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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
2007 Vol. 18, No. 2
Published: 2007-02-20
 
       论著
77 MRI dynamic changes in the ipsilateral substantia nigra following MCAO cerebral ischemia
YANG Yan-mei;FENG Xiao-yuan;YAO Zhen-wei;JIANG Sheng-hong;LIU Han-qiu;ZHANG Fang;TONG Tong;WANG Fei
DOI:
Objective: To analyze the MRI features of the substantia nigra(SN) following single side middle cerebral artery(MCA) occlusion by intraluminal thread in rats． Materials and Methods: Healthy adult male Sprague-Dawley rats(n=16) weighting 270 to 320g were divided into two groups randomly: permanent MCA occlusion(MCAO) group included 12 rats, and 4 rats in control group was sham-operated. The T2WI and absolute T2 values of the SN, cortex and striatum on MRI were assessed on 1h, 3h, 6h, 9h, 12h, 1d, 3d and 7d after MCAO using a 3.0T MR scanner. Results: The brains of the animals in the control group showed no noteworthy abnormality on MRI. All the rats in MCAO group showed cerebral infarction involving the ipsilateral cortex and striatum. The T2WI signal intensity of the mentioned lesions in MCAO group showed a dynamic changes according to time. No changes of bilateral SN can be seen on 1h, 3h, 6h, 9h, 12h and 1d after MCAO. On the 3rd day, the SN of the ipsilateral side to the occluded MCA showed obviously higher signal intensity on T2WI than that of the contralateral side with a clear demarcation. No changes of the signal on the contralateral side could be observed. The difference of the T2 value between the bilateral SN was significant. These changes in the ipsilateral SN were not displayed on the 7th day. The trend of the T2 value change of ipsilateral SN was not in-phase with that of cortex and striatum. Conclusions: MR signal changes can be seen in the ipsilateral SN on the 3rd day after MCAO.
2007 Vol. 18 (2): 77-80 [Abstract] ( 1733 ) HTML (0 KB)  PDF  (0 KB)  ( 205 )
81 Correlation study of T2 signal values of deep brain gray nucleus and estimated iron content at 3.0 Tesla MR
XU Hua-zhi;SUN Bo;LI Jian-ce
DOI:
Objective: To study the correlation of T2 signal values of deep brain gray nucleus and estimated iron content at 3.0 Tesla magnetic resonance machine. Materials and Methods: 1192 cases of T2WI of normal brain examined at 3.0T Siemens Trio machine in Beijing Tiantan Hospital from Dec. 2004 to May 2005 were collected(including male 689, female 503, age ranged from 1 to 87 years). All cases were divided into 17 groups by five years. The signal values of red nucleus, substantia nigra, globus pallidus, putamen, caudate nucleus and the frontal cortex on T2WI were measured with Efilm workstation 2.0 measuring tools, the measurements were conducted three times. The ratios of T2 signal values of deep gray nucleus compared to the frontal cortex were calculated. Results: The ratios of red nucleus, substantia nigra, globus pallidus, putamen showed a strong linear correlation with estimated iron content(red nucleus P=0.001, r=-0.748, substantia nigra P<0.001, r= -0.863, globus pallidus P<0.001, r=-0.965, putamen P<0.001, r=-0.816). But there was no linear correlation between the ratio of caudate nucleus and the estimated iron content of that(P=0.336>0.05). Conclusion: The ratios of red nucleus, substantia nigra, globus pallidus, putamen can reflect local nonheme iron content semi-quantitatively.
