RADILOGY MCQ---view of chest x ray

MCQs on view of chest x ray 

Q1.The chest view which is often useful to determine whether pleural abnormalties represent freely flowing fluids
a.The PA view
b. The lateral view
c.Lateral decubitus view
d.Apical lordotic view


Q2. For  visualization of diseases of lung apices,which view of chest is preferred
a. PA View
b.Lateral view
c.Lateral decubitus view
d.Apical lordotic view



ANS---1===C==LATERAL DECUBITUS POSITION
             2===D==APICAL LORDOTIC VIEW

PA vs AP

This is the simulated patient in PA (posterioranterior) position.
Note that the x-ray tube is 72 inches away.

Left, in the supine AP (anteriorposterior) position the x-ray tube is 40 inches from the patient. 

This is a PA film on the left compared with a AP supine film on the right.
The AP shows magnification of the heart and widening of the mediastinum.  Whenever possible the patient should be imaged in an upright PA position.  AP views are less useful and should be reserved for very ill patients who cannot stand erect.

PA VIEW  ---

• X ray pass from posterior to the anterior of the paients .
• Edges of scapula are retacted laterally with only small portion projected over the lung field.
• It assess the cardiac size more acurately

AP VIEW ---

• X ray pass from  anterior to posterior of  the patients.
• Scapula is not retarcted laterally and remain projected over the lung field.
• Here cardiac size is exaggerated.

Lateral decubitus position

The patient can also be examined in a lateral decubitus position. This could be heThe patient can also be examined in a lateral decubitus position. This could be helpful to assess the volume of pleural effusion and demonstrate whether a pleural effusion is mobile or loculated.s air trapping.

REF