Octreotide-induced acute life-threatening gallstones after vicarious contrast medium excretion:A case report

BACKGROUND Octreotide is widely used for the treatment of acromegaly,neuroendocrine tumors,and secretory diarrhea.However,long-term octreotide treatment can increase the incidence of gallstones.Vicarious contrast medium excretion(VCME)through the hepatobiliary system is well known.However,few studies have reported octreotide-induced acute gallstones following VCME.CASE SUMMARY A 69-year-old man presented with left lower back pain and hematuria caused by a fall.The patient had a history of polycystic kidney disease.VCME occurred following renal artery embolization for a ruptured polycystic kidney.After 5 d of treatment with octreotide,the patient developed acute gallstones and intrahepatic cholestasis which further induced pancreatitis and cholangitis.He was discharged after hemodialysis,antibiotics,and supportive treatments.CONCLUSION For patients with a high-risk of VCME,octreotide should be cautiously administered and carefully monitored.

Introduction of Manganese Oxide into Carbon Nanotubes for the Potential Applications as a Contrast Medium

Manganese compound with evident toxicity is widely employed as the contrast medium for clinicalexaminations such as magnetic resonance imaging(MRI).In the present work,a feasible way with the applica-tion of vacuum impregnation and rotary evaporation was proposed to introduce manganese chloride hydrate intothe inner cavities of template - synthesized carbon nanotubes(CNTs),and then a process of alkali treatmentwas used to liberate the loaded CNTs from the template.It is notable that the alkali attack in the presence ofresidual oxygen also resulted in a series of changes in chemical compositions of guest substances,and the ulti-mate compound of manganese was found to be manganese oxide(Mn3O4) by X-ray diffraction and transmissionelectron microscopy.Determinations of energy dispersive spectrum under scanning electron microscopy showeda high-content filling(more than 50 wt%) of Mn3O4 in the loaded CNTs.This work developed a feasible andconvenient way for the encapsulation of guest substances to reduce bio-toxic effects.

Prevention Strategies of Contrast Medium Induced Nephropathy (CIN): A Review of the Current Literature

Contrast medium induced nephropathy is the third most common cause of renal failure for inpatients and represents the 10% of all acute kidney injury occurring during hospital-stay. It is associated with prolonged hospitalization, cost increase and, above all, an unfavourable short- and long-term prognosis. Here, the authors discuss about the contrast medium induced nephropathy prevention strategies, from the identification of patients at risk and drugs potentially nephrotoxic, to the hydration with possible administration of drugs that appeared to be, in some contexts, nephron-protective, and finally we analyze the radiological procedure aimed at the correct choice of type and administration modality of the contrast medium according to current literature.

Low contrast medium and radiation dose for hepatic computed tomography perfusion of rabbit VX2 tumor

AIM:To evaluate the feasibility of low contrast medium and radiation dose for hepatic computed tomography(CT) perfusion of rabbit VX2 tumor.METHODS:Eleven rabbits with hepatic VX2 tumor underwent perfusion CT scanning with a 24-h interval between a conventional tube potential(120 k Vp) protocol with 350 mg I/m L contrast medium and filtered back projection,and a low tube potential(80 k Vp) protocol with 270 mg I/m L contrast medium with iterative reconstruction.Correlation and agreement among perfusion parameters acquired by the conventional and low dose protocols were assessed for the viable tumor component as well as whole tumor.Image noise and tumor-to-liver contrast to noise ratio during arterial and portal venous phases were evaluated.RESULTS:A 38% reduction in contrast medium dose(360.1 ± 13.3 mg I/kg vs 583.5 ± 21.5 mg I/kg,P < 0.001) and a 73% decrease in radiation dose(1898.5 m Gy·cm vs 6951.8 m Gy·cm) were observed.Interestingly,there was a strong positive correlation in hepatic arterial perfusion(r = 0.907,P < 0.001;r = 0.879,P < 0.001),hepatic portal perfusion(r = 0.819,P = 0.002;r = 0.831,P = 0.002),and hepatic blood flow(r = 0.945,P < 0.001;r = 0.930,P < 0.001) as well as a moderate correlation in hepatic perfusion index(r = 0.736,P = 0.01;r = 0.636,P = 0.035) between the low dose protocol with iterative reconstruction and the conventional protocol for the viable tumor component and the whole tumor.These two imaging protocols provided a moderate but acceptable agreement for perfusion parameters and similar tumorto-liver CNR during arterial and portal venous phases(5.63 ± 2.38 vs 6.16 ± 2.60,P = 0.814;4.60 ± 1.27 vs 5.11 ± 1.74,P = 0.587).CONCLUSION:Compared with the conventional protocol,low contrast medium and radiation dose with iterative reconstruction has no significant influence on hepatic perfusion parameters for rabbits VX2 tumor.

