PURPOSE: We assessed the diagnostic value of whole body magnetic resonance (MR) imaging (WB-MRI) using diffusion-weighted images (DWI) for detecting bone metastasis and compared it with that of skeletal scintigraphy (SS). MATERIALS AND METHODS: Thirty patients with malignancies (breast cancer, 17 patients; prostate cancer, 9; and one patient each, thyroid cancer, liposarcoma, leiomyosarcoma, and extraskeletal Ewing sarcoma) underwent both WB-MRI and SS to detect bone metastasis. All patients were followed more than 6 months by MR imaging, SS, or computed tomographic (CT) examination. For WB-MRI, patients were placed in feet-first supine position with table-top extender and quadrature body coil. We acquired DWI (axial plane from lower neck to proximal femur) (single shot short TI inversion-recovery [STIR]: repetition time [TR] 6243/echo time [TE] 59/inversion time [TI] 180 ms; b value: 600 s/mm(2); 5-mm slice thickness; 112 x 112 matrix), T(1)-weighted fast spin echo (T(1)WI), and STIR (sagittal plane of total spine images and coronal plane of whole body images) images. Four blinded readers independently and separately interpreted images of combined MR sequences of T(1)WI+STIR (session 1) and T(1)WI+STIR+DWI (session 2). RESULTS: In 10 of 30 patients, we detected a total of 52 metastatic bone lesions; in the other 20, follow-up examinations confirmed no metastatic bone lesions. For these 52 lesions, for session 2, the mean sensitivity was 96% and the positive predictive value (PPV) was 98%. Those values were superior to those of session 1 (sensitivity: 88%; PPV: 95%) and those of SS (sensitivity: 96%; PPV: 94%). CONCLUSION: WB-MRI that included DWI was useful for detecting bone metastasis.
PURPOSE: We assessed the diagnostic value of whole body magnetic resonance (MR) imaging (WB-MRI) using diffusion-weighted images (DWI) for detecting bone metastasis and compared it with that of skeletal scintigraphy (SS). MATERIALS AND METHODS: Thirty patients with malignancies (breast cancer, 17 patients; prostate cancer, 9; and one patient each, thyroid cancer, liposarcoma, leiomyosarcoma, and extraskeletal Ewing sarcoma) underwent both WB-MRI and SS to detect bone metastasis. All patients were followed more than 6 months by MR imaging, SS, or computed tomographic (CT) examination. For WB-MRI, patients were placed in feet-first supine position with table-top extender and quadrature body coil. We acquired DWI (axial plane from lower neck to proximal femur) (single shot short TI inversion-recovery [STIR]: repetition time [TR] 6243/echo time [TE] 59/inversion time [TI] 180 ms; b value: 600 s/mm(2); 5-mm slice thickness; 112 x 112 matrix), T(1)-weighted fast spin echo (T(1)WI), and STIR (sagittal plane of total spine images and coronal plane of whole body images) images. Four blinded readers independently and separately interpreted images of combined MR sequences of T(1)WI+STIR (session 1) and T(1)WI+STIR+DWI (session 2). RESULTS: In 10 of 30 patients, we detected a total of 52 metastatic bone lesions; in the other 20, follow-up examinations confirmed no metastatic bone lesions. For these 52 lesions, for session 2, the mean sensitivity was 96% and the positive predictive value (PPV) was 98%. Those values were superior to those of session 1 (sensitivity: 88%; PPV: 95%) and those of SS (sensitivity: 96%; PPV: 94%). CONCLUSION: WB-MRI that included DWI was useful for detecting bone metastasis.
Authors: Frank I Lin; Jyotsna E Rao; Erik S Mittra; Kavitha Nallapareddy; Alka Chengapa; David W Dick; Sanjiv Sam Gambhir; Andrei Iagaru Journal: Eur J Nucl Med Mol Imaging Date: 2011-11-08 Impact factor: 9.236
Authors: Michael Souvatzoglou; Matthias Eiber; Axel Martinez-Moeller; Sebastian Fürst; Konstantin Holzapfel; Tobias Maurer; Sibylle Ziegler; Stephan Nekolla; Markus Schwaiger; Ambros J Beer Journal: Eur J Nucl Med Mol Imaging Date: 2013-05-24 Impact factor: 9.236
Authors: Alexis Vrachimis; Lars Stegger; Christian Wenning; Benjamin Noto; Matthias Christian Burg; Julia Renate Konnert; Thomas Allkemper; Walter Heindel; Burkhard Riemann; Michael Schäfers; Matthias Weckesser Journal: Eur J Nucl Med Mol Imaging Date: 2016-04-08 Impact factor: 9.236
Authors: Riccardo Del Vescovo; Giulia Frauenfelder; Francesco Giurazza; Claudia Lucia Piccolo; Roberto Luigi Cazzato; Rosario Francesco Grasso; Emiliano Schena; Bruno Beomonte Zobel Journal: Radiol Med Date: 2014-03-18 Impact factor: 3.469
Authors: B Paudyal; P Paudyal; Y Tsushima; N Oriuchi; M Amanuma; M Miyazaki; A Taketomi-Takahashi; Y Nakazato; K Endo Journal: Br J Radiol Date: 2009-07-20 Impact factor: 3.039