3-Tesla MR spectroscopy in patients subjected to bone marrow transplantation: clinical correlations.

PURPOSE: This study evaluated the usefulness of 3-Tesla magnetic resonance (MR) spectroscopy in patients with non-Hodgkin's lymphoma (NHL) undergoing bone marrow transplantation (BMT). MATERIALS AND METHODS: Twelve NHL patients who were candidates for BMT underwent three MR examinations of the lumbosacral spine: before ablative therapy for BMT, 15±4 days and 54±24 days after BMT. The MR study was supplemented by spectroscopic analysis. The lipid content was calculated and expressed as a percentage of lipid signal intensity relative to total signal intensity [fat fraction (FF)]. RESULTS: In the first MR study, the FF was 62.5±7%, in the second it was 70.75±5% and in the third it was 75±1%. We observed a statistically significant difference between FF values calculated at the various MR studies (p=0.02) and between red blood cell count (p=0.017), platelet count (p=0.003) and haematocrit (p<0.001) at the three MR studies. FF had a statistically significant correlation with the number of circulating platelets (p<0.01) CONCLUSIONS: MR spectroscopy of the bone marrow of NHL patients undergoing BMT is noninvasive and highly sensitive for characterising and monitoring bone marrow after BMT.

Combined use of percutaneous cryoablation and vertebroplasty with 3D rotational angiograph in treatment of single vertebral metastasis: comparison with vertebroplasty.

INTRODUCTION: This study aims to assess the effectiveness of combined procedure of cryoablation and vertebroplasty (CVT) for reduction of pain and improvement of the quality of life in patients with single painful metastatic vertebral fractures. METHODS: We retrospectively analyzed data from 23 patients with single vertebral metastasis treated with combined procedure of CVT, compared with those obtained in 23 patients treated by vertebroplasty. Pain intensity was evaluated by a visual analog scale (VAS) score administered before and 1 day, 1 week, and 1, 3, and 6 months after procedure. Quality of life was evaluated by an Oswestry Disability Index (ODI) score administered before and at 3 and 6 months after procedure. RESULTS: Procedural success was achieved in all patients without any complications. The VAS and ODI scores showed a reduction in both groups during follow-up (VAS score, p < 0.05 and p < 0.001, respectively; ODI score, p < 0.0001). No difference of the VAS and ODI scores were observed before treatment (p = 0.33 and 0.78, respectively). VAS score showed a difference at 1 week and 1, 3, and 6 months after treatment (p < 0.001). ODI score showed a difference at 3 and 6 months after treatment (p < 0.001). CONCLUSION: Our findings suggested that combined procedure of CVT is safe and effective for pain relief in single metastatic vertebral fractures, especially when other standard palliative treatments have failed, and improves disability. Careful needle positioning and accurate fluoroscopic and CT guidance are mandatory for a complication-free treatment.