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期刊信息  
创刊日期：1990年
主管单位：中国人民共和国卫生部
主办单位：中国医学影像技术研究会
　　　　　中国医科大学
承办单位：中国医科大学附属盛京医院
　　　　　辽宁省医学影像学会
编辑出版：《中国临床医学影像杂志》
　　　　　编辑部
刊　　期：月刊
2017 Vol. 28, No. 9
Published: 2017-09-20
 
609 Diagnosis value of high signal in middle cerebral artery on FLAIR and SWI of acute ischemic stroke
XU Kai-xi, CHEN Xin-jian, ZUO Tao-sheng, MA Xian-jun, FENG Guang-kui, BIAN Guang-rong,
Objective: To investigate the value of high signal vascular sign(HVS) at fluid attenuated inversion recovery imaging(FLAIR) and susceptibility weighted imaging(SWI) in 3.0T magnetic resonance for acute ischemic stroke(AIS). Methods: Sixty-two patients of AIS(<72 h) were underwent MRI. We studied the correlation between proximal HVS of AIS, susceptibility vessel sign(SVS) and distal HVS, dilation of vessels around pia mater combined with FLAIR and SWI. Results: There are 39 cases(62.9%) with proximal HVS of middle cerebral artery(MCA), 51 cases(82.2%) with distal HVS, 53 cases(85.5%) with SVS and 49 cases(79.0%) with dilation of vessels around pia mater. It has correlation between HVS at FLAIR and SVS at SWI of the offending vessel(χ2=8.255, P=0.004). There was consistency between distal HVS of MCA and vessels of pia mater around lesions(χ2=0.207, P=0.649>0.05). Conclusion: There are consistency between SVS of MCA and approximal HVS of offending vessels, distal HVS of MCA and vessels of pia mater around lesions. The detection rate of MCA thrombus at SWI is higher than FLAIR. It is very important to optimize the exam process, make the correct treatment plan and prognosis.
2017 Vol. 28 (9): 609-613 [Abstract] ( 1168 ) HTML (1 KB)  PDF  (0 KB)  ( 333 )
613 Ultrasound diagnosis of suppurative thyroiditis: report of one case
YU Shuang, LIU Yan-jun, WANG Xue-mei
2017 Vol. 28 (9): 613-613 [Abstract] ( 570 ) HTML (1 KB)  PDF  (0 KB)  ( 277 )
614 The early evaluation of carotid atherosclerosis in patients with metabolic syndrome by Ultrafast imaging
YANG Ru1, WEI Zong-kai1, LIU Wen1, MA Chun-yan1, YANG Jun1, SHAN Zhong-yan2, LAI Ya-xin2
Objective: To assess the application value of Ultrafast imaging for the early evaluation of carotid functional change in patients with metabolic syndrome. Methods: There were 48 metabolic syndrome cases(metabolic syndrome group), 55 metabolic abnormality cases(metabolic abnormality group) and 50 healthy cases(control group). The inter-media thickness(IMT) and pulse wave velocity(PWV), including the PWV at the beginning of the systole(PWV-BS) and the PWV at the ending of the systole(PWV-ES), were evaluated. Results: IMT, PWV-BS and PWV-ES in the metabolic syndrome group were higher than those in the control group and metabolic abnormality group(P<0.05). Those were no difference between the metabolic abnormality group and control group(P>0.05). Conclusion: The carotid artery elasticity in patients with metabolic syndrome decreased. The UltraFast technique is expected to be a new method to early rapidly evaluate the carotid atherosclerosis in patients with metabolic syndrome.
