Fulbright R, Panush D, Sze G, Smith R C, Constable R T
Department of Radiology, Yale University School of Medicine, New Haven, Conn. 06510.
AJNR Am J Neuroradiol. 1994 Apr;15(4):767-73.
To compare conspicuousness of head and neck lesions on fast spin-echo sequences and conventional spin-echo sequences.
Forty consecutive patients with 61 head and neck lesions were evaluated. Lesion conspicuousness was qualitatively compared on conventional spin-echo and fast spin-echo sequences, using both spin-density and T2-weighted images. Thirty-six lesions had surgical or pathologic confirmation, and 25 were assigned a presumptive diagnosis based on clinical evaluation and imaging findings seen on conventional spin-echo T1- and T2-weighted sequences. Forty lesions were related to neoplasms; 21 lesions consisted of infectious, vascular, or inflammatory abnormalities.
Fast spin-echo sequences provided improved lesion conspicuousness in 91% of spin-density images, in 77% of T2-weighted images, and in 84% of the combined spin-density and T2-weighted images.
By providing shorter imaging times and equal or superior lesion conspicuousness, long-repetition-time fast spin-echo sequences can replace long-repetition-time conventional spin-echo sequences in evaluation of the head and neck.
比较快速自旋回波序列和传统自旋回波序列上头颈病变的显见度。
对连续40例患有61处头颈病变的患者进行评估。使用自旋密度和T2加权图像，在传统自旋回波和快速自旋回波序列上对病变显见度进行定性比较。36处病变有手术或病理证实，25处根据临床评估和传统自旋回波T1加权及T2加权序列上的影像学表现给出初步诊断。40处病变与肿瘤有关；21处病变包括感染性、血管性或炎性异常。
在91%的自旋密度图像、77%的T2加权图像以及84%的自旋密度和T2加权联合图像中，快速自旋回波序列提高了病变显见度。
通过提供更短的成像时间和同等或更高的病变显见度，长重复时间快速自旋回波序列在头颈评估中可取代长重复时间传统自旋回波序列。
