Can graphic tablets facilitate expedited and more accurate volume measurements?

Year 2024, Volume: 41 Issue: 2, 233 - 238, 19.05.2024

Mert Nahir , Bünyamin Şahin

Abstract

Volume measurements of organs and structures are crucial for medical assessments and have traditionally been performed using computers, with a recent interest in tablets with digital pens. This study aims to evaluate the reliability of the computer mouse and graphic tablet in organ volume measurements based on the Cavalieri Principle. It will compare the advantages and disadvantages of each device, focusing on consistency and measurement duration. The study analyzed a dataset comprising 22 abdominal CT images from females and 21 from males, sourced from the Department of Radiology. Spleen and kidney volumes were quantified using Image J software and the Cavalieri Principle, utilizing both a computer equipped with a mouse and a graphic tablet with a drawing pen. The results revealed that computer mouse and graphic tablet measurements showed similar organ volumes, with average kidney volumes of 181.53 ±51.72 cm³ and 179.34 ±51.37 cm³, respectively, and spleen volumes of 211.03 ±78.47 cm³ and 205.93 ±77.52 cm³, respectively. The computer mouse required 283.55 ±56.03 seconds for the kidney and 386.74 ±106.66 seconds for the spleen, whereas the graphic tablet took only 128.79 ±33.32 seconds for the kidney and 141.91 ±40.18 seconds for the spleen, demonstrating a statistically significant reduction in measurement time (p < 0.001). The findings of this study suggest that graphic tablet provides a comparable level of reliability to the computer mouse for organ volume measurements using the Cavalieri Principle. Additionally, the tablet offers the significant benefit of faster measurement times.

Keywords

Cavalieri Principle, Graphical Tablet, Kidney, Spleen, Volume

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