Article Figures & Data
Figures
- Fig 1.
Case 11 with adenoid cystic carcinoma in the right masticator space. Axial T2-weighted image (A) demonstrates that the lesion with high signal intensity is located in the right medial masticator space. The MR spectrum (B) shows a distinct Cho peak at 3.2 ppm. The lipid signals are visible at 0.9–1.5 ppm.
- Fig 2.
Case 15 with rhabdomyosarcoma in the right parotid gland and masticator space. Axial T1-weighted image (A) demonstrates the lesion with intermediate signal intensity in the right parotid gland and masticator space. On the MR spectrum (B), both Cho peak (arrow) and Cr peak (arrowhead) present at 3.2 and 3.0 ppm, respectively.
- Fig 3.
Case 1 with a chronic inflammatory lesion in the right masticator space. Axial T1-weighted image (A) demonstrates that the lesion with isointense signal intensity is located in the right medial masticator space. The box of VOI is positioned in the lesion of the right medial masticator space, and there are no Cho signals present on the spectrum (B). The lipid signals are shown at 0.9–1.5 ppm.
Tables
Single-voxel 1H-MR spectroscopic findings of chronic infections and malignant tumors in the masticator space
Case No./Sex/Age Origin Pathology VOI (cm3) Cho Signal Cho Signal-to-Noise Ratio 1/F/29 Unknown Chronic infection 8.00 – N/A 2/M/42 Unknown Chronic infection 8.39 – N/A 3/M/26 Odontogenic Chronic infection 11.73 + 2.50 4/M/16 Mandible Chronic infection 13.29 – N/A 5/F/71 Mandible Chronic infection 6.62 + 2.46 6/M/3 Odontogenic Chronic infection 10.48 + 2.13 7/F/11 Mandible Chronic infection 5.52 + 2.15 8/M/49 Unknown Adenoid cystic carcinoma 8.00 + 6.49 9/F/49 Maxillary sinus Adenoid cystic carcinoma 6.74 + 2.50 10/M/39 Maxillary sinus Adenoid cystic carcinoma 6.11 + 4.88 11/M/22 Unknown Adenoid cystic carcinoma 7.74 + 11.84 12//M/70 Unknown Adenocarcinoma 12.48 + 3.47 13/M/82 Metastasis Adenocarcinoma 4.17 + 3.40 14/F/49 Parotid gland Mucoepithelial carcinoma 10.11 + 7.20 15/M/29 Parotid gland Rhabdomyosarcoma 18.35 + 11.08 16/M/33 Unknown Rhabdomyosarcoma 5.12 + 4.95 17/M/57 Unknown Fibrosarcoma 7.83 + 2.22 18/M/46 Unknown Myxofibrosarcoma 7.63 + 3.96 19/M/32 Mandible Malignant fibrous histiocytoma 7.99 + 2.30 20/M/20 Unknown Synovial sarcoma 7.76 + 10.25 21/F/34 Unknown Squamous cell carcinoma 8.00 + 10.64 22/M/51 Oropharynx Squamous cell carcinoma 10.58 + 5.44 23/M/49 Maxillary sinus Squamous cell carcinoma 17.62 + 2.74 24/M/70 Soft palate Squamous cell carcinoma 7.88 + 4.56 Note:—N/A indicates not available for measurement; VOI, volume of interest.
