屏气

Thickened interlobular septa'looking as the "crazy-paving"'was found in 4 cases in high-resolution CT'correspondence with edema and lymphocyte exudation in interlobular septa in pathological findings.No mediastinal and hilar adenopathy was found. Conclusion The characteristic appearances of PAP on MSCT correspond to its pathological features.

多层CT的问世，使单次屏气时间内完成高质量的全肺薄层扫描成为现实，极大提高了图像的时间和空间分辨率，胸部高分辨率CT还能清晰显示次级肺小叶为单位的肺内细微结构，极大提高了CT在肺部疾病诊断中的应用价值。

Then the contour, and the volume of target and automatic matched field size for collimator at two respiratory phase were compared.

在同一定位条件下，对13例腹部肿瘤患者分别进行平静呼吸状态下吸气完毕屏气及呼气完毕屏气时的CT扫描。

Results The incidence of subcutaneous hemorrhage or bruising was significantly lower in breath holding group than that in control group

结果 屏气组的淤斑发生率4.1％显著低于对照组11.5％（P〈0.001）；短时压迫情况下，屏气组淤斑发生率显著低于对照组（2.4％和7.6％，P〈0.05）。

Purpose: To evaluate whether a single-breath hold and single-level test bolus-injection dynamic scanning was a good way of defining the portal contrast media peak time and its preliminary application with spiral CT portography.

目的 ：探讨一次屏气试验剂量团注单层动态扫描是否能很好确定门脉造影剂峰值及其在SCTP成像中的应用价值。

The results of blood flow in the main portal vein under basal fasting conditions by using the cine phase-contrast MRI and 2D PC MRI with breath-holding in three types including normal inspiration and normal expiration and eupnea were compared.

空腹状态下采用CinePC技术对门静脉血流定量测量，同期采用2DPC技术3种不同屏气状态（正常吸气屏气，呼气屏气，平静呼吸屏气）与其进行比较。

The only required treatment may be inflating the eustachian tube by performing Valsalva's maneuver several times a day.

需要治疗的唯一可能是夸大咽鼓管表演屏气的动作一天数次。

Methods Catphan phantom scans on GE LightSpeed VCT were used to optimize the protocols for HRCT application with helical scan modes.

多排螺旋CT扫描可以在一次屏气中得到高分辨力的容积数据，并可与常规胸部CT通过1次扫描不同方法重建完成，受到国内外学者的关注[1-2]。

As Henri Cartier Bresson once said : To photograph is to hold one's breath, when all faculties converge to capture fleeting reality.

"由于亨利列松曾说："要照片，是屏气，当所有院系收敛捕捉稍纵即逝的现实。

The optimal reconstruction windows of patients with stable HR(≤75 bpm and≥91 bpm) were concentrated in 71%,ranged from 65%-80%, and in 41%,ranged from 32%—50%,respectively.The prospectively ECG-gated DSCT coronary angiography can be used in patients with stable HR(≤75 bpm and≥91 bpm) in abstract.②To explore the clinical application of prospectively ECG-gated transverse DSCT coronary angiography.Methods Two hundreds patients[Body mass index:23-25 kg/m~2,122 patients(average HR≤75 bpm),78 patients(average HR≥91 bpm)]with suspected or known coronary artery disease underwent prospectively ECG-gated transverse DSCT coronary angiography,among them,30 patients underwent selectively coronary angiography,grouping them into 2 groups according to the average HR of scanning.Group A(17 cases,HR≤75 bpm),group B(13 cases, HR≥91 bpm),the DSCTA results were compared with SCAG.Then,calculate the accuracy of patients in each group and evaluate the agreement of accuracy between DSCTCA and SCAG by Kappa statistics.

方法回顾性分析200例行适应性前瞻性心电门控双源CT冠状动脉血管成像的患者(排除扫描过程中，屏气配合差，出现心律不齐的患者及行支架置入或搭桥术后复查的患者)，包括屏气时平均HR≤75 bpm患者122例，HR≥91 bpm患者78例；其中30例同期行选择性冠状动脉血管造影，按屏气时HR将其分为2组，A组17例：HR≤75 bpm，B组13例：HR≥91 bpm，分别与金标准SCAG对照，计算2组患者的阳性诊断准确率，应用SPSS 13.0统计学软件，利用Kappa检验比较每组患者的2种诊断方法诊断结果的一致性，利用两样本率x~2检验，比较2个心率组间的诊断准确率有无明显统计学差异，并计算此30例患者的平均有效辐射剂量。

Methods Ninety NSCLC patients underwent curative surgical resection after integrated 18F-FDG PET/CT and chest breath-hold spiral CT examination. Two experienced radiologists blindedly staged all primary tumors in consensus by CT and PET/CT images.

90例经手术病理证实的NSCLC患者均于原发肿瘤切除术前行18F-FDG PET/CT和胸部屏气螺旋CT扫描，由两名有PET/CT诊断经验的影像医师采用双盲法分别根据屏气CT和PET/CT图像对肿瘤行T分期。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。