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991.
992.
Introduction
The purpose of this study is to show the condition of laminar organization on 3.0T and 7.0T postmortem magnetic resonance imaging (MRI) and analyze developmental changes. 相似文献993.
目的:观察中国儿童手腕骨发育特征,为应用国外研究成果提供参考。方法:受试者为2005年骨发育调查样本2~18岁的16035名儿童。使用TW3方法评价手腕骨成熟度,与文献中的日本、欧美儿童的数据相比较。结果:中国和日本儿童的手腕骨发育特征相似。在儿童期,中国男儿童TW3-RUS和TW-腕骨成熟度延迟于欧美儿童0.3~0.6岁,女儿童在5~10岁TW3-RUS骨发育与欧美儿童非常接近;但在男12岁、女10岁以后,中国男女儿童TW-RUS骨成熟度加速而分别提前1.1~1.6岁和1.2岁。与欧美儿童相比,中国男儿童在3~10岁、女儿童在2~5岁,TW-腕骨成熟度分别延迟0.3~0.6岁和0.2~0.4岁;在男10岁和女5岁后,中国儿童TW-腕骨成熟度加速而提前,腕骨发育成熟的年龄均提前1.4岁。结论:与1970s~1990s的欧美儿童相比,中国儿童骨发育的延迟已不明显,但是青春期TW3-RUS骨发育加速提前的程度以及腕骨发育成熟年龄的提前则更加显著。 相似文献
994.
Kusuoka H Yamasaki Y Izumi T Kashiwagi A Kawamori R Shimamoto K Yamada N Nishimura T 《Annals of nuclear medicine》2008,22(1):13-21
Objective Diabetes mellitus is an independent risk factor for acute myocardial infarction. Thus, a surveillance study was conducted
as part of studies to create a national database related to electrocardiogram (ECG)-gated myocardial perfusion single-photon
emission computed tomography (SPECT) of ischemic heart disease.
Methods Single-photon emission computed tomography was conducted in patients with type 2 diabetes mellitus and their prognoses will
be followed for 3 years, stratified by patients’ clinical background and SPECT findings.
Results A total of 513 patients from 50 institutions were enrolled in this study, 297 of whom were men (age 66.2 ± 0.4 years, mean
± SEM) and 261 women (age 67.8 ± 0.5 years). They have a history of retinopathy (25.3%), neuropathy (19.9%), cerebrovascular
disorder, chronic obstructive pulmonary disease, and photocoagulation. Major risk factors for present disease were hypertension
(82.3%) and hyperlipidemia (79.7%). In 244 patients (129 men and 115 women), body mass index (BMI) was 25 or more. Fifty-two
of them (10.1%) underwent coronary angiography; of these, 26 (50.0%) had no coronary artery lesions with 75% or more stenosis,
and only 1 (1.9%) had a left main trunk with 50% or more stenosis. An overwhelming majority of patients (94.3%) underwent
SPECT imaging by a 1-day stress-followed-by-rest procedure. Stress procedure was exercise in most (70.8%) patients, followed
by dipyridamole infusion in 14.6%, adenosine infusion in 6.6%, and adenosine triphosphate infusion in 5.7%. Endpoint of stress
examination was most often fatigue in lower limbs (40.7%), followed by completion of pharmacological stress protocol (28.7%),
and achievement of target heart rate (26.3%). The largest number of patients (198, 38.6%) received 99mTc-tetrofosmin at an initial dosage of 200–300 MBq (mean 331 ± 3 MBq) followed by a second dosage of 700–800 MBq (mean 748
± 8 MBq). Among them, 491 (95.7%) received some kind of therapeutic drug: hypoglycemic drugs were used by the largest number
(83.2%), followed by hypotensive (66.7%), hypolipidemic (40.7%), and antiplatelet drugs (27.7%), vasodilators (5.5%), and
antioxidants and others (2.3%).
Conclusions This study was designed to clarify the correlation between coronary artery disease and diabetes mellitus as its risk factor
based on the clinical and imaging findings. Patient enrollment was closed on September 30, 2005, and follow-up is now under
way. 相似文献
995.
996.
Erturhan S Seçkiner I Zincirkeser S Erbagci A Celik M Yagci F Karakok M 《Annals of nuclear medicine》2008,22(3):225-229
Primary renal synovial sarcoma is a rarely seen renal neoplasm. An experienced uropathologist is needed to make the pathological diagnosis. A patient, operated on with a prediagnosis of renal cell carcinoma, the pathology of which was reported as synovial sarcoma, is presented in this article. 18F-fluoro-deoxyglucose positron emission tomography and computed tomography were performed preoperatively and in the postoperative follow-up to detect the primary tumor and lymph node metastases. 相似文献
997.
Folpe AL 《Skeletal radiology》2007,36(9):899-900
998.
999.
MR imaging of the alar ligament: morphologic changes during axial rotation of the head in asymptomatic young adults 总被引:2,自引:0,他引:2
OBJECTIVE:. The alar ligament plays a critical role in limiting the axial rotation of the head, the left alar ligament being stretched on rotation to the right and vice versa. The purposes of this study were to assess the usefulness of MR imaging in demonstrating the alar ligament and also to identify its morphologic changes during axial rotation of the head in asymptomatic young volunteers. DESIGN AND PATIENTS:. Twenty-two healthy volunteers participated in this study. All subjects underwent four series of contiguous fast spin echo density-weighted MR images with a 2 mm slice thickness including axial and coronal images with the head in neutral position, and coronal images with alternate head rotation to the right and left. The alar ligaments seen on each series of MR images were visually graded 0-2, and grade comparisons were performed between the four series of MR images. We also assessed the morphologic changes of the alar ligament on coronal images during axial rotation of the head. RESULTS:. Grade comparisons for the demonstration of the alar ligament revealed that each of three series of coronal images was statistically significantly better in grade than axial images. During axial rotation of the head, MR images showed rather constant morphologic changes of the alar ligament: elevation and wrapping of the contralateral alar ligament around the dens, associated with slightly upward movement of C1-C2 on that side. This wrap-around effect of the contralateral alar ligament in relation to the dens sometimes caused the apparent shortening of the alar ligament on that side. CONCLUSION:. Reliable assessment of the anatomy and function of the alar ligament can be achieved with MR imaging, preferably in coronal planes. MR imaging with the aid of a functional study may be a valuable imaging modality in the evaluation of alar ligament failure. 相似文献
1000.