Measurement of liver volume by emission computed tomography

Area of Science:

• Medical imaging
• Nuclear medicine
• Anatomy

Background:

• Accurate liver volume measurement is crucial for clinical assessments.
• Traditional methods may rely on geometric assumptions, limiting precision.
• Novel imaging techniques are needed for reliable liver volume quantification.

Purpose of the Study:

• To evaluate the utility of single-photon emission computed tomography (ECT) for determining liver volume.
• To assess the accuracy and reproducibility of ECT in measuring liver volume.
• To validate ECT-based liver volume measurements.

Main Methods:

• Liver volume was determined in 22 healthy volunteers using single-photon emission computed tomography (ECT).
• The technique's object contrast and ability to avoid geometric assumptions were analyzed.
• Reproducibility was assessed through duplicate measurements in 15 individuals.
• Volume measurements were validated using phantom studies.

Main Results:

• Single-photon emission computed tomography (ECT) provided excellent contrast for liver volume calculation.
• The method allowed for liver volume determination without geometric assumptions.
• Satisfactory reproducibility was achieved, with a root-mean-square error under 6% for duplicate measurements.
• Phantom validation confirmed the accuracy of the volume measurements.

Conclusions:

• Single-photon emission computed tomography (ECT) is a reliable and accurate method for determining liver volume.
• The technique offers high contrast and reproducibility, making it suitable for clinical applications.
• ECT provides a geometrically independent approach to liver volume assessment.