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排序方式: 共有931条查询结果,搜索用时 15 毫秒
871.
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Single-lung transplantation: imaging features 总被引:1,自引:0,他引:1
874.
Intracranial circulation: preliminary clinical results with three- dimensional (volume) MR angiography 总被引:5,自引:0,他引:5
Masaryk TJ; Modic MT; Ross JS; Ruggieri PM; Laub GA; Lenz GW; Haacke EM; Selman WR; Wiznitzer M; Harik SI 《Radiology》1989,171(3):793-799
The authors assessed the clinical utility of a magnetic resonance angiography technique in the evaluation of intracranial circulation. Eighteen patients with a low likelihood of cerebrovascular disease (control group) and 40 patients with suspected cerebrovascular disease were imaged with a FISP (fast imaging with steady precession) sequence (repetition time of 50 msec, echo time of 15 msec, velocity compensation in the read and section-select directions with acceleration compensation in the read direction, 15 degrees anisotropic volume, and a 1.25-mm partition thickness). Ninety-four percent of images in the control group and 72% of images in the group with cerebrovascular disease were considered useful for diagnosis. This technique can provide accurate images of intracranial circulation and can be performed in conjunction with two-dimensional spin-echo or gradient-echo imaging. It was most useful in the evaluation of patent intracranial aneurysms, vessel displacement, and large-vessel occlusive disease. Disadvantages included limited field of view, persistent signal voids, limited spatial resolution, and inadequate depiction of lesions with slow flow. 相似文献
875.
External irradiation for malignant thyroid tumors 总被引:2,自引:0,他引:2
876.
GA Currie 《Journal of clinical pathology》1980,33(10):1015-1016
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Three cases of catheter-induced inflammation are presented, two of which involved brain parenchyma and the ventricular system and one that involved the soft tissues of the scalp. All of the catheters were composed of natural rubber and had been in place for several years. Abnormalities seen on computed tomographic scans in these patients were variable but included mass effect, vasogenic edema, catheter destruction, calcification, and abnormal contrast enhancement of the parenchyma adjacent to the catheters. Certain features on the scans of the two patients with intracranial disease, however, were common to both cases, allowing the correct preoperative diagnosis to be made in the second patient encountered. 相似文献
880.
Thick blood syndrome 总被引:1,自引:0,他引:1
Wesenberg RL; Rumack CM; Lubchenco LO; Wirth FH; McGuinness GA; Tomlinson AL 《Radiology》1977,125(1):181