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Flashcards in Position Deck (20)
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The term "position," is used two ways in radiology. What are the two ways?

One way identifies overall posture of patient or the general body position (upright, seated, or supine.).
The other way refers to the specific placement of the body part in relation to the radiographic table or IR *during imaging.*



Lying on the back, facing upward.



Lying on abdomen, facing downward.


Erect (upright)



Recumbent position

Lying down in any position.
Dorsal recumbent (lying on back supine.)
Ventral recumbent (lying face down prone.)
Lateral recumbent (lying on side-right or left.)


Trendelenburg position

Supine position with head tilted downward.


Fowler's position

Recumbent position with the body tilted so that the head is higher than the feet.


Sim's position

A recumbent position with the patient lying on the left anterior side (semiprone) with the left leg extended and the right knee and thigh partially flexed.


Lithotomy position

A supine position with the knees and hip flexed and thighs abducted and rotated externally, supported by ankle supports.


When the term "position" is used to refer to specific body position, how is it described?

By the body part closest to the IR or by the surface on which the patient is lying. (Decubitus)


Describe the right posterior oblique position.

The right posterior body surface is in contact with the radiographic table. The *projection* is an AP oblique projection.


Describe the left anterior oblique position.

The left anterior body surface is in contact with the radiographic table. The *projection* is a PA oblique projection.


When discussing oblique positions of the limbs,

The terms medial rotation and lateral rotation have been standardized to designate the direction in which the limbs have been turned from the anatomic position.


Decubitus position indicates:

That the patient is lying down and that the CR is horizontal and parallel with the floor.


The three primary decubitus positions which are named according to the body surface on which the patient is lying are:

Lateral decubitus (left or right.)
Dorsal decubitus
Ventral decubitus


What position is most often used to demonstrate the presence of air-fluid levels or free air in the chest and abdomen?

The lateral decubitus position.


What projection is associated with a lateral decubitus position?

An AP projection.


What kind of projection is associated with a left ventral decubitus position?

A left lateral projection.


Lordotic position

Is achieved by having the patient lean backward while in the upright body position so that only the shoulders are in contact with the IR, forming an angle between the CR and the long axis of the body and therefore forming an AP axial projection.
Used for visualization of the pulmonary apices.



Some radiographic projections and procedures are named after individuals. For example: AP axial projection is also known as Towne method.