title: Pulmonary angiography with 64-multidetector-row computed tomography in normal dogs.
abstract: Pulmonary angiography using 64-multidetector-row computed tomography (MDCT) was used to evaluate pulmonary artery anatomy, and determine the sensitivity of pulmonary artery segment visualization in four Beagle dogs using images reconstructed to 0.625 mm and retro-reconstructed to 1.25 and 2.5 mm slice thickness. Morphologically, characteristic features included a focal narrowing in the right cranial pulmonary artery in all dogs, which should not be mistaken as stenosis. While the right cranial pulmonary artery divided into two equally sized branches that were tracked into the periphery of the lung lobe in all dogs, only a single left cranial (cranial portion) lobar artery was present. Compared with 1.25 and 2.5 mm retro-reconstructions, 0.625 mm reconstructions allowed for detection of significantly (P≤0.05) more pulmonary artery segments and sharper depiction of vessel margins. Clinical applications such as prevalence and significance of diameter changes, and detection of pulmonary arterial thrombembolism on lobar and sublobar level, using pulmonary angiography with 64-MDCT applying 0.625 mm reconstruction slice thickness remain to be established.
authors.affiliation: Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Linden Drive 2015, Madison, WI 53706, USA. drees@svm.vetmed.wisc.edu
authors.forename: Randi
authors.initials: R
authors.lastname: Drees
authors.forename: Alex
authors.initials: A
authors.lastname: Frydrychowicz
authors.forename: Nicholas S
authors.initials: NS
authors.lastname: Keuler
authors.forename: Scott B
authors.initials: SB
authors.lastname: Reeder
authors.forename: Rebecca
authors.initials: R
authors.lastname: Johnson
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D003287:Contrast Media; D017023:Coronary Angiography / Q000379:methods / Q000662:veterinary*; D004285:Dogs / Q000033:anatomy & histology*; D011651:Pulmonary Artery / Q000033:anatomy & histology* / Q000000981:diagnostic imaging*; D011856:Radiographic Image Enhancement; D014057:Tomography, X-Ray Computed / Q000379:methods / Q000662:veterinary*
chemical_list: D003287:Contrast Media