生物医学图像处理：CT原理与算法（下）

Cone-Beam Geometry

Cone-Beam Geometry X Z Y

螺旋锥形束CT (From G. Wang

螺旋锥形束CT (From G. Wang)

心脏成像

心脏成像

动态成像

动态成像

4D CT 6.5Y Figure l front view of 4D CT. It uses a wide-area 2d detector designed on the basis of the present CT technology and mount 912ch ed it on the gantry frame of the state-of-the-art CT-scanner Figure 2 Illustration of the detectors and the geom- etry used in 4D CT

4D CT

4D CT 128m Detector arrad 912ch Fromt Vic de veew

4D CT

4DCT检测器 I Detector system I 38- blocks(912<h) TTTTTIIIIIIIIIIIIIIIIIILL 4 blocks TIIIIIILL(256-slices) [Detector slIces block 1 24-ch

4D CT 检测器

Multi-source cone-beam CT Detector Source (From G. Wang)

Multi-source cone-beam CT Detector Source (From G. Wang)

小动物成像 Micro-CT

小动物成像 Micro-CT

Skin reference marking Position of treatment Volume must be related to markings on patient's skin Lasers ImPACT Course 07/02- CT in Radiotherapy