Gadolinium-enhanced dynamic magnetic resonance imaging with endorectal coil for local staging of rectal cancer

Abstract

Our criteria for Gd-enhanced dynamic MRI were effective for T3 stage tumors.

The middle rectal artery detected by contrast-enhanced magnetic resonance imaging predicts lateral lymph node metastasis in lower rectal cancer

“…For the preoperative evaluation of lower rectal cancer, high-resolution T2-weighted turbo spin-echo images are generally used for assessing the depth of tumor invasion, circumferential resection margin, and lymph node metastasis [ 28 , 29 ]. In addition, gadolinium-enhanced and multiparametric MRI is used for staging the T status and evaluation of the efficacy of preoperative treatment [ 30 , 31 ]. Since T1-weighted gradient-echo sequences can counteract the effects of adipose tissue and calcification in the mesorectum, ceMRI reveals a satisfactory performance for the identification of MRAs.…”

Colorectal carcinoma: Ex vivo evaluation using q‐space imaging; Correlation with histopathologic findings

“…Conventional MRI has reportedly been used to stage CRC before surgery using multichannel phased‐array coils, parallel imaging methods, and more powerful gradient systems . Moreover, endoluminal MRI with endoluminal coils has been used for staging of rectal carcinomas . Hence, these novel techniques will allow the performance of QSI for preoperative evaluation of CRC.…”

“…[10][11][12][13][14][15] Moreover, endoluminal MRI with endoluminal coils has been used for staging of rectal carcinomas. [16][17][18][19] Hence, these novel techniques will allow the performance of QSI for preoperative evaluation of CRC.…”

“…CRC staging before surgery is presently based on the findings of computed tomography (CT) and endoscopic ultrasound (EUS), even though it is not possible to accurately assess the HG and extent of LNM by imaging alone because CT has poor soft‐tissue contrast and nonspecific size criteria, and EUS is limited by technical inadequacies to detect stenotic tumors, extraordinary operator reliance, interface echoes caused by artifacts, and an inadequate sonographic range . Although conventional magnetic resonance imaging (MRI) is an alternative to CT and EUS, this method is insufficient to assess the HG and extent of LNM in CRC …”

“…[5][6][7] Although conventional magnetic resonance imaging (MRI) is an alternative to CT and EUS, 8,9 this method is insufficient to assess the HG and extent of LNM in CRC. [10][11][12][13][14][15][16][17][18][19] Overall, current diagnostic procedures for the diagnosis of CRC are relatively limited. To overcome these limitations, Yamada et al 20,21 recently reported that non-Gaussian q-space imaging (QSI) was suitable for ex vivo assessment of the HG and extent of LNM in esophageal and gastric carcinomas.…”