference in the detection rate of prostate cancer between the two groups. In the mpMRI-TRUS group, the single-needle positive rate and the proportion of prostate cancer tissue were higher than that of system puncture. The positive rate of targeted puncture in the mpMRI-TRUS group was 38.46%, and the system puncture was 42.30%. The difference between the two groups is not statistically significant. Conclusion The mpMRI-TRUS cognitive fusion technology can detect prostate cancer with fewer needles in prostate biopsy. Targeted biopsy puncture can provide more prostate cancer tumor tissues and reduce the missed diagnosis rate of prostate cancer biopsy.
论著

经皮经肝胆囊穿刺引流术联合腔镜胆囊切除术在老年中度急性胆囊炎中的应用观察

Application of percutaneous transhepatic gallbladder puncture and drainage combined with endoscopic cholecystectomy in elderly patients with moderate acute cholecystitis

:27-30
 
目的 探讨老年中度急性胆囊炎患者采用经皮经肝胆囊穿刺引流术与腔镜胆囊切除术联合治疗的效果。方法 本文将2019年2月—2020年2月收治的60例老年中度急性胆囊炎患者作为研究对象,按照随机数字表法分组,对照组30例患者仅采用择期腔镜胆囊切除术治疗,观察组30例患者在对照组的基础上应用经皮经肝胆囊穿刺引流术治疗。统计分析体液免疫指标、细胞免疫指标、手术前后ALP、TBIL、IBLL水平、AMY水平、白细胞计数、VAS评分及并发症发生情况。结果 两组之间ALP、TBIL、IBLL水平、AMY水平、白细胞计数、VAS评分及并发症发生情况相比,观察组低于对照组;体液免疫指标、细胞免疫指标相比,观察组高于对照组,P<0.05。结论 在采用择期腔镜胆囊切除术治疗老年中度急性胆囊炎的基础上联合经皮经肝胆囊穿刺引流术可提升疗效,降低择期腔镜胆囊切除术的风险,有助于患者术后尽快恢复,还可减轻患者的免疫功能损伤情况,改善体液免疫指标,减轻疼痛程度,降低并发症发生率,具有较高的应用价值。
Objective To investigate the effect of combined treatment of percutaneous transhepatic cholecystectomy and endoscopic cholecystectomy in elderly patients with moderate acute cholecystitis. Methods The research objects were 60 elderly patients with moderate acute cholecystitis, grouping according to random number table method, the control group of 30 cases were treated with selective endoscopic cholecystectomy, the observation group of 30 patients were treated with the percutaneous liver gallbladder puncture drainage on the basis of selective endoscopic cholecystectomy. Statistical analysis of humoral immunity, cellular immunity, ALP, TBIL, IBLL levels before and after operation, AMY, white blood cell count, VAS score and complications were conducted. Results The levels of ALP, TBIL, IBLL, AMY, WBC count, VAS score and complications in the observation group were lower than those in the control group. The indexes of humoral immunity and cellular immunity in the observation group were higher than those in the control group (P<0.05). Conclusion Endoscopic cholecystectomy used in the treatment of elderly moderate acute cholecystitis combined on the basis of percutaneous transhepatic gallbladder puncture drainage can improve curative effect, reduce the risk of selective endoscopic cholecystectomy, help patients with postoperative recovery, also can reduce the patient's immune function damage, improve the humoral immunity indexes, relieve pain, reduce the incidence of complications, which has high application value.
临床诊疗

