ACOUSTIC RADIATION FORCE IMPULSE IMAGING FOR REACTIVE AND MALIGNANT/METASTATIC CERVICAL LYMPH NODES

作者：Fujiwara Takashi^*; Tomokuni Junko; Iwanaga Ken; Ooba Susumu; Haji Tomoyuki

来源：Ultrasound in Medicine and Biology, 2013, 39(7): 1178-1183.

DOI：10.1016/j.ultrasmedbio.2013.02.001

• Head and neck cancer
• Shear wave velocity
• Acoustic radiation force impulse imaging
• Virtual touch tissue quantification
• Cervical lymph node

The aim of this study was to compare lymph node stiffness using acoustic radiation force impulse (ARFI) imaging in patients with cervical lymph node swelling. Forty-two cervical lymph nodes ( reactive, n = 22; metastatic, n = 20) from 19 patients ( 13 men, 6 women; mean age, 63.68 +/- 14.9 y; range, 23-85 y) were examined between September 2011 and March 2012. The shear wave velocity ( SWV, m/s) of each lymph node was evaluated by ARFI imaging. SWV of reactive lymph nodes was 1.52 +/- 0.48 m/s, and that of metastatic/malignant lymph nodes was 2.46 +/- 0.75 m/s. A SWV %26gt; 1.9 m/s was very useful metastatic lymph node classification, with 95.0% specificity, 81.8% sensitivity and 88.0% overall accuracy. The area under the receiver operating characteristic curve was 0.923 (95% confidence interval, 0.842-1.000). ARFI imaging can be useful in the differentiation of reactive and malignant/metastatic cervical lymph nodes. (E-mail: t.fujiwarabi@gmail.

• 出版日期2013-7