Turbo inversion recovery magnitude
Citation, DOI & article data
Turbo inversion recovery magnitude (TIRM) is an inversion recovery MRI pulse sequence that displays the magnitude of a turbo/fast spin echo, without regard for the phase/polarity of the longitudinal magnetization. This method of image reconstruction is the dominant form of inversion recovery used and is contrasted to phase-sensitive inversion recovery (PSIR). The use of magnitude reconstruction allows selective nulling (making certain materials appear dark): inversion time can be set short for fat suppression (STIR) or long for fluid attenuation (FLAIR).
It has been shown to be superior in the assessment of osteomyelitis in bone 1 and in the assessment of head and neck tumors 2.
- 1. Hauer MP, Uhl M, Allmann KH et-al. Comparison of turbo inversion recovery magnitude (TIRM) with T2-weighted turbo spin-echo and T1-weighted spin-echo MR imaging in the early diagnosis of acute osteomyelitis in children. Pediatr Radiol. 1998;28 (11): 846-50. - Pubmed citation
- 2. Sadick M, Sadick H, Hörmann K et-al. Diagnostic evaluation of magnetic resonance imaging with turbo inversion recovery sequence in head and neck tumors. Eur Arch Otorhinolaryngol. 2005;262 (8): 634-9. doi:10.1007/s00405-004-0878-x - Pubmed citation