The cavernous carotid inferolateral trunk and persistent primitive maxillary arteries: analysis of dissected arterially injected fetal specimens and high-resolution micro-CT of the dog’s anastomotic arteries

Abstract Purpose The presence of a persistent primitive maxillary artery is described in the literature dealing with the development of the cavernous carotid inferolateral trunk, and the relevant similarities of the cranial circulation of the human and dog. The literature includes no dissection photographs of the above-mentioned two human fetal arteries, only diagrammatic representations. This study’s objectives were to analyze photographs of fetal dissections for the presence of these two arteries, and also investigate the possibility of obtaining, in preserved dog specimens, high-resolution micro-CT imaging of arteries homologous with the above-mentioned two human arteries. Methods The literature describing the embryologic development of the cavernous carotid inferolateral trunk, the persistent primitive maxillary arteries, and their homologies in the dog was reviewed. Relevant dissections of fetal specimens were analyzed. High-resolution micro-CT images of un-dissected dog arteries were produced and analyzed. Results Photographs of fetal specimen dissections demonstrate the cavernous carotid inferolateral trunk. A separate persistent primitive maxillary artery was not present in the dissected specimens. High-resolution micro-CT images of the dog demonstrate homologous arteries with segments of the human inferolateral trunk, and other skull base and brain arteries. Conclusion This investigation provides the only photographs in the literature of dissected human fetal cavernous carotid inferolateral trunks. A persistent primitive maxillary artery was not present in the dissected specimens and is a non-existent structure, likely a previously misidentified carotid inferolateral trunk. High-resolution micro-CT images of the dog visualized arteries that are homologous to segments of the human cavernous carotid inferolateral trunk artery.

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A Multi-Scale Topo-Morphologic Opening Approach For Segmenting The Pulmonary Acinus In High Resolution Micro-CT Images Of Fixed Murine Lungs

10.1164/ajrccm-conference.2010.181.1_meetingabstracts.a3630 ◽

2010 ◽

Cited By ~ 1

Author(s):

Zhiyun Gao ◽

Dragoş M. Vasilescu ◽

Eric A. Hoffman ◽

Punam K. Saha

Keyword(s):

High Resolution ◽

Ct Images ◽

Micro Ct ◽

Multi Scale ◽

Pulmonary Acinus

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Computational biomechanics of the distal tibia from high-resolution MR and micro-CT images

Bone ◽

10.1016/j.bone.2010.05.039 ◽

2010 ◽

Vol 47 (3) ◽

pp. 556-563 ◽

Cited By ~ 41

Author(s):

Chamith S. Rajapakse ◽

Jeremy F. Magland ◽

Michael J. Wald ◽

X. Sherry Liu ◽

X. Henry Zhang ◽

...

Keyword(s):

High Resolution ◽

Distal Tibia ◽

Ct Images ◽

Micro Ct ◽

Computational Biomechanics

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A Comparative Study of High-Resolution Chemical-Shift-Eliminated Magnetic Resonance Imaging of Finger Specimens with Microcomputed Tomography

Journal of Clinical Imaging Science ◽

10.25259/jcis-20-2019 ◽

2019 ◽

Vol 9 ◽

pp. 19

Author(s):

Wingchi Edmund Kwok ◽

Zhigang You ◽

Johnny Monu ◽

Hua He

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

High Resolution ◽

Chemical Shift ◽

Microcomputed Tomography ◽

Bone Defects ◽

Ct Images ◽

Micro Ct ◽

Resonance Imaging ◽

Finger Joints

Objective: High-resolution images of finger joints with chemical-shift elimination can be obtained using an interleaved water-fat (IWF) sequence. This study assessed IWF imaging of finger joints in the delineation of bone structures by comparing images of cadaver fingers with those of microcomputed tomography (CT) that served as a standard reference. Materials and Methods: IWF images with spatial resolution of 176 µ × 176 µ × 300 µ were obtained from the distal and proximal interphalangeal joints of two cadaver finger specimens using a custom-built radiofrequency receive coil at 1.5T. Regular three-dimensional gradient-echo (GRE) images were also acquired with similar parameters and compared with the IWF images to evaluate the effects of chemical shift. Micro-CT scans were obtained and served as the standard reference. The image data were reviewed by two experienced musculoskeletal radiologists in consensus. The delineation of normal joint structures and abnormalities in the finger specimens as revealed by the magnetic resonance imaging (MRI) and micro-CT images were compared. The IWF and regular GRE images were assigned scores 0–3 for the depiction of apparent marginal bone defects, with zero being the same in appearance to the micro-CT image and three as having minimal resemblance to it. Statistical analysis of the scoring results was conducted to compare the two MRI techniques. Results: The high-resolution IWF images provided accurate delineation of bone and calcified structures as seen in micro-CT. The thickness of subchondral bone was depicted similarly on the IWF water + fat and the micro-CT images but not on the regular GRE images. The regular GRE sequence showed false marginal bone defects not observed with IWF and micro-CT. In addition, the IWF water-only images facilitated the identification of bone cyst by revealing its water content. Conclusion: High-resolution IWF imaging should be useful for the early diagnosis and treatment assessment of arthritis and should also benefit basic research in the pathophysiology of the disease.

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