Preliminary clinical application of an adaptive iterative statistical reconstruction algorithm inhead and neck computed tomography angiography with low tube voltage and a low concentration of contrast medium

Objective To evaluate the feasibility of using a low concentration of contrast medium(Visipaque 270 mg I/m L), low tube voltage, and an advanced image reconstruction algorithm in head and neck computed tomography angiography(CTA).Methods Forty patients(22 men and 18 women; average age 48.7 ± 14.25 years; average body mass index 23.9 ± 3.7 kg/m2) undergoing CTA for suspected vascular diseases were randomly assigned into two groups. Group A(n = 20) was administered 370 mg I/m L contrast medium, and group B(n = 20) was administered 270 mg I/m L contrast medium. Both groups were administered at a rate of 4.8 m L/s and an injection volume of 0.8 m L/kg. Images of group A were obtained with 120 k Vp and filtered back projection(FBP) reconstruction, whereas images of group B were obtained with 80 k Vp and 80% adaptive iterative statistical reconstruction algorithm(ASi R). The CT values and standard deviations of intracranial arteries and image noise on the corona radiata were measured to calculate the contrast-to-noise ratio(CNR) and signal-to-noise ratio(SNR). The beam-hardening artifacts(BHAs) around the skull base were calculated. Two readers evaluated the image quality with volume rendered images using scores from 1 to 5. The values between the two groups were statistically compared.Results The mean CT value of the intracranial arteries in group B was significantly higher than that in group A(P < 0.001). The CNR and SNR values in group B were also statistically higher than those in group A(P < 0.001). Image noise and BHAs were not significantly different between the two groups. The image quality score of VR images of in group B was significantly higher than that in group A(P = 0.001). However, the quality scores of axial enhancement images in group B became significantly smaller than those in group A(P< 0.001). The CT dose index volume and dose-length product were decreased by 63.8% and 64%, respectively, in group B(P < 0.001 for both).Conclusion Visipaque combined with 80 k Vp and 80% ASi R provided similar image quality in intracranial CTA with 64% radiation dose reduction compared with the use of Iopamidol, 120 k Vp, and FBP reconstruction.

Role of contrast-enhanced serial/spot abdominal X-rays in perioperative follow-up of patients undergoing abdominal surgery:An observational clinical study

BACKGROUND Many imaging methods such as ultrasonography,computed tomography(CT),magnetic resonance imaging,and endoscopy are used to identify the problems or complications that occur in the perioperative period and to determine the appropriate therapeutic approach.Specialists at surgical clinics and intensive care units sometimes need diagnostic procedures that can give quick results or reveal unexpected results.In particular,rapid on-site evaluation of patients followed under intensive care conditions has several advantages.AIM To determine the problems developing in patients in the perioperative period by contrast-enhanced abdominal X-ray(CE-AXR),revealing their current status or defining the effectiveness of CE-AXR.METHODS The files of the patients who underwent hepatopancreatobiliary or upper gastrointestinal surgery,whose CE-AXR film was taken,were reviewed retrospectively.Abdominal X-ray radiographs taken after ingestion of a watersoluble contrast agent(iohexol,300 mg,50 cc vial)and its application in a drain,nasogastric tube,or stent were evaluated.The contribution of the data obtained in patients who underwent CE-AXR to the diagnosis,follow-up,and treatment processes and the effectiveness of the application were investigated.RESULTS CE-AXR was applied to 131 patients in our clinic,most of whom underwent hepatopancreatobiliary or upper gastrointestinal surgery.It was determined that the data obtained from CE-AXR films taken in 98(74.8%)of the patients contributed to the diagnosis,treatment,and follow-up expectations and positively affected the clinical processes.CONCLUSION CE-AXR is a simple procedure that can be applied anywhere,especially in intensive care patients and at bedside,with a portable X-ray device.The simplicity of the procedure,less radiation exposure for the patients,less time wastage,reduction in the CT and endoscopy procedure burden and costs,quick results,rapid assessment of the situation,and enabling the monitoring of processes with repetitive procedures are important advantages.X-rays taken will be useful in terms of being a reference value during the follow-up period of the patient and determining the situation in medicolegal processes.

