System for non-invasive measuring of an intracranial reserve space (ICRS) parameter of a mammalian subject, comprising a multi-frequency ultrasound probe configured, beginning at a start time, to emit and receive ultrasound waves into and from the subject's head and to produce a signal of brain tissue pulsation; an instrument configured to non-invasively partially occlude an internal jugular vein (IJV) starting at the start time and including a second ultrasound probe producing a second signal; and a computer system configured to receive the signal, the second signal and the start time, the computer system also configured, using one or more processors, to derive from the signal an intracranial brain tissue pulsation waveform and from the second signal images of the IJV, and to determine a length of time from the start time to a subsequent time at which the waveform is sufficiently compressed so as to exhibit a predefined decline in variability.

An ultrasonic diagnostic imaging system is described which can diagnose, treat, or monitor the cranial vasculature for obstructions such as blood clots causing ischemic stroke. The system has a headset which maintains two transducer arrays in contact with acoustic windows through the temporal bones on opposite sides of the head. The clinician is aided in properly positioning the arrays over the best acoustic windows through the bone by a signal produced by one of the arrays in response to transmission through the cranium by the other array, which passes through the temporal bones on both sides of the head. The amplitude of this through- transmission signal is detected and displayed to the clinician, either qualitatively or quantitatively, as the arrays are positioned.

Arrangements described herein relate to a portable headset. The portable headset includes a body. The portable headset is configured to be in a stored state by folding the body and in a deployed state by unfolding the body to receive a head of a subject. The portable headset further includes a device including a transducer. The device is configured to be adjacent the received head of the subject when the portable headset is in the deployed state.

Arrangements described herein relate to a headset. The headset includes a device. The device includes a transducer configured to interact with a head of a subject. The headset further includes a manually-operated registration system configured to delineate a workspace of the transducer at the head of the subject.

A head frame for a medical patient includes support for a probe and a neck support. The frame wraps around the head of the patient and can be used in the supine position. The support may include a probe holder slidable under the head and configured to contact or engage the neck support. In some embodiments, conformal shaping to the head and/or neck of the patient, the frame's rigid construction, the alignment of the optionally separable holder to the neck support, the weight of the head, or a combination thereof serve to keep the distal tip of the ultrasound probe in place against the temporal region of the head without need for attaching the frame to the head as by straps, which may provide an arrangement robust against patient/vehicle movement in an emergency medical services setting.

A dynamic headset system is provided. The dynamic headset system includes a head cradle configured to receive a head of a subject and having a bottom surface configured to face a platform on which the dynamic headset apparatus is placed. The dynamic headset system further includes a device including an instrument adjacent to the head of the subject when the head of the subject is in the head cradle.

A method may include positioning a catheter, including at least one electrode, within an esophagus such that the electrode is proximate to at least one sympathetic ganglion. The methods may further include recruiting the sympathetic ganglion via an electrical signal, monitoring the recruitment of the sympathetic ganglion, and, based on the monitoring the recruitment of the sympathetic ganglion, adjusting the electrical signal from the at least one electrode.

A method for assessing a patient may involve performing a first diagnostic procedure on the patient. The first diagnostic procedure may involve securing a volumetric integral phase-shift spectroscopy (VIPS) device to the patient's head, measuring an intracranial bioimpedance with the VIPS device, and detecting an asymmetry based on the measured intracranial bioimpedance. The method may further involve performing a second diagnostic procedure on the patient using an additional diagnostic device, receiving first patient data from the first diagnostic procedure and second patient data from the second diagnostic procedure in a computer processor, processing the first patient data and the second patient data with the computer processor, and generating an assessment of the patient with the computer processor, based at least in part on the processed first patient data and second patient data.

A method is provided including identifying a subject as being at risk of cognitive decline due to cardiac surgery. The method further includes implanting at least one neural stimulator in a vicinity of a sphenopalatine ganglion (SPG) of the subject, and applying stimulation to the SPG by activating the neural stimulator at least during the cardiac surgery. Other applications are also described.

Disclosed is a method for imaging brain activity from a set of ultrasound images I(t) of blood in a brain, wherein a measured spectrum s(P,t,) is computed at each point P of the ultrasound images, a reference spectrum s(P,) is determined at each point P, based on measured spectrums at point P, the reference spectrogram having a high frequency edge decaying in a frequency .sub.min(P) to .sub.max(P), and a differential intensity is computed as:

dI(P,t)=.sub..sub.min.sub.(P).sup..sup.max.sup.(P)A(P,)[s(P,t,)s(P,)]d

wherein A(P,) is a positive weighting function.