. X-ray observations for foreign bodies and their localisation . of the angle ofrotation of the eye on a milli-metre to the centimetre Illustration 27. Geometrical construction of the angle of rotation of the eye. in order to come to a definite conclusion. Besides turningthe limb or body, use should be made of the oblique rays, bylong displacement of the tube, in the hope of being able tothrow the shadow free from bony structures. It is even more difficult to decide the location of a foreignbody in the thorax, abdomen, or pelvis. A projectile in thelung may
. X-ray observations for foreign bodies and their localisation . of the angle ofrotation of the eye on a milli-metre to the centimetre Illustration 27. Geometrical construction of the angle of rotation of the eye. in order to come to a definite conclusion. Besides turningthe limb or body, use should be made of the oblique rays, bylong displacement of the tube, in the hope of being able tothrow the shadow free from bony structures. It is even more difficult to decide the location of a foreignbody in the thorax, abdomen, or pelvis. A projectile in thelung may move with respiration or not, depending upon itslocation ; at the root there would be little if any movement,while at the base the excursion may be considerable. How-ever, it must not be forgotten that a foreign body may be pre-vented from moving and yet be in a lung restricted by adhesions. X-Ray Observations for Foreign Bodies 37 On the other hand, the moving shadow of the ribs mayimpart to the foreign body an apparent movement it does notpossess. Further, the presence of air or fluid in the pleuralcavity will complicate matters, and with a projectile fairlysupe
Size: 1589px × 1573px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookpublisherstlou, bookyear1920
