Article
Radiology, Nuclear Medicine & Medical Imaging
Bo Mussmann, Maryann Hardy, Helene Jung, Ming Ding, Palle J. Osther, Ole Graumann
Summary: The study found that dual energy computed tomography can accurately identify and classify renal stones, providing support for clinical decision-making. The results suggest that CT systems using fast kV switching have the potential to be a low-dose diagnostic tool for precise localization and classification of renal stones in vivo.
ACADEMIC RADIOLOGY
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Ali Pourvaziri, Anushri Parakh, Jinjin Cao, Joseph Locascio, Brian Eisner, Dushyant Sahani, Avinash Kambadakone
Summary: The study compared the performance of four DECT technologies in determining renal stone composition, showing that all DECT technologies could accurately determine stone composition at standard- and lowdose acquisitions, with performance varying based on scanner parameters, DECT technique, and stone type.
Article
Radiology, Nuclear Medicine & Medical Imaging
Ali Pourvaziri, Amirkasra Mojtahed, Peter F. Hahn, Michael S. Gee, Avinash Kambadakone, Dushyant Sahani
Summary: This study aims to assess the impact of dual-energy CT (DECT) in renal lesion assessment and compare it with single-energy CT (SECT) and contrast-enhanced MRI. The results show that DECT has similar diagnostic accuracy to MRI in assessing renal lesions and reduces the need for additional and follow-up imaging.
EUROPEAN RADIOLOGY
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Jinjin Cao, Simon Lennartz, Nisanard Pisuchpen, Nayla Mroueh, Sasiprang Kongboonvijit, Anushri Parakh, Dushyant Sahani, Avinash Kambadakone
Summary: Using virtual unenhanced (VUE) images as a replacement for true unenhanced (TUE) images in characterizing renal lesions by dual-energy CT (DECT) may lead to false-positive findings of enhancement in simple and hyperattenuating cysts, while reliably detecting enhancement in solid masses.
AMERICAN JOURNAL OF ROENTGENOLOGY
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Jennifer M. Xiao, Daniel S. Hippe, Mladen Zecevic, David A. Zamora, Larry M. Cai, Giuseppe Toia, Adam G. Chandler, Manjiri K. Dighe, Ryan B. O'Malley, William P. Shuman, Carolyn L. Wang, Achille Mileto
Summary: VUE images obtained from a DECT multimaterial decomposition algorithm were consistent with TUE images in renal mass classification, but exhibited lower diagnostic performance for urinary stone detection, particularly lacking sensitivity for stones with a diameter of 3mm or less.
Editorial Material
Medicine, General & Internal
Velio Ascenti, Francesco M. Arico, Renato Trimarchi, Giuseppe Cicero, Antonio Ieni, Marta Rossanese, Giorgio Ascenti
Summary: A 56-year-old man with a previous right nephrectomy for multiple papillary renal cell carcinomas (pRCC) underwent a follow-up CT scan. Using a dual-layer dual-energy CT (dlDECT), we demonstrated the presence of a small amount of fat in a 2.5 cm pRCC that mimicked the diagnosis of angiomyolipoma (AML). Histological examination demonstrated the absence of macroscopic intratumoral adipose tissue, showing a fair amount of enlarged foam macrophages loaded with intracytoplasmic lipids. The presence of fat density in an RCC is extremely rare and this is the first description of fat tissue in a small RCC using dlDECT due to the presence of tumor-associated foam macrophages. Radiologists should be aware of this possibility in characterizing renal masses with DECT, especially in cases of aggressive masses or a positive history of RCC.
Article
Urology & Nephrology
Alex Nourian, Eric Ghiraldi, Justin I. Friedlander
Summary: Dual-energy CT (DECT) is superior to conventional CT in diagnosing nephrolithiasis, accurately detecting uric acid stones and reducing radiation dose with low-dose CT scans. DECT remains effective for patients with large body habitus. Further studies on DECT's effectiveness in guiding management of patients with nephrolithiasis can promote its widespread use.