鼻内镜下应用低温等离子高选择性翼管神经分支切断治疗变应性鼻炎患者的疗效观察

:127-130
 
目的 研究鼻内镜下应用低温等离子高选择性翼管神经分支切断治疗变应性鼻炎患者的临床疗效。方法 选取我院2019年1月—2020年12月收治的60例变应性鼻炎患者,随机数字表法分为对照组(30例)和观察组(30例)。对照组行保守治疗,观察组行鼻内镜下低温等离子高选择性翼管神经分支切断术治疗。比较两组治疗前后Lund—Kennedy内镜黏膜形态评分、视觉模拟量表(VAS)评分,分析两组治疗前后炎症细胞因子[血清肿瘤坏死因子-α(TNF-α)、白介素-4(IL-4)、白介素-6(IL-6)]及鼻黏膜功能指标[血管活性常态肠肽(VIP)、鼻腔阻力(NR)、鼻黏膜纤毛传输时间(MTT)、鼻黏膜纤毛输送率(MTR)]变化情况。结果 两组治疗后VAS评分、Lund—Kennedy评分较治疗前降低(P<0.05);观察组治疗后VAS评分、Lund—Kennedy评分低于对照组(P0.05)。两组治疗后TNF-α、IL-4、IL-6水平较治疗前降低(P<0.05);观察组治疗后TNF-α、IL-4、IL-6水平低于对照组(P<0.05)。两组治疗后VIP、NR、MTT水平较治疗前降低(P<0.05),MTR水平较治疗前升高(P<0.05);观察组治疗后VIP、NR、MTT水平低于对照组(P<0.05),MTR水平高于对照组(P<0.05)。结论 鼻内镜下应用低温等离子高选择性翼管神经分支切断术治疗变应性鼻炎疗效显著,可改善鼻腔黏膜功能,减轻炎症反应,值得推广。
论著

异种脱细胞基质在腮腺手术中的应用分析

Analysis of heterogeneous acellular dermal matrix in parotidectomy

:105-108
 
目的 分析异种脱细胞基质在腮腺手术中的应用价值。方法 分析97例在我科行腮腺手术的患者,其中观察组52例在腮腺全部或者部分切除后术腔植入异种脱细胞基质生物膜,另外对照组45例术后术腔未放置任何移植物以及其他自体组织填充于术腔,只给予逐层缝合,对比两组患者手术时间、术后引流总量、引流管拔除时间、术后疼痛程度以及涎腺瘘的发生率。结果 两组患者手术时间无差异,观察组的术后引流总量、引流管拔除时间、术后疼痛程度以及术后涎腺瘘的发生率均少于对照组。结论 异种脱细胞基质置入腮腺术后术腔内,可减少术腔引流管放置的时间,减轻患者术后的不适感,降低涎腺瘘的发生率,病人可获益。
Objective To evaluate the effect of heterogeneous acellular dermal matrix in parotidectomy. Methods Ninety-seven patients underwent parotidectomy in our hospital were divided into two groups, including 52 cases implanted biofilm of heterogeneous acellular dermal matrix in parotid gland cavity after total or partial resection as observation group, and 45 cases of postoperative cavitywere not filled graft or other autologous tissue, only given demixing suture as control group. The operation time, total amount of postoperative drainage, drainage tube removal time, postoperative pain degree and the sialosyrinx incidence were compared between two groups after surgery. Results There was no statistical difference in the operation time between the two groups. The total amount of postoperative drainage, the drainage tube removal time, the postoperative pain degree and sialosyrinx incidence in the observation group were all lower than those in the control group. Conclusion Heterogeneous acellular dermal matrix implantation is an effective method to reduce the time of placing the drainage tube in the operative cavity, relieve the postoperative discomfort, and reduce sialosyrinx incidence after parotidectomy, which can benefit the patients.
论著

应用肾衰康方对慢性肾衰竭患者血清微炎症状态的影响及肾功能保护作用的提升研究

Study on the effect of Shenshuaikang decoction on serum microinflammatory state and renal function protection in patients with chronic renal failure

