Keywords: Cancer, Quantitative Imaging, rectal caner; staging
Motivation: Previous studies showed quantitative synthetic MRI (qsMRI) can predict pathological features of various tumors. However, its value for predicting rectal cancer (RC) stage and pathological characteristics remains unclear.
Goal(s): Investigating if qsMRI can predict pTN stage and pathological characteristics of RC.
Approach: 101 RC patients were enrolled. T1-relaxometry (T1RT), T2-relaxometry (T2RT), and proton density (PD) maps were obtained from qsMRI. The T1RT, T2RT and PD of lesion were analyzed.
Results: T1RT was significantly different between pT1-2 and pT3-4, and between pN0 and pN1-2. pN1-2 had significantly higher PD than pN0. The T1RT was significantly superior to subjective assessment for discriminating pN0 from pN1-2.
Impact: The standard MRI performs poorly in N staging. Our study showed qsMRI was significantly superior to subjective assessment for differentiating advanced N stage RC patients. Therefore, qsMRI may be used as non-invasive imaging technique for evaluating and managing RC patients.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Keywords