Value of anteroposterior radiography in cervical pain of non-traumatic origin.
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Cervical Vertebrae↗
Biomedical subjects
J F Olliff
Publications and source records attributed to J F Olliff.
Computed tomography and magnetic resonance imaging of dilated lumbar lymphatic trunks.
We report a patient in whom computed tomography (CT) scanning demonstrated bilateral para-aortic lesions, originally misinterpreted as lymphadenopathy, but shown by a combination of CT, lymphangiography and magnetic resonance imaging to represent dilated lumbar lymphatic trunks. This case illustrates a further para-aortic lesion which may be mistaken for lymphadenopathy on cross-sectional imaging.
Adult↗
Radiological appearances of cytomegalovirus infections.
The chest and abdominal radiographs of 35 patients with cytomegalovirus (CMV) infection were reviewed. The radiological appearances of cytomegalovirus pneumonia varied widely with no pattern sufficiently characteristic to allow early differentiation of CMV from other infective agents. Spontaneous pneumothorax and pneumomediastinum were seen frequently in association with advanced CMV pneumonia. Abdominal abnormalities included bowel wall thickening, dilated bowel loops and pneumatosis intestinalis.
Adolescent↗
Magnetic resonance imaging of spinal amyloid.
This report describes a patient with a history of breast carcinoma who presented with back pain and multiple collapsed vertebrae. Magnetic resonance imaging (MRI) demonstrated a diffuse bone marrow abnormality, more in keeping with an infiltrative process than with metastases. A bone biopsy confirmed the suspected diagnosis of vertebral involvement by amyloid.
Amyloidosis↗
Bladder cancer: staging with CT and MR imaging.
Magnetic resonance (MR) imaging and computed tomography (CT) were compared in 30 patients with histologically proved bladder cancer. MR imaging was accurate in depicting the presence or absence of extravesical spread in 22 patients (accuracy, 73%; sensitivity, 82%; specificity, 62%), and CT was accurate in 24 patients (accuracy, 80%; sensitivity, 94%; specificity, 62%). The MR examinations of two patients were of undiagnostic quality and therefore considered to be technical failures. Each technique resulted in five false-positive and one false-negative examination for the diagnosis of extravesical tumor spread. In 28 patients the integrity of the bladder wall was assessed with MR imaging. In 22 patients the bladder wall was disrupted, and 18 of these patients had deep muscle invasion. In six patients the bladder wall was intact, and none of these patients had evidence of deep muscle invasion at pathologic examination. In this study MR imaging was slightly inferior to CT in the delineation of invasive tumors beyond the bladder wall. However, if one excludes from analysis the two patients with undiagnostic studies, there is no significant difference in accuracy between the two techniques.
Adult↗
CT and MR findings in parameningeal leukaemic masses.
This study presents the clinical and imaging findings in seven patients with parameningeal leukaemic masses: four adults with granulocytic sarcoma and three children with soft tissue masses from acute lymphoblastic leukaemia. Computed tomography and magnetic resonance imaging were helpful in detecting these masses and in showing their extent. Magnetic resonance was particularly valuable in demonstrating abnormal bone marrow in the adult patients with granulocytic sarcoma. Computed tomography was valuable in demonstrating leukaemic relapse in the children when examination of CSF or bone marrow showed no evidence of leukaemia.
Adult↗
[Comparative evaluation of computerized tomography/magnetic resonance (1.5 T) in the detection of brain metastasis].
Forty-four patients with small cell carcinoma of the bronchus underwent CT and MR studies of the brain to detect cerebral metastases. All patients were studied with contrast-enhanced CT scans, short (T1-weighted) and long (T2-weighted), spin-echo (SE) and FLASH 90 degrees MR sequences. Gd-DTPA enhanced SE-T1 and FLASH 90 degrees sequences were also obtained. A quantitative comparison of the results was carried out to assess the sensitivity of the different techniques in the detection of brain metastases according to lesion diameter. Metastases were identified in 19/44 patients (43%). All techniques detected the lesions greater than 2 cm; of the metastases less than 2 cm, 63/124 (51%) were detected only by Gd-DTPA SE-T1 and FLASH sequences and 11 more (9%) only by Gd-DTPA SE-T1 scans. All the lesions identified on enhanced CT scans or on T2-weighted images were easily detected by Gd-DTPA scans. CT sensitivity was higher than that of pre-contrast SE-T1 and FLASH studies and only slightly lower than that of T2-weighted images. As for lesions less than 2 cm, Gd-DTPA T1-weighted sequences had the highest detection rate (124 lesions) versus Gd-DTPA FLASH 90 degrees scans (113 lesions) and precontrast T1-weighted scans (45 lesions). When comparing Gd-DTPA SE-T1 and FLASH 90 degrees sequences in the detection of lesions less than 1 cm, we observed that the latter missed 9% of metastases, mainly due to a high rate of magnetic susceptibility artifacts and to lower contrast resolution. Therefore, Gd-DTPA SE-T1 images still remain the most accurate technique in the assessment of cerebral metastases.
Adult↗