:97-100
 
目的 分析慢性肾衰竭患者接受肾衰康方治疗对其血清微炎症状态的影响及肾功能的保护作用。方法 将2020年1月—2020年12月作为研究时间段,选取期间广东祈福医院接诊的50例慢性肾衰竭患者,另将随机数字表法作为分组依据,将全部病例分为对照组(行常规治疗,纳入25例)、观察组(加用肾衰康方治疗,纳入25例),对组间中医症状评分、血清微炎症状态、肾功能指标、氧化应激指标展开分析。结果 组间中医症状评分、血清微炎症状态、肾功能指标、氧化应激指标在治疗前无明显差异,P>0.05;观察组中医症状评分、血清微炎症状态、肾功能指标、氧化应激指标在治疗后优于对照组,P<0.05。结论 肾衰康方对改善慢性肾衰竭患者血清微炎症状态、氧化应激水平、临床症状均有较好效果,且能保护肾功能,值得推广。
Objective To analyze the effect of Shenshuaikang decoction on serum microinflammation and renal function in patients with chronic renal failure. Methods From January 2020 to December 2020, 50 patients with chronic renal failure treated by Clifford Hospital were selected, and the random number table method was used for grouping. All cases were divided into control group (n=25) and observation group (n=25). The TCM symptom score, serum microinflammatory state, renal function index and oxidative stress index were analyzed. Results There were no significant differences in TCM symptom score, serum microinflammatory state, renal function index and oxidative stress index between the two groups before treatment, P>0.05; the TCM symptom score, serum microinflammatory state, renal function index and oxidative stress index of the observation group were better than those of the control group after treatment, P<0.05. Conclusion Shenshuaikang decoction has good effect on improving serum microinflammation, oxidative stress level and clinical symptoms of patients with chronic renal failure, and also can protect renal function, which is worthy of promotion.
论著

口腔综合修复技术在牙隐裂患者中的应用分析

Application of comprehensive prosthodontics in patients with cracked teeth

:73-75
 
目的 探讨口腔综合修复技术应用于牙隐裂中的临床疗效,为牙隐裂的治疗路径提供参考依据。方法 我院所接收的牙隐裂患者为试验样本,共52例,选入期间为2019年1月—2020年12月,将其予以随机分组,其中对照组(n=26例)和观察组(n=26例),对照组施以常规治疗,观察组施以口腔综合修复技术治疗,评测各组的临床疗效、SF-36评分、咀嚼功能评分以及临床症状消退时间。结果 观察组总有效率为96.15%,低于对照组76.92%(P<0.05);观察组干预后的疼痛程度评分低于对照组(P<0.05);观察组牙面裂纹消退时间、冷热刺激消退时间、 咀嚼疼痛消退时间均低于对照组(P<0.05)。结论 通过口腔综合修复技术治疗牙隐裂患者,可取得确切疗效,有助于缓解临床症状。
Objective To investigate the clinical effect of comprehensive prosthodontics in the treatment of cracked teeth, and to provide reference for the treatment of cracked teeth. Methods Fifth-two patients with cracked teeth in our hospital from January 2019 to December 2020 were randomly divided into control group (n=26) and observation group (n=26). The control group was treated with conventional treatment, and the observation group was treated with oral comprehensive repair technology. The clinical efficacy, SF-36 score, masticatory function score and the time for symptoms to subside of each group were evaluated. Results The total effective rate of the observation group was 96.15%, which was lower than 76.92% of control group(P<0.05); the pain score of the observation group after the intervention was lower than that of the control group (P<0.05); the tooth surface crack regression time, hot and cold stimulation regression time, masticatory pain regression time of the observation group were shorter than those of the control group (P<0.05). Conclusion Comprehensive prosthodontics treatment for cracked teeth can obtain exact curative effect and help to relieve clinical symptoms.
论著

肝硬化患者临床凝血功能检验中全自动血凝仪测定的应用及临床价值研究

Study on the application and clinical value of automatic blood coagulation apparatus in clinical coagulation function test of patients with cirrhosis

