MRSC5013 - WEEK 7

Label the following MRI of the knee

a

b

Posterior cruciate

Anterior cruciate

Common Sequence Planning of the Knee Joint in MRI

Groups:

(a) Axial Planning

,

(b) Coronal Planning

,

(c) Sagittal Oblique Planning

• Parallel to lateral condyle (slices parallel to ACL)

• Include patella and several slices posterior to condyles to include popliteal artery

• Parallel to tibial plateau

• Includes patellar ligament insertion inferiorly and patella superiorly

• Include all of both condyles

• Parallel to posterior femoral condylar line

Label the Cross section of the thigh

a

b

c

d

e

f

g

h

i

j

Gracilis

Sartorius

Semimembranosus

Quadriceps tendon

Sciatic Nerve

Biceps Femoris

Vastus Medialis

Articularis Genu

Semitendinosus

Vastus Lateralis

Label the missing labels

a

b

c

Gerdy tubercle

medial head of gastrocnemius

Tibial Artery

Popliteus

Tibialis Anterior

Lateral Retinaculum of patella

Semitendinosus Tendon

common peroneal

Vastus Medialis

Label the missing

a

b

c

Lateral articular facet of patella

Lateral head of gastrocnemius

Semitendinosus tendon

Sartorius

Tibial nerve artery & vein

Vastus Medialis

Medial articular facet of patella

Gracilis tendon

Semimembranosus

Common peroneal Nerve

Label the missing labels

a

b

c

d

e

Sartorius

Fibular collateral lig.

Lateral collateral lig.

Lateral head of gastroc.

Medial collateral lig.

Posterior cruciate

Popliteus tendon

Vastus medialis

Anterior cruciate

Iliotibial band

MR Arthrography turns a non-invasive procedure into a semi-invasive one

• True

• False

Which sequence is essential in knee MR arthrography to evaluate contrast distribution and labral pathology?

• T1-W FS

• T2-W

• DWI

• SWI

Answer explanation

1. A) T1-W FS:

2. Fat suppression enhances gadolinium contrast visibility, critical for labral tears, cartilage defects, and synovial pathology.

4. B) T2-W:

   Plausible but wrong. Non-fat-sat T2 obscures contrast-agent boundaries (fat and fluid both appear bright).

6. C) DWI:

   • Irrelevant. Used for abscesses or tumors, not routine arthrography.

7. D) SWI:

   • Misleading. Detects microbleeds (e.g., in brain MRI), not joint structures.

Pathology?

Pathology?

(Input the name of the bone first)