Principles of Imaging

Question 0

bone tries to form new bone to make up for the destruction

Answer 0

Involucrum (vs Sequestrum w/c is more white)

Question 1

abnormal displacement of articulating surfaces such that the surfaces are not in contact (total disarticulation)

Answer 1

Dislocation (Vs sublaxation which is incomplete diarticulation)

Question 2

Appearance of Cervical spine during bacterial or Tuberculous infection in XR

Answer 2

Squarish Vertebral bodies
Above the abnormal wedge-shaped vertebra is where the infection is
appear whiter

Question 3

Most affected vertebrae in Bacterial TB

Answer 3

t11 and t12

Question 4

Bone and joint involvement

Csused by trauma or aging

Answer 4

Arthritides

Question 5

Bone formations from traction effects at the sites of capsule attachments

Answer 5

Osteopjhyte formation seen in OA or Degenerative Joint Disease

Question 6

Requirement for diagnosis of OA

Answer 6

Joint space not maintaned

Question 7

5 Radiographic changes in OA

Answer 7

1. ASsymetric Joint Space Narrowing
2. Subchondral Sclerosis
3. Osteophyte Formation
   4 Subchondral cyst formation
   5 Intercondylar Eminence

Question 8

Differentiate DJD from RA

Answer 8

RA = Bilateral, symmetrical in the non-weight-bearing joints

Question 9

EArly radiologic findings in Sclerosis

Answer 9

PEriarticular Osteoporosos
-Hypertvasculization
-REsorption og bone calcium deposits
Fusiform tissue Swelling

Question 10

Late Radiologic findings in sclerosis

Answer 10

Extensive cartilage destruction, Bone eriosions and ankylosis

Question 11

Modt common Primary bone tumor

Answer 11

odteocytome/ -sarcoma, Multiple myeloma

Question 12

XR: Elderyly pt presents with Big mass on Pelvis, CAnnot walk, primary Differential

Answer 12

Chondrosarcoma, If young,think osteosarcoma

Question 13

Sunburst appearance is a pathognomic sign of?

Answer 13

OSTEOSARCOMA, but not all will present with sunburst appearance
Suburst appearance happens when the tumor is growing too fast and bone comepensation cannto catch up resulting in abnormal pattern of growth (Scattered Bone Formation)

Question 14

Most common site of osteosarcoma

Answer 14

Knee joint
1. Distal femur
2 Proximal tibia
3 proximal humerus

Question 15

Popcorn like appearance

Answer 15

Chondrosarcoma

Question 16

Bone lucencies in XR with blood dyscracia

Answer 16

Multiple Myeloma

Question 17

Common indications for ultrasound

Answer 17

/trauma, Overuse syndromes, Soft tissue masses, Infections/Effusions

Question 18

Painful condition affecting tendon on the radial aspect of the wrist

Answer 18

De Quervain’s TEnosynovitis

Question 19

Black Fluid in UTZ and White solid lines in UTZ

Answer 19

Ganglion Cyst, Lipoma

Question 20

Modality to use for Hairline Fracture

Answer 20

CT scan

Question 21

Painful spine area that moves forward or backward from the expected line, pushing/pulling the nerves as well

Answer 21

Listhesis

Question 22

Mgt for Osteosarcoma

Answer 22

Disarticulate up to the next higher joint
Alwaysa go for lim salvaging
Limb salvage, Chemo, radio

Question 23

moda for ruling out Ligamentous Injury

Answer 23

MRI

Question 24

specaial pracution for renal and pregnant patients

Answer 24

MRI

Question 25

imaging modality of choice for soft tissues, joints and bone marrow

Answer 25

Magnetic REsonance Imaging

Question 26

for cortical Bone evaluation

Answer 26

CT scan

Question 27

fastest modality

Answer 27

CT scan (needs only 2 secs) compared to MRI 30 mins

Question 28

modality for bulging disks (disk spaces)

Answer 28

spinal MRI

Question 29

Honeycomb pattern in MRI

Answer 29

Probably Giant CEll tumor, if there is fluid, then it is GCT

Question 30

what are hot spots in Skeletal Scintigraphy

Answer 30

Blacker AReas which represent high metabolic activity

Question 31

Modality that detects glucose

Answer 31

Positive Emission Tomographic Scan

Question 32

Post Treatment diagnostic Tool

Answer 32

PET-CT

Question 33

Tracer isotope used in Positive Emission Tomographic Scan

Answer 33

F - 18