:69-72
 
目的 探讨肝硬化患者临床凝血功能检验中全自动血凝仪测定的应用及临床价值。方法 选取2018年1月—2020年1月我院收治的64例肝硬化患者(肝硬化组),并纳入同期来我院接受健康体检者64例(对照组),应用全自动血凝仪对肝硬化患者临床凝血指标检测。再将肝硬化组患者分为出血组与无出血组,比较对照组与肝硬化组、出血与无出血组、不同肝功能分级患者血小板参数与PT检测结果。结果 与对照组比较,肝硬化组PDW、PT、MPV、INR水平更高,PCT、PLT水平更低(P<0.05);与肝硬化无出血组比较,肝硬化出血组PDW、PT、MPV、INR水平更高,PCT、PLT水平更低(P<0.05);与Child-Pugh A级患者比较,肝硬化Child-Pugh B级与C级患者PDW、PT、MPV、INR水平更高,PCT、PLT水平更低(P<0.05)。结论 在肝硬化患者病情评价中凝血功能检验发挥重要作用,可为患者临床治疗提供有效理论依据,诊断准确率较高,有利于临床治疗措施制定。因此,凝血功能检验应在肝硬化疾病诊断中广泛应用。
Objective To explore the application and clinical value of automatic blood coagulation apparatus in clinical coagulation function test of patients with cirrhosis. Methods A total of 64 patients with cirrhosis admitted to our hospital from January 2018 to January 2020 (cirrhosis group) were selected, and 64 healthy subjects admitted to our hospital during the same period (control group) were included. The clinical coagulation indexes of patients with cirrhosis were detected by automatic blood coagulation apparatus. Patients in cirrhosis group were divided into bleeding group and non-bleeding group; platelet parameters and PT test results were compared between control group and cirrhosis group, bleeding group and non-bleeding group, and patients with different liver function grades. Results Compared with the control group, the levels of PDW, PT, MPV and INR in cirrhosis group were higher, and the levels of PCT and PLT were lower (P<0.05). Compared with liver cirrhosis non-bleeding group, the levels of PDW, PT, MPV and INR were higher in liver cirrhosis with bleeding group, and the levels of PCT and PLT were lower (P<0.05). Compared with Child-Pugh A patients, the levels of PDW, PT, MPV and INR in Child-Pugh B and C patients with cirrhosis were higher, and the levels of PCT and PLT were lower (P<0.05). Conclusion The test of coagulation function plays an important role in the evaluation of patients with cirrhosis, and can provide effective theoretical basis for the clinical treatment of patients with high diagnostic accuracy, which is conducive to the formulation of clinical treatment measures. Therefore, the test of coagulation function should be widely used in the diagnosis of cirrhosis.
论著

超声引导下宫颈癌根治术的应用效果及对患者远期生存率的影响

Application effect of ultrasound-guided radical hysterectomy and its influence on long-term survival rate of patients

:64-68
 
目的 探讨超声引导下宫颈癌根治术的应用效果及对患者远期生存率的影响。方法 选取本院2015年1月—2017年12月共收治的70例宫颈癌患者作为研究对象,将2016年7月—2017年12月纳入的患者作为观察组,2015年1月—2016年6月纳入的患者作为对照组,各35例,给予对照组患者常规腹腔镜根治术,给予观察组患者超声引导定位下腹腔镜宫颈癌根治术联合高强度凝聚超声热凝技术治疗。对比两组患者的治疗效果、远期生存率与复发率以及术后6个月、1年、2年、3年的FACT-G评分情况。结果 两组疾病控制率对比无差异(97.14% vs 85.71%,P>0.05);观察组的治疗总有效率为高于对照组的(85.71% vs 60.00%,P<0.05);观察组和对照组患者1年生存率对比无差异(P>0.05),观察组2年、3年生存率高于对照组(P<0.05),观察组和对照组1年局部复发率对比无差异(P>0.05),观察组的2年、3年局部复发率低于对照组(P<0.05);观察组术后6个月、1年、2年、3年的FACT-G评分高于对照组(P<0.05)。结论 应用超声引导定位下腹腔镜宫颈癌根治术联合高强度凝聚超声热凝技术治疗宫颈癌能够提升患者的治疗效果,减少疾病复发和提高远期生存率,提升患者的生存质量,值得临床应用推广。
Objective To investigate the application effect of ultrasound-guided radical hysterectomy for cervical cancer and its influence on the long-term survival rate of patients. Methods A total of 70 patients with cervical cancer admitted from January 2015 to December 2017 were selected as the research subjects, and the patients enrolled from July 2016 to December 2017 were selected as the observation group, patients from January 2015 to June 2016 as the control group, each with 35 cases. The control group was given conventional laparoscopic radical hysterectomy, and the observation group was given ultrasound-guided laparoscopic radical hysterectomy combined with high-intensity ultrasound coagulation technology. The treatment effect, long-term survival rate, recurrence rate and FACT-G scores 6 months, 1 year, 2 years and 3 years after operation were compared between the two groups. Results There were no significant differences in disease control rates between the two groups (97.14% vs 85.71%, P>0.05); the total effective rate of treatment in the observation group was higher than that in the control group (85.71% vs 60.00%, P<0.05). There was no significant difference in the 1-year survival rate between the observation and the control group (P>0.05). The 2-year and 3-year survival rate of the observation group were higher than that of the control group (P<0.05). There was no significant difference in comparison of 1-year local recurrence rate between the observation group and the control group (P>0.05). The 2-year and 3-year local recurrence rate of the observation group were lower than that of the control group (P<0.05). FACT-G scores in the observation group after surgery at 6 months, 1 year, 2 years, and 3 years were significantly higher than the control group (P<0.05). Conclusion The application of ultrasound-guided laparoscopic radical hysterectomy combined with high-intensity ultrasound coagulation in the treatment of cervical cancer can improve the treatment effect, reduce disease recurrence rate, increase long-term survival rate, and improve the quality of life of patients, which is worthy of clinical application and promotion.
论著

