显微超声技术治疗老年钙化根管的应用

目的：评价牙科根管显微镜配合超声技术处理老年人钙化根管的临床效果和应用方法。方法：应用显微超声技术进行根管疏通156例老年患者的患牙188个钙化根管,其中前牙根管67个,前磨牙根管59个,磨牙根管62个,应用显微超声技术进行根管疏通治疗并做初步临床记录分析,统计钙化根管疏通成功率。结果：188个钙化根管中有133个根管疏通成功并完成根管治疗,钙化根管再通成功率为70.7%。其中前牙疏通成功60个（89.6%）,前磨牙疏通成功41个（69.5%）,磨牙疏通成功32个（51.6%）。差异均有统计学意义（P〈0.05）。结论：显微超声技术是治疗老年钙化根管的有效可行的方法。     

A Comparison of Physical Examinations with Musculoskeletal Ultrasound in the Diagnosis of Biceps Long Head Tendinitis

Provocative tests are useful in diagnosing biceps tendon tendinitis. This is the first study to establish the reliability of these tests by comparing the resuts with musculoskeletal ultrasound (US) findings. This study examined 125 patients (69 women and 56 men) and 143 shoulders with shoulder pain. Yergason’s test, Speed’s test and a bicipital groove tenderness test were performed and musculoskeletal US findings were used as standard reference. Biceps tendon tendinitis was diagnosed with US in 39.1% of the patients and, of those, 55.3% had coexisting rotator cuff injury. The sensitivity and specificity of Yergason’s test were 32% and 78%, respectively. The sensitivity and specificity of Speed’s test were 63% and 58%, respectively. In conclusion, all three tests are limited by poor sensitivity. US can be an image modality choice in diagnosing biceps pathology.     

Acute Retropharyngeal Calcific Tendinitis in an Unusual Location: a Case Report in a Patient with Rheumatoid Arthritis and Atlantoaxial Subluxation

Retropharyngeal calcific tendinitis is defined as inflammation of the longus colli muscle and is caused by the deposition of calcium hydroxyapatite crystals, which usually involves the superior oblique fibers of the longus colli muscle from C1-3. Diagnosis is usually made by detecting amorphous calcification and prevertebral soft tissue swelling on radiograph, CT or MRI. In this report, we introduce a case of this disease which was misdiagnosed as a retropharyngeal tuberculous abscess, or a muscle strain of the ongus colli muscle. No calcifications were visible along the vertical fibers of the longus colli muscle. The lesion was located anterior to the C4-5 disc, in a rheumatoid arthritis patient with atlantoaxial subluxation. Calcific tendinitis of the longus colli muscle at this location in a rheumatoid arthritis patient has not been reported in the English literature.     

Achilles Tendinitis as the Presentation Form of Löfgren’s Syndrome

L?fgren's syndrome is characterised by bilateral hilar adenopathy arthritis and erythema nodosum. Achilles tendinitis as the presentation form of L?fgren's syndrome is very unusual. Herein we present a case of bilateral achilles tendinitis as the presentation form of L?fgren's syndrome.     

Demonstration of scolex in calcified cysticercus lesion using gradient echo with or without corrected phase imaging and its clinical implications

AIM: This study was performed to determine the magnetic resonance imaging (MRI) sequence that was best suited to demonstrate the scolex in a calcified lesion and to seek the explanation for the appearance of a negative phase in a calcified scolex on corrected gradient refocused echo (GRE) phase imaging. MATERIALS AND METHODS: Forty-nine patients with single/multiple computed tomography (CT) documented homogeneous calcified lesions and/or calcified scolices in cysts were studied with conventional spin echo and corrected GRE phase imaging. Calcium and different paramagnetic substances from cysticerci scolices of a sample of infected swine muscle were quantified. RESULTS: The scolex could be demonstrated in 29/39 patients with single calcified lesion. GRE imaging with an echo time of 35ms was the only sequence that demonstrated scolex in all these 29 cases. 15/29 patients with a single calcified lesion, in all 10 patients with multiple calcified lesions and infected swine muscle with multiple cysts and calcified scolex, corrected GRE phase imaging showed negative phase in all these scolices. Estimation of minerals from the calcified scolices from the swine muscle showed by spectroscopic techniques 41.2% of the total mineral contents as paramagnetic substances. CONCLUSION: We conclude that GRE imaging is the imaging method of choice for demonstration of the scolex in a CT calcified lesion. The negative phase on corrected GRE phase imaging is due to the presence of large amount of paramagnetic substances.     

冈上肌出口位摄片方法探讨

本文回顾分析了25例肩关节冈上肌出口位摄片技术参数和图像质量,探讨了冈上肌出口位的摄片方法。     

Primary osteosarcoma of the breast

The typical clinical and diagnostic imaging features of primary osteosarcoma of the breast are presented. © 1993 Wiley-Liss, Inc.     

Ultrasound diagnosis of anterior iliopsoas impingement in total hip replacement

Iliopsoas impingement syndrome, an infrequent complication of total hip replacement, has been rarely reported in the radiological literature. It follows chronic friction of the posterior aspect of the iliopsoas muscle and tendon against the acetabular cup, a piece of cement, or cup fixation screws. Clinical findings are non-specific and an imaging modality is required to diagnose the condition. Computed tomography (CT) is considered the gold standard imaging modality in evaluating iliopsoas impingement. We report a case of a patient in which the diagnosis was made by ultrasound and later confirmed by CT.