Chapter53 -positioning for Radiology

Vocab & Abbreviations

Bucky

Contains a movable grid device that absorbs scatter radiation and also contains the image receptor

central ray (CR)

The center of the x-ray beam and perpendicular to the long axis of the x-ray tube.

collimation

The method of restricting and confining the x-ray beam to a given area

distortion

The differences between the actual subject and its radiographic image

exposure indicator (EI)

A numeric value indicating the quantity of ionizing radiation received by a digital radiographic image receptor; also called an exposure index.

image receptor (IR)

The device that receives the energy of the x-ray beam and forms the time of the body part

landscape orientation

The width is greater than its height

object-to-image receptor distance (OID)

The distance between the subject and the image receptor

portrait orientation

The height is greater that its width

radiation protection

The measures taken to safeguard patients, personnel, and the public from unnecessary exposure to ionizing radiation

source-to-image-receptor distance (SID)

The distance between the tub target and the image receptor. 

RAO

mAs

Milliamperes seconds

HIPPA

Health Insurance Portability and Accountability Act

OID

object image receptor distance

LPO

left posterior oblique

CR

central ray

LAO

left anterior oblique

kVp

Kilovolts peak

SID

Source to image receptor distance

RPO

Right posterior oblique

IR

Image receptor

MCP

metacarpophalangeal joint

ASIS

Anterior Superior Iliac Spine