应用神经内镜手术治疗基底节区脑出血的疗效观察

Effect of neuroendoscopic surgery on basal ganglia intracerebral hemorrhage

:44-47
 
目的 分析基底节区脑出血患者接受神经内镜手术治疗的疗效。方法 将2019年6月—2020年8月接诊且行开颅血肿清除术的33例基底节区脑出血患者作为对照组,将同期接诊且行神经内镜手术的33例基底节区脑出血患者作为观察组,对组间美国国立卫生研究院卒中量表(NIHSS)、独立功能量表(FIM)、日常生活能力(ADL)评分、手术情况、血清水通道蛋白4(AQP4)水平、脑水肿体积、并发症情况展开分析。结果 (1)组间NIHSS、FIM、ADL评分在术前无明显差异,P>0.05;术后,观察组NIHSS评分更低,且FIM、ADL评分更高,P<0.05;(2)观察组骨窗大小(2.53±0.66)cm、切口长度(4.22±0.67)cm、术中失血量(47.58±11.25)mL、手术用时(1.58±0.42)h均少于对照组(10.88±1.13)cm、(11.84±2.31)cm、(149.83±33.76)mL、(2.99±0.63)h,且血肿清除率(88.84±9.62)%大于对照组(75.31±7.24)%,P<0.05;(3)观察组术后1周、术后2周、术后1个月时的AQP4水平、脑水肿体积均小于对照组,P<0.05;(4)观察组发生1例并发症(3.03%),对照组发生7例并发症(21.21%),P<0.05。结论 对基底节区脑出血患者进行神经内镜手术治疗,手术创伤小,可以降低AQP4水平,减少脑水肿体积及并发症,提高生活能力,值得推广。
Objective To analyze the curative effect of neuroendoscopic surgery in patients with basal ganglia intracerebral hemorrhage. Methods From June 2019 to August 2020, 33 patients with basal ganglia intracerebral hemorrhage who received craniotomy and hematoma clearance were selected as the control group, and 33 patients with basal ganglia intracerebral hemorrhage who received neuroendoscopic surgery at the same period were selected as the observation group. NIHSS,FIM and ADL scores,details of the surgery, levels of AQP4, brain edema volume and complications were analyzed. Results (1) There were no significant differences in NIHSS, FIM and ADL scores between the two groups before operation, P>0.05; after operation, NIHSS score of the observation group was lower, and FIM and ADL scores were higher, P<0.05. (2) Bone window size of the observation group was (2.53±0.66) cm, incision length was (4.22±0.67) cm, intraoperative blood loss was (47.58±11.25) mL, and operation time was (1.58±0.42) h, which were less than those of the control group [(10.88±1.13) cm and (11.84±2.31) cm, (149.83±33.76) mL, (2.99±0.63) h], and the hematoma clearance rate (88.84±9.62)% was higher than that of the control group (75.31±7.24)%, P<0.05. (3) The AQP4 level and brain edema volume of the observation group 1 week, 2 weeks and 1 month after operation were lower than those of the control group, P<0.05. (4) There was one complication (3.03%) in the observation group and seven complications (21.21%) in the control group,P<0.05. Conclusion Neuroendoscopic surgery for patients with basal ganglia cerebral hemorrhage can reduce the level of AQP4, the volume of brain edema and complications, and improve the ability of life, which is worthy of promotion.
论著

