Objective To assess the value of clinical application of spiral ct pulmonary angiography (SCTPA).
目的初步评价螺旋ct肺血管成像(SCTPA)的临床应用价值。
Objective: To evaluate the value of clinical application of three dimensional ultrasound imaging with free hand.
目的：探讨自由臂三维超声成像的临床应用价值。
To evaluate the value of clinical application of CT-guided nasopharyngeal needle biopsy through mandibular notch.
评价CT引导下经下颌切迹鼻咽部穿刺活检术的临床应用价值。
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