| | |  | | | | Record from Web of Science® | | | | | | |
| Source placement error for permanent implant of the prostate |
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| Author(s): Roberson PL, Narayana V, McShan DL, Winfield RJ, McLaughlin PW |
| Source: MEDICAL PHYSICS Volume: 24 Issue: 2 Pages: 251-257 Published: FEB 1997 |
| Times Cited: 82 References: 6 |
| Abstract: The performance of ultrasound (US) and fluoroscopic-guided permanent I-125 source implant of the prostate using CT identification of the source positions has been evaluated. Marker seeds were implanted during the planning study to assist in the alignment of the US and CT prostate volumes for treatment planning and to guide the placement of needles. The relative positions of the needles and marker seeds were checked by fluoroscopy. A postimplant CT study was used to input the radioactive source positions and to register the sources relative to the preimplant CT and US prostate volumes and the planned source distribution. Source placement errors observed were categorized as: (1) source-to-source spacing differences; (2) needle placement error, both depth and position; and (3) seed splaying, particularly near the prostate periphery. Errors due to source splaying and spacing were in part attributed to prostate motion. Later refinements included fixed-spaced string sources, for which placement errors were smaller than for unattached sources. However, source placement errors due to needle placement error and prostate motion remained unchanged. (C) 1997 American Association of Physicists in Medicine. |
| Document Type: Article |
| Language: English |
| Reprint Address: Roberson, PL (reprint author), UNIV MICHIGAN, ANN ARBOR, MI 48109 USA |
Addresses:
1. PROVIDENCE HOSP, SOUTHFIELD, MI 48075 USA |
| Publisher: AMER INST PHYSICS, CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 |
| Subject Category: Radiology, Nuclear Medicine & Medical Imaging |
| IDS Number: WH749 |
| ISSN: 0094-2405 |
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| | | | | | | | | Record from Web of Science® | | | | | | | | | |