title: Value of MRI sequences for prediction of invasive breast carcinoma size.
abstract: BACKGROUND
  In this retrospective study, we compared transverse short tau inversion recovery (STIR), transverse diffusion-weighted imaging (DWI), apparent diffusion coefficient (ADC) map and first post-contrast fat-saturated fast low-angle shot (FLASH) 3D T1 with pathology results in terms of their accuracy in estimating breast carcinoma size.
  
  
  METHODS
  Magnetic resonance imaging data for 47 patients with invasive breast carcinoma, who were treated surgically, were reviewed. The longest dimension (LD) of the index lesion was measured using STIR, DWI, ADC map and first post-contrast FLASH 3D T1, and this was compared with the LD measured on the pathology specimen.
  
  
  RESULTS
  All four MRI sequences overestimated the LD by an average of about 1 mm with 95% limits of agreement approximately 0 to 2 mm. This is not considered to be clinically significant in tumours of 10 mm or larger.
  
  
  CONCLUSIONS
  Magnetic resonance imaging serves as an accurate tool in sizing breast carcinomas. ADC may be a useful evaluation tool for sizing carcinomas without requiring contrast material.
authors.affiliation: Department of Radiology, Ataturk University, School of Medicine, Erzurum, Turkey.
authors.forename: Irmak
authors.initials: I
authors.lastname: Durur-Subasi
authors.forename: Afak
authors.initials: A
authors.lastname: Durur-Karakaya
authors.forename: Adem
authors.initials: A
authors.lastname: Karaman
authors.forename: Elif
authors.initials: E
authors.lastname: Demirci
authors.forename: Fatih
authors.initials: F
authors.lastname: Alper
authors.forename: Elif
authors.initials: E
authors.lastname: Yılmazel-Ucar
authors.forename: Hamit
authors.initials: H
authors.lastname: Acemoglu
authors.forename: Mufide Nuran
authors.initials: MN
authors.lastname: Akcay
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000465:Algorithms; D001943:Breast Neoplasms / Q000473:pathology*; D038524:Diffusion Magnetic Resonance Imaging / Q000379:methods*; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D015203:Reproducibility of Results; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D047368:Tumor Burden
keywords: invasive breast carcinoma; magnetic resonance imaging; size