Cerebral pseudoinfarction due to venoarterial extracorporeal membrane oxygenation:A case report

BACKGROUND Neurological complications are common in the management of venoarterial extracorporeal membrane oxygenation(VA-ECMO),with most patients requiring sedation and intubation,limiting the assessment of neurological function.Therefore,we must rely on advanced neuroimaging techniques,such as computed tomography angiography(CTA)and computed tomography perfusion(CTP).Because ECMO changes the normal blood flow pattern,it may interfere with the contrast medium in some special cases,leading to artifacts and ultimately misleading clinical decisions.CASE SUMMARY A 61-year-old man presented to a local hospital with chest tightness and pain 1 d prior to presentation.The patient was treated with VA-ECMO after sudden cardiac and respiratory arrest at a local hospital.For further treatment,the patient was transferred to our hospital.The initial consciousness assessment was not clear,and routine CTP was performed to understand the intracranial changes,which suggested a large area of cerebral infarction on the right side;however,the cerebral oxygen was not consistent with the CTP results,and the reexamination of CTA still suggested a right cerebral infarction.To identify this difference,bedside transcranial Doppler was performed,and the blood flow on both sides was different.By reducing the ECMO flow,CTP reexamination showed that the results were normal and consistent with the clinical results.On day 3,the patient was alert and showed good limb movements.CONCLUSION In patients with peripheral VA-ECMO,cerebral perfusion confirmed by CTP and CTA may lead to false cerebral infarction.

碘对比剂全程化药学服务共识

目的探讨碘对比剂全程化药学服务模式,促进碘对比剂的临床合理使用。方法中国医药教育协会临床合理用药专业委员会和广东省药学会用药评价与临床科研专家委员会组织国内专家,成立《碘对比剂全程化药学服务共识》工作组,针对碘对比剂的发展历程、适应证、禁忌证、不良反应、药物相互作用、特殊人群用药、药学服务等进行文献检索、循证分析和研讨,梳理全程化药学服务的内容与流程,最终形成共识。结果制定的碘对比剂全程化药学服务共识包括检查前对患者、肾功能、合并用药和水化方案的评估,检查中有无发生对比剂外渗或发生(可疑)急性不良反应,检查后的观察时间点和随访等内容,以药学服务流程图展示各阶段的具体工作,并形成用药监护记录表用以记录工作情况。结论本共识构建了碘对比剂全程化药学服务体系,为临床医生、护理人员合理使用该类特殊药品提供了科学依据,也为药师进行相关药学服务提供了参考。

右美托咪定预防造影剂诱导急性肾损伤机制的研究进展

造影剂诱导急性肾损伤(CI-AKI)是在血管内应用造影剂(CM)进行诊断或治疗性血管造影干预后观察到的医源性急性肾损伤(AKI)。造影剂通过肾小管毒性、肾内血管收缩和活性氧(ROS)的过量产生等方面导致肾功能受损。右美托咪定(DEX)是一种选择性α2肾上腺素能受体激动药,具有良好的抗氧化、抗炎作用,在围手术期的器官保护作用日益突显。DEX对患者术后肾功能具有保护作用。本文旨在对DEX对CI-AKI的预防作用、可能机制以及临床应用的研究进展作一综述。

Biliary cystadenocarcinoma diagnosed with real-time contrast-enhanced ultrasonography:Report of a case with diagnostic features

Biliary cystadenocarcinoma is a very rare malignant cystic tumor of the liver,which is often misdiagnosed due to a poor recognition of it.We report a case of a 60-year-old man with biliary cystadenocarcinoma with his real time contrast enhanced ultrasound(CEUS)characteristics compared to those of computed tomography(CT)and magnetic resonance imaging(MRI),which were correlated with the surgical and pathologic findings.Cystic wall enhancement,internal septations and intra-cystic solid portions in the arterial phase were observed on CEUS after contrast agent injection.The enhancement was washed out progressively and depicted as hypo-enhancement in the portal and late phases.CT revealed a large irregular cystic lesion in the left liver lobe with no clear septations and solid components.MRI showed an irregular cystic occupying lesion with septations.