2007 Vol. 18 (2): 81-84 [Abstract] ( 1218 ) HTML (0 KB)  PDF  (0 KB)  ( 323 )
85 Evaluation and clinical application of 3D-CTA imaging techniques in the diagnosis of intracranial aneurysm
LIU Zhan-chuan;HAN Jin-shan
DOI:
Objective: To investigate the value of clinical application and diagnostic accuracy of 3D-CTA imaging techniques in the diagnosis and treatment of intracranial aneurysm. Methods: Final diagnosis were made in 42 cases of intracranial aneurysm through 3D-CTA, comparative study of 3D-CTA images and operation results were performed. Results: The procedure of exposure aneurysm was identical with the 3D-CTA image. In 40 cases, the operation results were identical to the result of 3D-CTA. Misdiagnosis were found in two cases. Conclusion: 3D-CTA should be used as the first choice for clinical diagnosis of intracranial aneurysm, and is an important reference for the surgical planning before operation. For the anterior communicating artery aneurysm or post communicating artery aneurysm, MIP and SSD techniques should be used for further diagnosis.
2007 Vol. 18 (2): 85-87 [Abstract] ( 1127 ) HTML (0 KB)  PDF  (0 KB)  ( 210 )
88 Imaging diagnosis of intracranial malignant fibrous histiocytoma(report of 10 cases)
WU Yue;ZHANG Xue-lin;GUAN Chang-qun;YANG Ben-qiang
DOI:
Objective: To improve the level of imaging diagnosis of intracranial malignant fibrous histiocytoma. Methods: Ten cases of malignant fibrous histiocytoma proved by pathology underwent CT examination before operation. Cerebral angiography and MRI were also performed in 3 and 2 cases respectively. Results: The tumor located in the frontoparietotemporal part in 2 cases, in the frontal part in 2 cases, in the middle cranial fossa in 2 cases, in the parietal part of the brain in 2 cases, in the frontoparietal part in 1 case, and in the frontotemporal part in 1 case. Inhomogeneous density and inhomogeneous enhancement were seen on CT with skull bone invasion in 2 cases. On MR, one tumor showed isointense on T1WI and mixed density on T2WI, while the other showed low density on T1WI and high on T2WI. All the tumors were lobulated. Tumor vessels and compression of the anterior and midddle cerebral arteries were seen in cerebral angiography of the 3 cases. Conclusion: The diagnosis of malignant fibrous histocytoma should be considered when its imaging features are similar with those of malignant meningioma, glioma or metastatic encephaloma with a short history and rapid deteriorated course in the middle aged and the old patients.
2007 Vol. 18 (2): 88-90 [Abstract] ( 1244 ) HTML (0 KB)  PDF  (0 KB)  ( 197 )
       病例报告
90 Early gastric cancer first diagnosed by ultrasonography: one case
DU Juan;LIU Li
DOI:
2007 Vol. 18 (2): 90-90 [Abstract] ( 1112 ) HTML (0 KB)  PDF  (0 KB)  ( 259 )
       论著
91 Analysis of MR manifestation and differential diagnosis in chordoma of the skull base
YANG Hai-tao;WANG Ren-fa;GAO Xiao-ling;CHENG Juan-juan;XIA Li-ming;WANG Cheng-yuan
DOI:
Objective: To analyse the MR manifestations in chordoma of the skull base, evaluate the value of diagnosis and differential diagnosis with MRI in basicranial chordoma. Methods: MRI findings in 16 patients with pathologically-proved basicranial chordoma were analyzed retrospectively. Results: In 16 cases of chordomas, 9 tumors located in clivus, 7 tumors involved intrasellar, parasellar, sphenoidal sinus, and nasopharynx, 1 involved posterior cranial fossa simultaneously. Tumors displayed inhomogenous hypo/isointense T1 signal soft tissue tumors, in T2WI 9 showed isointense or slightly long T2 signal, 7 showed extremely long T2 signal. Contrast enhancement displayed 10 cases had inhomogenous enhancement and 5 cases had markedly enhancement. Conclusion: MRI can well display the location, shape, infiltrating scope of the basicranial chordoma and anatomic relationship with adjacent tissue, basicranial chordomas have certain specific MR features, MRI has higher value in diagnosis and differential diagnosis of basicranial chordoma.
