Clinical validity of non-contrast-enhanced VI-RADS: prospective study using 3-T MRI with high-gradient magnetic field

• DOI: 10.1007/s00330-022-08813-4
• Publication Date: 2022-05-12T12:06:05Z
• Authors: Masanaka Watanabe; Satoru Taguchi; Haruhiko Machida; Mitsuhiro Tambo; Yuhei Takeshita; Toshiya Kariyasu; Keita Fukushima; Yuta Shimizu; Takatsugu Okegawa; Hiroshi Fukuhara; Kenichi Yokoyama
• Keywords: Neuroradiology; Interventional radiology

To develop a modified Vesical Imaging Reporting and Data System (VI-RADS) without dynamic contrast-enhanced imaging (DCEI), termed "non-contrast-enhanced VI-RADS (NCE-VI-RADS)", to assess the additive impact of denoising deep learning reconstruction (dDLR) on NCE-VI-RADS.From January 2019 through December 2020, 163 participants who underwent high-gradient 3-T MRI bladder were prospectively enrolled. In total, 108 with pathologically confirmed cancer by transurethral resection analyzed. Tumors evaluated based (scores 1-5) two readers independently: an experienced radiologist (reader 1) senior radiology resident 2). Conventional assessment included all three types (T2-weighted [T2WI], diffusion-weighted [DWI], [DCEI]). Also NCE-VI-RADS comprising only non-contrast-enhanced (T2WI DWI), "NCE-VI-RADS dDLR" T2WI processed dDLR DWI. All systems assessed using receiver-operating characteristic curve analysis simple and/or weighted κ statistics.Muscle invasion was identified in 23/108 (21%). Area under (AUC) values for diagnosing muscle as follows: conventional VI-RADS, 0.94 0.91; NCE-VI-RADS, 0.93 dDLR", 0.96 0.93, 1 2, respectively. Simple statistics indicated substantial agreement almost perfect between readers.NCE-VI-RADS achieved predictive accuracy comparable that VI-RADS. Additional use improved diagnostic NCE-VI-RADS.• Non-contrast-enhanced (NCE-VI-RADS) developed avoid risk related gadolinium-based contrast agent administration. • had The additional might further improve NCE-VI-RADS.