Avaliaˋˋo de m谷todos radiol車gicos na detecˋˋo de corpo estranho de madeira em modelo animal

作者：Venter; Neil Grant; Jamel; Nelson; Marques; Ruy Garcia; Djahjah; Flavia; Mendona; Leonardo de Souza

来源：Acta Cirurgica Brasileira, 2005.

DOI：10.1590/S0102-86502005000700005

• foreign body
• radiography
• ultrasonography
• magnetic resonance
• computed tomography.

purpose: to determine the usefulness of different radiological methods in the diagnoses of wooden foreign bodies (fb). methods: eleven adult chickens were used. each thigh received a puncture wound and in one of them a wooden splinter was introduced and left in place while in the contralateral it was introduced and removed (control group). after 7 days the animals where killed and the legs removed to be analyzed with conventional radiography (cr), ultrasonography (us), magnetic resonance and computed tomography. the results were viewed by 2 independent senior radiologists. results: sensitivity was: cr - 13.6%; us - 63.6%; mr - 59.1%; and ct - 72.7%, with specificity of 100%, 100%, 95.5%, and 95.5%, respectively. the positive predictive value for cr and us was 100%, 95% for ct 95% and 93.8% for mr. ct had a negative predictive value of 78.3%, while us, mr, and cr had 73.7%, 70.1%, and 53.7%, respectively. the accuracy for ct was 84.1%, followed by us - 81.8%, rm - 77.3%, and cr - 56.8%. inflammatory reaction was histologically demonstrated in all thighs containing fb. conclusion: cr showed a poor performance to detect wooden fb in chickens, while us and ct seem to be the best option, followed by rm.