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[Application of color Doppler to the head and neck region]
1Department of Otorhinolaryngology, Chiba University School of Medicine.
Insights
Color Doppler ultrasound is a valuable tool for assessing head and neck vasculature, aiding in the diagnosis and management of various vascular conditions and tumors.
Area of Science:
- Medical Imaging
- Vascular Ultrasound
- Head and Neck Diagnostics
Background:
- Accurate assessment of head and neck lesions requires understanding their relationship with surrounding vasculature and hemodynamics.
- Color Doppler ultrasound has emerged as a useful diagnostic modality, but its application in the head and neck region requires further investigation.
Observation:
- Standardized methods were developed for detecting major arteries and the internal jugular vein in the head and neck.
- Specific ultrasound probes (Toshiba SSA-270A, 3.75 MHz and 2.5 MHz) were utilized for blood velocity and flow measurements.
Findings:
- The technique successfully visualized the middle cerebral, vertebral, basilar, and carotid arteries and their branches.
- Doppler-derived blood flow and velocity measurements correlated well with scintigraphy and electromagnetic studies.
- Vessels adjacent to tumors, including metastatic lesions, pseudoaneurysms, and hemangiomas, were readily detected, and their hemodynamics were characterized.
Implications:
- Color Doppler ultrasound provides crucial hemodynamic information for pre- and postoperative management in head and neck surgery.
- This technique enhances the diagnostic capabilities for various head and neck pathologies, including vascular tumors and abnormalities.
- It offers a non-invasive method for evaluating blood flow in vascular anastomoses, relevant for reconstructive procedures.
Abstract:
In the diagnosis of the head and neck region it is important to investigate the relationship between the lesions and surrounding vessels, including their hemodynamics, pre- and/or postoperatively. For this purpose color Doppler has been used in recent years. However, there is little information on the use of color Doppler in this region. This report describes an attempt to apply this examination to the region of the head and neck. Standard methods of detection of the main arteries and internal jugular vein have been devised, and the blood velocity and flow of those arteries were measured using SSA-270A convex (3.75 MHz) and linear (3.75 MHz, 2.5 MHz) array probes (Toshiba Co., Ltd.). This technique was also applied to several clinical cases. The results of these investigation were as follows. 1) The middle cerebral, vertebral and basilar, and carotid arteries and their branches could be studied. 2) Blood velocity and flow of the main arteries were reasonable when compared with the results of scintigraphy and electromagnetic studies. 3) The vessels surrounding the tumors were easy to detect. The location or hemodynamics of metastatic tumors, pseudoaneurysm, and tongue hemangioma could also be displayed. The technique was also useful for the blood flow estimation in the portion of vascular anastomosis.