Objective To explore the value of cardiovascular magnetic resonance feature tracking (CMR-FT) in quantita tive evaluation of myocardium deformation in patients with hypertrophic cardiomyopathy (HCM).Methods Sixteen HCM patients (HCM group) and 18 healthy volunteers (control group) were enrolled and measured with CMR-FT.The differences of left ventricular (LV) end diastolic volume (LVEDV),LV end systolic volume (LVESV),LV ejection fraction (LVEF),left ventricular mass (LVMASS) and LV global radial strain (RS),LV global circumferential strain (CS) were compared between the two groups.The correlations between segmental wall thickness and segmental RS and CS were studied.And the correlation among global RS,CS and LVEDV,LVESV,LVEF,LVMASS were analyzed.Results LVMASS in HCM group was higher than that in control group ([133.74±79.13]g vs [76.87±14.15]g,P=0.01).No sig nificant differences of LVEDV,LVESV,LVEF were found between HCM group and control group (all P＞0.05).Global RS and CS were significantly lower in HCM group than those in control group (RS:[27.05 ± 13.35]％ vs [40.62 ± 4.92] ％,P＜0.01;CS:[-8.68± 5.56] ％ vs [-20.73 ± 1.56] ％,P＜0.01).No significant correlations was observed between segmental wall thickness and segmental RS (r=-0.41,P＜0.01),CS (r=0.28,P＜0.01),respectively.In HCM group,no significant correlations was observed between global RS (r=-0.36,-0.41,0.22,-0.36),CS (r=0.34,0.10,0.22,0.42) and LVEDV,LVESV,LVEF,LVMASS,respectively (all P＞0.05).Conclusion CMR-FT is conducive to quantitative evaluate myocardial deformation in HCM patients.

ObjectiveTo evaluate the impact of patient's heart rate(HR)on coronary CT angiography(CTA)image quality(IQ)and reconstruction timing in dual-source CT(DSCT).Methods Ninety-five patients with suspicion of coronary artery disease were examined with a DSCT scanner(Somatom Definition.Siemens)using 32×0.6 mm collimation.All patients were divided three groups according to the heart rate(HR):group 1,HR≤70 beats per minute(bpm),n=26;group 2,HR＞70 bpm to≤90 bpm, n=37;group 3,HR＞90 bpm,n=32. No beta-blockers were taken before CT scan.50-60 ml of nonionic contrast agent were injected with a rate of 5 ml/s. Images were reconstructed from 10%to 100% of the R-R interval using single-segment reconstruction. Two readers independently assessed IQ of all coronary segments using a 3-point scale from excellent(1)to non-assessable(3)for coronary segments and the relationshiD between IQ and the HR. ResuitsOverall mean IQ score was 1.31 ±0.55 for all patients with 1.08±0.27 for group 1,1.32±0.58 for group 2 and 1.47±0.61 for group 3. The IQ was better in the LAD than the RCA and LCX(P＜0.01).Only 1.4%(19/1386)of coronary artery segments were considered non-assessable due to the motion artifacts.Optimal image quality of all coronary segments in 74 patients(77.9%)can be achieved with one reconstruction data set.The best IQ was predominately in diastote(88.5%)in group 1,while the best IQ was in systole(84.4%)in group 3. ConclusionsDSCT can achieve the optimal IQ with a wide range of HR using single-segment reconstruction. With the increasing of HR,the timing of data reconstruction for the best IQ shifts from mid-diastole to systole.

Objective To explore the nutritional status and determinants among rural stranded children under 7 years of age. Methods The group of stranded children (n=7585) and the children for control (n=7557) were identified by multi-stage stratified cluster sampling. The ascertainment methods mainly included questionnaire, anthropometric measurements and laboratory examination. Results In this study, there were three groups, including the group of stranded children whose single parent left home to look for better job somewhere, the group of stranded children whose parent both left home and the third group serving as control. Prevalent rates on the following items were: stunting -- 14.9%, 17.9% and 16.3%, underweight -- 7.2%, 8.3% and 7.6%, wasting -- 3.1%, 3.4% and 3.3% and anemia -- 18.9%, 20.6%, 18.7% respectively. The prevalent rate of stunting in the group of children with both parents away from home was significantly higher than that those with only one parent did. The prevalence rate of anemia in the group with both parents away from home was significantly higher than that in the control group. Based on multivariate non-conditional logistic regression analysis, the determinants of stunting among the stranded children were: age, with low birth weight, living alone, being the only child in the family, mother's education level, frequency of eating breakfast and snacks every week, motives of caretakers and the relationship between children and the caretakers. The determinants of underweight among those stranded children were: age of child, with low birth weight, the frequency of eating snacks every week, motives of the caretakers and having rickets. Conclusion The nutritional status among rural stranded children was relatively poor, especially in those whose parents were both away from home, which calls for urgent improvement.

