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1.
Value of whole breast magnetic resonance elastography added to MRI for lesion characterization 下载免费PDF全文
Corinne Balleyguier Aicha Ben Lakhdar Ariane Dunant Marie‐Christine Mathieu Suzette Delaloge Ralph Sinkus 《NMR in biomedicine》2018,31(1)
The purpose of this work was to assess the diagnostic value of magnetic resonance elastography (MRE) in addition to MRI to differentiate malignant from benign breast tumors, and the feasibility of performing MRE on the whole breast. MRE quantified biomechanical properties within the entire breast (50 slices) using an 11 min acquisition protocol at an isotropic image acquisition resolution of 2 × 2 × 2 mm3. Fifty patients were included. Finally, 43 patients (median age 52) with a suspect breast lesion detected by mammography and/or ultrasound were examined by MRI and MRE at 1.5 T. The viscoelastic parameters, i.e. elasticity (Gd), viscosity (Gl), the magnitude of the complex shear modulus , and the phase angle , were measured via MRE and correlated with MRI Breast Imaging—Reporting and Data System (BI‐RADS) score, histological type, and histological grade. Stroma component and angiogenesis were also correlated with viscoelastic properties. In the 43 lesions, Gd decreased and y increased with the MRI BI‐RADS score (pGd = 0.02, py = 0.002), whereas (Gl) and y were increased in malignant lesions (pGl = 0.045, py = 0.0004). The area under the curve increased from 0.84 for MRI BI‐RADS alone to 0.92 with the MRI BI‐RADS and y (AUC increase +0.08; 95% CI (?0.003; 0.16)). Lesion characterization using the y parameter increased the diagnostic accuracy. The phase angle y was found to have a significant role (p = 0.01) in predicting malignancy independently of the MRI BI‐RADS. Interestingly, histological analysis showed no correlation between viscoelastic parameters and percentage and type of stroma, CD34 quantification of vessels, or histological grade. The combination of MRE and MRI improves the diagnostic accuracy for breast lesions in the studied cohort. In particular, the phase angle y was found to have a significant role in predicting malignancy in addition to BI‐RADS. 相似文献
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Martine Piccart Laura J van 't Veer Coralie Poncet Josephine M N Lopes Cardozo Suzette Delaloge Jean-Yves Pierga Peter Vuylsteke Etienne Brain Suzan Vrijaldenhoven Peter A Neijenhuis Sylvian Causeret Tineke J Smilde Giuseppe Viale Annuska M Glas Mauro Delorenzi Christos Sotiriou Isabel T Rubio Sherko Kümmel Emiel J T Rutgers 《The lancet oncology》2021,22(4):476-488
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Saghatchian Mahasti Lacas Benjamin Charles Cécile Ghouadni Amal Clain Gabrielle Tergemina Boinon Diane Delaloge Suzette Vaz-Luis Ines Dauchy Sarah Amiel Philippe 《Quality of life research》2022,31(3):723-732
Quality of Life Research - Beauty care (BTC) is offered at many cancer hospitals having a great uptake among patients. Nevertheless, its benefits in the Quality of life (QoL) of cancer survivors... 相似文献
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Clarisse Dromain Fabienne Thibault Serge Muller Françoise Rimareix Suzette Delaloge Anne Tardivon Corinne Balleyguier 《European radiology》2011,21(3):565-574
Objective
To assess the diagnostic accuracy of Dual-Energy Contrast-Enhanced Digital Mammography (CEDM) as an adjunct to mammography (MX) versus MX alone and versus mammography plus ultrasound (US).Materials and methods
120 women with 142 suspect findings on MX and/or US underwent CEDM. A pair of low- and high-energy images was acquired using a modified full-field digital mammography system. Exposures were taken in MLO at 2 min and in CC at 4 min after the injection of 1.5 ml/kg of an iodinated contrast agent. One reader evaluated MX, US and CEDM images during 2 sessions 1 month apart. Sensitivity, specificity, and area under the ROC curve were estimated.Results
The results from pathology and follow-up identified 62 benign and 80 malignant lesions. Areas under the ROC curves were significantly superior for MX+CEDM than it was for MX alone and for MX+US using BI-RADS. Sensitivity was higher for MX+CEDM than it was for MX (93% vs. 78%; p?<?0.001) with no loss in specificity. The lesion size was closer to the histological size for CEDM. All 23 multifocal lesions were correctly detected by MX+CEDM vs. 16 and 15 lesions by MX and US respectively.Conclusion
Initial clinical results show that CEDM has better diagnostic accuracy than mammography alone and mammography+ultrasound. 相似文献8.
