(DLP 2453.47) compared to standard-dose examination Purpose: The purpose of the article is to compare the (DLP 3194.32). diagnostic performance about radiation dose and image Conclusions: Low-dose protocol combined with iDose4 quality of low-dose CT with iterative reconstruction reconstruction algorithm offers high-quality images, algorithm (iDose4) and standard-dose CT in the assess- obtaining significant radiation dose reduction, useful ment of mesorectal fascia (MRF) invasion in rectal in the evaluation of MRF involvement in rectal cancer cancer patients. patients. Materials and methods: Ninety-one patients with biopsy- proven primary rectal adenocarcinoma underwent CT Key words: Rectal cancer—Magnetic resonance staging: 42 underwent low-dose CT, 49 underwent imaging—Computed tomography—Mesorectal standard CT protocol. Low-dose contrast-enhanced fascia—Reconstruction algorithm MDCT scans were performed on a 256 (ICT, Philips) scanner using 120 kV, automated mAs modulation, iDose4 iterative reconstruction algorithm. Standard- The prognosis of rectal cancer directly relates to extra- dose MDCT scans were performed on the same scanner mural tumor spread into the mesorectum, to the ability with 120 kV, 200–300 mAs. All patients underwent a to achieve surgical clearance, and to the presence of oc- standard lower abdomen MR study (on 1.5T magnet), cult hepatic and lymph node metastases . including multiplanar sequences, considered as reference
Abdominal Radiology – Springer Journals
Published: Apr 20, 2017
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