2017 Vol. 28 (9): 614-614 [Abstract] ( 857 ) HTML (1 KB)  PDF  (0 KB)  ( 242 )
617 Correlation between the ultrasonography findings of non-mass-like breast cancer and its pathologic features
ZHANG Hai-li, LIU Xiao-jing, PANG Hui-yan
Objective: To preliminarily explore the relationship between the ultrasonography findings of non-mass-like breast cancer and its pathologic features. Methods: Sixty-nine female patients with 69 pathologically confirmed non-mass-like breast cancers were enrolled in this study. The ultrasonography features of all the lesions were classified as four types: “duct dilatation”, “sheet low echo”, “local architecture distortion”, and “mixed change.” Pearson Chi-Square test and Fisher’s exact test were performed to compare pathologic features of different ultrasonography types of non-mass-like breast cancer. Results: The proportion of ductal carcinoma in situ(DCIS) in the type of “Duct dilatation” was 81.8%,  and significantly larger than the other three types(P<0.001). No DCIS existed in the type of “mixed change” whose histologic type was all invasive cancer. The type of “local architecture distortion” had only one DCIS(9.1%). The positive rates of human epidermal growth factor receptor-2(HER-2) in the type of “duct dilatation”(72.7%) and “mixed change”(68.8%) were higher than in the type of “sheet low echo”(40.0%) and “local architecture distortion”(27.3%) and the difference was statistically significant on the whole(P=0.035). Axillary lymph node metastases were more commonly seen in the type of“mixed change”(50.0%) than in the type of “duct dilatation”(0.0%), “sheet low echo”(26.7%), and “local architecture distortion”(27.3%) and the overall different was statistically significant(P=0.019). Conclusion: Ultrasonography types of non-mass-like breast cancer have some correlation with histologic type, HER-2 expression and axillary lymph node metastasis.
2017 Vol. 28 (9): 617-619 [Abstract] ( 733 ) HTML (1 KB)  PDF  (0 KB)  ( 144 )
620 Ultrasound elastography for mammary gland hyperplasia in different menstrual cycle
XIA Fei, WU Yu-lian, LU Yong-ping
Objective: To investigate the effect of different menstrual cycle and age on the hardness of mammary gland tissue of proliferative lesions, the elastic modulus values of different anatomical layers of adult female simple proliferative lesions were detected by real-time shear wave elasticity imaging(SWE). Methods: Sixty adult patients with mammary gland hyperplasia were enrolled in our hospital from January to November in 2015. The patients were divided into three groups according to their age. SWE was used to detect the elastic modulus of different menstrual cycles and different anatomical layers in adult female patients with simple proliferative lesions. Results: There was no significant difference in elastic modulus of mammary glands between different menstrual cycles and proliferative lesions(P>0.05). The elastic modulus values(mean value and maximum value) of mammary glands in the same menstrual cycle and proliferative lesions increased with age(P<0.05).
2017 Vol. 28 (9): 620-623 [Abstract] ( 732 ) HTML (1 KB)  PDF  (0 KB)  ( 192 )
624 Correlation between lung cancer EGFR mutation status and CT texture GLCM
LV Chang-sheng, WANG Jin, XU Zhi-jie, WANG Jin-guang
Objective: To investigate correlation between CT gray-level texture features and epidermal growth factor receptor mutation status in lung adenocarcinoma. Methods: Sixty-four adenocarcinoma patients’ clinical and imaging data were studied retrospectively and which were classified into exon 21 mutation group, exon 19 mutation group and wild type group. Using ImageJ software to extract the values of the five characteristics(energy, contrast, inverse difference moment, entropy, autocorrelation) of tumor with axial maximum diameter in chest CT with lung window, then perform single factor analysis of variance of variance and t test for statistic analysis. Results: Wild-type adenocarcinomas had high scores for contrast(mean:  1 027.734) compared with exon 19 mutants(mean:560.127) and exon 21 mutants(mean:331.987). The differences in contrast, inverse difference moment, correlation between exon 21 mutation group, exon 19 mutation group and wild type group all had statistically significant differences(P＜0.05). The difference in contrast between exon 21 mutation group, exon 19 mutation group had statistical significant difference(P=0.007). The solid nodules accounted for 57.8% of EGFR mutant patients, accounting for 47.3% of wild type patients, while the age, lobulation sign, irregular margin and air bronchograms, were not correlated with EGFR mutation rate. Conclusion: Using GLCM to extract texture feature from lung CT images and find Contrast, Correlation, Inverse difference moment to describe EGFR mutations in lung cancer have better results, which could provide some reference value for predicting lung cancer patients with EGFR mutations through quantitative analysis from CT. And there can be as quantitative imaging biomarkers to establish contact between lung cancer imaging and gene mutation.