2007 Vol. 18 (2): 91-93 [Abstract] ( 1316 ) HTML (0 KB)  PDF  (0 KB)  ( 205 )
94 MR diagnosis of tumor originating in the infratemporal fossa
TAO Ran;CUI Jin-guo;SUN Xing-wang;ZHU Yu-fen;DU Yu-ping
DOI:
Objective: To evaluate MR imaging findings of tumor originating in the infratemporal fossa so as to promote the diagnostic accuracy. Methods: All tumors arising from infratemporal fossa were confirmed by pathology and surgery. MR appearance were analyzed retrospectively. Results: The tumors included 5 neurilemmomas, 3 neurofibromas, 1 angiofibroma, 2 chondrosarcomas, 1 synovial sarcoma. Neurogenic tumors had well-defined border and regular shape with isointense signal on T1WI and hyperintense signal on T2WI. Neurofibromas showed homogeneous enhancement after administration of contrast medium while neurilemmomas showed heterogeneous enhancement. On MR imaging angiofibromas were isointense compared to muscle on T1WI, hyperintense on T2WI with obvious enhancement after administration of contrast medium. The synovial sarcomas were homogeneously isointense on T1-weighted studies and were hypointense relative to muscle on T2-weighted studies. After administration of contrast material, the mass enhanced slightly more than the surrounding muscles. Chondrosarcoma’s border was ill-defined, showing heterogeneous hypointense signal on T1WI, inhomogenous hyperintense signal on T2WI and heterogeneous enhancement after administration of contrast medium. Conclusion: MRI can demonstrate optimally the border and the extent of the tumors in infratemporal fossa. MR imaging can contribute to diagnosis of neurogenic tumor and angiofibroma.
2007 Vol. 18 (2): 94-96 [Abstract] ( 1223 ) HTML (0 KB)  PDF  (0 KB)  ( 195 )
97 Value of multi-direction multiplanar reconstruction with multislice CT for guiding biopsy of focal pulmonary lesions
QUAN Guan-min;YUAN Tao
DOI:
Objective: To study the value of multi-direction multiplanar reconstruction(MPR) using multislice CT for guiding biopsy of focal pulmonary lesions. Methods: Thirty-three cases and 31 cases with focal lung diseases were biopsied guided by axial CT imaging(non-MPR) and multi-direction MPR imaging successfully. The difficulty of biopsy, total time of manipulation, the times of puncture, the incidence of complications, average dose-length product(DLP) and the rate of definitive diagnosis were compared between the two groups. Results: There was no difference of biopsy diffculty and the rate of definitive diagnosis between non-MPR and MPR groups. The time consumption for MPR group was 33 minutes, and 44 minutes for non-MPR group(P<0.001). For successful biopsy, 1.16 times of puncture were made for MPR group, whereas 1.61 times for non-MPR group(P=0.001). Only 6 patients(19.35%) of MPR group had a little pneumothorax or hemoptysis, but the complication incidence of non-MPR group was 45.45%(15/33)(P<0.05). The average DLP was 81.84mGy·cm for MPR group and 91.18mGy·cm for the non-MPR group(P<0.001). Conclusion: With guidance of multi-direction MPR of multislice CT scan, the puncture path and the relationship between lesions and surrounding structures were manifested visually. Hence the manipulation time, the times for puncture and intraoperative scan, incidence of complications and exposure dose were reduced markedly. So multi-direction MPR is a valuable method for needle biopsy of focal pulmonary diseases, especially for deep lesions.
