Computed tomography colonography phantom: Construction, validation and literature review

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00064165%3A_____%2F16%3A10337171" target="_blank" >RIV/00064165:_____/16:10337171 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11110/16:10337171

Result on the web

<a href="http://dx.doi.org/10.5812/iranjradiol.31069" target="_blank" >http://dx.doi.org/10.5812/iranjradiol.31069</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5812/iranjradiol.31069" target="_blank" >10.5812/iranjradiol.31069</a>

Result language

angličtina

Original language name

Computed tomography colonography phantom: Construction, validation and literature review

Original language description

Background: Several dedicated computed tomography (CT) colonography phantoms have been described previously. Objectives: To compare their pros and cons and describe the construction of a dedicated phantom that can be easily manufactured. Materials and Methods: We found 15 different phantom designs by literature search and compared their advantages and disadvantages based on their description and images. We tested various materials for density and mechanical properties and constructed a phantom from polypropylene pipes (30 mm and 50 mm in diameter, 52 cm in length). Haustral folds were created by heat shaping and 39 intermediate sessile polyps with a target size of 6-10 mm and two flat lesions were created from silicone. Nine polyps were attached to a fold. The model was placed in a 30-cm barrel filled with water to simulate attenuation of human body. Attenuation of polyps was compared to intermediate polyps found in patients. Results: None of the earlier colonic phantoms found in the literature incorporated all the properties that would ensure both repro-ducibility and validity of the model (including a rigid wall, density of the wall and polyps similar to human colon, at least two levels of distension and durability). In the present phantom, the average size of sessile polyps was 8.6 +- 0.9 mm and their density was 53 +- 24 HU. We found no significant difference in polyp density between simulated polyps in the phantom and polyps in human subjects (P = 0.70). All polyps, with the exception of one flat lesion, were detected by computer aided detection. Conclusion: We constructed and validated a CT colonography phantom with correct density allowing performance of reproducible experiments.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

FP - Other medical fields

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Iranian Journal of Radiology

ISSN

1735-1065

e-ISSN

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Volume of the periodical

13

Issue of the periodical within the volume

4

Country of publishing house

IR - IRAN, ISLAMIC REPUBLIC OF

Number of pages

8

Pages from-to

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UT code for WoS article

000395456300004

EID of the result in the Scopus database

2-s2.0-84994092919