Abstract
Purpose
This study aims to investigate the microsurgical anatomy of the superficial temporal artery (STA), explore the relationship between STA length and lumen diameter, and develop a reliable radiologic method for selecting STA segments for bypass surgery.
Methods
This study used 10 cadaveric dissections (20 STAs, both sides) and 20 retrospective radiological examinations (40 STAs, both sides), employing curved multiplanar reformation and flow color lookup table (CLUT) DICOM processing. Measurements included vessel lumen diameters and luminal cross-sectional thicknesses 3 mm proximal to the STA bifurcation, 3 mm distal to the frontal branch, 5 cm distal to the frontal branch, 3 mm distal to the parietal branch, and 5 cm distal to the parietal branch. The distance between the STA bifurcation and the superior zygomatic border (SZB) was also measured. In our analysis, descriptive statistics encompassed mean, standard deviation (SD), standard error, minimum and maximum values, and distributions. Comparative statistics were performed using Student’s t-test, with statistical significance set at p < 0.05.
Results
There were no statistically significant differences between STA measurements of bifurcation distances (p = 0.88) and lumen diameters (p = 0.46) between cadavers and radiological measures. However, lumen thicknesses were larger in frontal branches than parietal branches at the seventh and eighth centimeter (p = 0.012, p = 0.039). Branches became thinner distally from the zygoma in both cadavers and radiological image measurements.
Conclusion
The CLUT DICOM processing radiological measures provided the high-precision required to enable pre-surgical vessel selection for extracranial-intracranial bypass. The results show that STA vessel luminal diameters are sufficient (> 1 mm) for bypass surgery in the first 9 cm but gradually decrease after that. Also shown is that the choice of frontal versus parietal branches depends on individual anatomical features; therefore, careful preoperative radiological examination is critical.
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Data availability
The data and materials supporting the findings of this study are available upon reasonable request. We are committed to ensuring transparency and reproducibility in our research. For any inquiries regarding the data or materials used in this study, please contact Ayhan Comert, at comertayhan@yahoo.com. We will be pleased to provide detailed information to facilitate further research and validation.
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Funding
We confirm that this research received no specific funding or financial support from any public, private, or commercial organization. All expenses related to this study were self-funded by the authors. The authors have no financial interests or affiliations that could have influenced the outcomes or conclusions presented in this manuscript.
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OS Sahin: Project development, Data collection, Manuscript writing. S Hanalioglu: Data analysis. AM Sanli: Protocol development. A Bakir: Data management. A Comert: Data collection, Manuscript editing. MK Baskaya: Manuscript editing. All authors have contributed significantly, and that all authors are in agreement with the manuscript. All authors reviewed the manuscript.
The authors thank Steven L. Goodman, Ph.D. for his editing and technical review of this work.
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This study was performed according to ethical guidelines for research and publication. Ethics committee approval was obtained from the Clinical Research Ethics Committee of the University of Health Sciences Ankara Dışkapı Yıldırım Beyazıt Training and Research Hospital (Decision 66/12) for radiological analysis. Ethical approval was not required for the cadaveric study. All cadavers were supplied from a donated institution with subjects giving written informed consent for the use of samples in scientifc studies. All the performed procedures in this study that involve cadavers followed the ethical standards of the Institutional Review Board and the 1964 Helsinki declaration and its later amendments or comparable ethical standards The authors sincerely thank those who donated their bodies to science that enabled this anatomical research. Results from such research can potentially increase humanity’s overall knowledge, which can then improve patient care. Therefore, these donors and their families deserve our highest gratitude.
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Sahin, O.S., Hanalioglu, S., Metin Sanli, A. et al. Angiographic measurement of the superficial temporal artery for potential use in cerebral bypass surgery: a combined radiological and cadaveric study. Surg Radiol Anat 46, 605–614 (2024). https://doi.org/10.1007/s00276-024-03325-w
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DOI: https://doi.org/10.1007/s00276-024-03325-w