2017 Vol. 28 (9): 624-627 [Abstract] ( 738 ) HTML (1 KB)  PDF  (0 KB)  ( 156 )
628 Observation of apoptosis of A549 lung cancer in nude mice induced by paeonol combined with#br# 125I seed brachytherapy
DENG Yong-mei, LI Yuan, ZHANG Jin-shan, CHEN Zhan-hang, LIU Shao-yan
Objective: The aim of this study was to detect the apoptosis of A549 lung cancer cells after paeonol combined with 125I seed brachytherapy by 99Tcm-Annexin V imaging and analysis of apparent diffusion coefficient(ADC) values of the magnetic resonance diffusion-weighted imaging(DWI). Methods: Fifty-two nude mice bearing human lung cancer cell line A549 were randomly divided into 4 groups(13 mice in each group). Group A: paeonol treatment alone. Group B: 125I seed brachtherapy alone. Group C: combination of paeonol and 125I seed brachtherapy. Group D: cold seed implantation as the control group. 10~14 days after brachytherapy, all mice were performed DWI and 99Tcm-Annexin V imaging, and then all mice were sacrificed, the tumor weights and dimensions of survived mice were measured, tumor weight inhibition rate was calculated, tumor cell apoptosis was detected by terminal oxynucleotidy transferase mediated dUTP biotin nick end labeling(TUNEL) immunofluorescence. Results: After the intervention of paeonol, 125I seed brachtherapy and their combination therapy, the growth of tumor cells were significantly inhibited, tumor volume and quality decreased obviously compared with the control group, the tumor inhibitory rates were 35.6%, 57.3% and 74.4%, respectively. The difference in positive rate of 99Tcm-Annexin V imaging between group A, B, C and D were statistically significant(χ2=9.35, P=0.025); Compared with group D, paeonol(χ2=4.51, P=0.031), 125I seed brachtherapy(χ2=7.96, P=0.004) and the combination of both(χ2=15.48, P<0.001) all could increased the positive rate of 99Tcm-Annexin V imaging. There were significant differences in the tumor uptake of 99Tcm-Annexin V(T/N) and the ADC values between groups(F=7.218, 6.987, both P<0.05), and the T/N and ADC values in group A, B and C were higher than that in group D, and the rise in group C was especially obvious(all P<0.05). The combination of paeonol and 125I seed brachtherapy enhanced cell apoptosis, and the apoptosis index(AI) between groups had statistically significant difference(F=5.123, P=0.038). The ADC value was correlated with AI and T/N(r=0.748, 0.782, P=0.032, 0.016), and AI was correlated with T/N(r=0.765, P=0.024). Conclusion: Paeonol can enhance the anti-tumor effect combined with 125I seed brachytherapy, the mechanism may be related to induced cell apoptosis. 99Tcm-Annexin V imaging combined with the analysis of ADC value could early effectively detect the apoptosis of tumor cells, thus they as visual have the potential to predict efficacy in vivo.
2017 Vol. 28 (9): 628-632 [Abstract] ( 690 ) HTML (1 KB)  PDF  (0 KB)  ( 180 )
633 The Lauren classification of advanced gastric carcinoma using multi-slice computed tomography
YU Ming-ming1, YU Yi-hui2, ZHANG Bi-feng1, LI Sheng1, LI Qiang1
Objective: To investigate the value of multi-slice computed tomography(MSCT) in Lauren classification of advanced gastric carcinoma. Methods: MSCT imaging findings of 114 patients with advanced gastric cancer proved by operation or gastroscopy biopsy were analyzed retrospectively. All cases were divided into two groups, intestinal-type(IT) and diffuse-type (DT), according to Lauren classification standard. The thickness, long diameters, CT values of portal venous phase, enhancement patterns and surface of the tumor were compared between the two groups. Results: A total of 50 and 64 cases were found in IT and DT gastric carcinoma. The thickness of two groups were (18.42±7.40) mm and (17.17±5.14) mm, the difference was not statistically significant(t=1.07, P=0.29). The long diameters were (50.70±17.29) mm and (60.82±23.33) mm, CT values in portal venous phase(except mucinous adenocarcinoma)(75.75±15.81) HU and (85.80±18.17) HU, enhancement types(homogeneous:inhomogeneous)=(27:23) and (21:43), surface condition of the tumor(flat:ulcer)=(13:37) and (32:32), the differences were statistically significant, respectively(t=-2.57, P=0.01), (t=-3.05, P=0.00), (χ2=5.17, P=0.02), (χ2=6.77, P=0.01). The coincidence rates of lymph node staging and pathological contrast were 84.00% and 81.25% respectively. Conclusion: MSCT has important value in Lauren classification of advanced gastric carcinoma. There are significant differences in the long diameters, CT values in portal venous phase(except mucinous adenocarcinoma), enhancement types and surface characteristics between IT and DT gastric tumor. CT has high coincidence rate with lymph node staging in gastric cancer.