2007 Vol. 18 (2): 97-100 [Abstract] ( 1239 ) HTML (0 KB)  PDF  (0 KB)  ( 267 )
101 Arc of Riolan on CT angiography
WANG Xin-jiang;CAI Zu-long;ZHAO Shao-hong;ZHAO Xi-hai;HUANG Hui;ZHAO Lin－fen;YANG Li
DOI:
Objective: To evaluate the CT angiography(CTA) in demonstrating the arc of Riolan. Materials and Methods: Fourteen cases with the arc of Riolan were analyzed retrospectively. Among them, there were 9 male and 5 female patients, aged from 19 to 80 years(averaged 52.1 years). Five females suffered from Takayasu’s arteritis, while eight males had atherosclerosis and/or hypertension, one young male suffered from abdominal aortic coarctation. Results: Abdominal aorta occlusions were demonstrated in seven cases. SMA occlusions were found in two, seven cases showed stenosis, and five cases were normal. IMA occluded in six patients, stenosed in three cases, normal in five cases. The calibers of Riolan’s arc were 4 to 10mm, with an average of 6.9mm. Conclusion: The arc of Riolan can be demonstrated by CTA among those suffered from multiple abnormalities in abdominal vessels, and represents a significant stenosis or occlusion somewhere in mesenteric circulation. It is valuable for treatment procedures.
2007 Vol. 18 (2): 101-103 [Abstract] ( 1557 ) HTML (0 KB)  PDF  (0 KB)  ( 297 )
       病例报告
103 Transitional cell carcinoma combined with benign mesenchymoma of bladder: one case
AN Rui-fu;ZHANG Wei
DOI:
2007 Vol. 18 (2): 103-103 [Abstract] ( 1069 ) HTML (0 KB)  PDF  (0 KB)  ( 412 )
       论著
104 Color Doppler ultrasound in the study of hemodynamics of descending aorta
YE Yi;ZHAO Bao-zhen;TANG Jing-dong
DOI:
Objective: To evaluate color Doppler ultrasound in the study of hemodynamics of descending aorta of normal subjects and patients with hypertension to find the role of hemodynamics of descending thoracic aorta in the pathologic mechanism of Stanford B dissecting aneurysm. Methods: The hemodynamic parameters of the descending aorta were measured by the color Doppler ultrasound in 87 normal subjects and 20 hypertensive patients to test Doppler blood stream spectrum of aortic arch at some sites. Results: High blood speed region were found at the descending aorta in both teams. There was significant difference in the peak distance between the two teams, and so it was with blood flow speed of infra-team and intra-team in different sites. And the velocity from inner-wall to outer-wall was descending. Conclusion: The high speed region in descending thoracic aorta may be associated with the pathologic mechanism of dissecting aneurysm.
2007 Vol. 18 (2): 104-105 [Abstract] ( 1239 ) HTML (0 KB)  PDF  (0 KB)  ( 226 )
106 Ultrasound evaluation of interlobular vessels in the diagnosis of chronic kidney disease
XIANG Fei-xiang;XIE Ming-xing;WU Xian;XIONG Run-qing;FU Ling;WU Liang;WANG Xin-fang
DOI:
Objective: To evaluate interlobular vessels with ultrasound in the diagnosis of chronic kidney diseases(CKD). Methods: A total of 57 CKD patients at different stages and 43 healthy adults served as control were enrolled in the study. Several dimensions of kidneys and resistance index(RI) of arteries were measured. Interlobular arteries were studied with eflow, and all the kidneys were classified into five types according to the ratio of interlobular artery to cortex. Results: When arcuate and interlobular arteries were detected, RI of CKD patients in each stage increased significantly compared with the control group, and RI of interlobular arteries of mild renal dysfunction patients were different from those of moderate and severe renal dysfunction patients significantly. The eflow types of CKD patients in each stage were different with the control group significantly, and the eflow of mild renal dysfunction was different from those of moderate and severe renal dysfunction significantly. Conclusions: Eflow, a new method of blood flow, can assess renal function and differentiate mild renal dysfunction from moderate and severe renal dysfunction.
