Evaluating long-term performance and quality control of the uMI 550 positron emission tomography- computed tomography (PET-CT) system: A comprehensive scientific analysis

IF 2.5 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Radiography Pub Date : 2025-03-20 DOI:10.1016/j.radi.2025.102920

N. El Houda Baghous , M. El Kafhali , M. Tahmasbi , E.M. Chakir , A. El Kessioui , A. Elkhatib , R. Sebihi

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引用次数: 0

Abstract

Introduction

Ensuring the long-term performance and reliability of positron emission tomography-computed tomography (PET-CT) systems is essential for accurate clinical diagnostics and treatment planning. This study provides a comprehensive analysis of the periodic quality control (QC) processes of the uMI 550 PET-CT system, focusing on key performance parameters such as standardized uptake value (SUV) accuracy, spatial alignment, and image uniformity.

Methods

Periodic semi-annual QC tests were conducted to evaluate the system's performance across multiple parameters. Key metrics included SUV measurements, spatial alignment across X, Y, and Z axes, and uniformity tests. Statistical analyses assessed variability and stability over time, including ANOVA, t-tests, and linear regression.

Results

The results demonstrated consistent SUV measurements within the reference range of 0.95–1.05, indicating robust quantitative accuracy. Spatial alignment was maintained within a tolerance of −1.5 mm to +1.5 mm, ensuring geometric integrity crucial for accurate image fusion in radiotherapy planning. Uniformity tests showed transverse and axial uniformity values remained within acceptable limits (0.00–0.05), ensuring high-quality imaging across the field of view. Statistical analyses confirmed no significant drift or variability across QC intervals, highlighting the system's reliability over time.

Conclusion

The uMI 550 PET-CT system demonstrated consistent performance across critical parameters, validating its suitability for a wide range of clinical applications. Regular QC testing plays a vital role in maintaining system accuracy and reliability.

Implications for practice

This study underscores the importance of routine quality control procedures in ensuring the long-term stability and reliability of PET-CT systems. The robust performance of the uMI 550 supports its use in oncology and other diagnostic fields, providing clinicians with confidence in treatment decisions.

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来源期刊

Radiography RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-

CiteScore

4.70

自引率

34.60%

发文量

169

审稿时长

63 days

期刊介绍： Radiography is an International, English language, peer-reviewed journal of diagnostic imaging and radiation therapy. Radiography is the official professional journal of the College of Radiographers and is published quarterly. Radiography aims to publish the highest quality material, both clinical and scientific, on all aspects of diagnostic imaging and radiation therapy and oncology.