During an interscalene block, which muscle lies medial to the brachial plexus roots?

Which probe orientation best identifies the costoclavicular space for a brachial plexus block?

The most reliable sono-landmark for identifying the femoral nerve is:

In a sciatic block at popliteal fossa, the “figure-of-8” configuration refers to:

Which ultrasound artifact can falsely obscure a deep nerve near bone?

In the transversus abdominis plane (TAP) block, which statement is true?

For an erector spinae plane block, injectate spreads:

The sono-anatomy of the paravertebral space includes:

In the subgluteal sciatic block, the sciatic nerve lies:

Which block provides anesthesia to both femoral and lateral femoral cutaneous nerves?

During suprapatellar scan, which structure confirms the plane for adductor canal block?

In an ultrasound image of the intercostal space, which layer directly overlies the pleura?

Which approach offers the highest success in visualizing the lumbar plexus?

In the scan at the femoral crease, a hyperechoic triangular structure lies lateral to the femoral artery under the fascia iliaca. This is the target for which block?

In an ultrasound view of the forearm, the ulnar nerve is seen medial to the ulnar artery. Which block is being shown?

The ultrasound shows the femoral artery beneath the sartorius, and a smaller hyperechoic nerve lateral to it in the adductor canal region. Which nerve is this?

On a coronal ultrasound scan over the supraspinous fossa, a hyperechoic nerve lies adjacent to the suprascapular notch and under the fascial plane. Which block is this?

In the abdominal wall ultrasound scan, the local anaesthetic is deposited between which two muscle layers in a classic TAP block?

The image shows the bifurcation of the sciatic nerve into tibial and common peroneal branches in the popliteal fossa. Which block is this?

The ultrasound shows the fascia iliaca plane with a large space lateral to the femoral nerve where local anaesthetic is being deposited. Which block is this?

In a gluteal-region scan, a hyperechoic oval nerve lies deep to gluteus maximus and superficial to piriformis. Which nerve block is this?

The ultrasound shows a small hyperechoic structure beneath the inguinal ligament and lateral to the sartorius at the anterior thigh. Which nerve block is depicted?

On an anterior thigh ultrasound the nerve is seen between the adductor longus and adductor brevis muscles, medial to the femoral vessels. Which nerve is this?

A transverse neck ultrasound shows three round hypoechoic nodules between the anterior and middle scalene muscles — the "traffic light" pattern. Which block is this?