Detection and characterisation of renal lesions by multiphasic helical CT

Citation
P. Dahlman et al., Detection and characterisation of renal lesions by multiphasic helical CT, ACT RADIOL, 41(4), 2000, pp. 361-366
Citations number
17
Categorie Soggetti
Radiology ,Nuclear Medicine & Imaging
Journal title
ACTA RADIOLOGICA
ISSN journal
02841851 → ACNP
Volume
41
Issue
4
Year of publication
2000
Pages
361 - 366
Database
ISI
SICI code
0284-1851(200007)41:4<361:DACORL>2.0.ZU;2-T
Abstract
Purpose: The fast helical CT technique allows examination of the kidneys du ring different phases of contrast medium enhancement. However, every additi onal phase increases the radiation dosage to the patients. We investigated the detection rate and characterisation of renal lesions during different p hases and evaluated them separately, and considered the possibility of excl uding phases without loss of important information. Material and Methods: Sixty patients who underwent contrast-enhanced multip hasic renal helical CT examination were included. Every CT phase was evalua ted separately The number of lesions and the characteristics of the lesions were noted and all lesions were viewed together. Results. A total of 153 cysts and 17 solid lesions were detected. The large st and an equal number of cysts (142/143) was detected in the nephrographic and excretory phases. However, the nephrographic phase detected more corti cal cysts and the excretory phase detected more sinus cysts. All solid lesi ons were detected in all phases. Renal parenchymal tumours were best charac terised in the cortical phase and angiomyolipomas in the native phase. Conclusion: The cortical phase was best for characterisation of renal paren chymal tumours. The nephrographic and excretory phases were best in detecti ng and characterising renal cysts. The nephrographic phase was the phase gi ving the least diagnostic information.