Objective To explore knowledge, attitude, practice (KAP) and related determinants on nutrition among caregivers of those rural stranded children under 7 years of age in China and to provide evidence for setting up relevant health education program. Methods 1691 caregivers of the stranded children randomly selected were surveyed by a standard questionnaire. Logistic regression models were used to screen the determinants on KAP regarding nutrition. Results Rates on awareness, positive attitude and approprite behavior were lower in caregivers of children whose parents both left (47.8%, 55.4%, 41.8%, respectively) the countryside, when compared with those only one parent was away from home (59.9%, 59.5%, 38.0%, respectively). Data from multivariable logistic regression models showed that caregivers' KAP on nutrition was related to age, educational background, average family income, and willingness on the job as well as the age of the child. Conclusion Improving caregivers' KAP on nutrition and setting up appropriate health education program were in urgent need.

OBJECTIVETo study clinic character of liver failure complicated with bacterium and fungous infection.

METHODSThe patients with liver failure complicated with bacterial and fungous infection who were treated in our hospital from January 1986 to June 2006 were studied. All patients had clinical manifestation and positive of bacterium. The data were statistical analysis.

RESULTS507 patients diagnosed with fungous infection were found from January 1986 to June 2006 in which 132 patients were diagnosed with bacterial and fungous infection. There were 85 patients (64.39%) with chronic severe hepatitis and 40 patients (30.3%) with decompensation cirrhosis. Bacterial infection happened in 153 cases in which the rate of nosocomial infections was 54.90%. 204 bacterial strains were separated in which 143 strains (70.10%) were gram-negative bacterium and 61 (29.90%) strains were gram-positive bacterium. The main sites of bacterial infection were abdominal cavity (122 cases) and lung (30 cases). Fungous infection happened in 143 cases in which the rate of nosocomial infections was 86.71%. 155 fungous strains were separated in which 90 strains (58.06%) were Candida albicans, 17 strains (10.97%) were Aspergillus fumigatus and 25 (16.13%) strains were non-Candida albicans. The main sites of fouguns infection were lung (94 cases) and mouth (53 cases). 84 patients (63.64%) were ineffective and died after treatment.

CONCLUSIONThe patients with decompensation cirrhosis and chronic severe liver hepatitis were easy to be infected by bacterial and fungous. the rate of fungous nosocomial infections is higher than that of bacterium. The prognosis is bad in patients who had secondary fungous infection.

Adolescent ; Adult ; Aged ; Bacteria ; isolation & purification ; Bacterial Infections ; complications ; microbiology ; Cross Infection ; microbiology ; Female ; Fungi ; isolation & purification ; Humans ; Liver Failure ; complications ; pathology ; Male ; Middle Aged ; Mycoses ; complications ; microbiology ; Retrospective Studies ; Young Adult

Objective To compare the efficacy and complications of the extend endoscopic endonasal approach (EEA) and open transcranial approach for resection of craniopharyngiomas. Methods The clinical data from 46 patients with craniopharyngiomas with extend EEA and 54 patients with transcranial route in our department was analyzed retrospectively. The gross total resection (GTR) rate,length of hospital stays and complications of the two groups were compared. Results The tumor diameters of were larger in the endoscopic group than in the transcranial group (3.5 ± 1.3cm vs. 3.0±0.8 cm, P<0.05). The endoscopic group had a greater GTR rate (67.4％vs. 46.3％, P<0.05)and improved visual outcome(84.2％ vs. 59.5％,P<0.05),but lower rate of hypopituitarism (56.5％ vs. 75.9％,P<0.05)and permanent diabetes insipidus (51.4％ vs.72.7％,P<0.05). On the contrast, the endoscopic group had a greater rate of cerebrospinal fluid leak(4.3％ vs. 0.0％,P>0.05)and longer hospital stays(17.0±3.6 d vs. 13.1±2.3 d,P<0.01). Hyposmia(34.8％)and hemorrhinia (2.2％)only happened in the endoscopic group. Conclusion Compared with transcranial route, the extend EEA for craniopharyngiomas is minimal invasion and effective, which can effectively improve the GTR rate and reduce the clinical symptoms.

OBJECTIVETo compare the coronary artery bypass graft (CABG) imaging between 16-slice spiral CT and 64-slice spiral CT.

METHODSTotally 27 patients with CABG received multi-slice spiral CT imaging and the results were retrospectively analyzed. Among them, 8 patients received 16-slice spiral CT scanning, 19 patients received 64-slice spiral CT scanning.

