scholarly journals Comparison of Diagnostic Medical Sonography, Computed Tomography, Magnetic Resonance Imaging, and Contrast-Enhanced Ultrasound in the Investigation of Renal Lesions

2019 ◽  
Vol 36 (1) ◽  
pp. 37-44
Author(s):  
Jessica T. Prince
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Imaging Techniques ◽  
Imaging Modalities ◽  
Contrast Enhanced Ultrasound ◽  
Resonance Imaging ◽  
Renal Masses ◽  
Renal Lesions ◽  
Contrast Enhanced

This review explores the classification and evaluation of suspicious renal lesions across several radiologic imaging modalities. Diagnostic medical sonography (DMS), computed tomography (CT), magnetic resonance imaging (MRI), and contrast-enhanced ultrasound (CEUS) are the primary modalities used to investigate questionable lesions found within the kidneys. Renal masses may range from completely benign to malignant. They are classified based on many different features and characteristics. These lesions may be simple cystic, complex cystic, or solid in nature. Masses may also exhibit varying degrees of vascularity, septations, and calcifications. The discussed imaging modalities have varying strengths, limitations, and implications for use. Imaging techniques may be used independently or in conjunction to best diagnose and treat a patient with a suspicious renal mass. The aim of this review was to describe the diagnostic value of the imaging modalities (DMS, CT, MRI, and CEUS) and their role in the evaluation of suspicious renal lesions.

The Imaging Performances of Contrast-Enhanced Ultrasound, Computed Tomography, and Magnetic Resonance Imaging for Extrahepatic Cholangiocarcinoma

2020 ◽  
Vol 10 (9) ◽  
pp. 2192-2197
Author(s):  
Zhong Xin ◽  
Xiangdang Long ◽  
Hongtian Chen ◽  
Yongjun Hu
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Diagnostic Methods ◽  
Contrast Enhanced Ultrasound ◽  
Resonance Imaging ◽  
Extrahepatic Cholangiocarcinoma ◽  
Enhanced Mri ◽  
Ultrasound Computed Tomography ◽  
Contrast Enhanced

Objective: To compare the imaging performances of contrast-enhanced ultrasound, computed tomography (CT), and magnetic resonance imaging (MRI), thereby explore their values and significances in clinical practices of diagnosing extrahepatic cholangiocarcinoma. Methods: A total of 56 patients with extrahepatic cholangiocarcinoma were included as research objects. All the patients underwent contrast-enhanced ultrasound examination, enhanced MRI examination, and multi-slice helical CT (MSCT) examination. The major contents of analysis and observation included the location of the lesion, the range, the features of blood flow signal, the echoes of lesions at various phases, the enhancement levels, and the morphology. Then, the tabu search algorithm was applied to reconstruct the images, thereby completing the construction of the image objective function. Results: In terms of histopathological typing, 9 papillary adenocarcinomas, 22 invasive adenocarcinomas, and 25 poorly-to-moderate differentiated adenocarcinomas were found. In terms of ultrasound results, 27 lesions were isoechoic, 23 lesions were hypoechoic, and 6 lesions were hyperechoic. In terms of MRI results, 66% of the patients had hyperechoic lesions during the arterial phase, and 55.1% of the patients had isoechoic lesions during the portal phase. During the delay phase, 30.3% of the patients had isoechoic lesions, and 58.9% of the patients had hyperechoic lesions. Conclusion: Contrast-enhanced ultrasound, CT, and MRI had magnificent values and significance in the clinical diagnosis of extrahepatic cholangiocarcinoma, which could be widely applied in the diagnosis and treatment of extrahepatic cholangiocarcinoma. In addition, the contrast-enhanced ultrasound and CT could be used as an effective supplementary basis for enhanced MRI diagnosis. These three diagnostic methods had respective advantages and could be used in combination.

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