CURRENT UROLOGY REPORTS
(2021)
Review
Radiology, Nuclear Medicine & Medical Imaging
Shanigarn Thiravit, Christina Brunnquell, Larry M. Cai, Mena Flemon, Achille Mileto
Summary: DECT has significant advantages in renal mass evaluation, helping to identify incidentally discovered masses and provide additional information. Virtual unenhanced and iodine density DECT images should be interpreted side-by-side to avoid misinterpretation.
EUROPEAN RADIOLOGY
(2021)
Article
Urology & Nephrology
Xian Li, Lu-Ping Wang, Li-Li Ou, Xiao-Yan Huang, Qing-Si Zeng, Wen-Qi Wu
Summary: The study analyzed urinary stones using revolution spectral CT, identifying various compositions and demonstrating characteristics of different types of stones, especially mixed compositions. The findings suggest the potential for creating a predictive model to distinguish stone compositions in vivo.
WORLD JOURNAL OF UROLOGY
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Domenico Mastrodicasa, Martin J. Willemink, Nikhil Madhuripan, Ranjit Singh Chima, Amanzo A. Ho, Yuqin Ding, Daniele Marin, Bhavik N. Patel
Summary: Single-phase DECT scan shows high accuracy in differentiating vascular from nonvascular renal lesions. Iodine concentration performs slightly better than HU measurements in differentiating vascular lesions from hemorrhagic/proteinaceous cysts.
EUROPEAN RADIOLOGY
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Edouard Reizine, Maxime Blain, Lorenzo Pescatori, Benjamin Longere, Alexandre Ingels, Wafa Boughamni, Mohamed Bouanane, Sebastien Mule, Alain Luciani
Summary: The applicability of Bosniak 2019 criteria using rapid kilovoltage-switching DECT (rsDECT) was evaluated. It was found that rsDECT is a promising tool for the classification of renal masses, particularly in differentiating solid from cystic masses. However, the enhancement thresholds need to be adjusted according to the reconstruction types and energy levels.
EUROPEAN RADIOLOGY
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Felix C. Muller, Kasper K. Gosvig, Ostergaard Mikkel, Roed Bjarne, Anders Rodell, B. orgesen Henrik, Bernhard Krauss, Jesper S. Gade, Mikael Boesen
Summary: This study aimed to investigate the use of DECT derived VNCa values for quantifying bone marrow composition in the wrist, finding that after optimizing parameters, factors such as calcium values, age, and sex do not significantly influence VNCa values. DECT can be used for absolute quantification of bone marrow composition without the need for reference bones or groups.
EUROPEAN JOURNAL OF RADIOLOGY
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Andre Euler, Sara Wullschleger, Thomas Sartoretti, Daniel Mueller, Etienne Xavier Keller, Dejan Lavrek, Olivio Donati
Summary: This study assessed the accuracy of low-dose dual-energy computed tomography (DECT) to differentiate uric acid from non-uric acid kidney stones. The results showed that DECT accurately discriminated uric acid and non-uric acid stones, even at small stone sizes.
EUROPEAN RADIOLOGY
(2023)
Article
Medicine, General & Internal
Mehmet Gezer, Leyla Karaca, Zeynep Maras Ozdemir, Aysegul Kahraman, Fatih Oguz, Fatih Erbay, Huseyin Yetis
Summary: This study aims to determine the limitations and benefits of using dual energy CT urography for patients with urinary system stones and cysts. The analysis of images showed that virtual noncontrast images and true noncontrast images were effective in detecting urinary system stones. Additionally, dual energy CT urography provided additional information for patients with urinary system disorder.
TURKISH JOURNAL OF MEDICAL SCIENCES
(2023)
Review
Medicine, General & Internal
Piotr Tarkowski, Elzbieta Czekajska-Chehab
Summary: The development of heart CT has advanced from calcium scores on electron beam CT to modern 256+-row CT scanners, with the latest breakthrough being dual-energy scanners that offer greater capabilities in heart diagnostics beyond just performing better ECG-gated angio-CT.
JOURNAL OF CLINICAL MEDICINE
(2021)