Vascular Anatomy of the Neck/Spine

This case report describes the chemoembolization of a small hepatocellular carcinoma employing a lipiodol drug delivery system utilizing a novel arterial pathway. Because the target lesion was precariously located adjacent to the inferior heart border and the diaphragm, it was unsuitable for imaging-guided microwave ablation. To achieve chemoembolization, several intraprocedural adaptations were necessary, given the variant anatomy encountered and difficulty accessing the left gastric artery through a celiac artery approach. The left gastric artery was selected from a superior mesenteric artery approach through the pancreaticoduodenal arcade (Rio Branco’s arcade). This case illustrates the importance of a mastery of the vascular anatomy and variants of hepatic arterial flow.

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Laterality orcomplex donor vascular anatomy should not preclude successful living donor kidney transplantation

10.26226/morressier.5a38ffa3d462b8029238b6ac ◽

2018 ◽

Author(s):

Aisling Courtney

Keyword(s):

Kidney Transplantation ◽

Living Donor ◽

Vascular Anatomy ◽

Donor Kidney ◽

Living Donor Kidney Transplantation ◽

Donor Kidney Transplantation ◽

Living Donor Kidney

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Quality Control in 3D Printing: Accuracy Analysis of 3D-Printed Models of Patient-Specific Anatomy

Materials ◽

10.3390/ma14041021 ◽

2021 ◽

Vol 14 (4) ◽

pp. 1021

Author(s):

Bernhard Dorweiler ◽

Pia Elisabeth Baqué ◽

Rayan Chaban ◽

Ahmed Ghazy ◽

Oroa Salem

Keyword(s):

Wall Thickness ◽

Large Scale ◽

Fused Deposition Modeling ◽

Vascular Anatomy ◽

3D Models ◽

Patient Specific ◽

Stl File ◽

Fused Deposition ◽

3D Printed ◽

The Mean

As comparative data on the precision of 3D-printed anatomical models are sparse, the aim of this study was to evaluate the accuracy of 3D-printed models of vascular anatomy generated by two commonly used printing technologies. Thirty-five 3D models of large (aortic, wall thickness of 2 mm, n = 30) and small (coronary, wall thickness of 1.25 mm, n = 5) vessels printed with fused deposition modeling (FDM) (rigid, n = 20) and PolyJet (flexible, n = 15) technology were subjected to high-resolution CT scans. From the resulting DICOM (Digital Imaging and Communications in Medicine) dataset, an STL file was generated and wall thickness as well as surface congruency were compared with the original STL file using dedicated 3D engineering software. The mean wall thickness for the large-scale aortic models was 2.11 µm (+5%), and 1.26 µm (+0.8%) for the coronary models, resulting in an overall mean wall thickness of +5% for all 35 3D models when compared to the original STL file. The mean surface deviation was found to be +120 µm for all models, with +100 µm for the aortic and +180 µm for the coronary 3D models, respectively. Both printing technologies were found to conform with the currently set standards of accuracy (<1 mm), demonstrating that accurate 3D models of large and small vessel anatomy can be generated by both FDM and PolyJet printing technology using rigid and flexible polymers.

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The functional vascular anatomy of the swine for research

Vascular ◽

10.1177/1708538121996500 ◽

2021 ◽

pp. 170853812199650

Author(s):

Joseph Edwards ◽

Hossam Abdou ◽

Neerav Patel ◽

Marta J Madurska ◽

Kelly Poe ◽

...

Keyword(s):

Translational Research ◽

Functional Anatomy ◽

Three Dimensional ◽

Vascular Anatomy ◽

Review Article ◽

Imaging Data ◽

Preclinical Research ◽

Iodinated Contrast ◽

Translational Research Program ◽

And Function

Objectives Swine ( Sus Scrofa) are utilized broadly in research settings, given similarities to human vessel size and function; however, there are some important differences for clinicians to understand in order to interpret and perform translational research. This review article uses angiograms acquired in the course of a translational research program to present a description of the functional anatomy of the swine. Methods Digital subtraction angiography and computed tomography angiography were obtained throughout the course of multiple studies utilizing power injection with iodinated contrast. Subtracted two-dimensional images and three-dimensional multiplanar reformations were utilized post image acquisition to create maximal intensity projections and three-dimensional renderings of using open-source software (OsiriX). These imaging data are presented along with vessel measurements for reference. Results An atlas highlighting swine vascular anatomy, with an emphasis on inter-species differences that may influence how studies are conducted and interpreted, was compiled. Conclusions Swine are utilized in broad-reaching fields for preclinical research. While many similarities between human and swine vasculature exist, there are important differences to consider when conducting and interpreting research. This review article highlights these differences and presents accompanying images to inform clinicians gaining experience in swine research.

