21-23

Question 1

21-title

Answer 1

X-RAY BEAM ALIGNMENT WITH
LONG AXIS OF X-RAY TABLE TOP

Question 2

22-title

Answer 2

X-RAY TABLE TOP/ HORIZONTAL ARM/ CROSSARM TEST

Question 3

23- title

Answer 3

TEST FOR GRIDS (UNIFORMITY)

Question 4

Titles

Answer 4

-X-RAY BEAM ALIGNMENT WITH
LONG AXIS OF X-RAY TABLE TOP

-X-RAY TABLE TOP/ HORIZONTAL ARM/ -CROSSARM TEST

-TEST FOR GRIDS (UNIFORMITY)

Question 5

21 Obj. - To check if the axis of the x-ray beams is perpendicular to the x-ray table top or to the plane of the image receptor and centered over the [..] when the x-ray tube is [..] in its [..] for over-the table radiography.

Answer 5

locked
bucky tray
original position

Question 6

21
1. Check first the [..] of the [..] field with the [..] field.
2. Switch on the [..].
3. Bring the tube [..] to table level. Adjust the position of the tube so that the center of the [..] is at the center of the table.
4. Move the tube [..] to the top of the
[..], making sure that the center of the
illuminated remains at the center of the
table. If the illuminated area [..] from the
center beam at the table, it is not aligned.
5. Move the [..] along the table and
repeat the same procedure if the illuminated
area is centered correctly at [..], it indicates that the tube column (support) rack is [..] to the table top.

Answer 6

coincidence
irradiated
illuminated
light beam
almost down
illuminated area
slowly
column
moves
tube column
one end and not at the other end
not parallel

Question 7

22- X-RAY TABLE TOP - To check whether the x-ray tube column is [..] or to prevent [..] of images.

Answer 7

vertical
distortion

Question 8

22 - X-RAY TABLE TOP- materials

Answer 8

Plumb Bob (a weight on the end of a string)

Question 9

22 -vertical column- To check whether the table top is [..] to prevent distortion

Answer 9

column vertical/horizontal

Question 10

22- vertical column- [HCR]
1. Hold the string’s end against the table column making sure that the string is hanging [..].
2. Check whether the column is [..] to the string.
3. Repeat the same procedure with the string held at the [..] of the [..] from the [..]. Check the column against the string.

Answer 10

unobstructed
parallel
column quarter
vertical tube stand
first position

Question 11

22 - HA-mat

Answer 11

Large diameter bowl or bucket -(5) cm depth of water meter rule.

If the horizontal arm is parallel with table then it is congruent.

Question 12

22- HA [PMC]
1. Place the [..] of water on top of x-ray table.
2. Measure the [..] of water around the [..] of the bowl. If the table is [..], the depth of water will [..] the bowl.
3. Check from the [..] with the same procedure.

Answer 12

bowl
edge
vary across
other end of the table

Question 13

22 -CA
Measure the distance between the [..] and the table top in [..] of the cross arm and from the [..] . The arm is [..] if the distance is the same from both ends.

Answer 13

cross arm
front
back
horizontal

Question 14

23- mat

Answer 14

Grid to be tested
Loaded cassette with the same size as the grid
Meter rule
Metal marker

Question 15

23 A -Test for Grid Fitted In a Bucky Tray
1.Place the cassette inside the bucky tray.
2.Place the [..] on the cassette to
indicate the [..] on the cassette tray.
3.Center the x-ray tube to the center of the table and bucky tray using the normal Source-Image-Distance (100cm) with the grid in [..], make an exposure.
4. Process the film the usual way

Answer 15

metal marker
film’s position
stationary position

Question 16

23 Procedure B:Test for a Loose Stationary Grid
1. Inspect the grid for [..].
2. Place the cassette under the grid.
3. Identify with the [..] the position of the grid on the film.
4. Center the x-ray tube to the cassette using
normal SID.
5. Expose the film and process the usual way.

Answer 16

obvious damage
metal marker

Question 17

23- C Test for Bucky Movement mat

Answer 17

• Cassette loaded with film
• Meter rule

Question 18

23-C
1.Place the cassette on the cassette tray.
2. Center the x-ray tube at the center of the
table over the grid using normal SID.
3. Collimate the beam to the size of the film.
4. Set the exposure factor and select the Bucky
techniques.
5. Expose the film and process the usual way.