PURPOSE: The aim of this study was to assess the variation of probe rotation angles for detecting a single needle using sagittal images of transrectal ultrasonography (TRUS). MATERIALS AND METHODS: A phantom study was performed. One needle was inserted through each of 10 holes of the template, and variations in the probe rotation angles for detecting the needle were measured. RESULTS: The mean variation of probe rotation for detecting a single needle was 17.0 degrees (range 4 degrees -25 degrees ). Slightly broader variation was seen for the needle in holes farther away from the probe. CONCLUSION: Probe rotation angles for detecting a single needle displayed considerable variation. Seed locations recognized on sagittal imaging by TRUS are thus indeterminate, and real-time dose calculations using TRUS for (125)I seed implantation should be used with care.
PURPOSE: The aim of this study was to assess the variation of probe rotation angles for detecting a single needle using sagittal images of transrectal ultrasonography (TRUS). MATERIALS AND METHODS: A phantom study was performed. One needle was inserted through each of 10 holes of the template, and variations in the probe rotation angles for detecting the needle were measured. RESULTS: The mean variation of probe rotation for detecting a single needle was 17.0 degrees (range 4 degrees -25 degrees ). Slightly broader variation was seen for the needle in holes farther away from the probe. CONCLUSION: Probe rotation angles for detecting a single needle displayed considerable variation. Seed locations recognized on sagittal imaging by TRUS are thus indeterminate, and real-time dose calculations using TRUS for (125)I seed implantation should be used with care.
Authors: Gert J Meijer; Hetty A van den Berg; Coen W Hurkmans; Pascal E Stijns; Jan H Weterings Journal: Radiother Oncol Date: 2006-08-23 Impact factor: 6.280
Authors: Peter F Orio; Ismail B Tutar; Sreeram Narayanan; Sandra Arthurs; Paul S Cho; Yongmin Kim; Gregory Merrick; Kent E Wallner Journal: Int J Radiat Oncol Biol Phys Date: 2007-09-01 Impact factor: 7.038
Authors: H Ragde; J C Blasko; P D Grimm; G M Kenny; J E Sylvester; D C Hoak; K Landin; W Cavanagh Journal: Cancer Date: 1997-08-01 Impact factor: 6.860