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Objective ToexplorethevalueofMR DKIinevaluationofmicrostructuredamageincervicalspinalcordinjury(CSCI) Methods 32casesofCSCIpatientsconfirmedbyclinicalexaminationand20casesofhealthycontrolgroupwereinvestigatedbyconventional MRIandDKIexamination.AccordingtoT2WIsignal,theinjurygroupweredividedintoA,Bgroup,Agroupofhighsignalgroup(n＝14)andBgroupofnegativegroup (n＝18).A,BgroupsandcontrolgroupweremeasuredbyFA,meandiffusivity(MD)and mean kurtosis(MK)valuesatdifferenttimes (acute,4 weeksafterinjury,2to3 monthsafterinjury)andthedata wereanalyzedby SPSS17.0statisticalsoftware.TheROCcurvewasusedtoevaluatetheabilityofdifferentparametersindiagnosingCSCI.Results In A,BgroupsFAvaluesdecreasedearlyandincreasedgradually,butwerealwayslowerthanthecontrolgroup,andthedifferencewas statisticallysignificant(P＜0.001).InAgroup MDvalueincreasedearlyanddecreasedgradually,butwashigherthanthecontrol group (P＜0.001).InAgroup MKvaluedecreasedearlyandincreasedsignificantly(P＜0.001).InBgroup MDvalueincreasedand MKvaluedecreasedintheacutephase(P＜0.001),lateron MDand MKvaluesgraduallytendtothecontrolgroup,thedifference wasnotstatisticallysignificant(P＞0.05).Conclusion DKIcannoninvasivelyreflectthemicroGdamageofCSCI,whichcannotbedisplayed byconventionalMRIfortheearlydetectionofspinalcordabnormalities.TheFAvalueisofhighdiagnosticvalue.
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We evaluated the patient in the early,advanced or healing phase of the disease by MRI in the treatment of chronic brucellosis spondylitis and to guide the clinical treatment.MRI images of 40 patients with clinically diagnosed chronic brucellosis spondylitis were analyzed retrospectively.The imaging findings of early,advanced and healing patients were summarized.MRI showed abnormal signals in the vertebral body,intervertebral disc,paraspinaI and psoas muscle.It is early stage if the intervertebral space was normal,and advanced stage if combined with interverbral space stenosis.It demonstrated short T1 and short T2 signal or similar to the normal vertebral body,combined with intervertebral space stenosis,for the healing stage.According to the specific imaging manifestations of chronic brucellar spondylitis in the course of disease development,it is possible to evaluate the clinical stage of the disease and guide the rational selection of clinical treatment.
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Objective To explore the diagnostic value of DDR in synovial sarcoma and compare with the traditional X-ray photography. Methods The DDR manifestation of synovial sarcoma patients which confirmed by operation in our hospital was contrasted with the traditional X-ray photography. Results The DDR performance of synovial sarcoma in soft tissue tumors,small bone destruction around the joints and soft tissue swelling,calcification of tumors are superior to traditional X-ray photography. Conclusion The DDR has better X-ray image quality than traditional X-ray,which can provide more diagnostic information and higher diagnostic value in this disease.
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Objective To analyze the roentgenographic findings of the osteopetrosis. Methods Nine patients with clinically suspected osteopetrosis underwent the X-ray examinations of the chest,skull,pelvis,vertebral column,femur,tibiofibula,bones of upper limb and bilateral handbone. The roentgenographs of all patients were analyzed together with review of the literature. Results The basic image feature of osteopetrosis is bone density increased notably,cortible bone thickening,cavum ossis narrowing or occluded and mark X-ray signs include sandwich change in back bone,concentric rings change in pelvis,bone within a bone change,bright-dark alternation transverse striation in metaphysis of tubiform bone,baseball club appearance due to modelling deformity of long bones and periosteal new bone formation. Conclusion Osteopetrosis is a rare inherited disorder. Its mark roentgonographic findings are important evidence for performing the definite diagnosis and differential diagnosis.
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Objective To explore the exposure condition of DDR, screen -film radiography and the radiation dose to patients, and evaluate value of the DDR system. Methods Five thousand images of DDR and screen-film radiography were selected and then analyzed by three junior radiologists and two senior radiologists. Results 1.The quality of the images was classified into grades A ,B ,C: grade A in 92.8 % , grade B in 7.2 % , grade C in 0% ,waste in 0 % for DDR group and grade A in 40.8% , grade B in 41.7 %,grade C in 15.5 % ,waste in 2% for screen-film radiography group. 2. The required voltage of DDR system raises 3-24kV than screen-film radiography and radiation exposure was increased about 25 % . Conclusions The imaging quality of DDR was obviously higher than the screen -film radiography, but the disadvantage of DDR system was the higher exposure condition required, which increase X-ray radiation dose for patients.
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Objective To discuss the application value of aer-barium sulphate double contrast radiograph in digestive tract diseases diagnosis. Methods The author analyzed 197 cases' images retrospectively which had positive performance in radiograph and had been clinical defined in our hospital from January to June 2008. Results In all these cases, there are 83 cases origin from mucous membrane which include inflammation, tumor and anabrosis; 24 cases origin below mucous membrane which include interstitialoma, lymphoma and scleroderma; 38 cases mainly changed in the shape, structure and position of organs which include hiatus hernia, Oblique inguinal hernia, diverticulum, malrotation of intestine and megacolon; 29 cases mainly changed in the power and function of organs which include functional disorder of esophagus, mesentery-compressed syndrome funtional disorder of small intestine and irritable colon; 17 cases' performance caused by the factor outside intestinal canal which include mesentery shift, stomach shift and small intestine shift, and other cases which include fistula between esophagus and mediastinum, rectovaginal fistula, foreign body in esophagus and small intestine ascariasis. Conclusion Aer-barim sulphate double contrast radiograph is the best method to diagnose the digestive tract diseases because it has forte as follow: convenient, easy prepared, less painful, large-scale examine limit and reliable diagnosis.
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10mm in diameter) which were mostly non-functional ones(63.3%), and 12 microadenomas(≤10mm in diameter) which were mostly functional ones(91.7%). Only macroadenonas had abnormal imaging in DR, DSA, while microadenomas had no change in above radiological examinations. Microadenomas appeared in low density on CT or hypointensity in MRI as the direct signs, and CT, MRI contrast enhancement raised its display rate greatly. Macroadenomas showed various contrast in the post enhancement CT or MRI. Contrast enhancement of CT or MRI were capable of delineating size, location, extent of the tumor and the remaining intact pituitary tissue. Conclusion MRI Gd-DTPA contrast enhancement scaning is the first-selecting method to diagnose the pituitary adenomas especially the clinical suspected cases.