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Published byRobert Evans Modified over 8 years ago
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MOBILE RADIOGRAPHY MERRILL’S VOL. 3 CH. 28
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POWER SUPPLIES CAPACITOR DISCHARGE UNITS BATTERY POWERED UNITS
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POWER DRIVE DRIVE MOTOR, BATTERY POWERED DEADMAN-TYPE DRIVE SWITCH EXTREME CARE MUST BE TAKEN WHEN DRIVING !
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KVP BATTERY-POWERED UNIT HIGHER AVERAGE PHOTON ENERGY CAPACITOR DISCHARGE UNIT VOLTAGE DROPS DURING EXPOSURE
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MAS MOST MOBILE UNITS NOT CAPABLE OF HIGH MAS VALUES USED IN STATIONARY UNITS KVP CAN BE MANIPULATED TO OBTAIN SUFFICIENT DENSITY
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RADIATION SAFETY S HIELDING T IME D ISTANCE
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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
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MILD CUT OFF CR3” OFF CENTER
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MODERATE CUTOFF CR 5”OFF CENTER
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CHEST RADIOGRAPHY
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QUICK TIPS POSITION CR AND SET TECHNIQUE PRIOR TO POSITIONING PATIENT USE SHORT EXPOSURE TIMES TO REDUCE MOTION
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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
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CORRECT
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PATIENT CHALLENGES KYPHOSIS SEMI-UPRIGHT/SUPINE/CR 5-10DEGREES CEPH. UNCONSCIOUS/VENTILATED PATIENT SLIDE CASSETTE UNDER BED SHEET/WATCH RESPIRATIONS
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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
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CXR/SCOLIOSIS
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EXPIRATION
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ARMS IN FOV
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LORDOTIC
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CAUDAL ANGLE
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PEDIATRIC CHEST
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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
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NEONATE CORRECT
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NOT FULL EXPIRATION
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ROTATION TO L SIDE
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LORDOTIC/POSTERIOR RIBS PROJECTED UPWARD/CR TOO LOW
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CHIN IN LUNG FIELD
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EXPIRATION/CR CEPHALIC ANGLE
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CR TOO CAUDAL
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DECUBITUS CXR
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POSITIONING TIPS AP PROJECTION IS EASIER FOR POSITIONING BEND KNEES & SUPPORT W/PILLOW TO PREVENT FORWARD ROTATION
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EVALUATION CRITERIA ARMS, MANDIBLE, & LATERAL BORDERS OF SCAPULAE OUTSIDE LUNG FIELD CLAVICLES PROJECTED UPWARD MANUBRIUM SUPERIMPOSED ON T4 9-10 POSTERIOR RIBS ABOVE DIAPHRAGM SUPPORT PAD NOT IN LUNG FIELD
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CORRECT
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INCORRECT/LFT SIDE CLOSER TO IR/ARM AT 90 DEGREE ANGLE
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MANUBRIUM OVER T5/LEANING FORWARD
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PEDIATRIC DECUBITUS CXR
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CORRECT
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ROTATED TOWARDS L
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R SIDE ROTATION& CHIN
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ARM INLUNG/EXPIRATION
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MOBILE ABDOMEN
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PATIENT CHALLENGES PATIENT SIZE MOTION VOLUNTARY INVOLUNTARY LINES/TUBING
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MOTION
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INVOLUNTARY MOTION
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DECREASE MA FOR PATHOLOGY
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SCOLIOSIS VS ROTATION ROTATION SPINOUS PROCESS LOCATION OFF VERTEBRAL COLUMN APPEARS STRAIGHT SCOLIOSIS SPINOUS PROCESSES STRAIGHTEN OUT VERTEBRAL COLUMN DEMONSTRATES LATERAL DEVIATION
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ROTATION
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SCOLIOSIS
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DECUBITUS ABDOMEN
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EVALUATION CRITERIA UNIFORM DENSITY ACROSS ABDOMEN SPINOUS PROCESSES ALIGNED WITH MIDLINE OF VERTEBRAL BODIES ILIAC WINGS SYMMETRICAL RIGHT HEMIDIAPHRAGM INCLUDED
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FREE AIR
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CORRECT
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RT SIDE FARTHER FROM IR
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PEDIATRIC ABDOMEN
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CORRECT
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NO DIAPHRAGM/FINGERS
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R SIDE ROTATION
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UPPER BODY TILTED TO R
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DECUBITUS ABDOMEN/PEDI
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CORRECT
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ROTATED TO L SIDE
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DIAPHRAGM NOT INCLUDE
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