Most MRIs are performed without a contrast dye because it isn't needed to get accurate results for the suspected problem. Also, certain patients (those who are pregnant as well as those withkidney disease) shouldn't get the contrast dye because of possible complications. What Is an MRI Scan ...
After the completion of your imaging exam, either your body absorbs the contrast material, or you eliminate it through your urine. Not every MRI requires using a contrast agent. MRIs with and without contrast are both effective, and your doctor will determine which scan you need based on your...
TR/TE = 5.9/3.0 ms, flip angle = 10°, acceleration factor = 2 (R/L) × 2 (F/H), number of signal averages = 1, scan time = 3:00 minute. Four phases are acquired with 1 phase acquired before contrast injection and 3 phases after contrast injection with first post-contrast scan...
For T2 MRI inactive PPy nanoparticles, paramagnetic polarons are block from water protons by strong “spin–spin” interactions between polarons. For PPy nanoparticles with weak T2 MRI contrast, above interactions are moderately reduced by catechol derivatives used in “partially complexed” method. Fo...
A total of 107 patients, 93 with follow-up (68 steroid treated), were included; 101 patients had enhancement of the affected optic nerve and no unaffected nerve enhanced. The baseline visual performance was similar between nerves with and without enhancement. Optic nerves with enhancement in the...
TRICKS--时间分辨的增强动力学成像(Time-Resolved Imaging of Contrast KineticS),能通过造影剂血液动力学进行全身的动态增强扫描。具有更高的时间分辨率,进一步避免静脉污染。 医影课程广告 1、医影2025放射医师中级(344)学习安排 2、医影2025放射技术(士师主管)考试培训计划 ...
A new MRI contrast agent may provide a viable non-invasive alternative for the detection of interstitial cystitis, according to preliminary research presented at the 5th International Consultation on Interstitial Cystitis Japan (ICICJ) in Kyoto, Japan. ...
This study included primary operable breast cancer patients who received preoperative PET/CT (with or without breast MRI) for staging and underwent an upfront therapeutic surgery at Changhua Christian Hospital (CCH), a tertiary medical center in Taiwan, from January 2001 to December 2022. The exclu...
imaging diagnosis of new technology in the early 1980s. It has no ionizing radiation (radiation) damage; Non-skeletal pseudo shadow; Multi-parameter imaging with multiple directions (transverse, coronal, sagittal plane, etc.); Height of soft tissue resolution; There is no need to use contrast ...
(pre-contrast in the axial and sagittal planes; post-contrast at 30 s, 60 s and 120 s in the sagittal and 180 s in the axial plane). Table 1 Imaging protocol for patients. Full size table Image analysis Two experienced radiologists, Gu and Zhang (with 8 and 10 years of experience ...