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Ultrasonography-Based Thyroidal and Perithyroidal Anatomy and Its Clinical Significance.

Ha EJ, Baek JH, Lee JH - Korean J Radiol (2015)

Bottom Line: For a safe and effective US-guided procedure, knowledge of neck anatomy, particularly that of the nerves, vessels, and other critical structures, is essential.Therefore, the aim of this article was to elucidate US-based thyroidal and perithyroidal anatomy, as well as its clinical significance in the use of prevention techniques for complications during the US-guided procedures.Knowledge of these areas may be helpful for maximizing the efficacy and minimizing the complications of US-guided procedures for the thyroid and other neck lesions.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Ajou University School of Medicine, Suwon 443-380, Korea.

ABSTRACT
Ultrasonography (US)-guided procedures such as ethanol ablation, radiofrequency ablation, laser ablation, selective nerve block, and core needle biopsy have been widely applied in the diagnosis and management of thyroid and neck lesions. For a safe and effective US-guided procedure, knowledge of neck anatomy, particularly that of the nerves, vessels, and other critical structures, is essential. However, most previous reports evaluated neck anatomy based on cadavers, computed tomography, or magnetic resonance imaging rather than US. Therefore, the aim of this article was to elucidate US-based thyroidal and perithyroidal anatomy, as well as its clinical significance in the use of prevention techniques for complications during the US-guided procedures. Knowledge of these areas may be helpful for maximizing the efficacy and minimizing the complications of US-guided procedures for the thyroid and other neck lesions.

No MeSH data available.


Ultrasonography (US) features and histologic correlation of neck nerve.A. On transverse scan, nerve (arrowhead) is seen as honeycomb or reticular pattern with small, hypoechoic, rounded structures. B. On longitudinal scan, it is seen as striated pattern with several parallel echogenic lines (arrowheads). C, D. Schematic histologic structure of nerve bundle corresponds to US features.
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Figure 2: Ultrasonography (US) features and histologic correlation of neck nerve.A. On transverse scan, nerve (arrowhead) is seen as honeycomb or reticular pattern with small, hypoechoic, rounded structures. B. On longitudinal scan, it is seen as striated pattern with several parallel echogenic lines (arrowheads). C, D. Schematic histologic structure of nerve bundle corresponds to US features.

Mentions: Among the anatomic structures, nerve injuries may be serious complications in practice, and are therefore discussed in detail (Fig. 1). Normal peripheral nerves can usually be demonstrated with high-resolution US; however, the US feature of the nerve may vary depending on the equipment used, location in the neck, and size of the nerve (181920). With 10-17 MHz frequency probes, the nerve is seen as a honeycomb or reticular pattern with approximately 2 to 8 hypoechoic rounded fascicles according to size surrounded by hyperechoic epineurium (18192021). On longitudinal scans, the nerve is seen as a striated pattern with several parallel echogenic lines of its internal structures (Fig. 2). Detection of small nerves may be operator-dependent, and requires a longer learning curve due to difficulties in identifying subtle anatomic details using US.


Ultrasonography-Based Thyroidal and Perithyroidal Anatomy and Its Clinical Significance.

Ha EJ, Baek JH, Lee JH - Korean J Radiol (2015)

Ultrasonography (US) features and histologic correlation of neck nerve.A. On transverse scan, nerve (arrowhead) is seen as honeycomb or reticular pattern with small, hypoechoic, rounded structures. B. On longitudinal scan, it is seen as striated pattern with several parallel echogenic lines (arrowheads). C, D. Schematic histologic structure of nerve bundle corresponds to US features.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4499539&req=5

Figure 2: Ultrasonography (US) features and histologic correlation of neck nerve.A. On transverse scan, nerve (arrowhead) is seen as honeycomb or reticular pattern with small, hypoechoic, rounded structures. B. On longitudinal scan, it is seen as striated pattern with several parallel echogenic lines (arrowheads). C, D. Schematic histologic structure of nerve bundle corresponds to US features.
Mentions: Among the anatomic structures, nerve injuries may be serious complications in practice, and are therefore discussed in detail (Fig. 1). Normal peripheral nerves can usually be demonstrated with high-resolution US; however, the US feature of the nerve may vary depending on the equipment used, location in the neck, and size of the nerve (181920). With 10-17 MHz frequency probes, the nerve is seen as a honeycomb or reticular pattern with approximately 2 to 8 hypoechoic rounded fascicles according to size surrounded by hyperechoic epineurium (18192021). On longitudinal scans, the nerve is seen as a striated pattern with several parallel echogenic lines of its internal structures (Fig. 2). Detection of small nerves may be operator-dependent, and requires a longer learning curve due to difficulties in identifying subtle anatomic details using US.

Bottom Line: For a safe and effective US-guided procedure, knowledge of neck anatomy, particularly that of the nerves, vessels, and other critical structures, is essential.Therefore, the aim of this article was to elucidate US-based thyroidal and perithyroidal anatomy, as well as its clinical significance in the use of prevention techniques for complications during the US-guided procedures.Knowledge of these areas may be helpful for maximizing the efficacy and minimizing the complications of US-guided procedures for the thyroid and other neck lesions.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Ajou University School of Medicine, Suwon 443-380, Korea.

ABSTRACT
Ultrasonography (US)-guided procedures such as ethanol ablation, radiofrequency ablation, laser ablation, selective nerve block, and core needle biopsy have been widely applied in the diagnosis and management of thyroid and neck lesions. For a safe and effective US-guided procedure, knowledge of neck anatomy, particularly that of the nerves, vessels, and other critical structures, is essential. However, most previous reports evaluated neck anatomy based on cadavers, computed tomography, or magnetic resonance imaging rather than US. Therefore, the aim of this article was to elucidate US-based thyroidal and perithyroidal anatomy, as well as its clinical significance in the use of prevention techniques for complications during the US-guided procedures. Knowledge of these areas may be helpful for maximizing the efficacy and minimizing the complications of US-guided procedures for the thyroid and other neck lesions.

No MeSH data available.