[Comparison of the results obtained using 99mTc HM-PAO tomoscintigraphy and computer tomography in ischemic lesions of the brain]. / Confronto tra i risultati ottenuti con la tomoscintigrafia con 99mTc HM-PAO e con la TC nelle lesioni ischemiche cerebrali.

Fifty patients suffering from cerebral ischemic attacks, transient or not, were studied with both 99mTc HM-PAO single photon emission computed tomography (SPECT) and computed tomography (CT). In 31 patients both SPECT and CT showed pathologic areas, the max diameters of which were measured on CT images and SPECT orbitomeatal reconstructed sections, and then compared. We observed that: only SPECT images are positive for pathologic conditions in transient ischemic attacks and in the very early phases of infarctions; in recent infarctions (less than 15 days earlier) both SPECT and CT scans are positive but SPECT lesion areas are greater than CT ones; pathologic areas, with clear-cut outlines, having the same dimensions on both CT and SPECT images, are supposed to result from old static infarctions. A persistent perilesional hypoactive area on SPECT images means, in our opinion, a hypoperfusional area liable to new vascular troubles; in which case, medical/surgical therapy seems necessary.

[Lumbar phlebography: methodological choice and reliability in the radiographic study of lumbar disk hernias]. / La flebografia lombare: scelta metodologica ed affidabilitá nello studio radiografico dell ernie discali lombari.

Lumbar epidural venography was used as the examination of choice in the investigation of suspected disc herniation in 270 patients. Compression or occlusion of an epidural and/or radicular vein at the disc level is the most significant venographic abnormality. In 110 patients operated on, the reliability of lumbar epidural venography was equal to 97.2%.

[Radiological study of non-neoplastic renal expansive processes (author's transl)]. / Lo studio radiologico dei processi espansivi renali non neoplastici.

The radiological aspects of non-neoplastic renal expansive processes are reviewed and discussed, particular attention being paid to indications for the various investigation techniques and differential diagnosis. Numerous examples are reported.

[Radiological study of the neoplastic bladder]. / Lo studio radiologico della vescica neoplastica.

Radiological methods useful in the examination of bladder tumours are reviewed, with particular reference to preoperative evaluation in accordance with the system. Examples are drawn from a personal series.