MOBILE RADIOGRAPHY MERRILL’S VOL. 3 CH. 28. POWER SUPPLIES CAPACITOR DISCHARGE UNITS BATTERY POWERED UNITS.

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Presentation transcript:

MOBILE RADIOGRAPHY MERRILL’S VOL. 3 CH. 28

POWER SUPPLIES CAPACITOR DISCHARGE UNITS BATTERY POWERED UNITS

POWER DRIVE DRIVE MOTOR, BATTERY POWERED DEADMAN-TYPE DRIVE SWITCH EXTREME CARE MUST BE TAKEN WHEN DRIVING !

KVP BATTERY-POWERED UNIT HIGHER AVERAGE PHOTON ENERGY CAPACITOR DISCHARGE UNIT VOLTAGE DROPS DURING EXPOSURE

MAS MOST MOBILE UNITS NOT CAPABLE OF HIGH MAS VALUES USED IN STATIONARY UNITS KVP CAN BE MANIPULATED TO OBTAIN SUFFICIENT DENSITY

RADIATION SAFETY S HIELDING T IME D ISTANCE

GRID USE PART IS MORE THAN 10CM THICK HIGH KVP NEEDED CR ALONG CENTRAL AXIS OF GRID ANGLE CR ALONG DIRECTION OF LEAD STRIPS FIND TUBE SIDE OF GRID

MILD CUT OFF CR3” OFF CENTER

MODERATE CUTOFF CR 5”OFF CENTER

CHEST RADIOGRAPHY

QUICK TIPS POSITION CR AND SET TECHNIQUE PRIOR TO POSITIONING PATIENT USE SHORT EXPOSURE TIMES TO REDUCE MOTION

EVALUATION CRITERIA CLAVICLES POSITIONED ON SAME PLANE SCAPULAE IN LUNG FIELD HUMERI ABDUCTED OUT OF FOV MANUBRIUM SUPERIMPOSED OVER T4 1” OF APICES DEMONSTRATED ABOVE CLAVICLES

CORRECT

PATIENT CHALLENGES KYPHOSIS SEMI-UPRIGHT/SUPINE/CR 5-10DEGREES CEPH. UNCONSCIOUS/VENTILATED PATIENT SLIDE CASSETTE UNDER BED SHEET/WATCH RESPIRATIONS

SCOLIOSIS VS ROTATION ROTATION DISTANCE FROM VERTEBRAL COLUMN TO LUNG EDGES UNIFORM DOWN LENGTH OF LUNG SCOLIOSIS DISTANCE FROM VERTEBRAL COLUMN TO LATERAL LUNG EDGES VARIES DOWN LENGTH OF LUNG FIELD. VARIATION INCREASES W/ SEVERITY OF SCOLIOSIS

CXR/SCOLIOSIS

EXPIRATION

ARMS IN FOV

LORDOTIC

CAUDAL ANGLE

PEDIATRIC CHEST

EVALUATION CRITERIA DISTANCES FROM VERTEBRAL COLUMN TO STERNAL ENDS OF CLAVICLES EQUAL LENGTHS OF R & L POSTERIOR RIBS EQUAL ANTERIOR RIBS PROJECTED DOWNWARD POSTERIOR RIBS DEMONSTRATE MILD CEPHALICALLY BOWED CONTOUR 8 POSTERIOR RIBS ABOVE DIAPHRAGM

NEONATE CORRECT

NOT FULL EXPIRATION

ROTATION TO L SIDE

LORDOTIC/POSTERIOR RIBS PROJECTED UPWARD/CR TOO LOW

CHIN IN LUNG FIELD

EXPIRATION/CR CEPHALIC ANGLE

CR TOO CAUDAL

DECUBITUS CXR

POSITIONING TIPS AP PROJECTION IS EASIER FOR POSITIONING BEND KNEES & SUPPORT W/PILLOW TO PREVENT FORWARD ROTATION

EVALUATION CRITERIA ARMS, MANDIBLE, & LATERAL BORDERS OF SCAPULAE OUTSIDE LUNG FIELD CLAVICLES PROJECTED UPWARD MANUBRIUM SUPERIMPOSED ON T POSTERIOR RIBS ABOVE DIAPHRAGM SUPPORT PAD NOT IN LUNG FIELD

CORRECT

INCORRECT/LFT SIDE CLOSER TO IR/ARM AT 90 DEGREE ANGLE

MANUBRIUM OVER T5/LEANING FORWARD

PEDIATRIC DECUBITUS CXR

CORRECT

ROTATED TOWARDS L

R SIDE ROTATION& CHIN

ARM INLUNG/EXPIRATION

MOBILE ABDOMEN

PATIENT CHALLENGES PATIENT SIZE MOTION VOLUNTARY INVOLUNTARY LINES/TUBING

MOTION

INVOLUNTARY MOTION

DECREASE MA FOR PATHOLOGY

SCOLIOSIS VS ROTATION ROTATION SPINOUS PROCESS LOCATION OFF VERTEBRAL COLUMN APPEARS STRAIGHT SCOLIOSIS SPINOUS PROCESSES STRAIGHTEN OUT VERTEBRAL COLUMN DEMONSTRATES LATERAL DEVIATION

ROTATION

SCOLIOSIS

DECUBITUS ABDOMEN

EVALUATION CRITERIA UNIFORM DENSITY ACROSS ABDOMEN SPINOUS PROCESSES ALIGNED WITH MIDLINE OF VERTEBRAL BODIES ILIAC WINGS SYMMETRICAL RIGHT HEMIDIAPHRAGM INCLUDED

FREE AIR

CORRECT

RT SIDE FARTHER FROM IR

PEDIATRIC ABDOMEN

CORRECT

NO DIAPHRAGM/FINGERS

R SIDE ROTATION

UPPER BODY TILTED TO R

DECUBITUS ABDOMEN/PEDI

CORRECT

ROTATED TO L SIDE

DIAPHRAGM NOT INCLUDE