Large-area two-dimensional detector for real-time three-dimensional CT (4D CT)

Saito, Yasuo; Aradate, Hiroshi; Mitsuya, Hiroaki; Igarashi, Kenji; Ide, Hideki

doi:10.1117/12.430896

Cited by 38 publications

(20 citation statements)

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“…The prototype 256MDCT uses a wide-area cylindrical 2D detector designed on the basis of present CT technology and mounted on the gantry frame of a 16-detector-row CT [16] (Aquilion, Toshiba Medical Systems, Otawara, Japan). It has 912 (transverse) × 256 (cranio-caudal) elements, each approximately 0.5×0.5 mm at the center of rotation.…”

Section: Methodsmentioning

confidence: 99%

Properties of the prototype 256-row (cone beam) CT scanner

Mori¹,

Endo²,

Obata³

et al. 2006

Eur Radiol

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We evaluated Feldkamp artifacts, which are specific to cone-beam computed tomography (CT), in phantom and clinical studies using the 256-multidetector-row CT (256MDCT), and compared the reconstruction accuracy of axial and helical scans. Image noise, slice sensitivity profile (SSP) and artifacts with the 256MDCT were evaluated using a phantom, and the results were compared to those of a 64MDCT. We also examined chest and abdomen scans produced with the 256MDCT in volunteers. For the axial scan, Feldkamp artifacts were visualized as high-frequency streak-like artifacts that are oriented horizontally at the edge of the scan region in the phantom study. Similar results were obtained with the volunteers in soft-tissue regions near either bony structures or air pockets. Feldkamp artifacts with the 256MDCT can lead to misdiagnosis if not correctly identified and minimized via helical scanning. Image noise was less for axial than helical scans, while SSP was better with helical than axial scans. Feldkamp artifacts observed in the 256MDCT images, however, did not generally affect the interpretation of images. The 256MDCT promises more accurate diagnosis, and will provide volumetric cine images of wider cranio-caudal coverage, enabling new applications of CT.

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Section: Methodsmentioning

confidence: 99%

Properties of the prototype 256-row (cone beam) CT scanner

Mori¹,

Endo²,

Obata³

et al. 2006

Eur Radiol

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show abstract

“…The second model of the 256MSCT was based on the design of the first [12,13], which used a wide-area cylindrical 2D detector incorporating present CT technology mounted on the gantry frame of a 16-slice CT [14] (Aquilion, Toshiba Medical Systems). The 256MSCT has 912 (transverse) × 256 (cranio-caudal) elements, each approximately 0.5 mm × 0.5 mm at the center of rotation.…”

Section: -Multi-slice Ct-scanner (256msct)mentioning

confidence: 99%

Four-dimensional measurement of lung tumor displacement using 256-multi-slice CT-scanner

Mori¹,

Endo²,

Komatsu³

et al. 2007

Lung Cancer

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“…The prototype 256-MDCT used a wide-area cylindric 2D detector, designed on the basis of present CT technology and mounted on the gantry frame of the 16-MDCT (Aquilion, Toshiba Medical Systems) [3]. The number of detectors was 912 (transverse) × 256 (craniocaudal), each approximately 0.58 × 0.50 mm at the center of rotation, resulting in a total of 233,472 elements.…”

Section: Prototype 256-mdctmentioning

confidence: 99%