Final Review Flashcards
QA exposure time
+/- 5% accuracy
Collimator light field and actual xray field
Within 2% SID
kV meter
+/- 4 kV
Reproducibility
+/- 5%
Focal spot size, linearity, reproducibility, filtration, kV, exposure time
Test annually
Collimator
Semiannually
CR for AP L5-S1
30-35 degrees
CR L1-L4
Perpendicular
AP shoulder extrrnal rotation
Epicondyles parallel
AP shoulder internal rotation
Epicondyles perpendicular
Humerus, elbow, and forearm lateral
ERCP Cm injected in
CBD
Cervical oblique position demonstrate
Intervertebral foramina
Cervical lateral position
Apophyseal joint
Intervertebral disc spaces
Higher SNR produces
Higher quality image
Barium in fundus
Px supine
Ap projection, LPO
Size distortion
Magnification
Improper alignment of tube, part and IR
Shape distortion (foreshortening, elongation)
High frequency generators
Small size, nearly constant voltage potential, decrease px dose
Tissue is most sensitive to radiation when it is in
Oxygenated condition
6 inch air gap (OID)
Increases image contrast (much SC will not reach the IR)
Duodeno-jejunal flexure
Angle of treitz
PSP storage plate
- Protective layer
- Phospor Layer - barium fluorohalide layer
- Reflective Layer -ditect emiited light to CR reader
- Base
- Antistatic Layer
- Lead Foil - absorb backscatter
Lateral lumbar
Intervertebral disk
Intervertebral foramina
Spinous process
Oblique Lumbar
Apophyseal articulation
Posterior oblique - close to IR
Anterior oblique - farthest
Reproducibility
Repeated exposure in a given technique - provide consistent intensity
Linearity
Mas values, diff ma station with app exposure time adjustments - provide consistent intensity
Line focus principle
Actual focal spot larger than effective focal spot
LAO
Gb moved away form spine
Aspirin
Analgesic
Heparin
Anticoagulant
Fuoroscope table top intensity
Not exceed 10 R/min
SSD fixed fluoroscopic equipment
Mobile fluoroscopic
Atleast 15 in
Atleast 12 in
KV will decrease to 15%, density will
Cut in half
Artifact in using geid for DR imaging
Aliasing or grid effect
Degree of lateral motion
L and R bending
Degree of AP motion
Lateral flexion, extension
Blow out fracture
Fracture of the inferior orbital wall
Olecranon process best demonstrated in
Lateral position , also acute flexion position
Internal oblique elbow
Coronoid process
External oblique elbow
Radial head free of superimposition
Decrease exposure factor to
Emphysema
Pneumothorax
Multiple myeloma
Parrial transfer of incident photon energy
Compton scattering
SID and magnification
Inversely proportional
Administered parenterally
By any route other than orally
Bony growth at dorsal surface of 3rd MCJ
Carpal boss
CR for knee: 19-24 cm bet ASIS and table (Sthenic Px)
CR perpendicular
Less than 19cm (Asthenic)
CR - 5degrees caudad
Greater than 24cm (hypersthenic)
CR 5 degreas cephalad
When you controls arterial tension in sphymomanometer
Brachial artery is temporarily collapsed
Left upper quadrant
Fundus of stomach
Unlawful laying of hands on px
Battery
Threat or touching or latong hands
Assault
Px states that he or she no longer want to continue procedure and is ignored
Restraining devices are improperly used
False imprisonment
Change non grid to grid exposure
No grid - 1 x original mAs
5: 1 grid - 2
6: 1 - 3
8: 1 - 4
12: 1 - 5
16: 1 - 6
mAs1 = grid factor 1
______. _____________
mAs2. grid factor 2