Pulmonary Sequestration: Three Dimensional Dynamic Contrast-enhanced MR Angiography and MRI

In order to evaluate the diagnostic value of three dimentional contrast enhanced MR angiography and MRI for pulmonary sequestration, 5 patients with pulmonary sequestration underwent 3D fast imaging by steady state precession (FISP) with a contrast medium and breath holding following chest radiography, CT and MR scans. The reconstructed MR angiography was performed using maximum intensity projection (MIP) and multiplanar reconstruction (MPR) techniques. It was found that the chest radiography showed pulmonary sequestration as a persistent area of opacity in the posterior basal segment of the left lower lobe, which was close to mediastinum in 2 cases and close to diaphragma in 3 cases. CT revealed a soft issue mass beyond descending aorta and lobar emphysema around the pulmonary sequestration. And the supplying vessel was documented in 2 cases on enhanced CT. MRI demonstrated a hyperintensity mass with respect to normal lung parenchyma on T1WI and T2WI, and the origin of the supplying vessel in 3 cases. The reconstructed CE MRA using MIP or MRP techniques clearly showed the supplying vessel and its course, branches as well as draining vessels. It was concluded that 3D CE MRA of demonstrating the supplying and draining vessels to pulmonary sequestration, together with plain MRI, can provide a diagnosis and aid in surgical planning without the need for DSA.

对比剂个性化在肝脏增强CT扫描的初步研究

目的探讨对比剂个性化在肝脏增强CT应用的图像质量及可重复性。方法肝脏三期增强受检者以个性化方案扫描,评价图像质量及肝实质期强化效应可重复性。结果192例受检者实际单位体重碘剂量(374.8±52.1)mgl/Kg,实际注射碘流率(1138.0±130.9)mgl/s,有效碘总量(21320.0±3017.7)mgl,肝脏EU肝实质期为(53.2±7.0)Hu。主动脉强化、动脉期时机、肝实质期强化满足诊断分别约89.06%、94.3%、97.9%;医师间主动脉强化(χ^(2)=3.333)与扫描时机(χ^(2)=1.833)、肝实质期强化效应(χ^(2)=7.667)评价未见显著差异(均P≥0.05),医师评价高度一致(kappa值分别为0.861,0.803,0.914,均P=0.000),样本均数与50Hu比较未见统计差异(t=1.745,P=0.083),变异系数为13.13%,其中16例受检者两次扫描肝实质EU分别为(49.8±6.4)Hu、(50.3±6.7)Hu,差值均数(-0.5000±2.8432)Hu与0比较未见统计差异(t=-0.703,P=0.493)。结论对比剂个性化扫描的肝脏图像质量优良、可重复性较好,易于推广应用。

基于音频比对监测的中波转播台实际应用分析

随着中波转播台技术的发展,音频信号的高质量传输和监测变得至关重要。光电转换技术为信号传输带来高保真和低干扰的优势,但在传输过程中也可能遇到挑战,如介质不均匀性导致的细小干扰。音频比对监测技术能有效监控和保证广播内容的准确性和真实性,利用先进的算法如梅尔频率倒谱系数(Mel Frequency Cepstral Coefficents,MFCC)来分析信号的质量。文章主要分析了音频比对监测的功能、原理及其在中波转播台的应用,以期通过中波转播平台进行音频监测来减少人为错误,降低故障率。

食用菌培养基废料取代商品有机肥茶园对比试验

茶园长期偏施化肥容易引起土壤板结,导致茶叶产量品质双双下降,将袋料黑木耳培养基废料作基肥有机肥施入茶园后,效果良好。为对茶园推行新的施肥方式提供理论依据,试验比较了木耳培养基废料取代商品有机肥对茶园产量、肥力及茶叶品质的影响。结果显示:茶园采用“食用菌基废料+复合肥+尿素”的施肥方式效果较好,其产量和品质略高于“商品有机肥+复合肥+尿素”施肥方式,显著优于无机化肥施肥方式(常规施肥方式);通过适当的食用菌基废料腐熟还田,可显著提高土壤的有机质含量,有效提升茶园土壤的微环境。

Hemodynamic and morphologic changes of peripheral hepatic vasculature in cirrhotic liver disease: A preliminary study using contrast-enhanced coded phase inversion harmonic ultrasonography