2017 Vol. 28 (9): 633-636 [Abstract] ( 759 ) HTML (1 KB)  PDF  (0 KB)  ( 123 )
637 Preliminary study of shear wave elastography in the application in diagnosis and grading of nonalcoholic fatty liver disease
HE Peng, REN Bo, LI Ling, TANG Ying, ZHENG Xiao-yan, GU Peng
Objective: To explore the application value of shear wave elastography(SWE) in diagnosis of nonalcoholic fatty liver disease(NAFLD), by detection and analysis the liver stiffness measurement(LSM) of rabbits with NAFLD by SWE, in order to provide a practical and noninvasive clinical diagnosis technology of NAFLD. Methods: The 45 New Zealand white rabbits were divided randomly into the experimental group(n=35, with high fat diet) and the control group(n=10, with normal diet). The total test time was 24 weeks. We tested the LSM of all the rabbits in time of 16th and 24th week then killed all the rabbits and observed the liver histopathology after the ultrasonic test at the time of 24th weekend. Independent samples T-test of the various indexs of the rabbits in the two groups was performed using SPSS statistical software, version 22(SPSS Inc., Chicago, IL, USA) with all the data displayed as means±standard deviation. Pearson’s correlation coefficient was used for analysis the LSM with the liver fibrosis(LF), and the receiver operating characteristic curve(ROC) was constructed to analyze the detection efficiency of LSM in the diagnosis of LF. Results: All the 28 high fat diet rabbits survived were involved in the experiment group, and the 10 rabbits in normal control group were all survived. LSM in experimental group were higher than the control group in time of 16th and 24th week respectively(P all<0.05). And the LSM in the experimental group in time of 24th week was higher than the LSM in time of 16th week(t=10.857, P<0.05). The pathological in the experiment group results show that there were 5 rabbits at stage S0, 7 rabbits at stage S1, 11 rabbits at stage S2, 3 rabbits at stage S3, 2 rabbits at stage S4. The difference of LSM between different level of LF had statistical significance(F=390.381, P<0.001), the degree of LF and LSM showed a linear correlation(r=0.940, P=0.000). The areas under the ROC curve(AUC) was 0.918 when LSM diagnosis LF>S0, AUC was 0.933 when LF>S1, AUC was 0.966 when LF>S2, AUC was 0.974 when LF>S3 (early cirrhosis). Conclusion: SWE has high accuracy in the diagnosis and grading of NAFLD in rabbits, and may have a good application value in the evaluation of patients with NAFLD.
2017 Vol. 28 (9): 637-641 [Abstract] ( 807 ) HTML (1 KB)  PDF  (0 KB)  ( 257 )
642 Comparative study between Gd-EOB-DTPA enhanced MRI and triple phase multidetector CT in#br# diagnosis of focal liver lesions
TONG Jing, BEI Gui-guang, LI Yu-ze, XU Ran, LIU Ning, CHENG Zhi-liang
Objective: To compare the value of Gd-EOB-DTPA enhanced MRI with hepatospecific phase with that of Gd-EOB-DTPA enhanced MRI without hepatospecific phase and contrast-enhanced MDCT in diagnosis of focal liver lesions(FLL). Methods: Thirty-eight patients with 55 FLLs underwent MDCT and Gd-EOB-DTPA enhanced MRI. FLLs were verified based on pathological or follow-up results. CT and MR images were independently analyzed by four radiologists on an ordinal 6-point-scale. Results: Compared to MDCT and MRI without hepatospecific phase, more FLLs were correctly classified into benign and malignant entities by each of the four radiologists on MRI with hepatospecific phase. MDCT achieved sensitivity of 51.6%, specificity of 56.5%, and diagnostic accuracy of 53.6%; MRI without hepatospecific phase achieved sensitivity of 68.8%, specificity of 59.8%, and diagnostic accuracy of 65.0%; MRI with hepatospecific pahse achieved higher sensitivity (89.1%), specificity(78.3%) and accuracy(84.5%) compared to MDCT and MRI without hepatospecific phase(P<0.05). Conclusion: Gd-EOB-DTPA enhanced MRI with hepatospecific phase provides significantly higher diagnostic efficacy compared to MDCT and Gd-EOB-DTPA enhanced MRI without hepatospecific phase in diagnosis of FLLs.
