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Objective To analyze spectral curves and iodine levels in normal adult thyroid by using dual-source CT scanning technique and provide the basis for the differential diagnosis of thyroid space-occupying lesions.Methods A total of 70 subjects were selected for this study,including 38 females and 32 males.They were excluded from thyroid disease by ultrasound examination and had all taken the dual-source CT scan.The image data were transported to the CT workstation,the analysis of iodine levels and spectral curves were completed in theLiver VNCandMonoenergetic modes respectively.The gender differences in ratio iodine content were compared.Results The iodine ratio of thyroid was (1.35±0.19) mg/mlin plain scan,(1.35±0.23) and (1.35±0.21) mg/ml in left lobe and right lobe respectively.There was no statistically significant difference between left and right lobe (P ＞ 0.05),as well as between females and males (P ＞ 0.05).The slopes of the energy spectrum curve in the left and right lobe of the thyroid were 9.98 ± 2.43 and 9.74 ± 1.63,respectively,and 9.88 ± 1.74 and 9.74 ±0.09 for the male and female,respectively.There was no significant difference of slopes of the energy spectrum curve between the left and right lobe,as well as the male and female.The average dose length product of all patients was (208.29 ±21.80) mGy·cm,and the average effective dose was (1.23 ± 0.13) mSv.Conclusions Dual-source dual-energy CT scanning technique have definitive,diagnostic characteristic in the measurement of spectral curves and calculation of the ratio of iodine in normal adult thyroid tissue,and therefore has guidance value in the diagnosis of thyroid space-occupying lesions.
RESUMO
OBJECTIVE To select inspect and scientifically appraise the current hand liquid disinfectants using in clinics.METHODS The randomly selected medical care personnel,were divided into 3 groups with using the Daniel-surgical skin liquid disinfectant,the Jifro disinfectant gel or the clean skin disinfection fluid,respectively in order to compare hands washing effect,and adverse reactions using the chi-square test to carry on statistics processing.RESULTS All 3 kinds of disinfectants might meet the requirements for application,the qualified rate of the Daniel was 100%,without any anaphylaxis and the Jifro had long-term application and unknown origin of anaphylaxis.CONCLUSIONS The Daniel surgical skin liquid disinfectant with its Daniel-autosterilizer for hand cleaning is of choise in the operating rooms and other key departments.
RESUMO
Objective To evaluate the diagnostic value of MRI and MRS in the prostatic diseases.Methods Clinical data together with MRI and MRS findings were reviewed retrospectively in 16 cases with benign prostate hyperplasia(BPH) and 6 cases with prostate carcinoma(PC) which were confirmed with pathology.MRI observation was focused on the size of the gland,the location of the lesion,the signal features and the extent of the tumor.MRS observation included the chemical shift of citrate(Cit),choline(Cho) and creatine(Cr)spectra,and the ratio of(Cho+Cr)/Cit.Results BPH appeared as irregular enlargement of the whole prostate gland.On T2WI,the central zones of the gland were marked enlargement,there were many different-size similar round low-signal or high-signal intensity nodular lesions in peripheral zones in 13 cases,some low-signal nodular with low-signal false capsules were found and the peripheral zone were compressed obviously.In 6 patients with PC,5 cases localized low-signal area in the periphery and 1 case localized low-signal area in the centre,the tumors localized within the prostate capsule in 2 cases,breakthrough the prostatic capsule in 4 cases with seminal vesicle and the neurovascular bundles involved,the lymph node in pelvis and the bone of pelvis were involved in 1 case.On MRS,Cit elevated obviously,Cho elevated slightly,(Cho+Cr)/Cit ratio was not high,average 0.60 in BPH.In PC,Cit dropped obviously,Cho elevated obviously,(Cho+Cr)/Cit ratio elevated,average 2.51.The metabolic ratios between the BPH and PC were of remarkable statistically difference(t=0.353,P