A definition was proposed for each term; debate followed, and the committee reached consensus. Potential controversies were raised, with formulated recommendations. The committee arrived at consensus definitions for cellulitis, soft tissue abscess, and necrotizing infection, while discouraging the nonspecific...
(A) Axial CT image in bone window obtained at an outside hospital demonstrated a lytic abnormality (white arrow) in the sternum. (B) Coronal STIR image from WB-MRI reveals a focal hyperintensity (white arrow) within the sternum, which was difficult to appreciate in the coronal plane due ...
PULSE SEQUENCES SE, GE, IR, STIR, FSE, 3D CE, GE-STIR, 3D GE, ME, TME, HSE IMAGING MODES Single, multislice, volume study, fast scan, multi slab, cine TR 12 - 5,000 msec TE 5 - 220 msec SINGLE SLICE 0.8 sec/image MULTISLICE 0.8 sec/image FOV 10 - 20 cm SLIC...
Full size image A localizer in 3 planes provides anatomical details, particularly position and size of the uterus and serves for planning the diagnostic images. The key imaging sequence to assess the uterus is T2WI. Thus, 3 planes of T2WI will allow definition of size, location, extent, and ...
STIR is more susceptible to flow-related artefacts (which are conducive to false-positive interpretations), has lower image quality and interobserver agreement, and is more time-consuming. Therefore, STIR should be considered not as a stand-alone sequence but, instead, as a substitute for the pr...
Full size image MRI MRI was performed using the 1.5-T system (MAGNETOM Symphony; Siemens Healthcare, Erlangen, Germany). STIR of thigh muscles in the axial plane was conducted using the following parameters: repetition time: 6500 ms; echo time: 65 ms; inversion time: 190 ms; slice thickness...
59,60 T2 mapping also detects fluid-sensitive sequences (STIR) and hyperemia may be assessed through T1 mapping. Furthermore, focal increases in extracellular volume as measured by pre-contrast and post-contrast T1 mapping may also suggest edema. In addition, T2* imaging allows to better ...
TI:第一个180RF波和90度RF波之间时间长 Signal Suppression的原理:先给个180RF波,将氢负Z轴RF关闭会Z轴进图A、B两组织supression掉A组织则当AXY平面时(1)开给90度RF做影像,则A会负Z轴XY平面上则讯号 最常见应两 (1)FLAIR(fluid attenuated IR) 消除水的讯号1.5T之下TI=2080ms,使脑质变显 (2)STIR(...
STIR is more susceptible to flow-related artefacts (which are conducive to false-positive interpretations), has lower image quality and interobserver agreement, and is more time-consuming. Therefore, STIR should be considered not as a stand-alone sequence but, instead, as a substitute for the pr...
Full size image For delineation, STIR imaging was also used since the tumors are more clearly discriminated from normal tissue on this sequence. Radiomic features extracted from this sequence may also further improve the prognostic model, and therefore additional prognostic models based on the combinati...