2017 Vol. 28 (9): 642-646 [Abstract] ( 814 ) HTML (1 KB)  PDF  (0 KB)  ( 141 )
647 Application value of CT virtual colonoscopy and CTA imaging of mesenteric vessels in#br# the diagnosis of sigmoid volvulus
OU Hong-ru1, JIA Hong-ming1, JIAN Jian-cheng1, CHENG Hai-xiong2, YANG Shao-min2, CHENG Xin3
Objective: To analyze diagnostic values of CT virtual colonoscopy and computed tomography angiography imaging of mesenteric vessels for volvulus of sigmoid. Methods: Imaging data of 12 patients were analyzed retrospectively, who were confirmed as volvulus of sigmoid by multislice computed tomography(MSCT) examinations and surgeries. Intestinal canals and mesenteric vessels were shown with CT virtual endoscopy(CTVE), volume rendering(VR), maximum intensity projection(MIP), multi-planar reformation(MPR) and other post-processing reconstruction techniques. Results: CTVE indicated that there were various degrees of pneumatosis and expansion of sigmoid colon in 12 patients, including 11 patients with the shape of "U" and 1 patient with the shape of "C". The horseshoe-shape convolutions sensitivity of closed loop volvulus was 91.7%(11/12) in CTVE, which was higher compared with that in the plain abdominal radiograph(41.6%, 5/12); and there were statistical differences(P<0.05). CTA displayed that there were abnormal courses of sigmoid arteries in 8 patients, proximal segment of volvulus in 6 patients, and disordered structure in 2 patients. MIP showed 2 patients with the development of arterial arch of colon being sparse and pale, which was confirmed as ischemia of the intestinal wall by surgeries. Conclusions: As displayed a certain diagnostic value to judge whether patients combine with intestinal ischemic necrosis or not, MSCT combined with CT virtual colonoscopy and CTA imaging mesenteric vessels can visually show volvulus of sigmoid in closed loop convolutions shape.
2017 Vol. 28 (9): 647-650 [Abstract] ( 752 ) HTML (1 KB)  PDF  (0 KB)  ( 312 )
651 A quantitative study of annular plane systolic excursion difference in cases of heart function of#br# normal fetuses in second- and third-trimester
LI Ting, GAO Lin, YAO Lin, WANG Shan-shan
Objective: To analyze the value of mitral and tricuspid annular plane systolic excursion difference(APSED) of normal fetuses in the second- and third-trimester in case of the study of fetal heart function. Methods: APSED with the peak velocity of early diastole phase(E, E’) and late diastole phase(A, A’) at mitral and tricuspid valve, the stroke volume(SV) and ejection fraction(EF) of both left and right ventricular were quantitatively analyzed. Results: There was a significant difference between TAPSE and MAPSE in different gestational weeks(P<0.05). The APSED of normal fetuses was growing with the increase of gestational weeks, and showed significant positive correlations with gestational week. There was also a positive correlation between APSED and E, E’, A, A’, LSV, RSV, but there was no significant correlation between APSED and LVEF, RVEF. Conclusions: The use of APSED to evaluate fetal heart function has a good correlation with traditional evaluation parameters, and can reflect the difference of the longitudinal motion of fetal left and right ventricles quantitatively. It can be used as a new index to assess the fetal cardiac function.
2017 Vol. 28 (9): 651-656 [Abstract] ( 655 ) HTML (1 KB)  PDF  (0 KB)  ( 174 )
657 Endovascular repair of traumatic axillary artery injury
ZHANG Xi-quan, GE Shi-tang
Objective: To explore the feasibility and efficacy of endovascular repair for traumatic axillary artery injury.  Methods: The clinical data of 14 patients with traumatic axillary artery injury undergoing endovascular intervention from February 2008 to August 2016 were retrospectively analyzed, the angiography showed that contrast extravasation, pseudoaneurysms, vascular stenosis or occlusion. Contrast extravasation and pseudoaneurysms were treated with stent grafts, vascular stenosis or occlusion were treated with bare stents or angioplasty. Results: Operation was performed successfully in all 14 patients, The mean operation time was 45 minutes(30～80 minutes). The interventions included balloon angioplasty(n=2), covered stent implantation(n=6) and bare stent implantation(n=6). After endoluminal treatment, axillary artery blood flow recovered, no contrast extravasation or severe complications occurred. Fourteen patients were followed up for 2~36 months(mean of 19.5 months), one stent-graft occlusion occurred, which was treated with intraarterial pharmacologic thrombolysis, blood flow patency was kept in the rest of the upper limb artery. Conclusion: For traumatic axillary artery injury, percutaneous interventional treatment can rapidly repair vascular injury and restore the blood flow, the clinical effect is significant, with less invasive performance and easy to operate, and it is a safe and effective method.
