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Feasibility of a fixed scan delay technique using a previous bolus tracking technique data for dynamic hepatic CT.

Abstract：

OBJECTIVE:To compare the quality of contrast enhancement and hepatic CT images acquired using bolus tracking technique at two different time points and those acquired with fixed scan delay technique using a previous bolus tracking data. MATERIALS AND METHODS:Fifty patients who underwent 3 different hepatic CT exams (25-s fixed injection of 600 mg iodine (I)/kg or 100mL of 370 mg I/mL nonionic contrast medium) were enrolled. The first and second exams were performed with a bolus tracking technique. The third exam was performed with a fixed scan delay technique using the first exam data. Differences in attenuation values in the abdominal organs were examined and evaluated visually on hepatic arterial phase images. RESULTS:There was no significant difference in the mean 50-HU threshold times between the first and second bolus tracking exams with intra-patient differences between them (1.3±0.9 s). No significant intra-patient differences were noted in organ attenuation and visual evaluation on hepatic arterial phase images between the 3 exams. CONCLUSION:The fixed scan delay technique using a previous bolus tracking data is feasible for hepatic CT exams to follow up hepatocellular carcinoma.

journal_name

Eur J Radiol

journal_title

European journal of radiology

authors

Takumi K,Fukukura Y,Shindo T,Kumagae Y,Tateyama A,Kamiyama T,Nakajo M

doi

10.1016/j.ejrad.2012.02.022

subject

Has Abstract

pub_date

2012-11-01 00:00:00

pages

2996-3001

issue

11

eissn

0720-048X

issn

1872-7727

pii

S0720-048X(12)00267-7

journal_volume

81

pub_type

杂志文章

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