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Technical Note

Implementation of a Technique Based on Hounsfield Units and Hounsfield Density to Determine Kidney Stone Composition

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Department of Radiology, Hospital Regional de Alta Especialidad de la Peninsula de Yucatán, Calle 7 por 20 y 22, Fraccionamiento Altabrisa, Merida 97130, Mexico
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Research Unit, Hospital Regional de Alta Especialidad de la Peninsula de Yucatán, Calle 7 por 20 y 22, Fraccionamiento Altabrisa, Merida 97130, Mexico
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Department of Urology, Hospital Regional de Alta Especialidad de la Peninsula de Yucatán, Calle 7 por 20 y 22, Fraccionamiento Altabrisa, Merida 97130, Mexico
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Vicedirectorate of Research and Learning, Hospital Regional de Alta Especialidad de la Peninsula de Yucatán, Calle 7 por 20 y 22, Fraccionamiento Altabrisa, Merida 97130, Mexico
*
Author to whom correspondence should be addressed.
Academic Editor: Li Yueh Hsu
Tomography 2021, 7(4), 606-613; https://doi.org/10.3390/tomography7040051
Received: 29 August 2021 / Revised: 21 September 2021 / Accepted: 29 September 2021 / Published: 20 October 2021
Hounsfield units (HU) are a measure of radiodensity, related to the density of a tissue and the composition of kidney stones. Hounsfield density is what is related to the composition of kidney stones. In the standard acquisition method, these measures are arbitrary and dependent on the operator. This study describes the implementation of a technique based on the HU and Hounsfield density to predict the stone compositions of patients with nephrolithiasis. By conventional percutaneous nephrolithotomy, thirty kidney stone samples corresponding to the cortex, middle, and nucleus were obtained. The HU were obtained by CT scanning with a systematic grid. Hounsfield density was calculated as the HU value divided by the stone’s greatest diameter (HU/mm). With that method and after analyzing the samples by IR-spectroscopy, anhydrous uric acid and ammonium magnesium phosphate were identified as the compounds of kidney stones. Additionally, anhydrous uric acid, magnesium ammonium phosphate, and calcium oxalate monohydrate were identified via Hounsfield density calculation. The study identified HU ranges for stone compounds using a systematic technique that avoids bias in its analysis. In addition, this work could contribute to the timely diagnosis and development of personalized therapies for patients with this pathology. View Full-Text
Keywords: Hounsfield units; Hounsfield density; renal stone; composition stone; CT scan Hounsfield units; Hounsfield density; renal stone; composition stone; CT scan
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MDPI and ACS Style

Rodríguez-Plata, I.T.; Medina-Escobedo, M.; Basulto-Martínez, M.; Avila-Nava, A.; Gutiérrez-Solis, A.L.; Méndez-Domínguez, N.; Lugo, R. Implementation of a Technique Based on Hounsfield Units and Hounsfield Density to Determine Kidney Stone Composition. Tomography 2021, 7, 606-613. https://doi.org/10.3390/tomography7040051

AMA Style

Rodríguez-Plata IT, Medina-Escobedo M, Basulto-Martínez M, Avila-Nava A, Gutiérrez-Solis AL, Méndez-Domínguez N, Lugo R. Implementation of a Technique Based on Hounsfield Units and Hounsfield Density to Determine Kidney Stone Composition. Tomography. 2021; 7(4):606-613. https://doi.org/10.3390/tomography7040051

Chicago/Turabian Style

Rodríguez-Plata, Irvin T., Martha Medina-Escobedo, Mario Basulto-Martínez, Azalia Avila-Nava, Ana L. Gutiérrez-Solis, Nina Méndez-Domínguez, and Roberto Lugo. 2021. "Implementation of a Technique Based on Hounsfield Units and Hounsfield Density to Determine Kidney Stone Composition" Tomography 7, no. 4: 606-613. https://doi.org/10.3390/tomography7040051

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