scholarly journals Diagnosis of breast tumors by contrast-enhanced MR imaging: Comparison between the diagnostic performance of dynamic enhancement patterns and morphologic features

2007 ◽  
Vol 25 (1) ◽  
pp. 104-112 ◽  
Author(s):  
Mariko Goto ◽  
Hirotoshi Ito ◽  
Kentaro Akazawa ◽  
Takao Kubota ◽  
Osamu Kizu ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Diagnostic Performance ◽  
Breast Tumors ◽  
Contrast Enhanced ◽  
Dynamic Enhancement

Incidental focal solid liver lesions: diagnostic performance of contrast-enhanced ultrasound and MR imaging

2010 ◽  
Vol 20 (7) ◽  
pp. 1715-1725 ◽  
Author(s):  
Michael Soussan ◽  
Christophe Aubé ◽  
Stéphane Bahrami ◽  
Jérôme Boursier ◽  
Dominique Charles Valla ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Diagnostic Performance ◽  
Liver Lesions ◽  
Contrast Enhanced Ultrasound ◽  
Contrast Enhanced

Comparison of Imaging Strategies with Conditional Contrast-enhanced CT and Unenhanced MR Imaging in Patients Suspected of Having Appendicitis: A Multicenter Diagnostic Performance Study

Radiology ◽  
2013 ◽  
Vol 268 (1) ◽  
pp. 135-143 ◽  
Author(s):  
Marjolein M. N. Leeuwenburgh ◽  
Bart M. Wiarda ◽  
Marinus J. Wiezer ◽  
Bart C. Vrouenraets ◽  
Jan Willem C. Gratama ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Diagnostic Performance ◽  
Performance Study ◽  
Contrast Enhanced Ct ◽  
Contrast Enhanced ◽  
Enhanced Ct

scholarly journals MR imaging in discriminating between benign and malignant paediatric ovarian masses: a systematic review

2019 ◽  
Vol 30 (2) ◽  
pp. 1166-1181 ◽  
Author(s):  
Lotte W. E. van Nimwegen ◽  
Annelies M. C. Mavinkurve-Groothuis ◽  
Ronald R. de Krijger ◽  
Caroline C. C. Hulsker ◽  
Angelique J. Goverde ◽  
...  
Keyword(s):  
Systematic Review ◽  
Mr Imaging ◽  
Children And Adolescents ◽  
Diffusion Weighted Imaging ◽  
Diagnostic Performance ◽  
Imaging Techniques ◽  
Ovarian Mass ◽  
Dynamic Contrast Enhanced ◽  
Contrast Enhanced ◽  
Ovarian Masses

Abstract Objectives The use of magnetic resonance (MR) imaging in differentiation between benign and malignant adnexal masses in children and adolescents might be of great value in the diagnostic workup of sonographically indeterminate masses, since preserving fertility is of particular importance in this population. This systematic review evaluates the diagnostic value of MR imaging in children with an ovarian mass. Methods The review was made according to the PRISMA Statement. PubMed and EMBASE were systematically searched for studies on the use of MR imaging in differential diagnosis of ovarian masses in both adult women and children from 2008 to 2018. Results Sixteen paediatric and 18 adult studies were included. In the included studies, MR imaging has shown good diagnostic performance in differentiating between benign and malignant ovarian masses. MR imaging techniques including diffusion-weighted imaging (DWI) and dynamic contrast-enhanced (DCE) imaging seem to further improve the diagnostic performance. Conclusion The addition of DWI with apparent diffusion coefficient (ADC) values measured in enhancing components of solid lesions and DCE imaging may further increase the good diagnostic performance of MR imaging in the pre-operative differentiation between benign and malignant ovarian masses by increasing specificity. Prospective age-specific studies are needed to confirm the high diagnostic performance of MR imaging in children and adolescents with a sonographically indeterminate ovarian mass. Key Points • MR imaging, based on several morphological features, is of good diagnostic performance in differentiating between benign and malignant ovarian masses. Sensitivity and specificity varied between 84.8 to 100% and 20.0 to 98.4%, respectively. • MR imaging techniques like diffusion-weighted imaging (DWI) and dynamic contrast-enhanced (DCE) imaging seem to improve the diagnostic performance. • Specific studies in children and adolescents with ovarian masses are required to confirm the suggested increased diagnostic performance of DWI and DCE in this population.

scholarly journals Pretherapeutic Assessment of Pancreatic Cancer: Comparison of FDG PET/CT Plus Delayed PET/MR and Contrast-Enhanced CT/MR

2022 ◽  
Vol 11 ◽  
Author(s):  
Zaizhu Zhang ◽  
Nina Zhou ◽  
Xiaoyi Guo ◽  
Nan Li ◽  
Hua Zhu ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Mr Imaging ◽  
Liver Metastases ◽  
Fdg Pet ◽  
Diagnostic Performance ◽  
Whole Body ◽  
Contrast Enhanced ◽  
Pet Ct ◽  
N Stage ◽  
Fdg Pet Ct

PurposeThis study aims to determine the diagnostic performance of whole-body FDG PET/CT plus delayed abdomen PET/MR imaging in the pretherapeutic assessment of pancreatic cancer in comparison with that of contrast-enhanced (CE)-CT/MR imaging.Materials and MethodsForty patients with pancreatic cancer underwent nonenhanced whole-body FDG PET/CT, delayed abdomen PET/MR imaging, and CE-CT/MR imaging. Two nuclear medicine physicians independently reviewed these images and discussed to reach a consensus, determining tumor resectability according to a 5-point scale, N stage (N0 or N positive), and M stage (M0 or M1). With use of clinical-surgical-pathologic findings as the reference standard, diagnostic performances of the two imaging sets were compared by using the McNemar test.ResultsThe diagnostic performance of FDG PET/CT plus delayed PET/MR imaging was not significantly different from that of CE-CT/MR imaging in the assessment of tumor resectability [area under the receiver operating characteristic curve: 0.927 vs. 0.925 (p = 0.975)], N stage (accuracy: 80% (16 of 20 patients) vs. 55% (11 of 20 patients), p = 0.125), and M stage (accuracy: 100% (40 of 40 patients) vs. 93% (37 of 40 patients), p = 0.250). Moreover, 14 of 40 patients had liver metastases. The number of liver metastases detected by CE-CT/MR imaging, PET/CT, and PET/MR imaging were 33, 18, and 61, respectively. Compared with CE-CT/MR imaging, PET/MR imaging resulted in additional findings of more liver metastases in 9/14 patients, of which 3 patients were upstaged. Compared with PET/CT, PET/MR imaging resulted in additional findings of more liver metastases in 12/14 patients, of which 6 patients were upstaged.ConclusionsAlthough FDG PET/CT plus delayed PET/MR imaging showed a diagnostic performance similar to that of CE-CT/MR imaging in the pretherapeutic assessment of the resectability and staging of pancreatic tumors, it still has potential as the more efficient and reasonable work-up approach for the additional value of metastatic information provided by delayed PET/MR imaging.

Sign in / Sign up

Export Citation Format

Share Document