2017 Vol. 28 (9): 657-659 [Abstract] ( 631 ) HTML (1 KB)  PDF  (0 KB)  ( 279 )
660 Application study of CARE Dose 4D technology and SAFIRE in tuberculosis by low dose CT examination
LIU Jun-zhong1, GENG Hai2
Objective: By studying the CARE Dose 4D technology combined use of SAFIRE technology in tuberculosis with low dose CT scan, to evaluate the value and significance of these two kinds of new technologies. Methods: All of 300 patients with secondary pulmonary tuberculosis were distributed into three groups, each group of tube voltage was 120 kV. All groups underwent SOMATOM Definition Flash CT scanning with the same series thorax routine(adult). Group A was enabled CARE Dose 4D mode with the reference tube current of 150 mAs, by using SAFIRE grade 3 for image reconstruction. Group B and group C were not enabled CARE dosed 4D mode, fixed mAs instead, respectively 150 mAs and 80 mAs. SAFIRE is not used but the FBP in image reconstruction. The qualities of the images were evaluated by two imaging physicians with double blind method. Record relevant parameters and dose indexes. All data were recorded and analyzed by using Statistics SPSS 19 statistical software. Results: In the subjective evaluation of image, consistency of the image quality evaluation of two physicians was very good(Kappa=0.819). In radiation dose contrast, compared with group B, The CTDIvol, DLP and ED of group A were low about 58.81%(t=20.383, P<0.05), 61.64%(t=7.894, P<0.05), 59.20(t=15.673, P<0.05). Compared with group C, The CTDIvol, DLP and ED of group A were low about 28.76%(t=12.981, P<0.05), 42.65%(t=4.762, P<0.05), 45.15%(t=11.764, P<0.05). The CTDIvol, DLP and ED values in group A were lower than group B and C, and the difference was significant statistically, The image quality of group C was obviously different from group A and group B. Compared the CT image noise level of group A and group B, there was no significant statistical difference(t=1.207, P>1.207). group A and group C(t=3.349, P<3.349), group B and group C(t=2.213, P<2.213) were statistically significant either. The signal to noise ratio of group A was substantially higher than that of group B and group C, and the contrast noise ratio was remarkably higher than the other two groups, higher than group B and group C were about 18.4% and 30.88%. The three groups were statistically significant. Conclusion: Combined use of CARE Dose 4D technology and Sinogram Affirmed iterative reconstruction technology, it can not only reduce the dose of CT radiation, but also ensure and improve the quality of imaging.
2017 Vol. 28 (9): 660-664 [Abstract] ( 615 ) HTML (1 KB)  PDF  (0 KB)  ( 125 )
665 Occupational dose in interventional radiology procedures
MA Heng-fei1, LI Ling-jun1, CHEN Chuang-ju1, WANG Li-zhou2, ZHOU Shi2
Objective: Interventional radiology tends to involve long procedures(i.e., long fluoroscopic times). Therefore, radiation protection for interventional radiology staff is an important issue. This study describes the occupational radiation dose for interventional radiology staff, especially nurses, to clarify the present annual dose level for interventional radiology staff. Methods: We compared the annual occupational dose(effective dose and dose equivalent) among interventional radiology staff in a hospital where 2 202 catheterization procedures were performed annually. The annual occupational doses of 6 physicians, 3 nurses, and 3 radiologic technologists were recorded using two monitoring badges, one worn over and one under their lead aprons. Results: The annual mean±SD of effective dose(range) to the physicians, nurses, and radiologic technologists using two badges was 3.00±1.50(0.84~6.17), 1.34±0.55(0.70~2.20), and 0.60±0.48(0.02~1.43)mSv/y, respectively. Similarly, the annual mean±SD of dose equivalent range was 19.84±12.45(7.0~48.5), 4.73±0.72(3.9~6.2), and 1.30±1.00(0.2~2.7)mSv/y, respectively. The mean±SD of effective dose for the physicians was 1.02±0.74 and 3.00±1.50mSv/y for the one- and two-badge methods, respectively(P<0.001). Similarly, the mean±SD of effective dose for the nurses(P=0.186) and radiologic technologists(P=0.726) tended to be lower using the one-badge method. Conclusion: The annual occupational dose for interventional radiology staff was in the order physicians>nurses>radiologic technologists. The occupational dose determined using one badge under the apron was far lower than the dose obtained with two badges in both physicians and nonphysicians. To evaluate the occupational dose correctly, we recommend use of two monitoring badges to evaluate interventional radiology nurses as well as physicians.
