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Forschungsdatenbank PMU-SQQUID

Computed tomography scout views vs. conventional radiography in body-packers - delineation of body-packs and radiation dose in a porcine model.
Ziegeler, E; Grimm, JM; Wirth, S; Uhl, M; Reiser, MF; Scherr, MK;
Eur J Radiol. 2012; 81(12):3883-3889
Originalarbeiten (Zeitschrift)

PMU-Autor/inn/en

Grimm Jochen

Abstract

OBJECTIVE
To compare abdominal computed tomography (CT) scout views with conventional radiography regarding radiation dose and delineation of drug packages in a porcine body-packer model.
Nine samples of illicit drugs packed in ovoid plastic containers were consecutively placed in the rectum of a 121.5 kg pig cadaver. Antero-posterior and lateral scout views were obtained at 120 kVp and 80 mA, 150 mA and 200 mA, respectively, using a 64-row MDCT. Scout views were compared with conventional abdominal antero-posterior radiographs (77 kV and 106 ± 13 mAs). Visibility of three body pack characteristics (wrapping, content, shape) was rated independently by two radiologists and summarized to a delineation score ranging from 0 to 9 with a score ≥ 6 representing sufficient delineation. Mean delineation scores were calculated for each conventional radiography and single plane scout view separately and for a combined rating of antero-posterior and lateral scout views.
Even the lowest single plane scout view delineation score (5.3 ± 2.0 for 80 mA lateral; 0.4 mSv; sensitivity=44%) was significantly higher than for conventional radiographs (3.1 ± 2.5, p<0.001; 2.4 ± 0.3 mSv; sensitivity=11%). Combined reading of antero-posterior and lateral scout views 80 mA yielded sufficient delineation (6.2 ± 1.4; 0.8 mSv; sensitivity=56%).
All CT scout views showed significantly better delineation ratings and sensitivity than conventional radiographs. Scout views in two planes at 80 mA provided a sufficient level of delineation and a sensitivity five times higher than conventional radiography at less than one third of the radiation dose. In case of diagnostic insecurity, CT can be performed without additional logistical effort.


Useful keywords (using NLM MeSH Indexing)

Animals

Body Burden*

Crime*

Foreign Bodies/diagnostic imaging*

Humans

Radiation Dosage*

Reproducibility of Results

Sensitivity and Specificity

Substance Abuse Detection/methods*

Swine

Tomography, X-Ray Computed/methods*

X-Ray Film*


Find related publications in this database (Keywords)

CT scout view vs. CR
Body-packer
Illicit drugs
Heroin
Cocaine