AIM: To provide the useful information for the diagnosis of liver cirrhosis by observing the morphology of peripheral hepatic vessels and the hemodynamics of microbubble arrival time in these vessels.METHODS: Twenty-one subjects including 5 normal volunteers and 16 patients (liver cirrhosis, n=10;chronic hepatitis, n=6) were studied by contrast-enhanced coded phase inversion harmonic sonography (GE LOGIQ9 series) using a 6-8 MHz convex-arrayed wide-band transducer. The images of peripheral hepatic artery,portal and hepatic vein were observed in real-time for about 2 min after intravenous injection of Levovist. The time when microbubbles appeared in the peripheral vessels (microbubble arrival time) was also recorded. The morphologic changes of peripheral hepatic vasculature were classified as marked, slight, and no changes based on the regularity in caliber, course, ramification, and the delineation of vessels compared to normal subjects.RESULTS: The microbubble arrival time at peripheral artery, portal, and hepatic vein was shorter in cirrhotic patients than in chronic hepatitis patients and normal subjects. The marked, slight and no morphologic changes of peripheral hepatic vasculature found in 5 (5/6,83.3%), 1 (1/6, 16.7% ), and 0 (0/6, 0%) liver cirrhosis patients, respectively, and in 1 (1/10, 10%), 6 (6/10,60%), and 3 (3/10, 30%) chronic hepatitis patients,respectively. There was a significant difference between the two groups (P＜0.001).CONCLUSION: Evaluation of the hemodynamics and morphology of peripheral hepatic vasculature by contrast-enhanced coded pulse inversion harmonic sonography can provide useful information for the diagnosis of liver cirrhosis.

Differentiation between malignant and benign nodules in the liver: Use of contrast C^3-MODE technology

AIM: To investigate the value of contrast-enhanced C3-MODE technology in differentiating malignant nodules of liver from the benign ones.METHODS: Forty-six nodules in 36 patients (29 men and 7 women) were studied by contrast-enhanced C3-MODE technology and contrast-enhanced CT in 1 wk before the biopsy or operation. A Iow MI monitor and a high MI flash imaging were intermittently performed. After the injection of contrast agent, the period from 10 to 30 s and the time later than 100 s were respectively defined as early arterial phase and the late phase. The vascularities of the liver nodules in the two phases were combined for differential diagnosis. Corresponding to the pathological diagnosis,the accuracy, sensitivity and specificity of contrastenhanced C3-MODE technology were compared to those of contrast-enhanced CT.RESULTS: By C3-MODE technology, 33 of the 46 liver nodules were demonstrated as defected area in the late phase and were diagnosed as malignant tumors. Of them,28 with hypervascularity in the early arterial phase were assessed as hepatocellular carcinoma, the other five nodules with rim-like enhancement in the early arterial phase were diagnosed as metastatic tumors. Thirteen nodules were shown as iso or hypervascularity in the late phase as well as centripetal filling in the early arterial phase and we made a diagnosis of hemangioma.Corresponding to the pathological results, the sensitivity,specificity and accuracy of contrast-enhanced C3-MODE technology in differentiating malignant and benign nodules in the liver were 97.0%, 92.3% and 95.7%, respectively.With comparison to those of contrast CT (sensitivity,94.1%; specificity, 91.7%; accuracy, 93.5%), the difference was not significant.CONCLUSION: Contrast-enhanced C3-MODE technology can effectively differentiate malignant liver tumors from the benign nodules. It highly agrees diagnostically with the pathology. We suggest that it provides a new approach for differential diagnosis of liver nodules in addition to contrast-enhanced CT.

Use of carbon dioxide as negative contrast agent for magnetic resonance cholangiopancreatography

AIM: To evaluate the effects of using CO2 as negative contrast agent in decreasing the overlapping on the pancreaticobiliary system from intestinal fluids.METHODS:We evaluated the magnetic resonance cholangiopancreatography(MRCP) images in 117 patients divided into two groups(group 1,without taking gas producing crystals to produce CO2,n=64;group 2,with CO2,n=53)in a 1.5T unit using MRCP sequence.Anatomic locations of intestinal fluids distribution,overlapping with common bile duct(CBD)and pancreatic duct(PD),were evaluated.RESULTS:In the group with CO2,the decrease in distribution of intestinal fluids was significant in the gastric antrum(P=0.001)and duodenal bulb(P<0.001),but not in the gastric fundus and body and in the second portion of the duodenum(P=1.000,P=0.171,and P=0.584 respectively).In the group with CO2,the decrease in overlapping with CBD was significant(P< 0.001),but the decrease in overlapping with PD was not (P=0.106).CONCLUSION:MRCP with carbon dioxide as negative contrast agent would decrease intestinal fluids in the gastric antrum and duodenal bulb,thereby decreasing overlapping with the CBD.

