title: Shear Wave Elastography (SWE): An Analysis of Breast Lesion Characterization in 83 Breast Lesions.
abstract: Qualitative and quantitative shear wave elastography (SWE) criteria were assessed to differentiate between malignant and benign breast lesions. This prospective study included 83 lesions. SWE features measured included maximal stiffness values inside the lesion (E(lesion)) and in the peri-lesion area (E(perilesion)) and ratio values (R(lesion) and R(perilesion)) according to the formula E(lesion) or E(perilesion)/E(fat), with E(fat) corresponding to normal fatty tissue. We compared ultrasonography (B-mode), SWE and histologic sizes. With qualitative and quantitative SWE analysis, sensitivity was 94% and specificity 73%. Malignant lesions appeared more heterogeneous, with higher stiffness and ratio values than benign lesions (p < 0.001). For malignant lesions, SWE size was better correlated to histologic size than B-mode size. Using benign SWE signs to selectively downgrade category 4a and 4b lesions, the specificity improved from 13% to 51% without loss in sensitivity (100%) compared to ultrasound.
authors.affiliation: Women Medical Imaging Department, Jeanne de Flandre Hospital, Lille Nord University, Lille, France.
authors.forename: Alice
authors.initials: A
authors.lastname: Feldmann
authors.affiliation: Biostatistics Department, Lille Nord University, Lille, France.
authors.forename: Carole
authors.initials: C
authors.lastname: Langlois
authors.affiliation: Women Medical Imaging Department, Jeanne de Flandre Hospital, Lille Nord University, Lille, France.
authors.forename: Marion
authors.initials: M
authors.lastname: Dewailly
authors.affiliation: Women Medical Imaging Department, Jeanne de Flandre Hospital, Lille Nord University, Lille, France.
authors.forename: Elise Fréart
authors.initials: EF
authors.lastname: Martinez
authors.affiliation: Gynecology Department, Jeanne de Flandre Hospital, Lille Nord University, Lille, France.
authors.forename: Loic
authors.initials: L
authors.lastname: Boulanger
authors.affiliation: Pathology Department, Huriez Hospital, Lille Nord University, Lille, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Kerdraon
authors.affiliation: Women Medical Imaging Department, Jeanne de Flandre Hospital, Lille Nord University, Lille, France. Electronic address: faye.nath@gmail.com.
authors.forename: Nathalie
authors.initials: N
authors.lastname: Faye
mesh_terms: D000328:Adult; D001943:Breast Neoplasms / Q000145:classification / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D055119:Elastic Modulus; D054459:Elasticity Imaging Techniques / Q000379:methods*; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008875:Middle Aged; D015588:Observer Variation; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D033081:Shear Strength; D013314:Stress, Mechanical; D016217:Ultrasonography, Mammary / Q000379:methods*
keywords: Biopsy; Breast; Breast tumor; Diagnosis; Elasticity imaging techniques; Real-time shear wave elastography; Ultrasonography