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Comparison between C-arm cone beam computed tomography and interventional angiography in transarterial chemoembolization of hepatocellular carcinoma

Egyptian Journal of Radiology and Nuclear Medicine ◽

10.1186/s43055-019-0053-4 ◽

2019 ◽

Vol 50 (1) ◽

Author(s):

Ibraheim Ahmed Diab ◽

Shaimaa Abdel-hamid Hassanein ◽

Hala Hafez Mohamed

Keyword(s):

Computed Tomography ◽

Hepatocellular Carcinoma ◽

Cone Beam Computed Tomography ◽

Vascular Anatomy ◽

Cone Beam ◽

Focal Lesion ◽

Focal Lesions ◽

Conventional Angiography ◽

Interventional Angiography ◽

Cross Sectional

Abstract Background Hepatocellular carcinoma (HCC) is the most common primary hepatic malignancy of adults. One of the established treatment procedures performed worldwide for HCC is transcatheter arterial chemoembolization (TACE). By using conventional angiography in TACE, we can detect and identify the vascular anatomy of the liver through obtaining 2D images. Recently C-arm cone beam computed tomography (CBCT) is introduced for obtaining cross-sectional and three-dimensional (3D) images for better visualization of small tumors and their feeding arteries. Results The number of detected focal lesions by angiography was 51 compared to 87 focal lesion detected by CBCT; of those, 45 and 77 were active lesions by both procedures respectively. For lesions, less than 1 cm CBCT detected 23 lesions while angiography detected only one lesion. Angiography detected 87 feeding arterial branch while cone beam CT-HA detected 130 branches to the same number of target lesion. Feeder tractability and confidence were better by CBCT. Conclusion CBCT is superior to angiography in tumor detectability, detection of lesions less than 1 cm, feeder detection, and feeder traction; however, conventional angiography and DSA are irreplaceable. Thus, combination of CBCT with angiography during TACE produces better results and less complication.

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Precision vascular anatomy for minimally invasive distal pancreatectomy: A systematic review

Journal of Hepato-Biliary-Pancreatic Sciences ◽

10.1002/jhbp.903 ◽

2021 ◽

Author(s):

Hitoe Nishino ◽

Giuseppe Zimmitti ◽

Takao Ohtsuka ◽

Mohammed Abu Hilal ◽

Brian K. P. Goh ◽

...

Keyword(s):

Systematic Review ◽

Minimally Invasive ◽

Distal Pancreatectomy ◽

Vascular Anatomy

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Preoperative Angiography for Free Fibula Flap Harvest: A Case Series: L’angiographie préopératoire pour prélever un lambeau libre de la fibula : une série de cas

Plastic Surgery ◽

10.1177/2292550321996960 ◽

2021 ◽

pp. 229255032199696

Author(s):

Noor Alolabi ◽

Haley Augustine ◽

Forough Farrokhyar ◽

Carolyn Levis

Keyword(s):

Lower Extremity ◽

Physical Examination ◽

Perioperative Complications ◽

Case Series ◽

Vascular Anatomy ◽

Limb Ischemia ◽

Free Fibula Flap ◽

Retrospective Case ◽

Fibula Flap ◽

Free Fibula

Purpose: To assess if preoperative angiography of the lower extremity is necessary to detect abnormalities that alter operative planning of a free fibula flap (FFF). The secondary objective is to determine whether abnormalities are identified on physical examination. Methods: A retrospective case series of patients receiving preoperative lower extremity angiography for FFF was performed. Between November 2004 and July 2016, patients assessed for FFF reconstruction by a single surgeon were reviewed. Outcomes analyzed were preoperative physical examination, angiography findings, changes in operative plan, and perioperative complications including flap failure and limb ischemia. Level of agreement between physical examination and angiography findings was analyzed. Results: A total of 132 consecutive patients were assessed for FFF, of which 70 met the inclusion criteria. Mean age was 60.9 (range: 22-88) years old. All patients underwent aortic angiogram runoff, except for 2 who received computed tomography angiography. The surgical plan was altered based on angiography findings in 9 (12.9%) patients, and 7 (77.8%) of these cases had a normal physical examination. A further 6 (8.6%) patients had physical examination findings precluding the use of FFF, whereas imaging demonstrated the contrary. Physical examination demonstrated low predictability of aberrant vascular anatomy, with a sensitivity of 22.2%. There were no limb ischemia complications. Conclusions: Routine preoperative angiography of the lower extremity for all patients being evaluated for FFF is important to ensure safety and success of the procedure. Physical examination alone is insufficient to detect vascular abnormalities that may result in limb or flap compromise.

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