Title :
X-ray Cone-Beam Breast Computed Tomography: Phantom Studies
Author :
Russo, Paolo ; Mettivier, Giovanni ; Lauria, Adele ; Montesi, Maria Cristina
Author_Institution :
Lab. of Med. Phys., Univ. di Napoli "Federico II, Naples, Italy
Abstract :
We present the design and preliminary imaging evaluation of a bench-top apparatus for X-ray cone-beam breast computed tomography (CBBCT), assembled for technical evaluation and for laboratory tests of various optimization techniques for CBBCT. The prototype is characterized by the computer control of the X-ray tube (W anode, 35-80 kVp, 0.25 mA, 50 ¿m focal spot size), CsI:Tl CMOS flat panel detector (12×12 cm2 area, 50 ¿m pitch, up to 9 fps at 4 × 4 binning), motorized translation and rotation stages with eight degrees of freedom, and fan-beam or cone-beam backprojection software. First cone-beam tomographic images of two 14-cm diameter hemiellipsoidal PMMA breast phantoms are presented.
Keywords :
CMOS image sensors; biological organs; computerised tomography; flat panel displays; gynaecology; optimisation; phantoms; CsI:Tl CMOS flat panel detector; X-ray cone-beam breast computed tomography; X-ray tube; bench-top apparatus; current 0.25 mA; fan-beam backprojection software; hemiellipsoidal PMMA breast phantoms; imaging evaluation; motorized translation; optimization techniques; phantom; rotation stages; size 14 mum; voltage 35 kV to 80 kV; Assembly; Breast; Computed tomography; Design optimization; Imaging phantoms; Laboratories; Optical imaging; Size control; Testing; X-ray imaging; Biomedical X-ray imaging; CMOS flat panel detector; breast computed tomography;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2009.2034373
