The Peritoneum: What Nuclear Radiologists Need to Know.

Area of Science:

• Anatomy and Imaging
• Nuclear Medicine
• Pathology

Background:

• The peritoneum is the human body's largest serous membrane, vital for organ movement, fluid exchange, and immune response.
• It forms the peritoneal cavity, a complex space crucial for intra-abdominal organ function.
• The peritoneum is susceptible to various neoplastic, non-neoplastic, inflammatory, and infectious diseases.

Purpose of the Study:

• To review normal peritoneal anatomy and its role in physiological processes.
• To discuss diverse pathological conditions affecting the peritoneum.
• To highlight the utility of nuclear medicine and hybrid imaging in diagnosing and managing peritoneal diseases.

Main Methods:

• Review of nuclear medicine techniques including peritoneal scintigraphy and PET imaging.
• Discussion of hybrid imaging modalities (e.g., PET/CT, PET/MRI) for peritoneal assessment.
• Emphasis on the importance of understanding peritoneal anatomy for accurate interpretation.

Main Results:

• Nuclear medicine imaging can detect abnormal peritoneal communications and compartmentalization.
• Techniques aid in characterizing intraperitoneal fluid collections, distinguishing sterile from infected fluid.
• PET imaging is valuable for evaluating both neoplastic and non-neoplastic peritoneal pathologies.

Conclusions:

• Nuclear medicine and hybrid imaging are essential tools for diagnosing peritoneal diseases.
• Familiarity with peritoneal anatomy and pathology is critical for accurate interpretation of imaging findings.
• These imaging modalities aid in the detection, characterization, and follow-up of peritoneal conditions.