scholarly journals IMPROVING CONSPICUITY OF THE CANINE GASTROINTESTINAL WALL USING DUAL PHASE CONTRAST-ENHANCED COMPUTED TOMOGRAPHY: A RETROSPECTIVE CROSS-SECTIONAL STUDY

2017 ◽  
Vol 58 (2) ◽  
pp. 151-162 ◽  
Author(s):  
Ella Fitzgerald ◽  
Richard Lam ◽  
Randi Drees
Keyword(s):  
Computed Tomography ◽  
Phase Contrast ◽  
Cross Sectional Study ◽  
Dual Phase ◽  
Sectional Study ◽  
Cross Sectional ◽  
Contrast Enhanced ◽  
Enhanced Computed Tomography ◽  
Contrast Enhanced Computed Tomography

scholarly journals Normal Anatomy and Variants of Renal Vasculature with Multidetector Computed Tomography in a Tertiary Care Hospital: A Descriptive Cross-sectional Study

2020 ◽  
Vol 58 (231) ◽  
Author(s):  
Pradeep Raj Regmi ◽  
Isha Amatya ◽  
Prakash Kayastha ◽  
Sharma Paudel ◽  
Sundar Suwal ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Tertiary Care ◽  
Cross Sectional Study ◽  
Care Hospital ◽  
Renal Vasculature ◽  
Cross Sectional ◽  
Contrast Enhanced ◽  
Enhanced Computed Tomography ◽  
Renal Vascular ◽  
Contrast Enhanced Computed Tomography

Introduction: Variation in renal vasculature is quite common and has important implication in surgical planning. Computed tomography has high accuracy in evaluation of renal vasculature. The study was done to estimate the prevalence and pattern of variations of renal vasculature through contrast-enhanced computed tomography in a tertiary care hospital. Methods: A descriptive cross-sectional study was conducted from 6th April 2016 to 6th April 2017. Ethical approval was taken from Institutional Review Board, Institute of Medicine (reference number 325). Contrast-enhanced computed tomography was performed on 188 patients enrolled through convenient sampling and variations of renal vasculature were evaluated. Data were analyzed based on the types of variations and descriptive statistics such as frequency and percentage using Statistical Package for the Social Sciences, version 16. Results: Out of the 188 patients, 60 (31.9%) had accessory renal arteries. The most common variant was hilar artery comprising 38 (20.2%) cases whereas polar artery was present in 21(11.1%) cases and the capsular artery was present in one (0.5%) case. Eleven (5.8%) cases had single and five (2.6%) had multiple accessory polar arteries. Single and unilateral hilar artery was present in 28 (14.8%) whereas multiple accessory hilar arteries were present in two (1.1%) cases. Early bifurcation of the renal artery was noted in 15 (7.9%) cases. Double right renal vein was the most common venous variant seen in 12 (6.3%) cases. Retroaortic left renal vein was noted in four (2.1%) cases. Conclusions: Significant patients undergoing computed tomography examination had renal vascular variations. Therefore, Computed Tomography plays key role as a noninvasive method for anatomic evaluation of renal vascular variants.

scholarly journals Triple-Phase Multidetector Computed Tomography in Distinguishing Canine Hepatic Lesions

Animals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 11
Author(s):  
Ladislav Stehlík ◽  
Morena Di Tommaso ◽  
Francesca Del Signore ◽  
Michaela Paninárová ◽  
Rossella Terragni ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Phase Contrast ◽  
Normal Liver ◽  
Liver Parenchyma ◽  
Liver Lesions ◽  
Contrast Enhanced ◽  
Malignant Liver ◽  
Enhanced Computed Tomography ◽  
Contrast Enhanced Computed Tomography ◽  
Malignant Liver Lesions

The liver has a unique vascular supply, and triple-phase contrast-enhanced computed tomography examinations are being performed in order to characterize liver lesions. This study aimed to look for any associations between the attenuation values of liver lesions and their histological classification. The inclusion criteria for this retrospective study were focal or multifocal liver lesions and histological diagnosis. All of the dogs underwent pre-contrast and triple-phase postcontrast computed tomography (CT) examinations with identical timings of the postcontrast series. Thirty-one dogs were included in the study, and various benign and malignant pathologies were identified. The results did not identify any significant differences between the benign and malignant liver lesions, nor between the individual histological diagnoses. Inflammatory lesions were significantly different compared to the normal liver parenchyma, and significant hypoattenuation was found in the portal and delayed venous phases. Hemangiosarcomas were significantly hypoattenuating to the normal liver parenchyma in the pre-contrast and arterial phases, and also to all of the benign lesions in the arterial phase. The other pathologies showed variable attenuation patterns in the different postcontrast phases, and differentiation was not possible. On the basis of this study, triple-phase contrast-enhanced computed tomography cannot differentiate between benign and malignant liver lesions, and biopsy and further histological analysis are necessary.

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