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Posterior Anterior External Oblique Muscle Internal Oblique Muscle Transverse Abdominis Muscle Pararenal Fat Peritoneum Quadratus Lumborum Muscle Transversalis Fascia

White Arrow: Needle Path Blue Area: Local Anesthetic Posterior Anterior Latissimus Dorsi External Oblique Quadratus Lumborum Internal Oblique Erector Spinae Transverse Process Psoas Peritoneum Pararenal Fat

White Arrow: Needle Path Blue Area: Local Anesthetic Posterior Anterior External Oblique Muscle Internal Oblique Muscle Transverse Abdominis Muscle Pararenal Fat Peritoneum Quadratus Lumborum Muscle Transversalis Fascia

Costal Margin Transducer Position – Slide Transducer Posterior Iliac Crest

White Arrow: Needle Path Blue Area: Local Anesthetic Posterior Anterior Latissimus Dorsi External Oblique Quadratus Lumborum Internal Oblique Erector Spinae Transverse Process Psoas Peritoneum Pararenal Fat

Right Subclavian Vein Axillary Vein Brachial Vein Cephalic Vein Basilic Vein Median Vein of the Elbow Median Vein of the Forearm Cephalic Vein Radial Vein Basilic Vein Ulnar Vein Deep venous arch of the palm Superficial venous arch of the palm Digital veins

Inferior Vena Cava (IVC) Aorta Spine Shadow