2017 Vol. 28 (9): 665-668 [Abstract] ( 484 ) HTML (1 KB)  PDF  (0 KB)  ( 183 )
669 Progress of diffusion weighted imaging in pancreatic lesions
LIU Ze-qun, LIU Ai-lian
In recent years, diffusion-weighted imaging and its derivative sequences including intravoxel incoherent motion, reduced field-of-view diffusion weighted imaging, anddiffusion tensor imaging have been widely applied to the diagnosis and differential diagnosis of pancreatic lesions, which has important clinical value. The diffuse kurtosis imaging and stretched exponential model also have certain application value. In this paper, the application of MR diffusion weighted imaging(DWI) and its derived sequences in pancreatic lesions is summarized.
2017 Vol. 28 (9): 669-672 [Abstract] ( 807 ) HTML (1 KB)  PDF  (0 KB)  ( 287 )
672 Application progress of radiomics in digestive system diseases
LI Hua-xiu, LI Zhen-hui, WANG Guan-shun
adiomics is an important part of precision medicine, which is also an inevitable trend of the development of medical imaging. In recent years, the application of radiomics in the diagnosis and treatment of disease has been paid more and more attention by scholars and clinical workers. However, the radiomics study methods, scanning parameters and analysis methods have not been standardized and the repeatability of research results needs to be validated. In addition, there is a big difference between the research progress of the disease. This article is to review the research and application of imaging in the diagnosis, treatment, curative effect and prognosis of digestive system neoplasms(esophageal cancer, liver cancer, colorectal cancer).
2017 Vol. 28 (9): 672-674 [Abstract] ( 782 ) HTML (1 KB)  PDF  (0 KB)  ( 317 )
675 Application of multi-slice spiral CT perfusion imaging in cerebral hemodynamics of scalp flap in normal adults
ZHU Jian-ping, ZHANG Jin-peng, LIU Yao, ZHAO Ning-hui
2017 Vol. 28 (9): 675-676 [Abstract] ( 676 ) HTML (1 KB)  PDF  (0 KB)  ( 129 )
677 Analysis of onset time of sciatic nerve block by ultrasound guidance
LIN You-guo1, RUAN Qin-yun2
2017 Vol. 28 (9): 677-679 [Abstract] ( 721 ) HTML (1 KB)  PDF  (0 KB)  ( 295 )
680 Multiple mucinous adenocarcinoma in situ of lung on 18F-FDG PET/CT: report of one case
TIAN Jin-ling, DAI Wen-li, CUI Bang-ping, WANG Peng, HU Wei
2017 Vol. 28 (9): 680-681 [Abstract] ( 881 ) HTML (1 KB)  PDF  (0 KB)  ( 284 )
682 Endobronchial metastasis from renal clear cell carcinoma: report of one case
LIU Xiao-ying, ZHAO Ya-dong
2017 Vol. 28 (9): 682-683 [Abstract] ( 769 ) HTML (1 KB)  PDF  (0 KB)  ( 199 )
683 Imaging findings of neonatal adrenal neuroblastoma with diffuse liver metastases: report of one case
LAI Wei1, LIU Jian-xin1, JIANG Shuang-lan1, XIAN Yun-kai1, FAN Miao2
2017 Vol. 28 (9): 683-684 [Abstract] ( 888 ) HTML (1 KB)  PDF  (0 KB)  ( 311 )
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