Three-dimensional reconstruction image by biplanar stereoradiography reflects pulmonary functional states in adolescent idiopathic scoliosis. (June 2021)

• Record Type: Journal Article
• Authors: Machino, Masaaki; Kawakami, Noriaki; Ohara, Tetsuya; Saito, Toshiki; Tauchi, Ryoji; Imagama, Shiro
• Is Part Of: Journal of clinical neuroscience. Volume 88(2021)
• Page Start: 178
• Page End: 184
• Publication Date: 2021-06
• Subjects: Adolescent idiopathic scoliosis -- Biplanar stereoradiography -- 3D reconstructions -- Rib cage parameter -- Pulmonary function test; Brain -- Surgery -- Periodicals; Neurosciences -- Periodicals; Nervous system -- Surgery -- Periodicals; Brain -- surgery -- Periodicals; Neurosurgical Procedures -- Periodicals; Neurosciences -- Periodicals; Electronic journals; 616.8
• DOI: 10.1016/j.jocn.2021.03.043
• Languages: English
• ISSNs: 0967-5868

Abstract

Highlights: The biplanar stereoradiography can provide three-dimensional reconstruction images. This study investigated the rib cage parameters and pulmonary functional states. A total of 67 adolescent idiopathic scoliosis patients were enrolled in this study. Maximum width and rib-cage volume reflected pulmonary function variables. Abstract: This study investigated whether the rib cage parameters estimated based on reconstructed three-dimensional (3D) images with biplanar stereoradiography reflect pulmonary functional states in adolescent idiopathic scoliosis (AIS) patients. A total of 67 Lenke type 1 or 2 AIS patients (59 females and 8 males, mean age 14.4 years) were enrolled. All patients underwent preoperative pulmonary functional tests (PFT) and biplanar stereoradiography. Vital capacity (VC) and forced vital capacity (FVC) pulmonary functional data were collected. Rib-cage parameters (maximum thickness, maximum width, thoracic index (TI), rib hump (RH), rib-cage volume (RCV), spinal penetration index (SPI), endothoracic hump ratio (EHR), vertebra–sternum angle (VSA), rib vertebral angle difference (RVAD), and vertebral lateral decentering (VLD)) were quantified from 3D images. Patients were divided into two groups: restrictive lung disorder (RLD) (%FVC < 80%) and non-RLD (%FVC ≥ 80%). The maximum width and RCV were significantly correlated with VC (p < 0.0001), and FVC (p < 0.0001). RH, EHR, and VSA were negatively correlated with %FVC (p < 0.01). TI, SPI, and RVAD were not correlated with any pulmonary parameters. The maximum widths of RLD patients were significantly shorter than those of the non-RLD patients (218.3 mm vs. 229.7 mm, p < 0.01). The RCV of RLD patients was significantly smaller than that of the non-RLD patients (3.94 L vs. 4.49 L, p < 0.0001). The maximum width and RCV measured by 3D images with biplanar stereoradiography reflected pulmonary functional variables in patients with AIS.