Frey P, Townsend D, Mégevand R, Spiliopoulos A, Huber O, Donath A, Jeavons A
Eur Surg Res. 1985;17(6):347-51. doi: 10.1159/000128489.
A high-density avalanche chamber positron camera was used for tomographic imaging of the human thyroid before and after partial thyroidectomy. Images were made between 6 and 24 h after oral administration of the positron-emitting radionuclide, Na-124I with activities varying between 0.1 and 0.3 mCi before the surgical intervention and with activities between 0.03 and 0.05 mCi following partial thyroidectomy. The results of thyroid imaging performed on 50 patients and their surgical relevance are discussed; as an illustration, one typical case is presented. As a consequence of the high spatial resolution of the camera (2.5 mm full width at half maximum), the functional volume of the thyroid may be estimated from the transaxial tomographic sections before and following partial thyroidectomy, correct to about 10%. The thyroid surface, defined by the contours from each transaxial section, may be displayed using three-dimensional shaded-graphics techniques. This new imaging technique makes possible a fully three-dimensional description of the thyroid in vivo and contributes significantly to the surgical follow-up.
使用高密度雪崩室正电子相机对部分甲状腺切除术前、后的人体甲状腺进行断层成像。在口服发射正电子的放射性核素Na-124I后6至24小时内成像，手术干预前其活度在0.1至0.3毫居里之间，部分甲状腺切除术后活度在0.03至0.05毫居里之间。讨论了对50例患者进行甲状腺成像的结果及其手术相关性；作为例证，给出了一个典型病例。由于相机具有较高的空间分辨率（半高宽为2.5毫米），可以根据部分甲状腺切除术前、后的横断面断层图像估计甲状腺的功能体积，误差约为10%。由每个横断面轮廓定义的甲状腺表面可以使用三维阴影图形技术显示。这种新的成像技术能够对体内甲状腺进行全面的三维描述，并对手术随访有很大帮助。
