Univariate analysis demonstrated that mass lesion was significantly more common in lung cancer and findings of normal x-ray, prominent hilum and fibrotic shadow significantly were less common (p<0.05). Multivariate analysis showed mass lesion as strong predictor, and normal chest x- ray and fibrotic...
Classic radiographic findings in patients who havePEinclude Hampton's hump (a wedge-shaped, pleural-based density with the apex pointing toward the hilum) and Westermark's sign (a prominent pulmonary hilum caused by pulmonary vessel dilatation, with relative peripheral oligemia resulting from collapse...
main characteristic of x-ray that is applicable in the field of medicine is: ability to penetrate matter The amount of penetration of an x-ray depends on the ___ and ___ of tissues density, thickness Dense substances appear light or white on x-ray - bone radiopaque low density substances...
27Conclusions Lots of information in a chest x-ray Always read the film in the same order – Never skip to the most prominent abnormality, you will miss a small (but potentially important finding) Compare to priors if possible We will f...
H Hilum & Mediastinum (width, free air) What is the normal cardiac size on CXR? < 50% chest diameter (PA)< 60% chest diameter (AP) How does lobar pneumonia appear on a CXR? confined to a single lobe; may see a prominent fissure with air bronchograms What is an air bronchogram? tu...
The lower portion of the left hilum is formed by the distal interlobar or descending artery and more caudally by the left inferior pulmonary vein. The air columns of the lingular and left lower lobe bronchus may be identified. Occasionally, the venous confluences may be extremely prominent...
PA versus AP radiograph: The heart is magnified and appears larger on radiographs performed with AP projection of the x-ray beam. The right border of the heart on a frontal radiograph is formed by the right atrium as it abuts the right middle lobe. Adjacent to the diaphragm, the inferior...
b Patient is erect and 6 ft ( ca 1.8 m ) from the X-ray tube. It is difficult to see the upper lobe vessels, but the lower lobe vessels are easily seen Fig. 3.5. 患儿体位与距离发射管的距离对放射片的影响 a患儿呈卧位,X-线发射管离胶片的距离大约为46英寸(1.2米)。肺上叶的血管影(箭...