RESULTSThe evaluability rates of 64-slice spiral CT in evaluating the proximal anastomosis, bypass graft, distal anastomosis, and distal blood vessel were 100%, 100%, 90.2%, and 93.9%, respectively, while those of 16-slice spiral CT were 92.3%, 95.2%, 90.0%, and 90.0%, respectively. The patency rates of the above four aspects of 64-slice spiral CT were 66.7%, 70.0%, 71.7%, and 70.0%, respectively, while those of 16-slice spiral CT were 83.3%, 85.0%, 83.3%, and 88.9% .

CONCLUSIONS64-slice spiral CT is superior to 16-slice spiral CT in CABG imaging. It can be used as a non-invasive tool for the post-operative follow-up of CABG.

Aged ; Coronary Angiography ; methods ; Coronary Artery Bypass ; Coronary Disease ; diagnostic imaging ; surgery ; Female ; Graft Occlusion, Vascular ; diagnostic imaging ; Humans ; Male ; Middle Aged ; Postoperative Period ; Retrospective Studies ; Sensitivity and Specificity ; Tomography, Spiral Computed ; methods

OBJECTIVETo explore the scan technique and image quality of coronary angiography with dual source computed tomography (CT) without oral metoprolol preparation.

METHODSPlain and enhanced dual source CT coronary angiography without oral metoprolol preparation was prospectively performed in 600 patients. Calcium scoring with plain scan images as well as multi-planar reconstruction (MPR), maximum intensity projection (MIP), and volume rendering technique (VRT) reconstruction with enhanced scan images were performed in all cases. The scan technique and post-reconstruction experience was summarized. The image quality was classified as 1 to 4 points, and coronary segments classified according to the American Heart Association standards were evaluated.

RESULTSThe average calcium score of the 600 cases was 213.6 +/- 298.7 (0-3,216.5). The average heart rate of the enhanced scan was 82.1 +/- 16.2 (47-139) bpm. The post-reconstruction methods with which coronary segments could be shown as best as possible consisted of single phase reconstruction method, two or more phases supplemented method, and electrocardiogram editing method. Altogether 8,457 coronary segments were evaluated, among which 97.2% were evaluated as point 1, 1.7% point 2, 0.5% point 3, and 0.6% point 4. The coronary segments in 261 cases were completely normal, while 360 segments were diagnosed with < 50% stenosis and 625 segments with > or = 50% stenosis.

CONCLUSIONSExcellent coronary artery image can be obtained with dual source CT in patients with any heart rate without oral metoprolol preparation. Heart rate is not a major source of the artifact, coronary segments can be well shown with single or multiple-phase reconstruction method.

Adult ; Coronary Angiography ; Female ; Heart Rate ; Humans ; Male ; Middle Aged ; Tomography, X-Ray Computed ; methods

Objective To explore the scan technique and image quality of coronary artery imaging with dual-source CT without oral Betaloc preparation.Methods Plain and enhanced dual-source CT coronary artery imaging without oral Betaloc preparation was performed in 215 patients with clinically suspected coronary heart disease or early-stage coronary lesions.Calcium scoring with plain scan images and multi-planar reconstruction(MPR),maximum intensity projection(MIP)and volume rendering technique (VRT)reconstruction with enhanced scan images were made in all cases.The scan technique and post reconstruction experience was summarized.The image quality was classified as three grades,and coronary segments classified according to AHA standards were evaluated.Results The median of calcium score of the 215 cases was 82.2(2.3—1827.9).The average heart rate of the enhanced scan was(80.6?15.3) (57—139)bpm.The post reconstruction methods with which coronary segments could be shown as best as possible consisted of(1)multiphases screening methods,(2)bi-phase or multiple-phase complement method,and(3)premature beat removing or arrhythmia shifting method.Altogether 3026 coronary segments were evaluated,among them 97.5% were evaluated as grade 1 image quality,2.0% were evaluated as grade 2 and 0.5% were evaluated as grade 3.The coronary segments in 91 cases were completely normal, while 112 segments with

Objective To explore the scanning technique and image quality of coronary artery imaging with dual-source CT without oral Betaloc preparation in the patients with high heart rate.Methods 412 cases were undergone coronary imaging with dual-source CT (including plain and enhanced scans) ,among them,there were 30 cases with heart rate more than 100 bpm.Multi-planar reconstruction(MPR),maximum intensity projection(MIP) and volume rendering (VR) were performed using contrast-enhanced images.The image quality was classified into 3 grades, and coronary segments named according to AHA standard were evaluated.Results The average heart rate during enhanced scan in the 30 cases was (115.6?11.8)(101～139)bpm,the average breath hold time was (5.7?1.2) s.The best reconstruction phase was in the systolic phase. Altogether 424 coronary segments were evaluated, among them 93.9%(398/424)belonged to the first grade,5.0%(21/424)belonged to the second grade,and 1.2%(5/424) belonged to the third grade. Conclusion Without oral administration of Betaloc preparation, good coronary artery images can be obtained in the patients with high heart rate by dual-source CT.