Published papers show limitations of scans, MRIs, ionic x-rays, contrast dyes, causing side effects. The latter, lists strokes, heart attacks, angina as possible side effects. Galdolinium, commonly used contrast dye is known to cause to nephrogenic fibrosing dermopathy (NFC). Apparently, it can appear even five years later. Reports of many with healthy kidneys prior to being administered contrast dye, complain of sub optimal functioning kidneys, some of failing kidneys, others of angina, chest pains, and heart attacks.

Below is a paper showing scans causing disturbance in the blood brain barrier, linking bleeding/strokes to scan as well as causing damage to the endothelial cells.

Blood-Brain Barrier Disruption By Low-Frequency Ultrasound
Matthias Reinhard, MD; Andreas Hetzel, MD; Sebastian Krüger, MD; Stefan Kretzer, MD; Jochen Talazko, MD; Sargon Ziyeh, MD; Johannes Weber, MD Thomas Els, MD

From the Department of Neurology (M.R., A.H., S. Krüger, S. Kretzer, T.E.); the Department of Nuclear Medicine (J.T.); and the Department of Neuroradiology (S.Z., J.W.), University of Freiburg, Germany.

Correspondence to Andreas Hetzel, MD, Department of Neurology and Clinical Neurophysiology, University of Freiburg, Neurocenter, Breisacherstr. 64, D-79106 Freiburg, Germany. E-mail andreas.hetzel@uniklinik-freiburg.de

Abstract

Background and Purpose— A recent study showed a dramatic increase in cerebral hemorrhage comprising atypical locations with low-frequency ultrasound–mediated recombinant tissue plasminogen activator–thrombolysis in humans. Here, we provide a possible explanation for this phenomenon by a side effect observed in a study using the similar ultrasound device.

Methods— The study was originally undertaken to investigate by transcranial Doppler sonography, positron emission tomography and perfusion MRI whether transcranial application of wide-field low-frequency ultrasound (300 kHz) improves cerebral hemodynamics in patients with cerebral small vessel disease.

Results— Showing no clear positive effect on cerebral hemodynamics in 4 patients and on cerebral perfusion (positron emission tomography) in 2 patients, the study has been terminated early because of a remarkable side effect in the first patient (a 62 year-old man) undergoing perfusion-MRI: detection of frontoparietal extravasation of Gadolinium contrast agent (applied during MRI perfusion imaging preinsonation) on MRI immediately postinsonation.

Conclusions— Abnormal permeability of the human blood-brain barrier can be induced by wide-field low-frequency insonation. The observed excessive bleeding rate with low-frequency sonothrombolysis might thus be attributable to primary blood-brain barrier disruption by ultrasound.


Key Words: blood-brain barrier • hemodynamic phenomena • leukoaraiosis • side effect • ultrasound
http://stroke.ahajournals.org/cgi/content/full/37/6/1546