A Srinivasan1, R Dvorak, S Rohrer, S K Mukherji. 1. Department of Radiology, Division of Neuroradiology, University of Michigan Health System, Ann Arbor, Michigan 48109, USA. ashoks@med.umich.edu
Abstract
BACKGROUND: With the increased clinical use of 3-Tesla (3T) magnets, it becomes important to identify the potential applications of advanced magnetic resonance (MR) imaging techniques such as diffusion-weighted imaging in head and neck pathologies. PURPOSE: To establish the 3T apparent diffusion coefficient (ADC) values for normal neck structures, and to examine the utility of ADC values in distinguishing head and neck squamous cell carcinomas (HNSCC) from normal neck anatomy. MATERIAL AND METHODS: 3T diffusion-weighted imaging was performed on 10 normal volunteers and 10 patients with known HNSCC. In the volunteers, mean ADC was calculated in the parotid gland, submandibular gland, base of the tongue, pterygoid muscle, masseter muscle, paraspinal muscles, true vocal cord, thyroid gland, thyroid cartilage, cricoid cartilage, and lymph nodes. The mean tumor ADC value was calculated from the 10 patients with HNSCC and compared with the normal ADC values from various neck structures. RESULTS: The mean ADC value measured in the HNSCC was 1.101 (+/-0.214) x 10(-3) mm(2)/s. This was significantly lower than ADC values of paraspinal muscles, pterygoid muscle, masseter muscle, thyroid gland, and base of the tongue (P=0.0006, 0.0002, 0.0001, 0.001, and 0.002, respectively). The tumor ADC values were not significantly different from ADC values of parotid and submandibular glands (P=0.057 and 0.14, respectively). CONCLUSION: 3T ADC values show potential for distinguishing HNSCC from normal extracranial head and neck structures.
BACKGROUND: With the increased clinical use of 3-Tesla (3T) magnets, it becomes important to identify the potential applications of advanced magnetic resonance (MR) imaging techniques such as diffusion-weighted imaging in head and neck pathologies. PURPOSE: To establish the 3T apparent diffusion coefficient (ADC) values for normal neck structures, and to examine the utility of ADC values in distinguishing head and neck squamous cell carcinomas (HNSCC) from normal neck anatomy. MATERIAL AND METHODS: 3T diffusion-weighted imaging was performed on 10 normal volunteers and 10 patients with known HNSCC. In the volunteers, mean ADC was calculated in the parotid gland, submandibular gland, base of the tongue, pterygoid muscle, masseter muscle, paraspinal muscles, true vocal cord, thyroid gland, thyroid cartilage, cricoid cartilage, and lymph nodes. The mean tumor ADC value was calculated from the 10 patients with HNSCC and compared with the normal ADC values from various neck structures. RESULTS: The mean ADC value measured in the HNSCC was 1.101 (+/-0.214) x 10(-3) mm(2)/s. This was significantly lower than ADC values of paraspinal muscles, pterygoid muscle, masseter muscle, thyroid gland, and base of the tongue (P=0.0006, 0.0002, 0.0001, 0.001, and 0.002, respectively). The tumor ADC values were not significantly different from ADC values of parotid and submandibular glands (P=0.057 and 0.14, respectively). CONCLUSION: 3T ADC values show potential for distinguishing HNSCC from normal extracranial head and neck structures.
Authors: Julia Fruehwald-Pallamar; Christian Czerny; Marius E Mayerhoefer; Benjamin S Halpern; Christina Eder-Czembirek; Markus Brunner; Matthias Schuetz; Michael Weber; Laura Fruehwald; Andreas M Herneth Journal: Eur J Nucl Med Mol Imaging Date: 2011-04-05 Impact factor: 9.236
Authors: Craig J Galbán; Suresh K Mukherji; Thomas L Chenevert; Charles R Meyer; Daniel A Hamstra; Peyton H Bland; Timothy D Johnson; Bradford A Moffat; Alnawaz Rehemtulla; Avraham Eisbruch; Brian D Ross Journal: Transl Oncol Date: 2009-08-18 Impact factor: 4.243
Authors: Arthur Varoquaux; Olivier Rager; Karl-Olof Lovblad; Karen Masterson; Pavel Dulguerov; Osman Ratib; Christoph D Becker; Minerva Becker Journal: Eur J Nucl Med Mol Imaging Date: 2013-02-22 Impact factor: 9.236