Anatomical study of the inferior mesenteric vein using three-dimensional computed tomography angiography in laparoscopy-assisted surgery for left-sided colorectal cancer

Abstract Purpose In the present study, we focused on the accessory middle colic artery and aimed to increase the safety and curative value of colorectal cancer surgery by investigating the artery course and branching patterns. Methods We included 143 cases (mean age, 70.4 ± 11.2 years; 86 males) that had undergone surgery for neoplastic large intestinal lesions at the First Department of Surgery at Yamagata University Hospital between August 2015 and July 2018. We constructed three-dimensional (3D) computed tomography (CT) angiograms and fused them with reconstructions of the large intestines. We investigated the prevalence of the accessory middle colic artery, the variability of its origin, and the prevalence and anatomy of the arteries accompanying the inferior mesenteric vein at the same level as the origin of the inferior mesenteric artery. Results Accessory middle colic artery was observed in 48.9% (70/143) cases. This arose from the superior mesenteric artery in 47, from the inferior mesenteric artery in 21, and from the celiac artery in two cases. In 78.2% (112/143) cases, an artery accompanying the inferior mesenteric vein was present at the same level as the origin of the inferior mesenteric artery; this artery was the left colic artery in 92, the accessory middle colic artery in 11, and it divided and became the left colic artery and the accessory middle colic artery in 10 cases. Conclusion 3D CT angiograms are useful for preoperative evaluation. Accessory middle colic arteries exist and were observed in 14.9% of cases.

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Morphological changes in the vertebral artery subsequent to cervical spine degeneration and aging: analyses by computed tomography angiography using multiplanar and three-dimensional reconstructions

World Neurosurgery ◽

10.1016/j.wneu.2021.03.080 ◽

2021 ◽

Author(s):

Takashi Ohnishi ◽

Kota Suda ◽

Miki Komatsu ◽

Satoko Matsumoto Harmon ◽

Takamasa Watanabe ◽

...

Keyword(s):

Computed Tomography ◽

Cervical Spine ◽

Vertebral Artery ◽

Computed Tomography Angiography ◽

Morphological Changes ◽

Three Dimensional ◽

Spine Degeneration

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Variant Anatomy of the Renal Arteries: a Computed Tomography Angiography Study

Journal of Anatomy and Histopathology ◽

10.18499/2225-7357-2020-9-1-43-48 ◽

2020 ◽

Vol 9 (1) ◽

pp. 43-48

Author(s):

A. V. Kolsanov ◽

A. K. Nazaryan ◽

A. S. Voronin ◽

O. A. Gelashvili

Keyword(s):

Computed Tomography ◽

Clinical Practice ◽

Renal Artery ◽

Computed Tomography Angiography ◽

Three Dimensional ◽

Renal Arteries ◽

Software Complex ◽

Three Dimensional Modeling ◽

Dimensional Modeling ◽

Variant Anatomy

The article discusses variant anatomy of the renal arteries, potentials of three-dimensional modeling and use of these data in clinical practice. Despite a large number of studies based on both morphological and clinical approaches there is no general consensus regarding options for dividing the renal artery, the number of its branches, their topolocalization. This is due to the fact that most of the research studies are based on cadaveric material, fixed and unfixed. It is difficult to apply these data to explain medical conditions and pathologies of particular patients. Computed tomography allows performing in vivo investigation of various morphometric parameters of the renal arteries, and these findings can subsequently be used in disease diagnostics and treatment.The aim of the study was to identify patterns of topography, linear dimensions and variant anatomy of the human renal arteries based on computed tomography angiography (CTA) with three-dimensional modeling, and to apply CTA findings in clinical practice.Material and methods. The study included CTA images of the abdomen of 130 patients, and their threedimensional models. A hardware-software complex "Luch-S" and software complex "Avtoplan" (Russian project) were used to perform morphometric analysis. The diameter of the renal artery mouth, the level of origin of the renal artery mouths, as well as the angles between the renal arteries and the abdominal aorta were analyzed morphometrically and statistically.Results. The authors have developed recommendations how to use three-dimensional modeling of vascular- organ complexes in patients at the stage of preoperative planning and intraoperative navigation in clinical practice. Generated dataset of personalized morphometric data can be applied to teach basic operation techniques involving possible damage to abnormal vessels, as well as training specific surgical procedures involving the kidney and its vessels in a simulation-based surgical clinic.

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