个体化低流速注射方案联合低管电压在低BMI受检者头颈部CTA成像的应用研究

Application of individualized low flow rate injection scheme combined with low tube voltage in head and neck CTA imaging of low BMI subject

:63-67
 
目的 探讨个体化低速率对比剂注射方案联合低管电压扫描在低体质量指数(body mass index,BMI)受检者头颈部CT血管成像的可行性。方法 选取我科2020年1月—2020年11月低BMI受检者头颈部CTA检查90例进行研究,随机分成三组,每组30例。A组80 kV扫描,低流速、低总量注射方案; B组120 kV扫描,高流速、低总量注射方案;C组为120kV扫描条件,高流速、高总量注射方案。对比各组注射流速、注射总量、辐射剂量长度乘积(dose legth product,DLP),评价各组图像的主动脉弓、颈总动脉、基底动脉、胸锁乳突肌中段的CT值、信噪比及对比信噪比,由两名有经验的放射科医生对各组图像质量进行主观评价。结果 图像质量主观评价A、B两组图像评分集中在4分段,C组图像评分集中在3分段,A、B组与C组主观评分比较差异有统计学意义(P<0.05)。A组对比剂注射流速和DLP比B、C组分别下降27.75%、47.10%;A、B组对比剂注射总量较C组下降39.87%,差异有统计学意义(P<0.05)。A组各血管CT值对应比B、C组数值稍高,除主动脉弓CT值外其余血管客观参数对比均有差异(P<0.05)。结论 低BMI受检者头颈部CT血管个体化低流速精准对比剂注射方案联合低管电压扫描技术在获得满足诊断要求图像质量的前提下,既能降低受检者对比剂注射速率和注射风险,又能降低辐射剂量,值得推广应用。
Objective To explore the feasibility of individualized low rate contrast agent injection scheme combined with low tube voltage scanning in CTA imaging of low body mass index(BMI) subjects' head and neck. Methods Ninety cases of head and neck CTA examination of low BMI subjects in our department from January 2020 to November 2020 were selected for the study, and randomly divided into three groups with 30 cases in each group. Group A applied 80 kV scanning, low flow rate and low total volume injection scheme. Group B applied 120 kV scanning, high flow rate, low total volume injection scheme. Group C applied 120 kV scanning, high flow rate and high total volume injection scheme. The injection velocity, injection volume, radiation dose length product (DLP) among three groups were compared. In each image of the aortic arch, common carotid artery, basilar artery and the central part of sternocleidomastoid, the CT value, the signal-to-noise ratio and contrast-to-noise ratio were evaluated. Two experienced radiologists performed image quality evaluation. Results Image quality in group A and B by subjective evaluation got 4 points out of 4, and group C got 3 points out of 4, and there was statistical difference between group A, B and C in subjective evaluation of image quality (P<0.05). The injection velocity and DLP of contrast agent in group A were 27.75% and 47.10% lower than those in group B and C, respectively. The total amount of contrast agent injection in groups A and B was decreased by 39.87% compared with group C, with statistical difference (P<0.05). The corresponding CT values of each vessel in group A were slightly higher than those in group B and C, and there were statistically significant differences in the Objective parameters of other vessels except for aortic arch (P<0.05). Conclusion The combination of individualized low flow rate and precise contrast agent injection scheme with low tube voltage scanning technology for low BMI subject could not only reduce the injection rate and risk of contrast agent, but also reduce radiation dose, on the premise of meeting the diagnostic requirements of image quality. It is worthy of popularization and application.
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