2007 Vol. 18 (2): 106-109 [Abstract] ( 2482 ) HTML (0 KB)  PDF  (0 KB)  ( 227 )
110 Experimental study on dynamic contrast-enhanced MRI in evaluating femoral perfusion
CHENG Shao-rong;WANG Ren-fa;GAO Xiao-ling;YANG Hai-tao;FENG Ding-yi;XIA Li-ming;WANG Cheng-yuan
DOI:
Objective: To evaluate the value of dynamic contrast-enhanced MRI(DCE-MRI) with hemorrheology in the detection of femoral perfusion in the early stage of steroid-induced avascular necrosis of femoral head(AvNFH) model. Methods: Twenty-five rabbits were examined by non-enhanced, DCE-MRI with the same method before treatment and in the second week, fourth week, sixth week and eighth week after steroid treatment. Venous blood was obtained for hemorrheology in the fourth week, eighth week. After rabbits were killed, paraffin section and HE stained specimen of all the femoral heads were made for pathological investigation. Results: ①The steepest slope(SS) of time-signal intensity curve gradually declined with time in the early stage and intensity of perfusion decreased gradually(P<0.01). Correspondingly, the number of empty lacuna increased gradually(P<0.01). ②Compared with normal group, the indexes of experimental group including whole blood(high and low slice) viscosity, viscosity of plasma and packed cell volume elevated, but only the increase of whole blood(low slice) viscosity, packed cell volume were significant(P<0.05). ③The parameter SS of DCE-MRI correlated negatively with whole blood(low slice)(r=-0.65, P<0.05). Conclusion: DCE-MRI can evaluate the state of blood perfusion of femoral head and is valuable for early diagnosis.
2007 Vol. 18 (2): 110-114 [Abstract] ( 1293 ) HTML (0 KB)  PDF  (0 KB)  ( 187 )
       病例报告
114 Ultrasound feature of Castleman’s disease: one case
HUANG Qian;TAO Ning;DING Shu-yu
DOI:
2007 Vol. 18 (2): 114-114 [Abstract] ( 1008 ) HTML (0 KB)  PDF  (0 KB)  ( 228 )
       论著
115 Radiochemical synthesis of [18F]-FB-HYNIC-Octreotideaccording to chemoselective strategy with two steps methodology
XIN Jun;GUO Qi-yong;ZHAO Zhou-she
DOI:
Radiochemical synthesis of [18F]-FB-HYNIC-Octreotide according to chemoselective strategy with GE TRACERlab FXn used two steps methodology; study some factor which impact radiochemical synthesis productivity. This is simple, easy and stable for operator and meet the clinical application satisfactorily.
2007 Vol. 18 (2): 115-117 [Abstract] ( 1255 ) HTML (0 KB)  PDF  (0 KB)  ( 233 )
118 Application of the binary Logistic regression model to analyze the results of benign and malignant superficial lymph nodes diagnosed by ultrasonography
HAN Zhi-yu;LI Xin;SHAO Qiu-jie
DOI:
Objective: To apply the binary Logistic regression model to analyze the ultrasonogrphic differential diagnosis of benign and malignant superficial lymph nodes. Methods: The ultrasonography of superficial lymph nodes of 171 patients proved by pathology and follow-up were analyzed, and we selected the indexes of differential diagnosis through the model of binary Logistic regression analysis to see if these were statistical significance. Results: All indexes of ultrasonography were analyzed by the multivariable binary Logistic regression model through the forward stepwise. Some of those indexes were selected out and induced in the equation, which included: having the normal lymph hilum or not, the recode by the ratio of longitudinal over short diameter, having the area of acoustic transmission or not, the signal of the blood flow rich or scarce, the signal types of the blood flow, and the covariates of age and sex． Moreover, all those indexes were included of the indexes which had significant statistical differences using χ2 test. Meanwhile, the results shown that the malignant probability of a lymph node would change with altering of the signal types of blood flow. Conclusion: The multivariate analysis model of binary Logistic regression can describe and analyze the process of differential diagnosis of malignant and benign lymph nodes by ultrasonography, and can select out the valuable indexes of differential diagnosis.
