MRSC5013 - WEEK 7

Label the following MRI of the knee

a

b

Anterior cruciate

Posterior cruciate

Common Sequence Planning of the Knee Joint in MRI

Groups:

(a) Axial Planning

,

(b) Coronal Planning

,

(c) Sagittal Oblique Planning

• Parallel to posterior femoral condylar line

• Parallel to tibial plateau

• Includes patellar ligament insertion inferiorly and patella superiorly

• Parallel to lateral condyle (slices parallel to ACL)

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

• Include all of both condyles

Label the Cross section of the thigh

a

b

c

d

e

f

g

h

i

j

Sartorius

Vastus Medialis

Quadriceps tendon

Gracilis

Vastus Lateralis

Semimembranosus

Semitendinosus

Biceps Femoris

Sciatic Nerve

Articularis Genu

Label the missing labels

a

b

c

Gerdy tubercle

medial head of gastrocnemius

Popliteus

Lateral Retinaculum of patella

common peroneal

Vastus Medialis

Semitendinosus Tendon

Tibial Artery

Tibialis Anterior

Label the missing

a

b

c

Tibial nerve artery & vein

Sartorius

Lateral articular facet of patella

Lateral head of gastrocnemius

Semimembranosus

Vastus Medialis

Medial articular facet of patella

Common peroneal Nerve

Gracilis tendon

Semitendinosus tendon

Label the missing labels

a

b

c

d

e

Anterior cruciate

Sartorius

Iliotibial band

Medial collateral lig.

Popliteus tendon

Lateral head of gastroc.

Posterior cruciate

Vastus medialis

Lateral collateral lig.

Fibular collateral lig.

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)