THE MRI of intraparotid facial nerve with micro coil and 3D-PSIF-DWI sequence

Congress:

ECR 2013

Poster Number:

C-0121

Type:

Scientific Exhibit

Keywords:

Head and neck, Neuroradiology peripheral nerve, MR, MR-Diffusion/Perfusion, Imaging sequences, Neoplasia

Authors:

Z. Y. Yang, Z. Zhou, Q.-F. Meng; Guangzhou/CN

DOI:

10.1594/ecr2013/C-0121

DOI-Link:

https://dx.doi.org/10.1594/ecr2013/C-0121

Fig. 1: Fig1.Displaying the facial nerve main trunk and the first branch with head...

Fig. 2: Displaying the facial nerve main trunk and the first branch more clearly with...

Fig. 3: Fig3.Displaying the 1st branch of the nerve with head coil.

Fig. 4: Displaying the 1st branch of the nerve more clearly with micro coil than that...

Purpose

To explore the clinical value to show theintraparotid facial nerve segment withMicro surface coil combined with 3D-PSIF-DWI sequence

Methods and Materials

21 healthy volunteers scanned with Micro surface coil(4cm) and head coil combined with 3D-PSIF-DWI sequence. The Imagings of the intraparotid facial nerve segment between two kinds of coil were analyzed and compared. The display ratio and SIR (ratio of singnal intense) of facial nerve to parotid were accounted and compared between two kinds of coil

Results

The ratio of displaying the main trunk, first branch (cervicofacial branches、temporofacial branches ) and secondary branch (temporal branches、zygomatic branches、buccal branches、marginal mandibular branches、cervical branches ) of facial nerve in parotid gland sectionwas 100%、97.6%、51.4% with head coil combined with 3D-PSIF-DWI sequence, and 100%、100%、83.8%with micro surface coil.There was statistical significant difference(p <0.05)in the ratio of displaying the facial nervesecondary branches between two kinds of coils.The SIR(ratio of singnal intense) of facial nerve to parotid was 1.37±1.06 in the group with head coil combined with 3D-PSIF-DWI sequence,and the other...

Conclusion

The facial nerve trunk and branches of parotid gland section were displayed more clearly with micro surface coil combined with 3D-PSIF-DWI sequence scan than that with head coil. The display ratio and SIR (ratio of singnal intense) of facial nerve to parotid could be increased in the imagings with micro surface coil. It would have more extensive application in displaying the intraparotid facial nerve anatomy and paroid surgerywith micro surface coil.

References

Tsang JC,Yip WH,et al.Visualization of normalintra-parotid facial nerve on MR: BTFE or GRASS? Clin Radiol. 2009 Nov; 64(11):1115-8. Epub 2009 Jul 28. Takahashi N, Okamoto K,et al. High-resolution magnetic re- sonance of the extra-cranial facial nerve and parotid duct: demonstration of the branches of the intrap- arotid facial nerve and its relation to parotid tumours by MRI with a surface coil. Clin Radiol. 2005 Mar;60(3):349-54. Kraff O, Theysohn JM,,et al. High-resolution MRI of the human parotid gland and duct at7 Tesla. Invest Radiol. 2009 Sep;44(9):518-24....