2007 Vol. 18 (2): 118-120 [Abstract] ( 2196 ) HTML (0 KB)  PDF  (0 KB)  ( 283 )
121 Clinical value of VCT coronary artery imaging in the diagnosis of myocardial bridges
YU Shu-jing
DOI:
Objective: To study the clinical value of VCT coronary artery imaging in the diagnosis of myocardial bridges. Methods: A total of 121 cases with clinical appearance of coronary disease underwent the examination of VCT, the appearance of myocardial bridges diagnosed by VCT in 33 cases were analysed retrospectively. Results: Fifty-nine myocardial bridges were found in 33 patients, the rate was 27%. The location in left anterior descending artery was 40%, diagonal artery 27%, left obtuse marginal branch 22.3%, left circumflex artery 6.7%, right coronary artery 5%. Length of myocardial bridges was 5～49mm, average (22±11)mm, depth was 1.2～5mm, average (2.3±1.0)mm. The appearance of myocardial bridge in CT angiography was slightly flat, but the lumen was smooth, with no stenosis and plaque. Conclusion: VCT is the first choice in the diagnosis of myocardial bridge, but can not evaluate the blood flow. There is no relationship between myocardial bridge and arteriosclerosis. When the patient with myocardial bridge has the symptom of typical angina and the ECG change occurring, the examination of coronary artery angiography should be accepted.
2007 Vol. 18 (2): 121-122 [Abstract] ( 1165 ) HTML (0 KB)  PDF  (0 KB)  ( 215 )
123 Evaluation of CT in the diagnosis of xanthogranulomatous cholecystitis
SHEN Xun-ze;WU Jin-xiu;ZHOU He-shan;ZHANG Guang-qiang;YANG Bin
DOI:
Objective: To access the value of CT in the diagnosis of xanthogranulomatous cholecystitis(XGC) and its differentiation from thick-wall gallbladder carcinoma. Methods: The maximum thickness of the cystic wall was measured in 13 cases of XGC and 19 cases of thick-wall gallbladder carcinoma. The following CT features were analyzed and recorded:①intramural hypoattenuated nodules or bands of the gallbladder; ②mucosal line; ③appearances of the cystic inner wall; ④infiltration of the liver; ⑤dilation of intrahepatic bile duct; ⑥retroperitoneal lymphadenopathy. Results: The mean thickness of the cystic wall for XGC was (24.7±16.0)mm and (18.3±8.6)mm for gallbladder carcinoma. Intramural hypoattenuated nodules were seen in 10 patients with XGC and 6 with gallbladder carcinoma. Mucosal line was observed in 8 patients with XGC and 6 with gallbladder carcinoma. Inner wall of the gallbladder was even in 8 patients with XGC and 8 with gallbladder carcinoma. Hepatic involvement was seen in 5 patients with XGC and 7 with gallbladder carcinoma. Expansion of intrahepatic bile ducts existed in 1 patient with XGC but in 12 with gallbladder carcinoma. Retroperitoneal lymphadenopathy was observed in 4 patients with gallbladder carcinoma but none with XGC. Conclusion: Intramural hypoattenuated nodules or bands in thickened cystic wall without dilation of intrahepatic bile duct is the most valuable CT features for diagnosis of XGC and its’ differentiation from gallbladder carcinoma.
