Ringl Helmut, Lazar Mathias, Töpker Michael, Woitek Ramona, Prosch Helmut, Asenbaum Ulrika, Balassy Csilla, Toth Daniel, Weber Michael, Hajdu Stefan, Soza Grzegorz, Wimmer Andreas, Mang Thomas
Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria,
Eur Radiol. 2015 Jul;25(7):1865-74. doi: 10.1007/s00330-015-3598-2. Epub 2015 Feb 14.
To assess a radiologist's detection rate of rib fractures in trauma CT when reading curved planar reformats (CPRs) of the ribs compared to reading standard MPRs.
Two hundred and twenty trauma CTs (146 males, 74 females) were retrospectively subjected to a software algorithm to generate CPRs of the ribs. Patients were split into two equal groups. Sixteen patients were excluded due to insufficient segmentation, leaving 107 patients in group A and 97 patients in group B. Two radiologists independently evaluated group A using CPRs and group B using standard MPRs. Two different radiologists reviewed both groups with the inverse methods setting. Results were compared to a standard of reference created by two senior radiologists.
The reference standard identified 361 rib fractures in 61 patients. Reading CPRs showed a significantly higher overall sensitivity (P < 0.001) for fracture detection than reading standard MPRs, with 80.9% (584/722) and 71.5% (516/722), respectively. Mean reading time was significantly shorter for CPRs (31.3 s) compared to standard MPRs (60.7 s; P < 0.001).
Using CPRs for the detection of rib fractures accelerates the reading of trauma patient chest CTs, while offering an increased overall sensitivity compared to conventional standard MPRs.
• In major blunt trauma, rib fractures are diagnosed with Computed Tomography. • Image processing can unfold all ribs into a single plane. • Unfolded ribs can be read twice as fast as axial images. • Unfolding the ribs allows a more accurate diagnosis of rib fractures.
评估放射科医生在阅读肋骨曲面重组（CPR）图像与标准多平面重组（MPR）图像时，对创伤CT中肋骨骨折的检出率。
回顾性分析220例创伤CT（男性146例，女性74例），利用软件算法生成肋骨CPR图像。将患者平均分为两组。16例患者因分割不足被排除，A组剩余107例患者，B组剩余97例患者。两名放射科医生分别独立使用CPR图像评估A组，使用标准MPR图像评估B组。另外两名不同的放射科医生以相反的方式对两组进行评估。结果与由两名资深放射科医生制定的参考标准进行比较。
参考标准在61例患者中识别出361处肋骨骨折。阅读CPR图像时骨折检出的总体敏感度显著高于阅读标准MPR图像（P＜0.001），分别为80.9%（584/722）和71.5%（516/722）。与标准MPR图像（60.7秒）相比，CPR图像的平均阅读时间显著更短（31.3秒；P＜0.001）。
使用CPR图像检测肋骨骨折可加快创伤患者胸部CT的阅读速度，同时与传统标准MPR图像相比，总体敏感度更高。
• 在严重钝性创伤中，肋骨骨折通过计算机断层扫描诊断。• 图像处理可将所有肋骨展开至单一平面。• 展开的肋骨阅读速度比轴向图像快两倍。• 展开肋骨有助于更准确地诊断肋骨骨折。
