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Computed tomography (CT) may more accurately assess the healing of grafted osteolytic lesions around acetabular components compared with plain radiographs, although clinical validation is lacking. To determine whether clinical or micro-CT imaging could assess accurately the grafted lesion compared with histology, we therefore quantified bone healing and ingrowth to determine...

Conclusions We have developed an easy, reliable and practical method to measure the rotation of the spinal anterior component using a CT scan. Furthermore, we quantified the spinal torsional deformity to the convex side in scoliosis by comparing the rotation between the anterior and posterior components.
A new method for measuring torsional...

Conclusion: The clinical diagnosis had a poor association with radiologic abnormalities. Despite an increase in the number of MRI and CT scans, the number of patients deemed surgical candidates has not changed.
Effect of increased MRI and CT scan utilization on clinical decision-making in patients referred to a surgical clinic for back pain
Adrienne...

Percutaneous sacro-iliac (SI) screw fixation represents a widely used technique in the management of unstable posterior pelvic ring injuries and sacral fractures. The misplacement of SI-screws under fluoroscopic guidance represents a critical complication for these patients. This study was designed to determine the prevalence of sacral dysmorphia and the radiographic...

We report a case of intra-articular fracture of the knee joint showing three layers within lipohemarthrosis. Sagittal ultrasonography showed three layers (double fluid-fluid level): a superior hyperechoic layer of fat, an intermediate anechoic layer of serum, and an inferior hypoechoic layer of red blood cells. Horizontal computed tomography imaging demonstrated...

The treatment of asymptomatic osteolysis among well-fixed cementless cups remains controversial. To compare the effectiveness of different treatment strategies, an objective technique for evaluating bone remodeling would be useful. By matching and comparing serial CT images with the aid of a computer-assisted imaging program, we developed a method to evaluate...

Created by Godfrey Hounsfield in 1972. He won a Nobel prize in 1979.
The CT image is created by revolving an XR tube around the patient at high speed, opposite a stationary ring of detectors of very high sensitivity.
  Because of the sensitivity of the detectors a wide range of densities...

We identified incidental CT findings in 230 of 1,256 patients (18.3%) who underwent CT of the cervical spine during an initial trauma evaluation. We stratified the incidental findings as trauma-related and not trauma-related. The likelihood of non-trauma-related incidental findings was associated with age (p <0.0001). The likelihood of trauma-related...

Radiology case 378-1243 Clinical presentation: Patient with haematuria and undergoing CT scan. Intravenous injection of contrast was given a lower limb vein.
The images shows an irregular filling defect in the inferior vena cava. The partial block of the vena cava has forced contrast into collateral veins. Among these are extradural...

ACR-code 338-84 Four cases of patients in late middle age with back pain.
The first image shows increased density in the vertebra with loss of fine detail and a coarse zone of increased density making a thickened rim around the vertebra, a 'picture frame' vertebra. The CT cuts show irregular variation...

Radiology case 4642-3181 20 year old woman with sudden onset of pain in the right ankle, which prevented her from standing on that leg.
Lateral and oblique views show an area of low bone density in the calcaneum, greater and denser than the normal variant. It has a sclerotic, well-defined and...

A 25-year-old man presented to the emergency department because of pain and swelling of the left knee after a motorcycle accident that had occurred 2 days earlier. He had no previous significant clinical or surgical history. Clinical examination suggested the presence of joint effusion in the suprapatellar pouch, with severe...

Radiology cases 321-328. Clinical presentation: Acute onset of back pain and leg weakness in a 55 year old man.
The upper cuts, above the carina and aotic arch, in this computed tomography series show contrast in the theca ending at an obstructing soft-tissue mass in the canal. The relative lucency of the...