2007 Vol. 18 (2): 123-125 [Abstract] ( 1454 ) HTML (0 KB)  PDF  (0 KB)  ( 288 )
126 Experimental study of simulated polyps in pig colon: detection with 16-MDCT virtual endoscopy
MA Wei;ZHAO Gui-xin;WANG Xiao;FENG Yan-li;LIN Jun-hui;ZHU Hai-bo
DOI:
Objective: To access the ability and the optimal gas pressure of 16-MDCT virtual endoscopy in detection of simulated polyps with different sizes in pig colon. Methods: Twenty-four pieces of 40cm-long colon were divided into 3 groups randomly with the gas pressure of 37.5, 52.5 and 67.5mmHg. Each piece of colon had 5 simulated polyps with the size 1～2mm, 3～4mm, 5～6mm, 7～8mm and 9～10mm. All the pieces of colon underwent CT scanning with the angle of 0°, 45° and 90° to the gantry. Results: There was no significant difference for MDCT in detection of the polyps under different pressures and with different angles. Their sensitivities were all 100% except for the 1～2mm polyps detected under 37.5mmHg with the sensitivity of 75%. The depths of the colonic haustra were different under the above pressures, but there was no difference between 52.5mmHg and 67.5mmHg. Conclusion: The sensitivity of 16-MDCT virtual endoscopy in detection of polyps with the size ranged from 1 to 10mm is high. The optimal gas pressure is 52.5mmHg and it should be kept until the scanning is finished.
2007 Vol. 18 (2): 126-129 [Abstract] ( 2212 ) HTML (0 KB)  PDF  (0 KB)  ( 247 )
130 Velocity selection of dynamic defecography and its diagnostic value in constipation of functional outlet obstruction
LEI Zhi-dan;JIA Wu-lin;WEN Ze-jun;LI Jian-min;REN Jin-xiang
DOI:
Objective: To study the velocity selection of dynamic defecography in constipation of functional outlet obstruction, and evaluate its diagnostic value. Methods: The 217 patients with constipation of functional outlet obstruction underwent digital fluoroscopic imaging. The velocity selection of dynamic defecography were selected as 1 frame per second, 3 and 4 frames per second. The imaging materials including all kinds of velocity and morphologic change of three kinds diseases were analyzed by a blind study, and the data were processed by statistics. Results: Significant differences in constipation of functional outlet obstruction were observed between 1 frame per second and 3 or 4 frames per second. The dynamic defecography with 3 or 4 frames per second was superior to 1 frame per second. There were no differences between 3 frames per second and 4 frames per second. Conclusion: The dynamic defecography with 3 or 4 frames per second can both present three kinds of diseases. But thinking of the X-ray dose which patient accepted and the waste of X-ray unit, the dynamic defecography with 3 frames per second is a satisfactory method in diagnosing constipation of functional outlet obstruction.
2007 Vol. 18 (2): 130-132 [Abstract] ( 1728 ) HTML (0 KB)  PDF  (0 KB)  ( 248 )
133 Effect of HRCT in the diagnosis of sphenoid bone fracture
LI Shu-ling;WANG Zhen-chang;XIAN Jun-fang
DOI:
Objective: To explore the effect of HRCT in the diagnosis of sphenoid bone fracture in facial trauma. Methods: HRCT images of 346 facial trauma patients were analyzed retrospectively. Results: Eighty-six patients were found with sphenoid bone fracture. Among them, there were 81 cases(94%) with greater wing fracture, 66 cases(76.7%) with sphenoid bone body fracture, 49 cases(56.9%) with lesser wing fracture, 19 cases(22.1%) with sphenoid bone process fracture; 81 cases(94.1%) had multiple fractures and 79 cases(91.1%) associated with other facial bone fractures. Conclusion: The sphenoid bone fracture can be detected clearly by axial and coronal scan of HRCT. Most sphenoid bone fractures are multiple. Sphenoid bone fracture always suggests a complex trauma.
