Gastrointestinal Applications of Iodine Quantification Using Dual-Energy CT: A Systematic Review.
Jack Junchi XuMikkel TaudorfPeter Sommer UlriksenMichael Patrick AchiamTimothy Andrew ReschMichael Bachmann NielsenLars Birger LönnKristoffer Lindskov HansenPublished in: Diagnostics (Basel, Switzerland) (2020)
Dual-energy computed tomography (DECT) can estimate tissue vascularity and perfusion via iodine quantification. The aim of this systematic review was to outline current and emerging clinical applications of iodine quantification within the gastrointestinal tract using DECT. The search was conducted with three databases: EMBASE, Pubmed and The Cochrane Library. This identified 449 studies after duplicate removal. From a total of 570 selected studies, 30 studies were enrolled for the systematic review. The studies were categorized into four main topics: gastric tumors (12 studies), colorectal tumors (8 studies), Crohn's disease (4 studies) and miscellaneous applications (6 studies). Findings included a significant difference in iodine concentration (IC) measurements in perigastric fat between T1-3 vs. T4 stage gastric cancer, poorly and well differentiated gastric and colorectal cancer, responders vs. non-responders following chemo- or chemoradiotherapy treatment among cancer patients, and a positive correlation between IC and Crohn's disease activity. In conclusion, iodine quantification with DECT may be used preoperatively in cancer imaging as well as for monitoring treatment response. Future studies are warranted to evaluate the capabilities and limitations of DECT in splanchnic flow.
Keyphrases
- dual energy
- computed tomography
- systematic review
- case control
- image quality
- disease activity
- rheumatoid arthritis
- magnetic resonance imaging
- contrast enhanced
- positron emission tomography
- systemic lupus erythematosus
- squamous cell carcinoma
- photodynamic therapy
- combination therapy
- deep learning
- rheumatoid arthritis patients