TY  - JOUR
AU  - Emmerich, Julian
AU  - Laun, Frederik
AU  - Pfaffenberger, Asja
AU  - Schilling, Rebecca
AU  - Denoix, Michael
AU  - Maier, Florian
AU  - Sterzing, Florian
AU  - Bostel, Tilman
AU  - Straub, Sina
TI  - Technical Note: On the size of susceptibility-induced MR image distortions in prostate and cervix in the context of MR-guided radiation therapy.
JO  - Medical physics
VL  - 45
IS  - 4
SN  - 0094-2405
CY  - New York, NY
M1  - DKFZ-2018-00526
SP  - 1586 - 1593
PY  - 2018
AB  - To investigate the extent of MR image distortions in the pelvis caused by susceptibility-induced field inhomogeneities in MR images in the context of a study on MR-guided radiotherapy.Using a high-bandwidth double-echo gradient echo sequence, field maps and distortion maps of the pelvis were calculated and evaluated for 219 exams (92 of female and 127 of male patients) to investigate patient-related image distortions caused by susceptibility differences in an ongoing study on MR-guided radiotherapy. The evaluation of distortions in the regions 'rectum', 'prostate', 'cervix', and in a reference region in the gluteus maximus was based on masks drawn by two readers.Distortions in the prostate and cervix were smaller than 0.03 px (0.1 mm) for 99
LB  - PUB:(DE-HGF)16
C6  - pmid:29394448
DO  - DOI:10.1002/mp.12785
UR  - https://inrepo02.dkfz.de/record/132884
ER  -