OBJECTIVES: The aim of this study was to compare apparent diffusion coefficient (ADC) values from diffusion-weighted MRI (DWI) among normal salivary glands, cases with sialadenitis and cases with pleomorphic adenoma of major salivary glands. METHODS: 22 patients (totalling 44 major salivary glands) diagnosed with either unilateral sialadenitis (on either parotid or submandibular gland) or parotid gland pleomorphic adenoma were selected. Contralateral non-affected glands (normal) were also analyzed. DW images were achieved using a spin-echo pulse sequence with a 1.5-T MRI device. Mean ADC values were compared among the three groups analyzed (contralateral normal glands, sialadenitis and pleomorphic adenoma). RESULTS: The mean ADC values were significantly higher in cases of parotid sialadenitis (p = 0.001), but not in cases of submandibular sialadenitis (p = 0.466), as compared with the contralateral non-affected glands. Cases of pleomorphic adenoma presented the highest ADC values of the study. In addition, one-way ANOVA test revealed a significant difference among the three groups of parotid glands analyzed. CONCLUSIONS: Within the limitations of this study, the present results suggest that DWI allows for differentiation between parotid sialadenitis and pleomorphic adenoma.
OBJECTIVES: The aim of this study was to compare apparent diffusion coefficient (ADC) values from diffusion-weighted MRI (DWI) among normal salivary glands, cases with sialadenitis and cases with pleomorphic adenoma of major salivary glands. METHODS: 22 patients (totalling 44 major salivary glands) diagnosed with either unilateral sialadenitis (on either parotid or submandibular gland) or parotid gland pleomorphic adenoma were selected. Contralateral non-affected glands (normal) were also analyzed. DW images were achieved using a spin-echo pulse sequence with a 1.5-T MRI device. Mean ADC values were compared among the three groups analyzed (contralateral normal glands, sialadenitis and pleomorphic adenoma). RESULTS: The mean ADC values were significantly higher in cases of parotid sialadenitis (p = 0.001), but not in cases of submandibular sialadenitis (p = 0.466), as compared with the contralateral non-affected glands. Cases of pleomorphic adenoma presented the highest ADC values of the study. In addition, one-way ANOVA test revealed a significant difference among the three groups of parotid glands analyzed. CONCLUSIONS: Within the limitations of this study, the present results suggest that DWI allows for differentiation between parotidsialadenitis and pleomorphic adenoma.
Authors: L Aghaghazvini; F Salahshour; N Yazdani; H Sharifian; S Kooraki; M Pakravan; M Shakiba Journal: Dentomaxillofac Radiol Date: 2014-10-09 Impact factor: 2.419
Authors: C R Habermann; C Arndt; J Graessner; L Diestel; K U Petersen; F Reitmeier; J O Ussmueller; G Adam; M Jaehne Journal: AJNR Am J Neuroradiol Date: 2009-01-08 Impact factor: 3.825
Authors: Fernando Antonio Reis Laurino; Isabela Goulart Gil Choi; Jun Ho Kim; Ivan Onone Gialain; Renato Ferraço; Rainer Guilherme Haetinger; Otavio Henrique Pinhata-Baptista; Reinaldo Abdala-Junior; Claudio Costa; Arthur Rodriguez Gonzalez Cortes Journal: Imaging Sci Dent Date: 2020-06-18