title: Evaluation of pituitary microadenomas with dynamic MR imaging.
abstract: OBJECTIVE
  To evaluate the use of keyhole dynamic magnetic resonance (MR) imaging in the evaluation of women with borderline hyperprolactinemia.
  
  
  METHODS
  We investigated 30 patients (mean age 31.6+/-4.3 years) with moderate hyperprolactinemia and clinically suspected microadenomas on T1-weighted spin echo (SE) sequences (repetition time (TR)/echo time (TE) 625/15 ms) with keyhole dynamic imaging and contrast enhancement of the pituitary gland. The probability of lesion presence according to MR criteria was ranked on a five-grade scale and compared with standard examinations of the hypophysis before and after intravenous administration of contrast media.
  
  
  RESULTS
  The probability for lesion presence showed a trend toward lower scores on standard SE sequences and higher scores with dynamic imaging (P=0.067).
  
  
  CONCLUSIONS
  Dynamic keyhole imaging of the pituitary gland could help establish a diagnosis of microadenomas with a higher probability.
authors.affiliation: Department of Radiology, University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria. thomas.rand@univie.ac.at
authors.forename: Thomas
authors.initials: T
authors.lastname: Rand
authors.forename: P
authors.initials: P
authors.lastname: Lippitz
authors.forename: E
authors.initials: E
authors.lastname: Kink
authors.forename: H
authors.initials: H
authors.lastname: Huber
authors.forename: B
authors.initials: B
authors.lastname: Schneider
authors.forename: H
authors.initials: H
authors.lastname: Imhof
authors.forename: S
authors.initials: S
authors.lastname: Trattnig
mesh_terms: D000236:Adenoma / Q000150:complications / Q000175:diagnosis*; D000328:Adult; D005260:Female; D006801:Humans; D006966:Hyperprolactinemia / Q000175:diagnosis* / Q000209:etiology; D008279:Magnetic Resonance Imaging / Q000379:methods*; D010902:Pituitary Gland / Q000473:pathology; D010911:Pituitary Neoplasms / Q000150:complications / Q000175:diagnosis*