常规摄取标准正位及左侧位胸片，测量胸腔前后径及横径，计算胸腔前后径与横径之比率。
The standard P-A and left lateral chest film were taken and the A-P diameter and transverse diameter of the chest were measured, and the ratio between the both was calculated.
材料和方法：22例均行心脏正位及左侧位食道吞钡摄片，19例经手术证实，2例经造影证实，1例经彩超证实。
Materials and Methods: 22 patients were radiographed in PA view and left lateral view with esophageal barium swallow, 19 were confirmed by operation, 2 by angiography, 1 by US doppler.
研究包括了三位患者，均患有常规的神经学检查不能解释或作出定位诊断的左侧肢体麻木。
The study involved three patients, all of whom had been suffering from numbness in their left side that could not be explained or identified with standard neurological tests.
另一位摄影师恰巧出现在身后摄影师的镜头中，他正在调试摄像机，左侧是他的装备包和折叠椅。
Quite by accident, another photographer was caught in one of the images checking his video camera. Visible to his left are an equipment bag and a collapsible chair.
触诊时最好用指尖，病人处仰卧位或左侧卧位。
Palpation is best accomplished using the fingertips, with the patient either supine or in the left lateral decubitus position.
颈动脉血管摄影显示为一位于左侧海绵窦内之大型颈动脉瘤。
Carotid angiography showed a large aneurysm of internal carotid artery in left cavernous sinus.
对于胃镜检查的病人，正确的姿势应该是左侧卧位，屈膝。
For patients taking the upper gastroscopy, the right position is lying on the left side, with knees bent.
图3，左侧颈动脉DSA侧位片显示左侧后交通动脉瘤。
双能X线吸收法(DXA)测量后前位第1 - 4腰椎，左侧股骨颈、股骨干、大转子及总股骨的BMD。
BMD was measured at the posteroanterior lumbar spine 1-4, left femoral neck, femoral shaft, trochanter and total hip by dual-energy X-ray absorptiometry (DXA).
双能X线吸收法(DXA)测量后前位第1 - 4腰椎，左侧股骨颈、股骨干、大转子及总股骨的BMD。
BMD was measured at the posteroanterior lumbar spine 1-4, left femoral neck, femoral shaft, trochanter and total hip by dual-energy X-ray absorptiometry (DXA).
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