双源CT双能量成像对缺血性卒中介入术后对比剂外渗与出血的早期鉴别

目的 探讨双源CT(dual source computed tomography,DSCT)双能量成像技术对缺血性卒中患者介入治疗后发生对比剂外渗或出血的鉴别诊断价值。方法 回顾性分析165例缺血性卒中患者介入治疗术后,1小时内利用DSCT双能量成像技术行头颅CT扫描,以术后24至72小时的影像学随访检查和最终临床诊断结果为标准评价双能量CT成像鉴别介入术后出血及对比剂外渗的敏感性、特异性、误诊率、漏诊率、阳性预测率、阴性预测率、诊断准确率;并比较双能量CT成像技术与常规CT扫描患者接受的辐射剂量。结果 165例患者中,双能量CT诊断单纯对比剂外渗的敏感性100%、特异性92.38%、误诊率7.62%、漏诊率0、阳性预测值88.24%、阴性预测值100%、诊断准确率95.15%;双能CT诊断对比剂外渗合并出血的敏感性77.14%、特异性99.23%、误诊率0.07%、漏诊率22.86%、阳性预测值96.43%、阴性预测值94.16%、诊断准确率94.55%。颅脑双能量CT扫描患者接受的辐射剂量0.85±0.09m Sv明显低于常规CT平扫1.9±0.27m Sv,差异有显著性(P<0.05)。结论 缺血性卒中患者介入治疗后1小时内行双能量CT扫描对鉴别颅内出血或对比剂外渗有较高的诊断价值,辐射剂量明显低于常规CT平扫,具有较高的临床应用价值。

Molecular interactions between anticancer drugs and iodinated contrast media: An in vitro spectroscopic study

Purpose: The purpose of this study is to assess molecular interactions between several anticancer drugs and an iodinated contrast medium by Fourier transform infrared spectroscopy (FT-IR) and ultraviolet-visible spectroscopy (UV-Vis). Materials and Methods: Iopamidol (IPM) was used as an iodinated contrast medium, and mitomycin C (MTI), epirubicin hydrochloride (EPI), cisplatin (CDDP), 5-fluorouracil (5FU), irinotecan hydrochloride (CPT11), gemcitabine hydrochloride (dFdC), carboplatin (CBDCA), oxaliplatin (1OHP), paclitaxel hydrochloride (TAX) and docetaxel trihydrate (TXT) were used as anticancer drugs. For FT-IR, the purified IPM was mixed stoichiometrically with each anticancer drug as well as with a combination of MTI and EPI. After measuring each separated sample and the mixtures, the spectra of the mixtures were compared with the spectra of the sum of pure samples or the combination. For UV-Vis, IPM and anticancer drugs were dissolved in pure water;subsequently for the titration experiments, the mixtures were prepared by varying the molar ratio. IR absorption corresponds to stretching vibrations between atoms having covalent bonding, whereas UV-Vis spectra depend on molecular dynamics and shapes. Both UV-Vis and IR spectra change when there are molecular interactions such as aromatic ring stacking and hydrogen bonding. Result: IPM exhibited molecular interactions with MTI, EPI, CDDP, dFdC, CBDCA, 1OHP, TAX and TXT, as well as with the combination of MTI and EPI on FT-IR. However, molecular interactions were not observed on UV-Vis. Conclusion: Several anticancer drugs have molecular interactions with IPM, which could be clinically utilized for superselective intraarterial infusion chemotherapy.

CT/MR增强检查中对比剂对新生儿肾功能的影响

目的:探讨电子计算机断层扫描(CT)和核磁共振(MR)增强检查中对比剂对新生儿肾功能的影响及年龄与肾功能指标的相关性。方法:回顾性分析2017年1月至2021年5月郑州大学第一附属医院接受CT/MR检查的81例新生儿临床资料,根据是否实施增强检查分为对比剂组38例和对照组43例,统计并比较两组患儿临床资料、检查时的年龄、体质量及检查不同时间点的年龄、血肌酐(Scr)和肾小球滤过率(GFR),分析新生儿年龄与肾功能指标的相关性。结果:两组患儿性别、是否早产、娩出方式、检查方式、镇静剂应用、原发病分布等比较差异无统计学意义(P>0.05)。两组患儿检查时的年龄、体质量以及检查不同时间点的年龄、Scr、GFR水平比较,差异均无统计学意义(P>0.05)。Spearman相关性分析显示,Scr水平与年龄呈负相关(r=-0.606,P<0.01),GFR水平与年龄呈正相关(r=0.508,P<0.01)。结论:新生儿在CT/MR增强检查中应用对比剂对其肾功能无明显影响,新生儿年龄与Scr水平呈负相关,与GFR水平呈正相关。