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Biomedical subjects

F Gattoni

Publications and source records attributed to F Gattoni.

At least 55 records · Page 3Linked to original sources
PubMed1988

[Percutaneous transluminal laser angioplasty. Initial clinical experience in 9 patients].

In this paper the authors report on a new technique--percutaneous transluminal laser angioplasty (PLR) which was performed on 9 patients with iliac and/or femoro-popliteal artery occlusion. All patients were males (mean age: 64.5 years) and had arterial occlusion (mean length: cm 12.5). PLR was performed with an argon laser (max power: 16 Watts). In 8 out of 9 patients (88.8%) a complete recanalization was obtained of the occluded arterial tract, without complications. In one case only (12.2%) there was an arterial wall perforation with unsatisfactory results. In our opinion, PLR has proven a simple methodology, which can be performed on any patient due to the very low incidence of severe complications and distal embolism. Moreover, PLR has quite low costs, and does not prevent eventual surgical/percutaneous interventions.

Aged↗
PubMed1987

[Use of magnetic resonance in patients with portal hypertension before and after diversion intervention. Initial experience in 15 cases].

Fifteen patients with portal hypertension were examined by magnetic resonance imaging (MRI) using spin-echo sequences. Sagittal and transaxial images were obtained in all cases. Ten subjects have been evaluated after portosystemic shunt operations (6 portocaval and 4 splenorenal shunts); 5 patients were studied by MRI before shunt placements. Angiographic correlation was obtained in 15 cases. In each of the preoperative examinations, MRI accurately depicted inferior vena cava, portal vein and splenic vein. Shunt patency was documented in 10/10 postoperative studies: portacaval shunts patency was better determined in the transaxial plane while splenorenal shunts were better demonstrated in the sagittal plane. Thus, MRI seems to be an accurate and noninvasive method for detecting portosystemic shunt patency without the use of intravenous contrast media and without patient exposure to radiation.

Adult↗
PubMed1987

[Echocardiographic gating in non-cardiac digital angiography].

This paper reports the results of the ECG-gating in non-cardiac digital subtraction angiography (DSA). One hundred and fifteen patients underwent DSA (126 examinations); ECG-gating was applied in 66/126 examinations: images recorded at 70% of R wave were subtracted. Artifacts produced by vascular movements were evaluated in all patients: only 40 examinations, carried out without ECG-gating, showed vascular artifacts. The major advantage of the ECG-gated DSA is the more efficient subtraction because of the better images superimposition: therefore, ECG-gating can be clinically helpful. On the contrary, it could be a problem in arrhythmic or bradycardic patients. ECG-gating is helpful in DSA imaging of the thoracic and abdominal aorta and of the cervical and renal arteries. In the examinations of peripheral vessels of the limbs it is not so efficient as in the trunk or in the neck.

Adult↗
PubMed1987

Angioscintigraphic assessment of arterial and portal liver blood flow: comparison with splanchnic angiography.

In order to validate an angioscintigraphic method for the evaluation of the components of hepatic blood flow, the results of angioscintigraphy were compared with splanchnic angiography in 25 cirrhotics. Two indices of hepatic portal perfusion and a splenohepatic arterial index were calculated. These were correlated with portal diameter and hepatic artery diameter, respectively. No correlation was found between grades of portal perfusion according Nordlinger's criteria and these indices. The method is very simple and could be applied to evaluate the changes of liver hemodynamics induced by drugs or shunt surgery.

Adult↗
PubMed1986

In vivo study of the complement system during infusion of radiographic contrast media.

It has been claimed that activation of the complement system may play a role in reaction to radiographic contrast media (RCM) infusion. In order to clarify the effects of RCM on the complement system, three different parameters (CH50, C3a, and C1 inhibitor) were measured in 20 patients undergoing intravenous pyelography for diagnostic purposes. We found no significant changes in C3a levels, but CH50 and C1 inhibitor fell significantly at the different sampling times; however, the decreases lost significance when the data were corrected for hemodilution with the total protein content of each sample as a reference. We conclude that RCM infusion does not activate the complement system.

Complement Activation↗
PubMed1986

[Postoperative intravenous digital angiography of the carotid].

Intravenous digital angiography was performed in 55 patients previously submitted to carotid endarterectomy. The angiographic examination was performed in asymptomatic subjects in 43/55 cases, as a routine procedure. In 12/55 cases (22%) the examination was performed following an ischemic recurrency. In 27 patients (49%), digital angiography was repeated before and after surgery, giving the opportunity of a serial evaluation of the vascular pattern. The angiographic findings in the site of operation was normal in 49/55 patients; in 6 patients (12%) steno-occlusive recurrencies were observed. In 21/55 cases (38%) carotid stenosis on the opposite side was demonstrated, owing to the pan-angiographic effect of intravenous contrast administration: among these cases, 18 appeared angiographically normal at the operation site. The clinico-angiographical correlation resulted fairly good (41/55-75%), taking into account the fraction of patients with contralateral carotid stenosis and neurological symptoms. Intravenous digital angiography is proposed as a first-choice diagnostic procedure for the follow-up after carotid surgery.

