OBJECTIVE: Confirming the surgical osseous margin of a resected malignant bone tumor macroscopically before reconstruction with a prosthesis is ideal. However, making the cut-surface of the femur specimen during surgery is difficult because of the hard bone tissue. In order to resolve this problem, the possibility of intraoperative MRI was considered. METHODS: MRI was performed at the surgical unit for five malignant femoral bone tumors that included two osteosarcomas and one undifferentiated high-grade sarcoma, and two metastatic tumors immediately after the tumor resection. The specimens were prepared in plastic containers with saline. RESULTS: The osseous surgical margins were confirmed to be those planned pre-operatively in all cases without metal-induced artifacts. The T1 weighted image (WI) was useful for evaluation of the osseous surgical margin, whereas the T2WI was useful for confirmation of extraosseous soft-tissue. CONCLUSION: The MRI was performed post-operatively as a preliminary evaluation of the technique. However, a limited sequence (i.e. coronal T1WI) with short examination time could be performed during surgery for the sole purpose of assessing the osseous margin. ADVANCES IN KNOWLEDGE: MRI examination of a resected malignant bone tumor specimen has not been reported, and can be an option for assessment of the osseous surgical margin.
OBJECTIVE: Confirming the surgical osseous margin of a resected malignant bone tumor macroscopically before reconstruction with a prosthesis is ideal. However, making the cut-surface of the femur specimen during surgery is difficult because of the hard bone tissue. In order to resolve this problem, the possibility of intraoperative MRI was considered. METHODS: MRI was performed at the surgical unit for five malignant femoral bone tumors that included two osteosarcomas and one undifferentiated high-grade sarcoma, and two metastatic tumors immediately after the tumor resection. The specimens were prepared in plastic containers with saline. RESULTS: The osseous surgical margins were confirmed to be those planned pre-operatively in all cases without metal-induced artifacts. The T1 weighted image (WI) was useful for evaluation of the osseous surgical margin, whereas the T2WI was useful for confirmation of extraosseous soft-tissue. CONCLUSION: The MRI was performed post-operatively as a preliminary evaluation of the technique. However, a limited sequence (i.e. coronal T1WI) with short examination time could be performed during surgery for the sole purpose of assessing the osseous margin. ADVANCES IN KNOWLEDGE: MRI examination of a resected malignant bone tumor specimen has not been reported, and can be an option for assessment of the osseous surgical margin.
Authors: Leonardo M Angelone; Jyrki Ahveninen; John W Belliveau; Giorgio Bonmassar Journal: IEEE Trans Med Imaging Date: 2010-03-22 Impact factor: 10.048
Authors: Song Hon H Kim; Sylvie D Cornacchi; Barbara Heller; Forough Farrokhyar; Melissa Babra; Peter J Lovrics Journal: Am J Surg Date: 2013-03-07 Impact factor: 2.565
Authors: Tim J van Oostenbrugge; Willemien Runneboom; Elise Bekers; Jan Heidkamp; Johan F Langenhuijsen; Andor Veltien; Arie Maat; Peter F A Mulders; Christina A Hulsbergen-van de Kaa; Jurgen J Fütterer Journal: Eur Radiol Date: 2018-07-24 Impact factor: 5.315