Patient dose during carotid artery stenting with embolic-protection devices: evaluation with radiochromic films and related diagnostic reference levels according to factors influencing the procedure.

Purpose: To measure the maximum entrance skin dose (MESD) on patients undergoing carotid artery stenting (CAS) using embolic-protection devices, to analyze the dependence of dose and exposure parameters on anatomical, clinical, and technical factors affecting the procedure complexity, to obtain some local diagnostic reference levels (DRLs), and to evaluate whether overcoming DRLs is related to procedure complexity.

Materials And Methods: MESD were evaluated with radiochromic films in 31 patients (mean age 72 ± 7 years). Five of 33 (15 %) procedures used proximal EPD, and 28 of 33 (85 %) procedures used distal EPD.

Proposed local diagnostic reference levels in angiography and interventional neuroradiology and a preliminary analysis according to the complexity of the procedures.

The aim of this study was to propose local diagnostic reference levels (DRL) for exposure to radiation during diagnostic procedures and neuroradiological interventions such as cerebral angiography and embolisation of cerebral aneurysms (intra-cranial aneurysms and arteriovenous malformations). Hospitals should adopt the national DRLs for use locally or establish their own DRLs based on local practice, if sufficient local data are available. For this purpose we studied a sample of 113 cerebral angiography procedures and 82 embolisations of cerebral aneurysms.

Measurement of patient skin dose in vertebroplasty using radiochromic dosimetry film.

Study Design: We studied the radiation doses to which patients were exposed during 17 vertebroplasty operations.

Objective: The radiation doses during vertebroplasty were measured to determine maximum skin dose (MSD), a measure of the likelihood of radiation-induced skin effects.

Summary Of Background Data: Vertebroplasty is performed with use of fluoroscopic guidance for needle placement and to monitor bone cement injection.

Coronary angiography and percutaneous transluminal coronary angioplasty procedures: Evaluation of patients' maximum skin dose using Gafchromic films and a comparison of local levels with reference levels proposed in the literature.

The aim of this study was to evaluate the maximum skin dose (MSD) in patients undergoing interventional cardiology procedures, obtaining local reference levels and comparing these with the reference levels proposed in the literature. The patients' MSD was measured using Gafchromic XR type R films. In order to evaluate reference levels, the number of images acquired, the fluoroscopy times and the KAP(TOTAL) were recorded for each procedure.

Double stenting procedure and coil embolization in a patient with carotid stenosis and incidental ipsilateral intracranial aneurysm. A case report and dosimetric evaluation.

We describe a case of incidental detection of an intracranial left ICA wide-necked aneurysm during digital subtraction angiography performed to assess a sub-occlusive and calcified stenosis in the extracranial portion of the same artery. Angioplasty and stenting of ICA stenosis, plus intracranial stent deployment across the aneurysm neck was performed during the same procedure. Aneurysm coil embolization was postponed to a further session one month later.

A study on maximum skin dose in cerebral embolization procedures.

Background And Purpose: It is essential to measure the skin dose of radiation received by patients during interventional neuroradiologic procedures performed under fluoroscopic guidance, such as embolization of cerebral aneurysms, which is regarded as a high-dose interventional radiology procedure. In this study, we report a method for evaluating maximum skin dose (MSD), an ideal marker of radiation-induced effects, based on an innovative use of radiochromic films.

Materials And Methods: Forty-eight procedures were studied in 42 patients undergoing embolization of cerebral aneurysms.

[Chromosome analysis in 2 cases of Marfan's syndrome].

The results of a chromosome study conducted in 2 cases of Marfan's syndrome are reported. In one case, giant satellite corpuscles on one of the four acrocentrics of pair 21-22 were observed in all mitoses studied; in the other case, no morphologically meaningful changes were noted.