Engelhorn Tobias, Rennert Janine, Richter Gregor, Struffert Tobias, Ganslandt Oliver, Doerfler Arnd
Department of Neuroradiology, University of Erlangen, Erlangen, Germany.
Spine (Phila Pa 1976). 2007 Aug 15;32(18):E523-7. doi: 10.1097/BRS.0b013e3181342673.
The technical feasibility of flat panel volumetric computed tomography (FPVCT) for lumbar myelographic imaging was evaluated in 20 patients and compared with multislice computed tomography (MSCT).
The purpose of this study was to determine the feasibility and sensitivity of FPVCT for myelographic imaging in lumbar spinal stenosis.
In the diagnosis of spinal stenosis, myelography and myelo-computed tomography (PCT) have been performed routinely for nearly 30 years. Rotational angiography is a new technique initially developed to visualize vessels but also allowing multiplanar reconstructed (MPR) CT images. The spatial resolution of FPCVT is even higher than in current MSCT. To date, this technique has not been evaluated for use in myelography.
In 20 patients referred for CT for evaluation of low back pain, lumbar myelography was performed on a biplane angiography system equipped with flat panel detectors. FPVCT was provided from a volume data set out of a rotational acquisition and compared with MSCT performed on a 4-slice CT scanner. Hereby, for a total of 100 disc levels (range from L1-L2 to L5-S1), the narrowest dural cross-sectional diameter (D-CSD) and the dural cross-sectional area (D-CSA) referred to MSCT and FPVCT were calculated.
Mean D-CSD and C-CSA for all disc levels as measured by MSCT was 9.26 +/- 3.0 mm and 63.2 +/- 10.8 mm, respectively. Compared with D-CSD and C-CSA measured by FPVCT, there was no statistically significant difference (9.48 +/- 2.9 mm and 64.7 +/- 11.2 mm, respectively; P > 0.89). The most pronounced lumbar spinal stenosis was seen on L4/5 level with D-CSD of 6.6 +/- 3.6 mm and 6.8 +/- 3.2 mm and D-CSA of 53.7 +/- 14.7 mm and 55.0 +/- 14.3 mm, respectively.
In all patients, the diagnostic quality of the reconstructed FPVCT slice images is comparable to those acquired by MSCT. Using FPVCT, radiographic myelography and postmyelographic computed tomography can be performed with less radiation in a single session at the same imaging system.
对20例患者评估平板容积计算机断层扫描（FPVCT）用于腰椎脊髓造影成像的技术可行性，并与多层螺旋计算机断层扫描（MSCT）进行比较。
本研究旨在确定FPVCT用于腰椎管狭窄症脊髓造影成像的可行性和敏感性。
在脊柱狭窄的诊断中，脊髓造影和脊髓计算机断层扫描（PCT）已常规应用近30年。旋转血管造影是一种最初为观察血管而开发的新技术，但也能提供多平面重建（MPR）CT图像。FPVCT的空间分辨率甚至高于目前的MSCT。迄今为止，该技术尚未用于脊髓造影的评估。
对20例因腰痛接受CT检查的患者，在配备平板探测器的双平面血管造影系统上进行腰椎脊髓造影。从旋转采集获得的容积数据集中获取FPVCT，并与在4层CT扫描仪上进行的MSCT进行比较。据此，对于总共100个椎间盘水平（范围从L1-L2至L5-S1），计算了MSCT和FPVCT所对应的最窄硬脊膜横截面积直径（D-CSD）和硬脊膜横截面积（D-CSA）。
MSCT测量的所有椎间盘水平的平均D-CSD和C-CSA分别为9.26±3.0mm和63.2±10.8mm。与FPVCT测量的D-CSD和C-CSA相比，差异无统计学意义（分别为9.48±2.9mm和64.7±11.2mm；P>0.89）。在L4/5水平观察到最明显的腰椎管狭窄，D-CSD分别为6.6±3.6mm和6.8±3.2mm，D-CSA分别为53.7±14.7mm和55.0±14.3mm。
在所有患者中，重建的FPVCT切片图像的诊断质量与MSCT获得的图像相当。使用FPVCT，可在同一成像系统上单次检查中以较少的辐射进行放射学脊髓造影和脊髓造影后计算机断层扫描。
