Keywords:
Abdomen, MR-Cholangiography, Imaging sequences, Neoplasia
Authors:
A. Angeli, S. Kashmoola, M. Strudwick, E. Hornsey, N. Kutaiba
DOI:
10.26044/ranzcr2022/R-0028
Methods and materials
Institutional ethics approval obtained for this retrospective single centre study.
Our older comprehensive / complete non-contrast MRCP (comp-MRCP) protocol includes several sequences. The abbreviated non-contrast MRCP (abbr-MRCP) protocol omitted DWI and 3D MRCP SPACE sequences from comp-MRCP. Details of sequences included in comp-MRCP and abbr-MRCP protocols are listed in Table 1 and shown in Fig. 1.
We conducted a PACS search of non-contrast MRCP studies over an 18-month period from 1/1/2020 to 20/6/2021.
Inclusion criteria were
- Adults: 18 years or older
- Referred for follow-up of pancreatic cyst or IPMN
- Underwent abbr-MRCP
- Had comp-MRCP prior to abbr-MRCP
- Localizer images available in both comp-MRCP and subsequent abbr-MRCP studies
Imaging time for abbr-MRCP and comp-MRCP were retrieved from scanning times recorded on our picture archiving and communication system (PACS). We only included MRCP studies in which localizer images were available on PACS to record exact imaging start time. Cohort demographics (gender and age) were recorded and presented as percentage and mean (standard deviation [SD]), respectively. Median times in minutes (interquartile range [IQR]) for abbr-MRCP and comp-MRCP protocols were tabulated and compared.