Comparison between multi-slice spiral CT and magnetic resonance imaging in the diagnosis of peritoneal metastasis in primary ovarian carcinoma

Abstract

The advent of disease evaluation by means of multi-slice spiral computed tomography (MSCT) and magnetic resonance imaging (MRI) represents a continually emerging role in the evaluation of various diseases; however, its role is yet to be adequately defined. Thus, the aim of the study was to compare the diagnostic value of MSCT and MRI in the diagnosis of peritoneal metastasis in primary ovarian carcinoma. Between January 2013 and December 2015, MSCT or MRI data were collected from 42 patients who had been previously diagnosed with peritoneal metastasis of ovarian carcinoma at the First Affiliated Hospital of Kunming Medical University. The tumor location, size, edge, and shape were all evaluated independently by three qualified imaging physicians using a double-blind method to confirm whether the patients were indeed suffering from peritoneal metastasis, as well as to rank the metastatic lesions recorded on a five-point scale. It was hypothesized that MRI and MSCT were comparable in the evaluation of ovarian carcinoma. Therefore, a receiver operating characteristics (ROC) curve was used to analyze the results and also to directly compare the respective diagnostic values of MSCT and MRI. In total, 165 metastatic lesions were confirmed by means of surgical operation. MSCT revealed 131 metastatic lesions, while MRI confirmed 154 metastatic lesions. The metastatic sites were primarily located on the subphrenic, epiploon, and gastrocolic ligaments and were further confirmed by either MRI or CT. In regard to MSCT, the most common site of underdiagnoses was in the vicinity of the uterus–rectum–fossa. MRI displayed a high detection rate in every site. The omission diagnostic rate of MSCT and MRI were 20.61% and 6.67%, respectively, while the accuracy rates were 79.39% and 93.33%, respectively. The obtained results revealed that the MSCT value of area under the ROC curve was smaller than that for MRI. Our findings provided evidence asserting that MRI, in comparison to MSCT, was more accurate in diagnosing peritoneal metastasis in patients with ovarian carcinoma.

Multi-Slice Spiral Computed Tomography Image Features under Hybrid Iterative Reconstruction Algorithm in Staging Diagnosis of Bladder Cancer

“…The conclusion was that MRI was more valuable than MSCT in the diagnosis of prostate cancer at different stages [ 24 ]. There were two methods utilized to diagnose peritoneal metastases from primary ovarian cancer, and the results also indicated that MRI was more accurate in the diagnosis of peritoneal metastasis in ovarian cancer patients compared with multi-slice spiral CT [ 25 ]. However, it was not universal and may be more effective than other screening methods.…”

The Clinical Value of Multislice Spiral Computed Tomography in the Diagnosis of Upper Digestive Tract Diseases

“…The gas casting technique uses gas as a contrast agent, and after volume scanning, the CT value of the gas portion is completely opaque (transparency is 0), a special transparent reconstruction technique (Raysum) is used to display the inflated intestine, and the image is similar to double-contrast imaging of the gastrointestinal tract, as shown in Figure 1 . The advantage is that it is possible to observe not only the inside of the cavernous organ and the luminal wall but also the outside of the lumen and to show the general anatomy [ 19 ]. The disadvantages are the need to select the proper threshold, complete loss of information outside the threshold, unfavorable display of lesion details, and so on.…”

Multiparameter MRI Radiomics Model Predicts Preoperative Peritoneal Carcinomatosis in Ovarian Cancer

“…The radiological characteristics were selected according to the criteria of Guo HL et al. ( 15 ). Bilateral lesions were determined using the same pathological type according to the pathological surgical results; the largest tumor is finally selected for analysis.…”

“…Two radiologists with 3 and 15 years of experience in female pelvic MRI imaging, who were blind to the pathological results but knew whether the patient was diagnosed with EOC, reviewed the MRI images and recorded the following: (1) unilateral or bilateral ovarian tumors; (2) tumor size (the volume of the largest layer); (3) T2 signal (low and high signals were divided by the signal strength near the myometrium); (4) enhancement degree. The radiological characteristics were selected according to the criteria of Guo HL et al (15). Bilateral lesions were determined using the same pathological type according to the pathological surgical results; the largest tumor is finally selected for analysis.…”