scholarly journals The Clinical Impact of Accurate Cystine Calculi Characterization Using Dual-Energy Computed Tomography

2015 ◽  
Vol 2015 ◽  
pp. 1-5
Author(s):  
William E. Haley ◽  
El-Sayed H. Ibrahim ◽  
Mingliang Qu ◽  
Joseph G. Cernigliaro ◽  
David S. Goldfarb ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Imaging Modality ◽  
Dual Energy ◽  
Clinical Impact ◽  
Clinical Implications ◽  
Stone Composition ◽  
Dual Energy Computed Tomography ◽  
Uric Acid Stones ◽  
Cystine Stones ◽  
Composition Standard

Dual-energy computed tomography (DECT) has recently been suggested as the imaging modality of choice for kidney stones due to its ability to provide information on stone composition. Standard postprocessing of the dual-energy images accurately identifies uric acid stones, but not other types. Cystine stones can be identified from DECT images when analyzed with advanced postprocessing. This case report describes clinical implications of accurate diagnosis of cystine stones using DECT.

scholarly journals Three-Dimensional Dual-Energy Computed Tomography for Enhancing Stone/Stent Contrasting and Stone Visualization in Urolithiasis

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
El-Sayed H. Ibrahim ◽  
William E. Haley ◽  
Maria A. Jepperson ◽  
David D. Thiel ◽  
Michael J. Wehle ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Imaging Modality ◽  
Three Dimensional ◽  
Urinary Calculi ◽  
Dual Energy ◽  
Surgical Removal ◽  
Residual Stone ◽  
Stone Composition ◽  
Dual Energy Computed Tomography ◽  
Clinically Significant

The use of dual-energy computed tomography (DECT) for evaluating urinary calculi has been appreciated due to the modality’s capability of differentiating between uric acid (UA) and non-UA stones, which are color coded based on a postprocessing algorithm. No other imaging modality or laboratory test is able to identify the stone composition without first attaining the stone material. Knowledge of the stone composition is clinically significant since UA calculi may be treated medically whereas non-UA calculi may require surgical removal. Regardless of the stone type, ureteral stents are often placed to prevent or treat obstruction. Recent work has demonstrated that commonly used stents are also colored based on their dual energy characteristics and may thereby either improve or obscure the identification of adjacent calculi. Herein, we report the case of a 65-year-old man who underwent percutaneous nephrolithotomy of a large staghorn stone with subsequent significant residual stone fragments noted on a follow-up scan. By using three-dimensional DECT and taking advantage of color contrasting, the stone composition, burden, shape, and boundary were clearly depicted apart from the adjacent stent, resulting in successful medical treatment and obviating the need for further surgical intervention.

scholarly journals Dual-energy computed tomography for the differentiation of uric acid stones: ex vivo performance evaluation

2008 ◽  
Vol 36 (3-4) ◽  
pp. 133-138 ◽  
Author(s):  
Paul Stolzmann ◽  
Hans Scheffel ◽  
Katharina Rentsch ◽  
Thomas Schertler ◽  
Thomas Frauenfelder ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Uric Acid ◽  
Performance Evaluation ◽  
Ex Vivo ◽  
Dual Energy ◽  
Dual Energy Computed Tomography ◽  
Uric Acid Stones

Determination of Renal Stone Composition in Phantom and Patients Using Single-Source Dual-Energy Computed Tomography

2013 ◽  
Vol 37 (1) ◽  
pp. 37-45 ◽  
Author(s):  
Naveen M. Kulkarni ◽  
Brian H. Eisner ◽  
Daniella F. Pinho ◽  
Mukta C. Joshi ◽  
Avinash R. Kambadakone ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Renal Stone ◽  
Dual Energy ◽  
Single Source ◽  
Stone Composition ◽  
Dual Energy Computed Tomography

PD36-01 THE QUALITATIVE DIAGNOSIS FOR THE URINARY STONE COMPOSITION USING DUAL ENERGY COMPUTED TOMOGRAPHY

2014 ◽  
Vol 191 (4S) ◽  
Author(s):  
Satoshi Yamaguchi ◽  
Hiroki Inoue ◽  
Masayuki Tokumitsu ◽  
Noriaki Masui ◽  
Shigeo Kaneko ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Urinary Stone ◽  
Dual Energy ◽  
Stone Composition ◽  
Dual Energy Computed Tomography
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