Sixteen patients with various lesions involving the brachiocephalic arteries were studied ultrasonographically. The examination was very useful in diagnosing aneurysms of the peripheral arteries and in differentiating an aneurysm from other causes of palpable pulsatile masses, such as a tortuous artery and tumor beneath an artery. The ultrasound technique used for evaluation of these lesions is described.

Computerized axial tomography with contrast enhancement is very useful for the diagnosis of brain abscesses. This fact is illustrated by a case report of a cerebellar abscess secondary to chronic mastoiditis with cholesteatoma.

International Symposium and Course on Computed Tomography: Miami Beach, Florida April 4–8, 1977: ABSTRACTS: PDF Only

Mondini defect: a variantPM Som, MT Khilnani, SL Beranbaum and BS WolfAudio Available | Share

Computed tomography of the neck will demonstrate the thyroid gland particularly well after contrast enhancement. Lucent nodules within the thyroid can be demonstrated, but the attenuation numbers are not reliable enough to distinguish cystic from solid lesions with current techniques because of partial volume effects and motion artifacts.

Computed tomography (CT) has been used in the evaluation of 36 spinal neoplasms. Eleven of the 19 intraspinal and all of the 17 paraspinal tumors showed positive CT images. Computed tomography is of diagnostic value particularly in detecting calcified meningiomas. lipomas, and neurofi-bromas with bony changes. The size of the paraspinal tumors and the degree of bone destruction can be precisely demonstrated by CT.

The location of cortical bone changes in the metacarpo-phalangeal joints has been variously described as periarticular, juxta-articular, articular, or subarticular. Suitable radiographic landmarks on anatomical specimens were sought to assess the cartilage-covered articular surfaces of these joints. Precise landmarks for the limits of the joint space are not available, but unequivocal intra-articular regions were identified.

International Symposium and Course on Computed Tomography: Miami Beach, Florida April 4–8, 1977: ABSTRACTS: PDF Only

With some models of computerized scanners, it is possible to obtain not only axial, but also coronal tomograms. This is feasible because a water bag is not used and limited tilting capacity is built into the gantry. The head is extended and the central ray directed perpendicularly to the base of the skull. The resulting views, orthogonal to the conventional axial views, furnish important complementary information.