ABSTRACT
PURPOSE: To describe the use of a simple commercially available Black and Decker hand based drill in performing CT-guided bone biopsies. MATERIALS AND METHODS: Three international institutions were enrolled in the study. In each centre, a fellowship trained musculoskeletal radiologist directed the assessment of a hand based commercial drill for performing CT-guided bone biopsies. A specially designed component was engineered which allowed the connection of a standard bone biopsy set to a commercial drill. The component was distributed to the three centres involved. Over a 3-year period, data from all three institutions was collected. Information regarding technical success, diagnostic data and complication rates were all collated to assess the technical feasibility of this technique. RESULTS: In total 68 patients underwent bone biopsy using a hand held commercial drill. Technical success was achieved in 65 patients. Diagnostic material was obtained in 53 patients. Non-diagnostic material was obtained in 12 patients. Five out of the 12 patients with non-diagnostic material had repeat biopsies with diagnostic material obtained in 2 of these. No major complications occurred in any patient. CONCLUSION: CT-guided bone biopsy using a hand held commercial drill has a technically high success rate with minimal complications.
Subject(s)
Biopsy, Needle/instrumentation , Biopsy, Needle/methods , Bone and Bones/diagnostic imaging , Bone and Bones/pathology , Radiography, Interventional/methods , Surgical Instruments , Tomography, X-Ray Computed/methods , Aged , Aged, 80 and over , Equipment Failure Analysis , Female , Humans , Internationality , Male , Middle Aged , Pilot Projects , Surgery, Computer-Assisted/instrumentation , Surgery, Computer-Assisted/methodsABSTRACT
The conventional heating methods of milk did not cause any significant increase in the trans isomer content, with the exception of milk heated at 63 +/- 1.0 degrees C for 30 min and milk microwaved for 5 min, which were significantly increased by 19 and 31%, respectively. The chemical changes of lipids were generally accelerated with the severity of the heat treatment and duration of storage. The conjugated linoleic acid content of cheese heated in a microwave oven for 5 min decreased by 21%, and microwave heating for 10 min caused a decrease of 53% compared with that of freshly boiled cheese.
Subject(s)
Food Handling/methods , Hot Temperature , Linoleic Acids, Conjugated/analysis , Milk/chemistry , Trans Fatty Acids/analysis , Animals , Dairy Products/analysis , Humans , Isomerism , Linoleic Acids, Conjugated/chemistry , Microwaves , Time Factors , Trans Fatty Acids/chemistryABSTRACT
Pigmented villonodular synovitis (PVNS) is a rare benign proliferative growth of the synovium of obscure aetiology with a wide spectrum of clinical presentations and imaging findings. The purpose of this review is to acquaint the reader with the spectrum of imaging features of PVNS using a variety of imaging techniques.
Subject(s)
Magnetic Resonance Imaging , Synovitis, Pigmented Villonodular/diagnosis , Tomography, X-Ray Computed , Adult , Humans , Middle AgedABSTRACT
Baker's (Popliteal) cysts are frequently encountered on cross-sectional imaging of the knee. These consist of enlarged gastrocnemius semimembranosus bursa which typically communicate with the knee. They may be imaged with a variety of techniques including arthopgraphy, CT, ultrasound and MRI, with the latter two being more commonly used. Examples of bursa imaged with all of the above techniques are demonstrated in the essay, as well as variance of normal appearance and pathological entities including ruptured bursa, abnormally positioned bursa, osteochondromatosis, septic complications of the bursa and pigmented villonodular synovitis.
Subject(s)
Popliteal Cyst/diagnosis , Diagnosis, Differential , Humans , Magnetic Resonance Imaging , Popliteal Cyst/etiology , Popliteal Cyst/therapyABSTRACT
Von Hippel-Lindau disease is a progressive autosomal dominant disorder with multi-organ involvement. A variety of benign and malignant disease processes lie within the spectrum of disease processes associated with this condition. Early detection and treatment of complications is paramount in the management of these patients. The purpose of this pictorial review is to depict the various radiological manifestations that are commonly seen in this disease.
Subject(s)
von Hippel-Lindau Disease/diagnosis , Central Nervous System Neoplasms/diagnosis , Central Nervous System Neoplasms/diagnostic imaging , Hemangioblastoma/diagnosis , Hemangioblastoma/diagnostic imaging , Humans , Kidney Diseases/diagnosis , Kidney Diseases/diagnostic imaging , Magnetic Resonance Imaging , Pancreatic Diseases/diagnosis , Pancreatic Diseases/diagnostic imaging , Tomography, X-Ray Computed , von Hippel-Lindau Disease/diagnostic imagingABSTRACT
The purpose of this study was to review the imaging findings of three patients with bizarre parosteal osteochrondromatous proliferation of bone (BPOP). The plain radiographs and MRI images of three patients with BPOP were obtained and retrospectively reviewed. In two cases, BPOP involved the feet. In one case BPOP involved the hand. In all three cases, plain radiographs showed a well-defined calcium containing mass adjacent to the cortical surface of the adjacent bone. The underlying bone appeared normal in all cases. On MRI, the lesion was of low signal intensity on T1 weighted sequences in all cases. On FSE T2 weighted and STIR sequences, the lesion was of high signal in all cases. The cortex, medullary cavity and adjacent soft tissues appeared normal in all cases. While BPOP is rare and often confused with a variety of both benign and malignant lesions, there are specific radiological findings that may help to distinguish BPOP from many of its mimickers.
