Search PubMed⌕ Search

Biomedical subjects

G Dal Pozzo

Publications and source records attributed to G Dal Pozzo.

At least 37 records · Page 2Linked to original sources
PubMed1990

Subcortical arteriosclerotic encephalopathy: single photon emission computed tomography-magnetic resonance imaging correlation.

Regional cerebral blood flow was studied using 99mTc-HM-PAO and single photon emission computed tomography (SPECT) in five healthy subjects and in eight patients with clinical and computed tomography (CT) features of subcortical arteriosclerotic encephalopathy. All the patients and controls underwent magnetic resonance imaging (MRI). Circumscribed cortical hypoperfusion was observed in three patients, and in one case there was no evidence of cortical or sulcal alterations on MRI. In all the patients, a reduction of the white matter perfusion was found in periventricular and/or supraventricular regions. This pattern was substantially correlated with the typical white matter hyperintensities shown by MRI scans. These findings support the hypothesis that white matter hypoperfusion is the most prominent functional abnormality in subcortical arteriosclerotic encephalopathy.

Aged↗
PubMed1989

Computed tomography, magnetic resonance imaging and pathological correlations in a case of Binswanger's disease.

The results of 3 computed tomography (CT) examinations carried out over a 7 year period and of a post-mortem magnetic resonance (MR) study showed aspects of a white matter disease in a hypertensive patient suffering from vascular dementia. Histopathology revealed the primary cause of dementia to be a white matter degeneration sparing the U fibers. Rarefaction of both the myelin sheaths and the axons was present together with severe thickening of the medullary arteries. These findings support the existence of Binswanger's disease (BD) as a distinct variety of arteriosclerotic dementia. CT and MR imaging are valuable aids for diagnosis. However, since there are many other causes of CT and MR demonstrated diffuse white matter degeneration in the elderly, a conclusive diagnosis of BD requires pathological confirmation.

Dementia, Vascular↗
PubMed1989

[Magnetic resonance in the study of spondylodiscitis].

Spondylodiscitis is an uncommon pathologic condition whose diagnosis can be difficult due to its aspecific clinical and radiological signs, especially in its early phase. Seventeen patients were examined in order to evaluate MR diagnostic capabilities. They had cervical (2 cases), thoracic (3 cases) and lumbosacral (12 cases) spondylodiscitis. All patients previously underwent conventional X-ray examination and CT; bone scintigraphy was performed in 9 cases. The final diagnosis was reached by needle aspiration (10 cases), by blood culture (2 cases), or according to clinical evolution (5 cases). MR was highly sensitive in identifying the disease, also in its early stages. Moreover, MR allowed the definition of phlogistic process extent and its relationship with intersomatic disk: signal alterations were limited to the vertebral bodies and to the disk in 3 cases; endocanalar spread of phlogistic process was observed in 8 cases; extravertebral soft tissues were involved in 1 patient; involvement of both canal and paravertebral soft tissue was found in 5 patients. Signal alterations in vertebral bodies and disks, together with the good topographic evaluation obtained with MR imaging, allowed a reliable diagnosis of spondyloscitis to be reached.

Adult↗
PubMed1988

[Gadolinium DTPA in a MR study of expansive lesions of the cranial base].

Twenty-five patients were investigated by MR imaging in order to evaluate the diagnostic value of Gadolinium (Gd)-DTPA in skull-base tumors. The patients were studied with standard acquisition techniques (T1, mixed and T2-weighted images) without contrast medium. The images obtained were then compared with the T1-weighted images obtained after intravenous injection of Gd-DTPA. The contrastographic results in the different types of acquisition were evaluated. Thanks to the extraordinary increase in contrast resolution it provides, Gd-DTPA allowed the precise evaluation of the lesion and of its perfect spatial definition in all cases. Our experience demonstrated that Gd-DTPA considerably increases the sensitivity of the technique in this anatomical region. On the contrary, as regards the nature of the lesion, the signal did not significantly vary after the iv injection of Gd-DTPA in the various kinds of lesion. In addition to the important diagnostic advantages of Gd-DTPA, its excellent tolerability and the absence of side-effects must be stressed.

Adenoma↗
PubMed1988

[Magnetic resonance imaging in the study of brain changes due to carbon monoxide poisoning].

Five cases of carbon monoxide intoxication were studied with MR imaging. The main MR findings were discussed and compared with CT results. MR imaging demonstrated SNC lesions sooner and better than CT--its images corresponding to the anatomic-pathological patterns described in literature. However, severe MR limitations--i.e., the very long execution time and the difficult monitoring of the patients--prevent this methodology from being more extensively employed in this kind of pathology.

Accidents, Home↗
PubMed1986

Divergence pseudoparalysis: a case report.

Divergence paralysis is a clinical syndrome that is characterized by esotropia and diplopia at distance fixation and fusion at near fixation. This syndrome is thought to result from a lesion in the brain stem, probably in the midbrain or in the pontine region. This paper reports a case in which ocular motility disturbances, simulating divergence paralysis, were caused by a bilateral and symmetrical restrictive syndrome involving the medial rectus muscles.

Esotropia↗
PubMed1985

[Magnetic resonance and computerized tomography in the study of hypophyseal adenomas. Comparative results].

Magnetic resonance evaluation of 28 cases of pituitary adenomas has shown remarkable accuracy. Compared with HR-CT, MR gives comparable results in tumour identification. MR better demonstrates the suprasellar extension of macroadenomas and their relationship to the visual pathway and is more effective in showing direct and indirect signs of microadenomas. HR-CT however better recognized bone abnormalities of the sella turcica, due to adenomas. A typical increased signal intensity has been demonstrated in most of the adenomas studied.

Adenoma↗
PubMed1985

CT identification of coeliac ganglia.

The authors achieved the "in vivo" identification of the coeliac ganglia (C.G.), using computerised tomography (CT). This result was confirmed by autopsies and by CT scans of an anatomical specimen in which the coeliac ganglia had been previously marked. CT allows an exact location of the coeliac ganglia and can be very useful for a precise alcoholic neurolysis of the coeliac plexus.

Ganglia, Sympathetic↗
PubMed1982

Computed tomography role in massive thoracic extramedullary haematopoiesis.

A mediastinal mass consisting of haematopoietic tissue and situated in the paravertebral area has been demonstrated in an osteomyelosclerotic patient with diffuse extramedullary haematopoiesis. The internal structure of the mediastinal mass was shown by CT, so a correct diagnosis was made without any invasive procedure.

Hematopoiesis↗