2007 Vol. 18 (2): 133-135 [Abstract] ( 1193 ) HTML (0 KB)  PDF  (0 KB)  ( 260 )
136 Dynamic Gd-enhanced MR imaging in super-early ischemia of growth cartilageand its characterization of blood perfusion
LI Xiao-ming;QI Jian-pin;WANG Ren-fa;XIA Li-ming;ZHENG Hong-wei;SHAO Jing-fan
DOI:
Objective: To evaluate the change of perfusion in super-early ischemia of growth cartilage of femoral head induced by hyperabduction and its characterization of blood perfusion. Materials and Methods: Thirty-two femoral heads of 16 two-week-old piglets were studied. At the beginning all piglets were placed with hips in neutral position and MR scans were performed. After MR exams, all piglets were placed with bilateral hips in consistent hyperabduction for 30 minutes and the same MR exams were repeated. After that, all piglets were allowed to ambulate. After 24 hours the same MRI was performed again. The main MR sequences included perfusion MR imaging and conventional Gd-enhanced SE T1WI. Enhancement ratios of the various anatomic regions of femoral heads in hips with hyperabduction were compared with those in hips with neutral position. The corresponding histologic findings were evaluated. Results: The enhancement ratios of physes and Spongiosas of femoral heads with hips in hyperabduction were significantly less than those in normal physes and Spongiosas(P<0.05). Physes and spongiosas with hyperabduction enhanced significantly slower than those with neutral position(P<0.05). The MRI appearances of growth cartilage after ambulation were the same as those before abduction. Histologic findings showed no evidence of osteonecrosis or necrosis of chondrocyte. The transphyseal vessels in these piglets with hyperabduction were confirmed histologically. Conclusions: Perfusion MRI can detect super-early ischemia of growth cartilage of femoral head induced by hips with hyperabduction.
2007 Vol. 18 (2): 136-139 [Abstract] ( 1153 ) HTML (0 KB)  PDF  (0 KB)  ( 389 )
       论著摘要
140 CT diagnosis of sclerosing hemangioma of the lung(report of 7 cases)
GENG Li-li;LI Hai-bo;LIU Ling
DOI:
2007 Vol. 18 (2): 140-141 [Abstract] ( 969 ) HTML (0 KB)  PDF  (0 KB)  ( 351 )
142 Echocardiographic diagnosis of fetal tetralogy of Fallot
WANG Hui-fang;LIU Lan-fen;WANG Yue-mei;ZHANG Su-ge;YIN Hong;WANG Hui
DOI:
2007 Vol. 18 (2): 142-143 [Abstract] ( 1249 ) HTML (0 KB)  PDF  (0 KB)  ( 426 )
143 Analysis of false-negative causes for acute appendicitis by color Doppler flow imaging ultrasonic diagnosis
LUO Yun-qing;ZHANG Yan-feng;SHEN Chun-fu
DOI:
2007 Vol. 18 (2): 143-144 [Abstract] ( 1051 ) HTML (0 KB)  PDF  (0 KB)  ( 250 )
144 Clinic and image investigation of uterine lipoma
LUAN Zhi-yong;XU Wei-dong;SHI Yue;WANG Quan-ying;ZHOU Jun
DOI:
2007 Vol. 18 (2): 144-146 [Abstract] ( 1020 ) HTML (0 KB)  PDF  (0 KB)  ( 263 )
146 Clinical observation of color Doppler flow imaging in diagnosis and therapy of deep venous thrombosis in lower limbs
LI Ming
DOI:
2007 Vol. 18 (2): 146-147 [Abstract] ( 1002 ) HTML (0 KB)  PDF  (0 KB)  ( 240 )
148 CT and MRI diagnosis of vertebral eosinophilic granuloma
CHEN Jian-hua;KANG Wu-gen;SHENG Liang;LI Jun-miao
DOI:
2007 Vol. 18 (2): 148-149 [Abstract] ( 1093 ) HTML (0 KB)  PDF  (0 KB)  ( 213 )
150 Diagnostic value of linear tomography in teeth fissure fracture
WANG Chuan-tang
DOI:
2007 Vol. 18 (2): 150-151 [Abstract] ( 909 ) HTML (0 KB)  PDF  (0 KB)  ( 239 )
       病例报告
152 Solid pseudo-papilloma of pancreas: one case
CHEN Gang;YE Jian-jun;MA Qiang-hua
DOI:
2007 Vol. 18 (2): 152-152 [Abstract] ( 948 ) HTML (0 KB)  PDF  (0 KB)  ( 251 )
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