RESUMO
Background: diffusion-weighted magnetic resonance imaging [DW-MRI] permits non-invasive assessment of tumor characteristics
Aim of the work: this study was aimed to emphasize the role of DWI in assessing aggressiveness of rectal cancer with the histopathological correlation
Patients and methods: this was a prospective study that included thirty patients with histopathological proved rectal carcinoma referred from the Surgical Department, Ain Shams University Hospitals to the MRI Radiology Unit for Rectal Cancer Staging. Pelvic MRI study with conventional sequences and DWI were performed
Results: 81% of moderately differentiated adenocarcinoma [ADC] [grade II] showed restricted diffusion with low signals in ADC sequence, while none of the poorly differentiated adenocarcinoma [grade III] showed restricted diffusion with high signals in ADC sequence [T2 shin-through]. There was a high statistically significant difference in characterization of poorly [grade III] and moderately differentiated adenocarcinomas [grade II]
Conclusion: significant correlations were detected between mean ADC values and differentiation grade. ADC may be useful as an imaging tool for re-staging of tumor aggressiveness, but it cannot serve as an independent tool for primary staging of rectal cancer
RESUMO
Background: Recent developments in diagnostic imaging techniques have magnified the role and potential of MRI in female pelvic imaging. Functional imaging by means of diffusion weighted magnetic resonance imaging [DW-MRI] is now part of the standard imaging protocols for evaluation of the female pelvis
Objective: This study aimed to highlight the role of Diffusion Weighted MRI in tumor grading noninvasively prior to surgery
Methodology: This study carried out in Radiology Department of Ain Shams University Hospitals. This study included 20 patients. All patients were subjected to careful history taking, Histologic diagnosis of endometrial carcinoma and pelvic MRI was done
Result: The difference between the mean ADC values of high grade and low grade endometrial carcinoma was significant
Conclusion: MRI is accurate in assessing the depth of myometrial invasion and cervical extension, allowing for selective lymphadenectomy, with higher accuracy measures for Diffusion Weighted MRI than for Dynamic Contrast Enhanced MRI in both lesion characterization and staging
RESUMO
Objective: Is to study the role of multi-parametric MRI including the novel sequences, diffusion weighted images [DWI] in the characterization of ovarian cystic lesions
Methodology: This study carried out in MRI unit, Radiology Department of Ain Shams University Hospitals. 20 patients with pathologically proven nature of ovarian cyst underwent pelvic MRI examination including diffusion weighted imaging [DWI] and apparent diffusion coefficient [ADC]
Result: Diffusion weighted imaging [DWI] and apparent diffusion coefficient [ADC] to detect nature of ovarian cysts can't be carried alone but need to be combined by conventional and DCE MRI