Dromain C Balleyguier C Adler G Garbay JR Delaloge S 《European journal of radiology》2009,69(1):34-42
CEDM is a recent development of digital mammography using the intra-venous injection of an iodinated contrast agent in conjunction with a mammography examination. Two techniques have been developed to perform CEDM examinations: the temporal subtraction technique with acquisition of high-energy images before and after contrast medium injection and the dual energy technique with acquisition of a pair of low and high-energy images only after contrast medium injection. The temporal subtraction technique offered the possibility to analyze the kinetic curve of enhancement of breast lesions, similarly to breast MRI. The dual energy technique do not provide information about the kinetic of tumor enhancement but allows the acquisition of multiples views of the same breast or bilateral examination and is less sensitive to patient motion than temporal CEDM. Initial clinical experience has shown the ability of CEDM to map the distribution of neovasculature induced by cancer using mammography. Moreover, previous studies have shown a superiority of MX+CEDM, either for the assessment of the probability of malignancy than for BIRADS assessment comparing to MX alone. The potential clinical applications are the clarification of mammographically equivocal lesions, the detection of occult lesions on standard mammography, particularly in dense breast, the determination of the extent of disease, the assessment of recurrent disease and the monitoring of the response to chemotherapy. CEDM should result in a simple way to enhance the detection and the characterization of breast lesions. 相似文献
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C Le Péchoux M C Le Deley S Delaloge E Lartigau C Levy-Piedbois S Bonvalot A Le Cesne G Missenard P Terrier D Vanel J Genin F Fontaine 《International journal of radiation oncology, biology, physics》1999,44(4):879-886
PURPOSE: This retrospective study was performed to evaluate two postoperative radiotherapy schedules in terms of dose, fractionation, and overall treatment time in soft tissue sarcoma (STS) of the extremities. METHODS AND MATERIALS: Between January 1984 and December 1993, 62 patients with newly diagnosed localized STS of the extremities were treated with maximal conservative surgery and postoperative radiotherapy (RT). Forty-five patients received 50 Gy with conventional fractionation plus a boost dose (5 to 20 Gy). Seventeen patients had hyperfractionated accelerated radiotherapy (HFART) up to a dose of 45 Gy in 3 weeks. RESULTS: With a median follow-up of 72 months, the 5-year local failure rate was 25%, the 5-year disease-free and overall survival rates were respectively 42% and 62%. The 3-year local relapse, disease-free, and overall survival rates were respectively 16%, 44%, and 70% in the conventional radiotherapy group, and 36%, 47%, and 82% in the HFART group (NS). No factor significantly influenced local control with a trend, however, in favor of conventional RT (p = 0.10). CONCLUSION: HFART at the dose of 45 Gy does not seem to be superior to the standard RT schedule, neither in terms of local control, survival, nor in terms of long-term side effects. However this dose could be considered too low as well as the power of comparison between the two groups to draw definitive conclusions. 相似文献
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Bourgier C Ghorbel I Heymann S Barhi M Mazouni C Al Ghuzlan AA Balleyguier C Marsiglia H Delaloge S 《Radiotherapy and oncology》2012,103(2):151-154
Even though tumor progression under neoadjuvant chemotherapy is uncommon, its locoregional management remains absolutely unclear. What is the best time for radical surgery or radiotherapy? "Rescue" chemo-radiotherapy could be a suitable radiosensitizing strategy to further reduce tumor progression and allow curative surgery while maintaining systemic therapy. 相似文献