Digital Tomosynthesis for Patient Alignment System Using Half-fan Mode CBCT Projection Images / 의학물리
Korean Journal of Medical Physics
;
: 360-366, 2010.
Article
in Korean
| WPRIM
| ID: wpr-156693
ABSTRACT
To generate on-board digital tomosynthesis (DTS) for three-dimensionalimage-guided radiation therapy (IGRT) as an alternative to conventional portal imaging or on-board cone-beam computed tomography (CBCT), two clinical cases (liver and bladder) were selected to illustrate the capabilities of on-board DTS for IGRT. DTS images were generated from subsets of CBCT projection data (45, 162 projections) using half-fan mode scanning with a Feldkamp-type reconstruction algorithm. Digital tomosynthesis slices appeared similar to coincident CBCT planes and yielded substantially more anatomic information. Improved bony and soft-tissue visibility in DTS images is likely to improve target localization compared with radiographic verification techniques and might allow for daily localization of a soft-tissue target. Digital tomosynthesis might allow targeting of the treatment volume on the basis of daily localization.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Cone-Beam Computed Tomography
/
Patient Positioning
Limits:
Humans
Language:
Korean
Journal:
Korean Journal of Medical Physics
Year:
2010
Type:
Article
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