Significance of Image Guidance to Clinical Outcomes for Localized Prostate Cancer

Table 6

Added dose and time per modality per fraction in pelvis IGRT [16, 50–53].

Modality	Dose at midbody (cGy)	Time (min)*	Available examples^&
Ultrasound	0	2-3	BATCAM, Clarity
Plain kV^†	0.1–0.6	0.1–3	Cyberknife, ExacTrac
Plain MV^†	1–10	0.1–3	Various EPID and portal devices
kV CBCT^‡	2-3	2–4	ARTISTE, OBI, XVI
MV CBCT	5–15	2-3	MVision
kV FBCT^§	0.8–2.8	15	CTVision, EXaCT
MV FBCT	1.5–3	2-3	Tomotherapy

FBCT: fan-beam computed tomography scanning.
∗excludes image interpretation and action on observations.
&BATCAM, Best nomos, Pittsburgh, PA; Clarity and XVI, Elekta, Stockholm, Sweden; Cyberknife and Tomotherapy, Accuray, Sunnyvale, CA; EXaCT, ExacTrac, and OBI, Varian Medical Systems, Inc., Palo Alto, CA; ARTISTE, CTVision, and MVision, Siemens AG, Erlangen, Germany.
†For 2 incidences.
‡Full soft-tissue scan, 360°.
§involves couch rotation and CT translation because CT scanning is not on linac gantry.