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Image Acquisition Method for the Sonographic Assessment of the Inferior Vena Cava

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Variations in internal iliac veins detected using multidetector computed tomography.

S Morita¹, N Saito, N Mitsuhashi

¹Department of Radiology, Saiseikai Kurihashi Hospital, Kouemon, Kurihashi-Machi, Kitakatsushika-Gun, Saitama, Japan. i@imodey.com

Acta Radiologica (Stockholm, Sweden : 1987)

|October 27, 2007

Summary

Anatomical variations of the internal iliac veins (IIV) are common and can complicate surgery. Multidetector computed tomography (MDCT) identified six types of IIV anomalies, highlighting their significant prevalence.

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Area of Science:

Vascular anatomy
Radiology
Surgical anatomy

Background:

Anatomical variations of internal iliac veins (IIV) are frequent.
These variations can lead to complications during surgical procedures.
The full spectrum of IIV variations is not widely understood.

Purpose of the Study:

To classify the types of anatomical variations of the internal iliac veins (IIV).
To determine the prevalence rates of these IIV variations.
To utilize multidetector computed tomography (MDCT) for detailed imaging.

Main Methods:

Retrospective analysis of contrast-enhanced MDCT scans from 63 patients.
Interpretation and classification of IIV variations by two radiologists.
Calculation of prevalence rates with 95% confidence intervals (CIs).

Main Results:

Six types of IIV variations were identified.
Normal IIV anatomy was observed in 69.8% of cases.
Variations included anomalous drainage patterns, with prevalence rates ranging from 1.6% to 11.1%.

Conclusions:

Multidetector computed tomography (MDCT) effectively visualizes six distinct types of internal iliac vein (IIV) variations.
The prevalence of internal iliac vein (IIV) anomalies is substantial and warrants clinical attention.