Fat suppression at 2D MR imaging of the hands: Dixon method versus CHESS technique and STIR sequence

Abstract Background The value of adding coronal STIR images to MR imaging of sciatica aiming to detect extra-spinal abnormalities. Results Additional coronal STIR images detected extra-spinal abnormalities in 20% of the patients, thereby downgraded the normal studies from 21 to 13%. The extra-spinal abnormalities included bone abnormalities (36.4%), soft tissue abnormalities (4.5%), neurological abnormalities (2.3%), gynecological abnormalities (50%), and miscellaneous (6.8%). In 6.9% of patients, the extra-spinal abnormalities explained the patients’ pain and influenced their management. Extra-spinal causes of pain significantly correlated to positive trauma and neoplasm history, normal routine protocol images, and absent nerve root impingement. Extra-spinal abnormalities were more prevalent in age groups (20–39 years). Conclusion Coronal STIR images (field of view: mid abdomen to the lesser trochanters) identify extra-spinal abnormalities that maybe overlooked on routine MRI protocol. It is of additional value in young adults, trauma, neoplasm, and negative routine images.

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Comparison of fat suppression capability for chest MR imaging with Dixon, SPAIR and STIR techniques at 3 Tesla MR system

Magnetic Resonance Imaging ◽

10.1016/j.mri.2017.11.012 ◽

2018 ◽

Vol 47 ◽

pp. 89-96 ◽

Cited By ~ 3

Author(s):

Yuji Kishida ◽

Hisanobu Koyama ◽

Shinichiro Seki ◽

Takeshi Yoshikawa ◽

Katsusuke Kyotani ◽

...

Keyword(s):

Mr Imaging ◽

Fat Suppression ◽

3 Tesla

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3-T MRI in Patients Received Anterior Cervical Discectomy and Fusion Surgery with MAVRIC SL IR Sequence: A Feasibility Study

Combinatorial Chemistry & High Throughput Screening ◽

10.2174/1386207324666210322125827 ◽

2021 ◽

Vol 24 ◽

Author(s):

Renjie Yang ◽

Changsheng Liu ◽

Liang Li ◽

Liang Chen ◽

Weiyin Vivian Liu ◽

...

Keyword(s):

Spinal Cord ◽

Soft Tissues ◽

Fat Suppression ◽

Anterior Cervical Discectomy ◽

Peek Cage ◽

Metal Interface ◽

Metal Artifacts ◽

Stir Sequence ◽

3.0 T ◽

3.0 T Mri

Objective: We aimed to investigate the feasibility of multi-acquisition with variable resonance image combination slab selectivity inversion recovery (MAVRIC SL IR) sequence on 3.0 T MRI in patients with anterior cervical discectomy and fusion (ACDF) surgery compared to bandwidth-optimized short tau inversion recovery (STIR) sequence. Methods: Paired sagittal MR images of MAVRIC SL IR and bandwidth-optimized STIR sequences were acquired and analyzed for 21 patients after ACDF surgery with PEEK cage-plate construct. Quantitative comparisons were made on the metal artifact areas of paired mid-sagittal images. In qualitative analysis, the consistency of fat suppression and visibility of anatomic structures (bone-metal interface, surrounding soft tissues, and spinal cord) were independently assessed, based on a five-point scale by two musculoskeletal radiologists, who were blind to the images and patient details. Results: The application of the MAVRIC SL IR sequence resulted in a significant reduction of 48% in the mean area of metal artifacts (t =-7.141, P < 0.001). Based on the comments received from both the reviewers, MAVRIC SL IR sequence showed greater visibility of the bone-metal interface (P < 0.001), considerable visibility of the surrounding soft tissues (P > 0.05) but worse visibility obtained of the spinal cord (P < 0.001), including the consistency of fat suppression (P < 0.001) relative to the bandwidth-optimized STIR sequence. Conclusion: With significantly reduced metal artifacts, the MAVRIC SL IR sequence can be implemented in patients undergoing ACDF surgery with PEEK cage-plate construct for 3.0 T MRI, despite the poor visibility of the spinal cord.

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