Clinical Importance of Main Portal Vein and Right Portal Vein Variations: A Prevalence Study With 128-Slice Multidetector Computed Tomography

2021 ◽  
Author(s):  
Aylin Hasanefendioglu Bayrak ◽  
Sebahat Nacar Dogan ◽  
Hatice Öztürkmen Akay
Keyword(s):  
Computed Tomography ◽  
Portal Vein ◽  
Multidetector Computed Tomography ◽  
Clinical Importance ◽  
Prevalence Study ◽  
Main Portal Vein

scholarly journals Multidetector computed tomography (MDCT) estimation of prevalence and anatomic characteristics of the sternal body foramen in the population of central Serbia

2019 ◽  
Vol 76 (2) ◽  
pp. 186-191
Author(s):  
Maja Vulovic ◽  
Ivana Zivanovic-Macuzic ◽  
Dejan Jeremic ◽  
Nela Djonovic ◽  
Aleksandar Radunovic ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Multidetector Computed Tomography ◽  
Average Distance ◽  
Clinical Importance ◽  
Distal Segment ◽  
Ethnic Populations ◽  
Frequent Form ◽  
The Mean ◽  
Average Size ◽  
Sternal Foramen

Background/Aim. The most frequent form of sternal defects is a single foramen, usually located at the distal half of the sternal body, with prevalence that varies among different ethnic populations. Clinical importance of these defects arises from various diagnostic and therapeutic sternal treatments and close location of heart, lungs and other vital organs of the chest cavity. The aim of this study was to determine the prevalence and morphometric characteristics of the sternal midline foramen in the population of central Serbia. Methods. The multidetector computed tomography (MDCT) chest images of 422 patients of both genders were analyzed. The radiological imaging was performed on 64- slice MDCT scanner (Aquilion 64, Toshiba, Japan). All scans were performed in the axial plane, with subsequent multiplanar reconstruction (MPR). Due to the angulation of the sternal body coronal curved-planar, the images were obtained in order to show the whole length of the sternum and the vertical diameter of the sternal foramen. The measurements were done using the commercially available software (Imaging Software ver. 4.1.14.0, Vital-Images). Results. The solitary foramen, located in the distal segment of the sternal body, was detected in 24 patients, representing 5.9% of the observed population with slightly higher prevalence in males. The average size of foramen was 3.9 ? 4.2 mm. The mean distance from the skin was 12.7 ? 3.3 mm, the distance from skin to pericardium was on average 37.3 ? 8.2 mm, while the average distance from skin to pleura was 25 ? 5.9 mm. The average depth of foramen 8.7 ? 2 mm, while the mean distance from the posterior surface of foramen to pericardium was 12.7 ? 9.1 mm. Conclusion. The results presented in this paper confirmed the prevalence of 5.9% regarding the midline sternal foramen in the observed population. Serious complications of the sternal puncture could be prevented by prior MDCT imaging.

Effect of saline pushing after contrast material injection in abdominal multidetector computed tomography with the use of different iodine concentrations

2006 ◽  
Vol 47 (2) ◽  
pp. 192-197 ◽  
Author(s):  
F. Tatsugami ◽  
M. Matsuki ◽  
H. Kani ◽  
M. Tanikake ◽  
M. Miyao ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Portal Vein ◽  
Multidetector Computed Tomography ◽  
Saline Solution ◽  
Contrast Material ◽  
Arterial Phase ◽  
3D Ct ◽  
3D Ct Angiography ◽  
High Level ◽  
Parenchymal Enhancement

Purpose: To investigate whether saline pushing after contrast material improves hepatic vascular and parenchymal enhancement, and to determine whether this technique permits decreased contrast material concentration. Material and Methods: 120 patients who underwent hepatic multidetector computed tomography were divided randomly into four groups (Groups A–D): receiving 100 ml of contrast material (300 mgI/ml) only (A) or with 50 ml of saline solution (B); or 100 ml of contrast material (350 mgI/ml) only (C) or with 50 ml of saline solution (D). Computed tomography (CT) values of the aorta in the arterial phase, the portal vein in the portal venous inflow phase, and the liver in the hepatic phase were measured. Visualization of the hepatic artery and the portal vein by 3D CT angiography was evaluated as well. Results: Although the enhancement values of the aorta were not improved significantly with saline pushing, they continued at a high level to the latter slices with saline pushing. The enhancement value of the portal vein increased significantly and CT portography was improved with saline pushing. The enhancement value of the liver was not improved significantly using saline pushing. In a comparison between groups B and C, the enhancement values of the aorta and portal vein and the visualization of CT arteriography and portography were not statistically different. Conclusion: The saline pushing technique can contribute to a decrease in contrast material concentration for 3D CT arteriography and portography.

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