Gastric Cancer
Conditions
Brief summary
Accurate staging is critical for effective gastric cancer treatment planning. Conventional DWI (C-DWI) has limitations in image quality due to magnetic field inhomogeneity, which hampers precise T staging. This study aims to compare the image quality and T staging accuracy of C-DWI, TSE-DWI, and ZOOMit-DWI (Z-DWI) sequences in MRI examinations of gastric cancer patients. A prospective study plan to enroll 72 gastric cancer patients undergoing preoperative MRI with C-DWI, TSE-DWI, and Z-DWI sequences using a 3.0 T scanner. Quantitative metrics (ADC, SNR, CNR) and image quality were evaluated. T staging accuracy was assessed by comparing MRI results with postoperative pathological staging using ROC analysis.
Interventions
DIAGNOSTIC_TESTScanning parameter
Based on abdominal scanning, TSE-DWI,ZOOMIT DWI and EPI-DWI scans were performed, and the study was divided into two steps according to the nanomotion criteria. The first step was self-controlled, which was divided into experimental group and control group. The experimental group included TSE-DWI,ZOOMit DWI, and the control group included EPI-DWI. Then the image quality was evaluated by subjective and objective evaluation indexes. In the second step, the three DWI stages were performed separately by four diagnosticians, with an interval of 1 month, and statistical analysis was performed at the end.
Sponsors
Yunnan Cancer Hospital
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
DIAGNOSTIC
Masking
DOUBLE (Subject, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
Yes
Inclusion criteria
1. The patient was diagnosed with gastric cancer by pathological biopsy 2. No biopsy was taken within 1 week before MR Examination to rule out the effect of bleeding on the image 3. No contraindications for MRI examination; And exclude serious heart, liver, kidney, cerebrovascular diseases.
Exclusion criteria
1. The image quality cannot meet the diagnostic criteria; 2. Patients could not tolerate MRI examination, resulting in incomplete MR-related sequence image data.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| T staging of gastric cancer | one year | Study on the value of three DWI scanning sequences in T staging of gastric cancer |
Countries
China
Contacts
Primary ContactLi Yanli, master
Backup ContactLi Zhenhui, MD
Outcome results
None listed