Arteriosclerosis↗
PubMed1986

[Efficiency of tetracaine in digital angiography of the blood vessels of the neck].

Deglutition artifacts often degrade diagnostic quality in digital subtraction angiography (DSA) of neck vessels. In order to reduce this drawback, the authors gave a local anesthetic (Tetracaine) to the patients undergoing DSA of aortic arch and carotid arteries. Hundred-twenty-three subjects divided into two groups were examined: Tetracaine was administered to one group (64 patients) and not to the other (59 cases). In the first group deglutition artifacts were not noted in 59/64 cases. Among those patients not treated with Tetracaine/deglutition artifacts were absent in 45/59 cases. This local anesthetic did not produce important toxic reactions. Therefore the authors believe that administration of local anesthetics can reduce deglutition artifacts in DSA of neck vessels.

Anesthesia, Local↗
PubMed1985

[Periarticular calcifications. A little-known sign of psoriatic arthritis].

The hands of 40 patients with psoriasis were examined by conventional and direct magnification radiograms. In 5 cases the hands showed typical psoriatic arthropathy. In 5 other cases only small calcifications in the soft tissues at distal interphalangeal joints were visible: according to clinical and laboratory data, these lesions could be in connection with psoriatic arthritis.

Adolescent↗
PubMed1985

Esophagogastroplasty and its radiological approach.

Sixty-six patients with tumor of the distal esophagus and/or the gastric fundus were admitted for intrathoracic esophagogastroplasty. Surgical mortality was 6% (4 of 66 cases). There were 3 early and 7 late complications among the 62 remaining patients. The authors suggest that radiological examinations of patients after esophagogastroplasty should include an early examination on the 7th-10th day after surgery with water-soluble contrast medium for detection of early complications and double-contrast studies before dismissal, at later check-ups and whenever clinical symptoms of late complications are developing.

Adenocarcinoma↗
PubMed1985

[Intra-arterial digital angiography of the liver and portal system].

Twenty-seven patients were evaluated by intra-arterial digital subtraction angiography: 20 for portal hypertension--6 also after a porto-systemic shunt--, 4 for evaluation of a hepatic mass and 3 for pancreatic or biliary tumours. Intra-arterial DSA has always shown vascular abnormalities. The advantage of intra-arterial DSA are reduction of the required amount of contrast medium and, consequent, reduction of the frequency of contrast medium reactions. Its disadvantages are limited field size of image intensifier and reduced spatial resolution as compared with conventional angiography. However diagnosis had never been affected by this limitation.

Adult↗
PubMed1983

[Pharmaco-radiodiagnosis of the digestive tract].

A brief account of the subject from the chronological standpoint is followed by a classification of the drugs most often used in radiological examination of the digestive tract into two groups according to their effects on individual viscera, namely excitomotor and hypotonising drugs. The indications and contraindications for each drug are explained, and the most common methods for the pharmacoradiological investigation of each organ are indicated. It is felt that this form of examination leads to an earlier radiological diagnosis and one more consonant with the real anatomical and pathological situation.

Depression, Chemical↗
PubMed1982

[Thermography in the follow-up of bone and soft tissue tumors].

Thermography was used for the follow-up of 16 cases of bone tumors and of 16 cases of soft tissue tumors, after conservative treatments (surgery and/or radio- and chemio-therapy). The hyperthermia, which corresponds to the primary tumor, underwent a marked reduction during the first six months after the treatment. The thermographic picture appeared normal at the first follow-up of 12/16 bone tumors and of 9/16 soft tissue tumors. The presence of local recurrencies, at 12 months distance or more, corresponded to a new hyperthermic spot and to the increase of local vascularity. Thermography is proposed as a simple and harmless procedure for the follow-up of bone and soft tissue tumors after conservative treatments.

Adolescent↗
PubMed1981

Xeroradiography of soft tissue tumors.

The main features of 300 consecutive cases of soft tissue tumors at xeroradiography were submitted to retrospective evaluation. The parameters assessed were: visibility, density, shape, size, outline and relationships of the lesions. The distribution of each parameter between benign and malignant tumors was evaluated by means of statistical analysis. The xerographic signs of malignancy of soft tissue tumors are reviewed and the typical features of some particular tumors are outlined.

Diagnosis, Differential↗
PubMed1980

Lipoblastic tumours of somatic soft tissues: a xerographic evaluation of 67 cases.

The role of xeroradiography for the diagnosis and the clinical evaluation of lipoblastic tumours of somatic soft tissues was investigated in 67 patients. Xeroradiography improved the visibility of soft tissues over film radiography in 20 out of the 23 cases in which both examinations were performed. The xeroradiographic characters of a lipoblastic tumour depend on its nature, thus irregular and infiltrative masses are usually liposarcomas, while regular and rounded nodes are usually pure or mixed lipomas. Moreover, pure lipomas are always radiolucent and liposarcomas are always radiopaque. Xeroradiography is regarded as a promising first technique in the diagnosis of lipoblastic tumours, before more complex investigations, like computed tomography (CT) scanning or arteriography, are undertaken.

Evaluation Studies as Topic↗