Abdominopelvic, Peritoneal, and Retroperitoneal Imaging Anatomy — WACS Viva & Clinical Scenarios (Radiological Anatomy and Normal Imaging Variants)

Exam-style abdominopelvic, peritoneal, and retroperitoneal imaging anatomy viva scenarios with examiner probes and model answers for Radiology candidates.

Scenarios covered

• SCENARIO 1: Multi-Detector CT Segmental Liver and Biliary Anatomy: A contrast-enhanced axial and coronal CT series of the upper abdomen is displayed. Identify Couinaud segments I through VIII. Outline the vascular and anatomical planes used to delineate functional lobes and segments, and state the relational anatomy of the portal triad at the porta hepatis.
• SCENARIO 2: Cross-Sectional Peritoneal Spaces and Fluid Dynamics: On axial contrast-enhanced CT images through the abdomen and pelvis, delineate the boundaries of the greater and lesser peritoneal sacs (omental bursa), the foramen of Winslow, the subphrenic spaces, Morison pouch (hepatorenal recess), and the paracolic gutters. Explain the anatomical pathways governing intraperitoneal fluid and disease dissemination.
• SCENARIO 3: Retroperitoneal Compartmental and Fascial Architecture: On high-resolution axial CT scans at the level of the renal hilum and lower lumbar spine, identify the anterior pararenal space, perirenal space, and posterior pararenal space. Detail the origins, course, and fusions of the anterior renal fascia of Gerota, posterior renal fascia of Zuckerkandl, and lateroconal fascia.
• SCENARIO 4: Pelvic MRI Zonal Anatomy and Pelvic Floor Musculature: On high-resolution T2-weighted axial, coronal, and sagittal pelvic MRI scans of male and female subjects, demonstrate the zonal anatomy of the prostate (peripheral, transition, central, and anterior fibromuscular zones) and the uterine mural stratification (junctional zone, outer myometrium, and endometrium). Delineate the components of the levator ani muscle complex.
• SCENARIO 5: Abdominal Visceral Vascular and Mesenteric Root Anatomy: Using maximum intensity projection (MIP) CT angiography and multiplanar reformations, demonstrate the branching patterns of the celiac trunk, superior mesenteric artery (SMA), inferior mesenteric artery (IMA), and portal venous system. Describe the relationship of the SMA and superior mesenteric vein (SMV) to the uncinate process and neck of the pancreas.