scholarly journals Analysis of anatomical variations of the lingular artery of the left upper lobe using 3D computed tomography angiography and bronchography

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Hao He ◽  
Peng Chen ◽  
Xiaofeng Chen ◽  
Pei Yuan Wang ◽  
Shuo Yan Liu ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Computed Tomography Angiography ◽  
Anatomical Variations ◽  
3D Computed Tomography

Accurate Extraction of Coronary Vascular Structures in 2D X-ray Angiogram Using Vascular Topology Information in 3D Computed Tomography Angiography

2019 ◽  
Vol 9 (2) ◽  
pp. 242-250
Author(s):  
Taeyong Park ◽  
Sunhye Lim ◽  
Heeryeol Jeong ◽  
Juneseuk Shin ◽  
Jeongjin Lee
Keyword(s):  
Computed Tomography ◽  
Coronary Artery ◽  
Computed Tomography Angiography ◽  
Coronary Intervention ◽  
Depth Information ◽  
Vascular Structure ◽  
3D Registration ◽  
X Ray ◽  
3D Computed Tomography ◽  
Topology Information

Since the 2D X-ray angiogram enables the detection of vascular stenosis in real-time, it is essential for percutaneous coronary intervention (PCI). However, the accurate vascular structure is very difficult to determine due to background clutter and loss of depth information of 2D projection. To cope with these difficulties, we propose a fast and accurate extraction method of a vascular structure in 2D X-ray angiogram (XA) based on the vascular topology information of 3D computed tomography angiography (CTA) of the same patient. First, an initial vascular structure is robustly extracted based on vessel enhancement filtering. Then, 2D XA and 3D CTA are spatially aligned by 2D–3D registration. Finally, the 2D vascular structure is accurately reconstructed based on 3D vascular topology information by measuring the similarity of 2D and 3D vascular segments. Experimental results showed the fast and accurate extraction of a vascular structure using 10 images each of the left coronary artery (LCA) and right coronary artery (RCA). Our method can be used as a computer-aided technology for PCI. Our method can be applied to the study of other various types of vessels.

scholarly journals Computed Tomography Angiography-Based Evaluation of Anatomical Variations of the Celiac ‎Trunk and Renal Arteries

2020 ◽  
Vol 10 (3) ◽  
pp. 27797
Author(s):  
Sara Besharat ◽  
Parima Safe ◽  
Husain Karrabi ◽  
Nasser Malekpour Alamdari
Keyword(s):  
Computed Tomography ◽  
Renal Artery ◽  
Computed Tomography Angiography ◽  
Celiac Trunk ◽  
Anatomical Variations ◽  
Left Gastric Artery ◽  
Renal Arteries ◽  
Gastric Artery ◽  
Accessory Renal Artery ◽  
Prevalent Form

Background: The abdominal aorta and its main branches, such as the celiac trunk and the renal arteries are manipulated during various radiologic, surgical, and oncologic procedures. This study aimed at evaluating the anatomical pattern of these vessels to assist surgeons and radiologists reduce the risk of intra- as well as postoperative complications. Methods: A retrospective analysis of 536 Computed Tomography Angiography (CTA) studies of living potential kidney donors was conducted from January 2012 to December 2018. Results: The anatomical variations of the celiac trunk was found in 9.5% of the cases. Among these cases, the most frequent variation was the Left Gastric Artery (LGA) as the first branch of the celiac trunk (80.4% of the cases). Gender was not overall significantly associated with the variations of the celiac trunk (P=0.670); however, there was a significant correlation between male gender and the most prevalent form of the celiac trunk variation (P=0.004). Variations of the renal artery occurred in 22.94% of the cases, with the left accessory renal artery being the most common variant (28.45% of the cases). Gender and the involved side (right/left) were not significantly related to the renal artery variations (P=1.000 & P=0.546, respectively). No concomitant variation of the celiac trunk and the renal artery was detected in our study. Conclusion: The anatomical variations of the celiac trunk and the renal arteries occur commonly; thus, the branching pattern of these arteries should be assessed prior to any procedure concerning them.

Posterior C1 Stabilization Using Superior Lateral Mass as an Entry Point in a Case With Vertebral Artery Anomaly: Technical Case Report

2011 ◽  
Vol 68 (suppl_1) ◽  
pp. onsE246-onsE249 ◽  
Author(s):  
Jae Taek Hong ◽  
Woo Young Jang ◽  
Il Sup Kim ◽  
Seung Ho Yang ◽  
Jae Hoon Sung ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Vertebral Artery ◽  
Computed Tomography Angiography ◽  
Anatomical Variations ◽  
Entry Point ◽  
Screw Placement ◽  
Lateral Mass ◽  
Starting Point ◽  
Bursting Fracture ◽  
The Right

Abstract BACKGROUND AND IMPORTANCE: This is the first report of using the superior lateral mass as an alternative starting point for C1 posterior screw placement, demonstrating the importance of recognizing vertebral artery (VA) anomaly in deciding the surgical strategy for C1 screw placement. CLINICAL PRESENTATION: A 56-year-old man presented with severe neck pain after a fall. Imaging demonstrated an unstable bursting fracture at C4, C1-2 instability, and a subluxation at C2-3. Computed tomography angiography indicated that the persistent first intersegmental artery was located on the left side. The patient underwent anterior-posterior cervical fixation and fusion. Posterior C1 fixation was done with polyaxial screw rod construct using C1 superior lateral mass on the left side and C1 inferior lateral mass on the right side. The patient had no immediate postoperative deficits. At the 8-month follow-up examination, the patient was neurologically intact with a solid cervical fusion. CONCLUSION: The third segment of the VA is heterogeneous; therefore, preoperative radiologic studies should be performed to identify any anatomical variations. Using preoperative 3-dimensional computed tomography angiography, we can precisely identify an anomalous VA, thereby significantly reducing the risk of VA injury. To avoid significant morbidities associated with VA injury, a more optimal entry point for C1 fixation can be selected if a persistent first intersegmental artery or fenestrated VA is detected.

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