Rib artifacts in electron beam tomography: incidence and severity without and with the cone beam reconstruction algorithm.
Electron beam tomography (EBT) may be compromised by rib artifacts. Two hundred forty-seven abdominal studies were performed without (Group A, n = 222) or with (Group B, n = 25) the cone beam algorithm. One hundred eighty-six (83.8%) and nine (36%) studies of Groups A and B, respectively, displayed some level of artifact. In Groups A and B, major, minor, and no artifacts were found in 115 (51.5%) and 0 (0%), 71 (32.3%) and 9 (36%), and 36 (16.2%) and 16 (64%) patients, respectively (p < 0.01). The cone beam algorithm improves EBT studies of the abdomen.
Enzweiler
C N
CN
Institut für Radiologie, Charité, Humboldt-Universität zu Berlin, Germany. chrisitan.enzweiler@charite.de
Taupitz
M
M
Petersein
J
J
SheedyI
P F
PF
Breen
J F
JF
Hamm
B
B
D000465:Algorithms; D016477:Artifacts; D016009:Chi-Square Distribution; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012272:Ribs / Q000000981:diagnostic imaging*; D018709:Statistics, Nonparametric; D014057:Tomography, X-Ray Computed / Q000379:methods*