PURPOSE: To compare dynamic contrast material-enhanced subtraction and T2-weighted spin-echo (SE) magnetic resonance (MR) imaging in the differentiation of fibrosis from tumor recurrence during the follow-up of treated gynecologic pelvic malignancy. MATERIALS AND METHODS: Thirty-four patients (aged 24-82 years) with 18 benign and 35 malignant lesions confirmed by means of surgery (n = 18), biopsy (n = 25), or 18-month follow-up examination (n = 10) underwent dynamic contrast-enhanced subtraction and T2-weighted SE MR imaging. Contrast material enhancement of an abnormal pelvic structure within the first 90 seconds on dynamic contrast-enhanced subtraction images or high signal intensity on T2-weighted SE images was considered indicative of malignancy. RESULTS: The sensitivity, specificity, accuracy, and positive and negative predictive values were 91%, 67%, 83%, 86%, and 86%, respectively, for dynamic contrast-enhanced subtraction imaging and 91%, 22%, 68%, 70%, and 57%, respectively, for T2-weighted SE imaging. More lesions were correctly classified with dynamic contrast-enhanced subtraction imaging than with T2-weighted SE imaging (P < .01). CONCLUSION: Dynamic contrast-enhanced subtraction imaging is more accurate than T2-weighted SE imaging for differentiating fibrosis from tumor recurrence during the follow-up of treated gynecologic pelvic malignancy. However, use of both sequences is recommended.
PURPOSE: To compare dynamic contrast material-enhanced subtraction and T2-weighted spin-echo (SE) magnetic resonance (MR) imaging in the differentiation of fibrosis from tumor recurrence during the follow-up of treated gynecologic pelvic malignancy. MATERIALS AND METHODS: Thirty-four patients (aged 24-82 years) with 18 benign and 35 malignant lesions confirmed by means of surgery (n = 18), biopsy (n = 25), or 18-month follow-up examination (n = 10) underwent dynamic contrast-enhanced subtraction and T2-weighted SE MR imaging. Contrast material enhancement of an abnormal pelvic structure within the first 90 seconds on dynamic contrast-enhanced subtraction images or high signal intensity on T2-weighted SE images was considered indicative of malignancy. RESULTS: The sensitivity, specificity, accuracy, and positive and negative predictive values were 91%, 67%, 83%, 86%, and 86%, respectively, for dynamic contrast-enhanced subtraction imaging and 91%, 22%, 68%, 70%, and 57%, respectively, for T2-weighted SE imaging. More lesions were correctly classified with dynamic contrast-enhanced subtraction imaging than with T2-weighted SE imaging (P < .01). CONCLUSION: Dynamic contrast-enhanced subtraction imaging is more accurate than T2-weighted SE imaging for differentiating fibrosis from tumor recurrence during the follow-up of treated gynecologic pelvic malignancy. However, use of both sequences is recommended.
Authors: Corinne Balleyguier; E Sala; T Da Cunha; A Bergman; B Brkljacic; F Danza; R Forstner; B Hamm; R Kubik-Huch; C Lopez; R Manfredi; J McHugo; L Oleaga; K Togashi; K Kinkel Journal: Eur Radiol Date: 2010-11-10 Impact factor: 5.315
Authors: Yulia Lakhman; Stephanie Nougaret; Maura Miccò; Chiara Scelzo; Hebert A Vargas; Ramon E Sosa; Elizabeth J Sutton; Dennis S Chi; Hedvig Hricak; Evis Sala Journal: Radiographics Date: 2015 Jul-Aug Impact factor: 5.333
Authors: J Y Lee; K L Cheng; J H Lee; Y J Choi; H W Kim; Y S Sung; S R Chung; K H Ryu; M S Chung; S Y Kim; S-W Lee; J H Baek Journal: AJNR Am J Neuroradiol Date: 2019-07-18 Impact factor: 3.825
Authors: C S Gardner; J Sunil; A H Klopp; C E Devine; T Sagebiel; C Viswanathan; P R Bhosale Journal: Br J Radiol Date: 2015-05-12 Impact factor: 3.039